diff --git a/build/connect.html b/build/connect.html new file mode 100644 index 0000000..8d4f809 --- /dev/null +++ b/build/connect.html @@ -0,0 +1,39 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Start | Hardware | Testnet | Manual | Crypto | Credits | Source | Donate

+

Public Testnet

+

If you just want to get started experimenting without building any physical networks, you are welcome to join the Public Reticulum Testnet. The testnet is just that, an informal network for testing and experimenting. It will be up most of the time, and anyone can join, but it also means that there's no guarantees for service availability.

+

The testnet runs the very latest version of Reticulum (often even a short while before it is publicly released). Sometimes experimental versions of Reticulum might be deployed to nodes on the testnet, which means strange behaviour can occur. If none of that scares you, you can join the testnet via either TCP or I2P.

+

Just add one of the following interfaces to your Reticulum configuration file:

+
# TCP/IP interface to the Dublin Hub
+  [[RNS Testnet Dublin]]
+    type = TCPClientInterface
+    enabled = yes
+    target_host = dublin.connect.reticulum.network
+    target_port = 4965
+
+# TCP/IP interface to the BetweenTheBorders Hub (community-provided)
+  [[RNS Testnet BetweenTheBorders]]
+    type = TCPClientInterface
+    enabled = yes
+    target_host = betweentheborders.com
+    target_port = 4242
+
+# Interface to I2P Hub A
+  [[RNS Testnet I2P Hub A]]
+    type = I2PInterface
+    enabled = yes
+    peers = mrwqlsioq4hoo2lmeeud7dkfscnm7yxak7dmiyvsrnpfag3z5tsq.b32.i2p
+
+

The testnet also contains a number of Nomad Network nodes, and LXMF propagation nodes.

+

Next Topic: Read The Manual

+ + diff --git a/build/connect_de.html b/build/connect_de.html new file mode 100644 index 0000000..19ff231 --- /dev/null +++ b/build/connect_de.html @@ -0,0 +1,40 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Los Geht's | Hardware | Testnetz | Handbuch | Krypto | Credits | Quellcode | Unterstützen

+

Öffentliches Testnetz

+

Wenn Sie einfach nur experimentieren wollen, ohne ein physisches Netzwerk aufzubauen, können Sie sich gerne dem öffentlichen Reticulum Testnet anschließen. Das Testnetz ist genau das: ein informelles Netzwerk zum Testen und Experimentieren. Es wird die meiste Zeit verfügbar sein, und jeder kann mitmachen, aber das bedeutet auch, dass es keine Garantien für die Verfügbarkeit der Dienste gibt.

+

Auf dem Testnetz läuft die allerneueste Version von Reticulum (oft sogar kurz vor der öffentlichen Freigabe). Manchmal werden experimentelle Versionen von Reticulum auf Knoten im Testnetz eingesetzt, was bedeutet, dass seltsames Verhalten auftreten kann. +Wenn Sie das alles nicht abschreckt, können Sie dem Testnetz über TCP oder I2P beitreten.

+

Fügen Sie einfach eine der folgenden Schnittstellen in Ihre Reticulum-Konfigurationsdatei ein:

+
# TCP/IP interface to the Dublin Hub
+  [[RNS Testnet Dublin]]
+    type = TCPClientInterface
+    enabled = yes
+    target_host = dublin.connect.reticulum.network
+    target_port = 4965
+
+# TCP/IP interface to the BetweenTheBorders Hub (community-provided)
+  [[RNS Testnet BetweenTheBorders]]
+    type = TCPClientInterface
+    enabled = yes
+    target_host = betweentheborders.com
+    target_port = 4242
+
+# Interface to I2P Hub A
+  [[RNS Testnet I2P Hub A]]
+    type = I2PInterface
+    enabled = yes
+    peers = mrwqlsioq4hoo2lmeeud7dkfscnm7yxak7dmiyvsrnpfag3z5tsq.b32.i2p
+
+

Das Testnetz enthält auch eine Reihe von Nomad Network-Knoten und LXMF-Propagationsknoten, Sowie Sideband Peers, welche untereinander erreichbar sind.

+

Nächstes Thema: Lesen Sie das Handbuch

+ + diff --git a/build/connect_pl.html b/build/connect_pl.html new file mode 100644 index 0000000..7ece3c5 --- /dev/null +++ b/build/connect_pl.html @@ -0,0 +1,39 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Jak Zacząć | Hardware | Testnet | Podręcznik | Krypto | Zasługi | Kod Źródłowy | Darowizna

+

Publiczny Testnet

+

Jeśli chcesz po prostu zacząć eksperymentować bez budowania fizycznych sieci, zachęcam do przyłączenia się do Publicznego Testnetu Reticulum. Testnet to po prostu nieformalna sieć do testowania i eksperymentowania. Będzie działać przez większość czasu i każdy może do niej dołączyć, ale oznacza to również, że nie ma gwarancji dostępności usług.

+

W sieci testowej działa najnowsza wersja Reticulum (często nawet krótko przed jej publicznym udostępnieniem). Czasami eksperymentalne wersje Reticulum mogą zostać wdrożone do węzłów w sieci testowej, co oznacza, że ​​mogą wystąpić dziwne zachowania. Jeśli Ciebie to nie przeraża, możesz dołączyć do sieci testowej przez TCP lub I2P.

+

Dodaj jeden z następujących interfejsów do pliku konfiguracyjnego Reticulum:

+
# TCP/IP interface to the Dublin Hub
+  [[RNS Testnet Dublin]]
+    type = TCPClientInterface
+    enabled = yes
+    target_host = dublin.connect.reticulum.network
+    target_port = 4965
+
+# TCP/IP interface to the BetweenTheBorders Hub (community-provided)
+  [[RNS Testnet BetweenTheBorders]]
+    type = TCPClientInterface
+    enabled = yes
+    target_host = betweentheborders.com
+    target_port = 4242
+
+# Interface to I2P Hub A
+  [[RNS Testnet I2P Hub A]]
+    type = I2PInterface
+    enabled = yes
+    peers = mrwqlsioq4hoo2lmeeud7dkfscnm7yxak7dmiyvsrnpfag3z5tsq.b32.i2p
+
+

Testnet zawiera również liczne węzły Nomad Network, i węzły propagacyjne LXMF.

+

Następny Temat: Przeczytaj Podręcznik

+ + diff --git a/build/connect_pt-br.html b/build/connect_pt-br.html new file mode 100644 index 0000000..554143f --- /dev/null +++ b/build/connect_pt-br.html @@ -0,0 +1,40 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Começar | Hardware | Rede de Teste | Manual | Cripto | Créditos | Código | Ajude

+

Rede de Teste Pública

+

Se você quiser experimentar sem criar nenhuma rede física, você é bem-vindo para entrar na Rede de Teste Pública Reticulum. A rede de teste é apenas isso, uma rede informal para teste e experimentação. Estará online na maior parte do tempo e qualquer um pode entrar, mas isso também significa que não há garantia da disponibilidade do serviço.

+

A rede de teste executa a última versão do Reticulum (muitas vezes antes da versão ser publicamente lançada). +Algumas vezes versões experimentais do Reticulum podem ser utilizada em nós da rede de teste, que pode causar instabilidade. Se nada disso importa para você, você pode entrar na rede de teste via TCP ou I2P.

+

Adicione uma das seguintes interfaces no arquivo de configuração do seu Reticulum:

+
# Interface TCP/IP para o Dublin Hub
+  [[RNS Testnet Dublin]]
+    type = TCPClientInterface
+    enabled = yes
+    target_host = dublin.connect.reticulum.network
+    target_port = 4965
+
+# Interface TCP/IP para o BetweenTheBorders Hub
+  [[RNS Testnet BetweenTheBorders]]
+    type = TCPClientInterface
+    enabled = yes
+    target_host = betweentheborders.com
+    target_port = 4242
+
+# Interface para o I2P Hub A
+  [[RNS Testnet I2P Hub A]]
+    type = I2PInterface
+    enabled = yes
+    peers = mrwqlsioq4hoo2lmeeud7dkfscnm7yxak7dmiyvsrnpfag3z5tsq.b32.i2p
+
+

A rede de teste também contém o número de nós da Nomad Network e nós de propagação LXMF.

+

Próxima Página: Leia o Manual

+ + diff --git a/build/credits.html b/build/credits.html new file mode 100644 index 0000000..4f1667e --- /dev/null +++ b/build/credits.html @@ -0,0 +1,35 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Start | Hardware | Testnet | Manual | Crypto | Credits | Source | Donate

+

Acknowledgements & Credits

+

Reticulum can only exist because of the mountain of Open Source work it was built on top of, the contributions of everyone involved, and everyone that has supported the project through the years. To everyone who has helped, thank you so much.

+

A number of other modules and projects are either part of, or used by Reticulum. Sincere thanks to the authors and contributors of the following projects:

+ +

The protocol design and reference implementation for Reticulum was carried out between 2014 and 2022 by Mark Qvist.

+

The Python reference implementation of Reticulum and this website is licensed under the MIT License. Please donate to support the continued development.

+
+

The Reticulum Protocol is the shared property of all people,
I contribute it to the public domain.

Dedicated with hope and belief in the future
freedom and prosperity of all,
on Earth and beyond.

Thank You

+
+ + diff --git a/build/credits_de.html b/build/credits_de.html new file mode 100644 index 0000000..911a674 --- /dev/null +++ b/build/credits_de.html @@ -0,0 +1,35 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Los Geht's | Hardware | Testnetz | Handbuch | Krypto | Credits | Quellcode | Unterstützen

+

Danksagungen & Credits

+

Reticulum kann nur existieren, weil es auf einem Berg von Open-Source-Arbeiten aufbaut, weil alle Beteiligten dazu beigetragen haben und weil alle, die das Projekt über die Jahre hinweg unterstützt haben. Vielen Dank an alle, die geholfen haben.

+

Eine Reihe anderer Module und Projekte sind entweder Teil von Reticulum oder werden von Reticulum verwendet. Ein herzliches Dankeschön an die Autoren und Mitwirkenden der folgenden Projekte:

+ +

Das Protokolldesign und die Referenzimplementierung für Reticulum wurden zwischen 2014 und 2022 von Mark Qvist durchgeführt.

+

Die Python Referenzimplementierung von Reticulum und diese Website ist lizenziert unter der MIT License. Bitte Spenden sie zur Unterstützung der weiteren Entwicklung.

+
+

Das Reticulum Protokoll ist das gemeinsame Eigentum aller Menschen,
Ich stelle es der Öffentlichkeit zur Verfügung.

Engagiert mit Hoffnung und Glauben an die Zukunft
Freiheit und Wohlstand für alle,
auf der Erde und darüber hinaus.

Dankeschön

+
+ + diff --git a/build/credits_pl.html b/build/credits_pl.html new file mode 100644 index 0000000..cc5151f --- /dev/null +++ b/build/credits_pl.html @@ -0,0 +1,35 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Jak Zacząć | Hardware | Testnet | Podręcznik | Krypto | Zasługi | Kod Źródłowy | Darowizna

+

Podziękowania & Zasługi

+

Reticulum może istnieć tylko dzięki górze pracy Open Source, na której zostało zbudowane, dzięki wkładowi wszystkich zaangażowanych osób i wszystkich, którzy wspierali projekt przez lata. Wszystkim, którzy pomogli, bardzo dziękuję.

+

Wiele innych modułów i projektów jest częścią lub jest wykorzystywanych przez Reticulum. Szczere podziękowania dla autorów i współtwórców następujących projektów:

+ +

Projekt protokołu i wdrożenie referencyjne dla Reticulum zostało zrealizowane w latach 2014-2022 przez Marka Qvista.

+

Implementacja referencji dla języka Python oraz ta strona są opubliowanie na Licencji MIT. Proszę przekaż darowiznę, żeby wesprzeć dalszy rozwój projektu.

+
+

Protokół Reticulum jest wspólną własnością wszystkich ludzi,
Przekazuję go do domeny publicznej.

Dedykowany z nadzieją i wiarą w przyszłość
wolność i dobrobyt wszystkich,
na Ziemi i poza nią.

Dziękuję

+
+ + diff --git a/build/credits_pt-br.html b/build/credits_pt-br.html new file mode 100644 index 0000000..561e245 --- /dev/null +++ b/build/credits_pt-br.html @@ -0,0 +1,35 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Começar | Hardware | Rede de Teste | Manual | Cripto | Créditos | Código | Ajude

+

Reconhecimentos e Créditos

+

Reticulum só foi possível graças a montanha de trabalho Código Aberto para o projeto, as contribuições de todos envolvidos e todos que apoiaram o projeto por esses anos. Para todos que ajudaram, muito obrigado.

+

Uma lista de outros modelos e projetos são parte disso ou utilizado no Reticulum, Agradecimentos sinceros para os autores e contribuidores dos seguinte projetos:

+ +

O design do protocolo e implementação de referência foram desenvolvidos entre 2014 e 2022 por Mark Qvist.

+

A implementação Python referencial do Reticulum e seu site utilizam a licença MIT. Por favor considere uma doação para ajudar a continuar o projeto.

+
+

O Protocolo Reticulum é de propriedade de todas as pessoas,
Eu contribuo para o domínio público.

Dedicado com a esperança e crença na liberdade futura e prosperidade para todos,
na Terra e além.

Obrigado

+
+ + diff --git a/build/crypto.html b/build/crypto.html new file mode 100644 index 0000000..03aef00 --- /dev/null +++ b/build/crypto.html @@ -0,0 +1,35 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Start | Hardware | Testnet | Manual | Crypto | Credits | Source | Donate

+

Cryptographic Primitives

+

Reticulum uses a simple suite of efficient, strong and modern cryptographic primitives, with widely available implementations that can be used both on general-purpose CPUs and on microcontrollers. The necessary primitives are:

+ +

In the default installation configuration, the X25519, Ed25519 and AES-128-CBC primitives are provided by OpenSSL (via the PyCA/cryptography package). The hashing functions SHA-256 and SHA-512 are provided by the standard Python hashlib. The HKDF, HMAC, Fernet primitives, and the PKCS7 padding function are always provided by the following internal implementations:

+ +

Reticulum also includes a complete implementation of all necessary primitives in pure Python. If OpenSSL & PyCA are not available on the system when Reticulum is started, Reticulum will instead use the internal pure-python primitives. A trivial consequence of this is performance, with the OpenSSL backend being much faster. The most important consequence however, is the potential loss of security by using primitives that has not seen the same amount of scrutiny, testing and review as those from OpenSSL.

+

If you want to use the internal pure-python primitives, it is highly advisable that you have a good understanding of the risks that this pose, and make an informed decision on whether those risks are acceptable to you.

+

Reticulum is relatively young software, and should be considered as such. While it has been built with cryptography best-practices very foremost in mind, it has not been externally security audited, and there could very well be privacy or security breaking bugs. If you want to help out, or help sponsor an audit, please do get in touch.

+

Next Topic: Acknowledgements & Credits

+ + diff --git a/build/crypto_de.html b/build/crypto_de.html new file mode 100644 index 0000000..fac48f2 --- /dev/null +++ b/build/crypto_de.html @@ -0,0 +1,35 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Los Geht's | Hardware | Testnetz | Handbuch | Krypto | Credits | Quellcode | Unterstützen

+

Kryptographische Primitive

+

Reticulum verwendet eine einfache Reihe von effizienten, starken und modernen kryptographischen Primitiven mit weithin verfügbaren Implementierungen, die sowohl auf Allzweck-CPUs als auch auf Mikrocontrollern verwendet werden können. Die notwendigen Primitive sind:

+ +

In der Standard-Installationskonfiguration werden die Primitive X25519, Ed25519 und AES-128-CBC von OpenSSL (mit dem PyCA/cryptography Packet mitgebracht). Die Hashing-Funktionen SHA-256 und SHA-512 werden vom Standard-Python bereitgestellt hashlib. Die HKDF, HMAC, Fernet Primitive, und die PKCS7 Auffüllfunktion werden immer von den folgenden internen Implementierungen bereitgestellt:

+ +

Reticulum enthält außerdem eine vollständige Implementierung aller erforderlichen Primitive in reinem Python. Wenn OpenSSL und PyCA beim Start von Reticulum nicht auf dem System verfügbar sind, verwendet Reticulum stattdessen die internen reinen Python-Primitive. Eine triviale Folge hiervon ist die Leistung, da das OpenSSL-Backend viel schneller ist. Die wichtigste Konsequenz ist jedoch der potenzielle Verlust an Sicherheit durch die Verwendung von Primitiven, die nicht in gleichem Maße wie die von OpenSSL untersucht, getestet und geprüft wurden.

+

Wenn Sie die internen reinen Python-Primitive verwenden wollen, ist es sehr ratsam, dass Sie die damit verbundenen Risiken gut verstehen und eine fundierte Entscheidung darüber treffen, ob diese Risiken für Sie akzeptabel sind.

+

Reticulum ist eine relativ junge Software, die als solche betrachtet werden sollte. Obwohl es unter Berücksichtigung der besten Kryptographie-Praktiken entwickelt wurde, ist es nicht extern sicherheitsgeprüft worden, und es könnte sehr wohl Fehler enthalten, die den Datenschutz oder die Sicherheit verletzen. Wenn Sie mithelfen oder ein Audit sponsern wollen, nehmen Sie bitte Kontakt auf.

+

Nächstes Thema: Danksagungen & Credits

+ + diff --git a/build/crypto_pl.html b/build/crypto_pl.html new file mode 100644 index 0000000..11b2191 --- /dev/null +++ b/build/crypto_pl.html @@ -0,0 +1,35 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Jak Zacząć | Hardware | Testnet | Podręcznik | Krypto | Zasługi | Kod Źródłowy | Darowizna

+

Prymitywy kryptograficzne

+

Reticulum wykorzystuje prosty zestaw wydajnych, silnych i nowoczesnych prymitywów kryptograficznych, z szeroko dostępnymi implementacjami, które mogą być używane zarówno na procesorach ogólnego przeznaczenia, jak i na mikrokontrolerach. Niezbędne prymitywy to:

+ +

W domyślnej konfiguracji instalacji, prymitywy X25519, Ed25519 i AES-128-CBC są dostarczone przez OpenSSL (przez pakiet PyCA/cryptography). Funkcja hashu SHA-256 i SHA-512 są dostarczone przez standard Pythona hashlib. Prymitywy HKDF, HMAC, Fernet i funkcja padding PKCS7 są zawsze dostarczane przez następujące wewnętrzne implementacje:

+ +

Reticulum zawiera również kompletną implementację wszystkich niezbędnych prymitywów w czystym Pythonie. Jeśli OpenSSL i PyCA nie są dostępne w systemie podczas uruchamiania Reticulum, Reticulum użyje wewnętrznych prymitywów w czystym Pythonie. Trywialną konsekwencją tego jest wydajność, backend OpenSSL jest znacznie szybszy. Najważniejszą konsekwencją jest jednak potencjalna utrata bezpieczeństwa poprzez użycie prymitywów, które nie zostały poddane takiej samej analizie, testom i przeglądom jak te z OpenSSL.

+

Jeśli chcesz używać wewnętrznych czystych prymitywów pythona, jest bardzo wskazane, abyś dobrze rozumiał ryzyko, jakie to stwarza, i podjął świadomą decyzję, czy to ryzyko jest dla ciebie do przyjęcia.

+

Reticulum jest stosunkowo młodym oprogramowaniem i powinno być traktowane jako takie. Chociaż zostało zbudowane z myślą o najlepszych praktykach kryptograficznych, nie zostało poddane zewnętrznemu audytowi bezpieczeństwa i bardzo możliwe, że zawiera błędy naruszające prywatność lub bezpieczeństwo. Jeśli chcesz pomóc lub zasponsorować audyt, skontaktuj się ze mną.

+

Next Topic: Podziękowania & Zasługi

+ + diff --git a/build/crypto_pt-br.html b/build/crypto_pt-br.html new file mode 100644 index 0000000..4c07f80 --- /dev/null +++ b/build/crypto_pt-br.html @@ -0,0 +1,35 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Começar | Hardware | Rede de Teste | Manual | Cripto | Créditos | Código | Ajude

+

Primitivos Criptográficos

+

Reticulum utiliza uma suíte simples de primitivos criptográficos modernos, fortes e eficientes, com diversas implementações disponíveis que pode ser utilizados tanto em CPUs convencionais como microcontroladores. Os primitivos necessários são:

+ +

Na configuração de instalação padrão, os primitivos X25519, Ed25519 e AES_128-CBC são fornecidos pela OpenSSL (pelo pacote PyCA/cryptography ). As funções de hash SHA-256 e SHA-512 são fornecidas pela biblioteca Python hashlib. Os primitivos HKDF, HMAC, Fernet, e a função de preenchimento PKCS7 são sempre fornecidas pelas seguintes implementações internas:

+ +

Reticulum também incluí a implementação completa de todos os primitivos necessários em Python puro. Se o OpenSSL & PyCA não estão disponíveis no sistema que o Reticulum é iniciado, Reticulum vai utilizar os primitivos internos. A consequência trivial disso é o desempenho, com a biblioteca OpenSSL sendo mais rápida. A consequência mais importante no entanto, é a potencial perda de segurança por utilizar primitivos que não possuem o mesmo nível de suporte, teste e revisão que o OpenSSL.

+

Se você quer utilizar primitivos internos em Python, é aconselhável que você entenda os riscos envolvidos, e tome uma decisão informada conforme os ricos são aceitáveis para você.

+

Reticulum é um software relativamente jovem, e deve ser considerado como tal. Enquanto ele é desenvolvido com as melhores práticas de criptografia em mente, ainda não foi auditado externamente, e pode haver bugs para segurança e privacidade. Se você quer ajudar, ou patrocinar uma auditoria, nos informe.

+

Próxima Página: Agradecimentos & Créditos

+ + diff --git a/build/css/water.css b/build/css/water.css new file mode 100644 index 0000000..39c5d78 --- /dev/null +++ b/build/css/water.css @@ -0,0 +1,1710 @@ +/** + * Automatic version: + * Uses light theme by default but switches to dark theme + * if a system-wide theme preference is set on the user's device. + */ + +:root { + --background-body: #fff; + --background: #efefef; + --background-alt: #f7f7f7; + --selection: #9e9e9e; + --text-main: #363636; + --text-bright: #000; + --text-muted: #70777f; + --links: #0076d1; + --focus: #0096bfab; + --border: #dbdbdb; + --code: #000; + --animation-duration: 0.1s; + --button-base: #d0cfcf; + --button-hover: #9b9b9b; + --scrollbar-thumb: rgb(170, 170, 170); + --scrollbar-thumb-hover: var(--button-hover); + --form-placeholder: #949494; + --form-text: #1d1d1d; + --variable: #39a33c; + --highlight: #ff0; + --select-arrow: url("data:image/svg+xml;charset=utf-8,%3C?xml version='1.0' encoding='utf-8'?%3E %3Csvg version='1.1' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' height='62.5' width='116.9' fill='%23161f27'%3E %3Cpath d='M115.3,1.6 C113.7,0 111.1,0 109.5,1.6 L58.5,52.7 L7.4,1.6 C5.8,0 3.2,0 1.6,1.6 C0,3.2 0,5.8 1.6,7.4 L55.5,61.3 C56.3,62.1 57.3,62.5 58.4,62.5 C59.4,62.5 60.5,62.1 61.3,61.3 L115.2,7.4 C116.9,5.8 116.9,3.2 115.3,1.6Z'/%3E %3C/svg%3E"); +} + +body { + font-size: 1.1em; +} + +div.top_menu { + font-size: 1em; +} + +div.lang_menu { + margin-bottom: 0.35em; +} + +@media (prefers-color-scheme: dark) { +:root { + --background-body: #202b38; + --background: #161f27; + --background-alt: #1a242f; + --selection: #1c76c5; + --text-main: #dbdbdb; + --text-bright: #fff; + --text-muted: #a9b1ba; + --links: #41adff; + --focus: #0096bfab; + --border: #526980; + --code: #ffbe85; + --animation-duration: 0.1s; + --button-base: #0c151c; + --button-hover: #040a0f; + --scrollbar-thumb: var(--button-hover); + --scrollbar-thumb-hover: rgb(0, 0, 0); + --form-placeholder: #a9a9a9; + --form-text: #fff; + --variable: #d941e2; + --highlight: #efdb43; + --select-arrow: url("data:image/svg+xml;charset=utf-8,%3C?xml version='1.0' encoding='utf-8'?%3E %3Csvg version='1.1' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' height='62.5' width='116.9' fill='%23efefef'%3E %3Cpath d='M115.3,1.6 C113.7,0 111.1,0 109.5,1.6 L58.5,52.7 L7.4,1.6 C5.8,0 3.2,0 1.6,1.6 C0,3.2 0,5.8 1.6,7.4 L55.5,61.3 C56.3,62.1 57.3,62.5 58.4,62.5 C59.4,62.5 60.5,62.1 61.3,61.3 L115.2,7.4 C116.9,5.8 116.9,3.2 115.3,1.6Z'/%3E %3C/svg%3E"); +} +} + +html { + scrollbar-color: rgb(170, 170, 170) #fff; + scrollbar-color: var(--scrollbar-thumb) var(--background-body); + scrollbar-width: thin; + text-size-adjust: none; + -webkit-text-size-adjust: none; + -moz-text-size-adjust: none; + -ms-text-size-adjust: none; +} + +@media (prefers-color-scheme: dark) { + + html { + scrollbar-color: #040a0f #202b38; + scrollbar-color: var(--scrollbar-thumb) var(--background-body); + } +} + +@media (prefers-color-scheme: dark) { + + html { + scrollbar-color: #040a0f #202b38; + scrollbar-color: var(--scrollbar-thumb) var(--background-body); + } +} + +@media (prefers-color-scheme: dark) { + + html { + scrollbar-color: #040a0f #202b38; + scrollbar-color: var(--scrollbar-thumb) var(--background-body); + } +} + +@media (prefers-color-scheme: dark) { + + html { + scrollbar-color: #040a0f #202b38; + scrollbar-color: var(--scrollbar-thumb) var(--background-body); + } +} + +@media (prefers-color-scheme: dark) { + + html { + scrollbar-color: #040a0f #202b38; + scrollbar-color: var(--scrollbar-thumb) var(--background-body); + } +} + +@media (prefers-color-scheme: dark) { + + html { + scrollbar-color: #040a0f #202b38; + scrollbar-color: var(--scrollbar-thumb) var(--background-body); + } +} + +body { + font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', 'Segoe UI Emoji', 'Apple Color Emoji', 'Noto Color Emoji', sans-serif; + line-height: 1.4; + max-width: 800px; + margin: 20px auto; + padding: 0 10px; + word-wrap: break-word; + color: #363636; + color: var(--text-main); + background: #fff; + background: var(--background-body); + text-rendering: optimizeLegibility; +} + +@media (prefers-color-scheme: dark) { + + body { + background: #202b38; + background: var(--background-body); + } +} + +@media (prefers-color-scheme: dark) { + + body { + color: #dbdbdb; + color: var(--text-main); + } +} + +li { + margin-top: 0.5em; + margin-bottom: 0.5em; +} + +button { + transition: + background-color 0.1s linear, + border-color 0.1s linear, + color 0.1s linear, + box-shadow 0.1s linear, + transform 0.1s ease; + transition: + background-color var(--animation-duration) linear, + border-color var(--animation-duration) linear, + color var(--animation-duration) linear, + box-shadow var(--animation-duration) linear, + transform var(--animation-duration) ease; +} + +@media (prefers-color-scheme: dark) { + + button { + transition: + background-color 0.1s linear, + border-color 0.1s linear, + color 0.1s linear, + box-shadow 0.1s linear, + transform 0.1s ease; + transition: + background-color var(--animation-duration) linear, + border-color var(--animation-duration) linear, + color var(--animation-duration) linear, + box-shadow var(--animation-duration) linear, + transform var(--animation-duration) ease; + } +} + +input { + transition: + background-color 0.1s linear, + border-color 0.1s linear, + color 0.1s linear, + box-shadow 0.1s linear, + transform 0.1s ease; + transition: + background-color var(--animation-duration) linear, + border-color var(--animation-duration) linear, + color var(--animation-duration) linear, + box-shadow var(--animation-duration) linear, + transform var(--animation-duration) ease; +} + +@media (prefers-color-scheme: dark) { + + input { + transition: + background-color 0.1s linear, + border-color 0.1s linear, + color 0.1s linear, + box-shadow 0.1s linear, + transform 0.1s ease; + transition: + background-color var(--animation-duration) linear, + border-color var(--animation-duration) linear, + color var(--animation-duration) linear, + box-shadow var(--animation-duration) linear, + transform var(--animation-duration) ease; + } +} + +textarea { + transition: + background-color 0.1s linear, + border-color 0.1s linear, + color 0.1s linear, + box-shadow 0.1s linear, + transform 0.1s ease; + transition: + background-color var(--animation-duration) linear, + border-color var(--animation-duration) linear, + color var(--animation-duration) linear, + box-shadow var(--animation-duration) linear, + transform var(--animation-duration) ease; +} + +@media (prefers-color-scheme: dark) { + + textarea { + transition: + background-color 0.1s linear, + border-color 0.1s linear, + color 0.1s linear, + box-shadow 0.1s linear, + transform 0.1s ease; + transition: + background-color var(--animation-duration) linear, + border-color var(--animation-duration) linear, + color var(--animation-duration) linear, + box-shadow var(--animation-duration) linear, + transform var(--animation-duration) ease; + } +} + +h1 { + font-size: 1.85em; + margin-top: 0; +} + +h1, +h2, +h3, +h4, +h5, +h6 { + margin-bottom: 12px; + margin-top: 24px; +} + +h1 { + color: #000; + color: var(--text-bright); +} + +@media (prefers-color-scheme: dark) { + + h1 { + color: #fff; + color: var(--text-bright); + } +} + +h2 { + color: #000; + color: var(--text-bright); +} + +@media (prefers-color-scheme: dark) { + + h2 { + color: #fff; + color: var(--text-bright); + } +} + +h3 { + color: #000; + color: var(--text-bright); +} + +@media (prefers-color-scheme: dark) { + + h3 { + color: #fff; + color: var(--text-bright); + } +} + +h4 { + color: #000; + color: var(--text-bright); +} + +@media (prefers-color-scheme: dark) { + + h4 { + color: #fff; + color: var(--text-bright); + } +} + +h5 { + color: #000; + color: var(--text-bright); +} + +@media (prefers-color-scheme: dark) { + + h5 { + color: #fff; + color: var(--text-bright); + } +} + +h6 { + color: #000; + color: var(--text-bright); +} + +@media (prefers-color-scheme: dark) { + + h6 { + color: #fff; + color: var(--text-bright); + } +} + +strong { + color: #000; + color: var(--text-bright); +} + +@media (prefers-color-scheme: dark) { + + strong { + color: #fff; + color: var(--text-bright); + } +} + +h1, +h2, +h3, +h4, +h5, +h6, +b, +strong, +th { + font-weight: 600; +} + +q::before { + content: none; +} + +q::after { + content: none; +} + +blockquote { + border-left: 4px solid #0096bfab; + border-left: 4px solid var(--focus); + margin: 1.5em 0; + padding: 0.5em 1em; + font-style: italic; +} + +@media (prefers-color-scheme: dark) { + + blockquote { + border-left: 4px solid #0096bfab; + border-left: 4px solid var(--focus); + } +} + +q { + border-left: 4px solid #0096bfab; + border-left: 4px solid var(--focus); + margin: 1.5em 0; + padding: 0.5em 1em; + font-style: italic; +} + +@media (prefers-color-scheme: dark) { + + q { + border-left: 4px solid #0096bfab; + border-left: 4px solid var(--focus); + } +} + +blockquote > footer { + font-style: normal; + border: 0; +} + +blockquote cite { + font-style: normal; +} + +address { + font-style: normal; +} + +a[href^='mailto\:']::before { + content: '📧 '; +} + +a[href^='tel\:']::before { + content: '📞 '; +} + +a[href^='sms\:']::before { + content: '💬 '; +} + +mark { + background-color: #ff0; + background-color: var(--highlight); + border-radius: 2px; + padding: 0 2px 0 2px; + color: #000; +} + +@media (prefers-color-scheme: dark) { + + mark { + background-color: #efdb43; + background-color: var(--highlight); + } +} + +a > code, +a > strong { + color: inherit; +} + +button, +select, +input[type='submit'], +input[type='reset'], +input[type='button'], +input[type='checkbox'], +input[type='range'], +input[type='radio'] { + cursor: pointer; +} + +input, +select { + display: block; +} + +[type='checkbox'], +[type='radio'] { + display: initial; +} + +input { + color: #1d1d1d; + color: var(--form-text); + background-color: #efefef; + background-color: var(--background); + font-family: inherit; + font-size: inherit; + margin-right: 6px; + margin-bottom: 6px; + padding: 10px; + border: none; + border-radius: 6px; + outline: none; +} + +@media (prefers-color-scheme: dark) { + + input { + background-color: #161f27; + background-color: var(--background); + } +} + +@media (prefers-color-scheme: dark) { + + input { + color: #fff; + color: var(--form-text); + } +} + +button { + color: #1d1d1d; + color: var(--form-text); + background-color: #efefef; + background-color: var(--background); + font-family: inherit; + font-size: inherit; + margin-right: 6px; + margin-bottom: 6px; + padding: 10px; + border: none; + border-radius: 6px; + outline: none; +} + +@media (prefers-color-scheme: dark) { + + button { + background-color: #161f27; + background-color: var(--background); + } +} + +@media (prefers-color-scheme: dark) { + + button { + color: #fff; + color: var(--form-text); + } +} + +textarea { + color: #1d1d1d; + color: var(--form-text); + background-color: #efefef; + background-color: var(--background); + font-family: inherit; + font-size: inherit; + margin-right: 6px; + margin-bottom: 6px; + padding: 10px; + border: none; + border-radius: 6px; + outline: none; +} + +@media (prefers-color-scheme: dark) { + + textarea { + background-color: #161f27; + background-color: var(--background); + } +} + +@media (prefers-color-scheme: dark) { + + textarea { + color: #fff; + color: var(--form-text); + } +} + +select { + color: #1d1d1d; + color: var(--form-text); + background-color: #efefef; + background-color: var(--background); + font-family: inherit; + font-size: inherit; + margin-right: 6px; + margin-bottom: 6px; + padding: 10px; + border: none; + border-radius: 6px; + outline: none; +} + +@media (prefers-color-scheme: dark) { + + select { + background-color: #161f27; + background-color: var(--background); + } +} + +@media (prefers-color-scheme: dark) { + + select { + color: #fff; + color: var(--form-text); + } +} + +button { + background-color: #d0cfcf; + background-color: var(--button-base); + padding-right: 30px; + padding-left: 30px; +} + +@media (prefers-color-scheme: dark) { + + button { + background-color: #0c151c; + background-color: var(--button-base); + } +} + +input[type='submit'] { + background-color: #d0cfcf; + background-color: var(--button-base); + padding-right: 30px; + padding-left: 30px; +} + +@media (prefers-color-scheme: dark) { + + input[type='submit'] { + background-color: #0c151c; + background-color: var(--button-base); + } +} + +input[type='reset'] { + background-color: #d0cfcf; + background-color: var(--button-base); + padding-right: 30px; + padding-left: 30px; +} + +@media (prefers-color-scheme: dark) { + + input[type='reset'] { + background-color: #0c151c; + background-color: var(--button-base); + } +} + +input[type='button'] { + background-color: #d0cfcf; + background-color: var(--button-base); + padding-right: 30px; + padding-left: 30px; +} + +@media (prefers-color-scheme: dark) { + + input[type='button'] { + background-color: #0c151c; + background-color: var(--button-base); + } +} + +button:hover { + background: #9b9b9b; + background: var(--button-hover); +} + +@media (prefers-color-scheme: dark) { + + button:hover { + background: #040a0f; + background: var(--button-hover); + } +} + +input[type='submit']:hover { + background: #9b9b9b; + background: var(--button-hover); +} + +@media (prefers-color-scheme: dark) { + + input[type='submit']:hover { + background: #040a0f; + background: var(--button-hover); + } +} + +input[type='reset']:hover { + background: #9b9b9b; + background: var(--button-hover); +} + +@media (prefers-color-scheme: dark) { + + input[type='reset']:hover { + background: #040a0f; + background: var(--button-hover); + } +} + +input[type='button']:hover { + background: #9b9b9b; + background: var(--button-hover); +} + +@media (prefers-color-scheme: dark) { + + input[type='button']:hover { + background: #040a0f; + background: var(--button-hover); + } +} + +input[type='color'] { + min-height: 2rem; + padding: 8px; + cursor: pointer; +} + +input[type='checkbox'], +input[type='radio'] { + height: 1em; + width: 1em; +} + +input[type='radio'] { + border-radius: 100%; +} + +input { + vertical-align: top; +} + +label { + vertical-align: middle; + margin-bottom: 4px; + display: inline-block; +} + +input:not([type='checkbox']):not([type='radio']), +input[type='range'], +select, +button, +textarea { + -webkit-appearance: none; +} + +textarea { + display: block; + margin-right: 0; + box-sizing: border-box; + resize: vertical; +} + +textarea:not([cols]) { + width: 100%; +} + +textarea:not([rows]) { + min-height: 40px; + height: 140px; +} + +select { + background: #efefef url("data:image/svg+xml;charset=utf-8,%3C?xml version='1.0' encoding='utf-8'?%3E %3Csvg version='1.1' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' height='62.5' width='116.9' fill='%23161f27'%3E %3Cpath d='M115.3,1.6 C113.7,0 111.1,0 109.5,1.6 L58.5,52.7 L7.4,1.6 C5.8,0 3.2,0 1.6,1.6 C0,3.2 0,5.8 1.6,7.4 L55.5,61.3 C56.3,62.1 57.3,62.5 58.4,62.5 C59.4,62.5 60.5,62.1 61.3,61.3 L115.2,7.4 C116.9,5.8 116.9,3.2 115.3,1.6Z'/%3E %3C/svg%3E") calc(100% - 12px) 50% / 12px no-repeat; + background: var(--background) var(--select-arrow) calc(100% - 12px) 50% / 12px no-repeat; + padding-right: 35px; +} + +@media (prefers-color-scheme: dark) { + + select { + background: #161f27 url("data:image/svg+xml;charset=utf-8,%3C?xml version='1.0' encoding='utf-8'?%3E %3Csvg version='1.1' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' height='62.5' width='116.9' fill='%23efefef'%3E %3Cpath d='M115.3,1.6 C113.7,0 111.1,0 109.5,1.6 L58.5,52.7 L7.4,1.6 C5.8,0 3.2,0 1.6,1.6 C0,3.2 0,5.8 1.6,7.4 L55.5,61.3 C56.3,62.1 57.3,62.5 58.4,62.5 C59.4,62.5 60.5,62.1 61.3,61.3 L115.2,7.4 C116.9,5.8 116.9,3.2 115.3,1.6Z'/%3E %3C/svg%3E") calc(100% - 12px) 50% / 12px no-repeat; + background: var(--background) var(--select-arrow) calc(100% - 12px) 50% / 12px no-repeat; + } +} + +@media (prefers-color-scheme: dark) { + + select { + background: #161f27 url("data:image/svg+xml;charset=utf-8,%3C?xml version='1.0' encoding='utf-8'?%3E %3Csvg version='1.1' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' height='62.5' width='116.9' fill='%23efefef'%3E %3Cpath d='M115.3,1.6 C113.7,0 111.1,0 109.5,1.6 L58.5,52.7 L7.4,1.6 C5.8,0 3.2,0 1.6,1.6 C0,3.2 0,5.8 1.6,7.4 L55.5,61.3 C56.3,62.1 57.3,62.5 58.4,62.5 C59.4,62.5 60.5,62.1 61.3,61.3 L115.2,7.4 C116.9,5.8 116.9,3.2 115.3,1.6Z'/%3E %3C/svg%3E") calc(100% - 12px) 50% / 12px no-repeat; + background: var(--background) var(--select-arrow) calc(100% - 12px) 50% / 12px no-repeat; + } +} + +@media (prefers-color-scheme: dark) { + + select { + background: #161f27 url("data:image/svg+xml;charset=utf-8,%3C?xml version='1.0' encoding='utf-8'?%3E %3Csvg version='1.1' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' height='62.5' width='116.9' fill='%23efefef'%3E %3Cpath d='M115.3,1.6 C113.7,0 111.1,0 109.5,1.6 L58.5,52.7 L7.4,1.6 C5.8,0 3.2,0 1.6,1.6 C0,3.2 0,5.8 1.6,7.4 L55.5,61.3 C56.3,62.1 57.3,62.5 58.4,62.5 C59.4,62.5 60.5,62.1 61.3,61.3 L115.2,7.4 C116.9,5.8 116.9,3.2 115.3,1.6Z'/%3E %3C/svg%3E") calc(100% - 12px) 50% / 12px no-repeat; + background: var(--background) var(--select-arrow) calc(100% - 12px) 50% / 12px no-repeat; + } +} + +@media (prefers-color-scheme: dark) { + + select { + background: #161f27 url("data:image/svg+xml;charset=utf-8,%3C?xml version='1.0' encoding='utf-8'?%3E %3Csvg version='1.1' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' height='62.5' width='116.9' fill='%23efefef'%3E %3Cpath d='M115.3,1.6 C113.7,0 111.1,0 109.5,1.6 L58.5,52.7 L7.4,1.6 C5.8,0 3.2,0 1.6,1.6 C0,3.2 0,5.8 1.6,7.4 L55.5,61.3 C56.3,62.1 57.3,62.5 58.4,62.5 C59.4,62.5 60.5,62.1 61.3,61.3 L115.2,7.4 C116.9,5.8 116.9,3.2 115.3,1.6Z'/%3E %3C/svg%3E") calc(100% - 12px) 50% / 12px no-repeat; + background: var(--background) var(--select-arrow) calc(100% - 12px) 50% / 12px no-repeat; + } +} + +select::-ms-expand { + display: none; +} + +select[multiple] { + padding-right: 10px; + background-image: none; + overflow-y: auto; +} + +input:focus { + box-shadow: 0 0 0 2px #0096bfab; + box-shadow: 0 0 0 2px var(--focus); +} + +@media (prefers-color-scheme: dark) { + + input:focus { + box-shadow: 0 0 0 2px #0096bfab; + box-shadow: 0 0 0 2px var(--focus); + } +} + +select:focus { + box-shadow: 0 0 0 2px #0096bfab; + box-shadow: 0 0 0 2px var(--focus); +} + +@media (prefers-color-scheme: dark) { + + select:focus { + box-shadow: 0 0 0 2px #0096bfab; + box-shadow: 0 0 0 2px var(--focus); + } +} + +button:focus { + box-shadow: 0 0 0 2px #0096bfab; + box-shadow: 0 0 0 2px var(--focus); +} + +@media (prefers-color-scheme: dark) { + + button:focus { + box-shadow: 0 0 0 2px #0096bfab; + box-shadow: 0 0 0 2px var(--focus); + } +} + +textarea:focus { + box-shadow: 0 0 0 2px #0096bfab; + box-shadow: 0 0 0 2px var(--focus); +} + +@media (prefers-color-scheme: dark) { + + textarea:focus { + box-shadow: 0 0 0 2px #0096bfab; + box-shadow: 0 0 0 2px var(--focus); + } +} + +input[type='checkbox']:active, +input[type='radio']:active, +input[type='submit']:active, +input[type='reset']:active, +input[type='button']:active, +input[type='range']:active, +button:active { + transform: translateY(2px); +} + +input:disabled, +select:disabled, +button:disabled, +textarea:disabled { + cursor: not-allowed; + opacity: 0.5; +} + +::-moz-placeholder { + color: #949494; + color: var(--form-placeholder); +} + +:-ms-input-placeholder { + color: #949494; + color: var(--form-placeholder); +} + +::-ms-input-placeholder { + color: #949494; + color: var(--form-placeholder); +} + +::placeholder { + color: #949494; + color: var(--form-placeholder); +} + +@media (prefers-color-scheme: dark) { + + ::-moz-placeholder { + color: #a9a9a9; + color: var(--form-placeholder); + } + + :-ms-input-placeholder { + color: #a9a9a9; + color: var(--form-placeholder); + } + + ::-ms-input-placeholder { + color: #a9a9a9; + color: var(--form-placeholder); + } + + ::placeholder { + color: #a9a9a9; + color: var(--form-placeholder); + } +} + +fieldset { + border: 1px #0096bfab solid; + border: 1px var(--focus) solid; + border-radius: 6px; + margin: 0; + margin-bottom: 12px; + padding: 10px; +} + +@media (prefers-color-scheme: dark) { + + fieldset { + border: 1px #0096bfab solid; + border: 1px var(--focus) solid; + } +} + +legend { + font-size: 0.9em; + font-weight: 600; +} + +input[type='range'] { + margin: 10px 0; + padding: 10px 0; + background: transparent; +} + +input[type='range']:focus { + outline: none; +} + +input[type='range']::-webkit-slider-runnable-track { + width: 100%; + height: 9.5px; + -webkit-transition: 0.2s; + transition: 0.2s; + background: #efefef; + background: var(--background); + border-radius: 3px; +} + +@media (prefers-color-scheme: dark) { + + input[type='range']::-webkit-slider-runnable-track { + background: #161f27; + background: var(--background); + } +} + +input[type='range']::-webkit-slider-thumb { + box-shadow: 0 1px 1px #000, 0 0 1px #0d0d0d; + height: 20px; + width: 20px; + border-radius: 50%; + background: #dbdbdb; + background: var(--border); + -webkit-appearance: none; + margin-top: -7px; +} + +@media (prefers-color-scheme: dark) { + + input[type='range']::-webkit-slider-thumb { + background: #526980; + background: var(--border); + } +} + +input[type='range']:focus::-webkit-slider-runnable-track { + background: #efefef; + background: var(--background); +} + +@media (prefers-color-scheme: dark) { + + input[type='range']:focus::-webkit-slider-runnable-track { + background: #161f27; + background: var(--background); + } +} + +input[type='range']::-moz-range-track { + width: 100%; + height: 9.5px; + -moz-transition: 0.2s; + transition: 0.2s; + background: #efefef; + background: var(--background); + border-radius: 3px; +} + +@media (prefers-color-scheme: dark) { + + input[type='range']::-moz-range-track { + background: #161f27; + background: var(--background); + } +} + +input[type='range']::-moz-range-thumb { + box-shadow: 1px 1px 1px #000, 0 0 1px #0d0d0d; + height: 20px; + width: 20px; + border-radius: 50%; + background: #dbdbdb; + background: var(--border); +} + +@media (prefers-color-scheme: dark) { + + input[type='range']::-moz-range-thumb { + background: #526980; + background: var(--border); + } +} + +input[type='range']::-ms-track { + width: 100%; + height: 9.5px; + background: transparent; + border-color: transparent; + border-width: 16px 0; + color: transparent; +} + +input[type='range']::-ms-fill-lower { + background: #efefef; + background: var(--background); + border: 0.2px solid #010101; + border-radius: 3px; + box-shadow: 1px 1px 1px #000, 0 0 1px #0d0d0d; +} + +@media (prefers-color-scheme: dark) { + + input[type='range']::-ms-fill-lower { + background: #161f27; + background: var(--background); + } +} + +input[type='range']::-ms-fill-upper { + background: #efefef; + background: var(--background); + border: 0.2px solid #010101; + border-radius: 3px; + box-shadow: 1px 1px 1px #000, 0 0 1px #0d0d0d; +} + +@media (prefers-color-scheme: dark) { + + input[type='range']::-ms-fill-upper { + background: #161f27; + background: var(--background); + } +} + +input[type='range']::-ms-thumb { + box-shadow: 1px 1px 1px #000, 0 0 1px #0d0d0d; + border: 1px solid #000; + height: 20px; + width: 20px; + border-radius: 50%; + background: #dbdbdb; + background: var(--border); +} + +@media (prefers-color-scheme: dark) { + + input[type='range']::-ms-thumb { + background: #526980; + background: var(--border); + } +} + +input[type='range']:focus::-ms-fill-lower { + background: #efefef; + background: var(--background); +} + +@media (prefers-color-scheme: dark) { + + input[type='range']:focus::-ms-fill-lower { + background: #161f27; + background: var(--background); + } +} + +input[type='range']:focus::-ms-fill-upper { + background: #efefef; + background: var(--background); +} + +@media (prefers-color-scheme: dark) { + + input[type='range']:focus::-ms-fill-upper { + background: #161f27; + background: var(--background); + } +} + +a { + text-decoration: none; + color: #0076d1; + color: var(--links); +} + +@media (prefers-color-scheme: dark) { + + a { + color: #41adff; + color: var(--links); + } +} + +a:hover { + text-decoration: underline; +} + +code { + background: #efefef; + background: var(--background); + color: #000; + color: var(--code); + padding: 2.5px 5px; + border-radius: 6px; + font-size: 1em; +} + +@media (prefers-color-scheme: dark) { + + code { + color: #ffbe85; + color: var(--code); + } +} + +@media (prefers-color-scheme: dark) { + + code { + background: #161f27; + background: var(--background); + } +} + +samp { + background: #efefef; + background: var(--background); + color: #000; + color: var(--code); + padding: 2.5px 5px; + border-radius: 6px; + font-size: 1em; +} + +@media (prefers-color-scheme: dark) { + + samp { + color: #ffbe85; + color: var(--code); + } +} + +@media (prefers-color-scheme: dark) { + + samp { + background: #161f27; + background: var(--background); + } +} + +time { + background: #efefef; + background: var(--background); + color: #000; + color: var(--code); + padding: 2.5px 5px; + border-radius: 6px; + font-size: 1em; +} + +@media (prefers-color-scheme: dark) { + + time { + color: #ffbe85; + color: var(--code); + } +} + +@media (prefers-color-scheme: dark) { + + time { + background: #161f27; + background: var(--background); + } +} + +pre > code { + padding: 10px; + display: block; + overflow-x: auto; +} + +var { + color: #39a33c; + color: var(--variable); + font-style: normal; + font-family: monospace; +} + +@media (prefers-color-scheme: dark) { + + var { + color: #d941e2; + color: var(--variable); + } +} + +kbd { + background: #efefef; + background: var(--background); + border: 1px solid #dbdbdb; + border: 1px solid var(--border); + border-radius: 2px; + color: #363636; + color: var(--text-main); + padding: 2px 4px 2px 4px; +} + +@media (prefers-color-scheme: dark) { + + kbd { + color: #dbdbdb; + color: var(--text-main); + } +} + +@media (prefers-color-scheme: dark) { + + kbd { + border: 1px solid #526980; + border: 1px solid var(--border); + } +} + +@media (prefers-color-scheme: dark) { + + kbd { + background: #161f27; + background: var(--background); + } +} + +img, +video { + max-width: 100%; + height: auto; +} + +hr { + border: none; + border-top: 1px solid #dbdbdb; + border-top: 1px solid var(--border); +} + +@media (prefers-color-scheme: dark) { + + hr { + border-top: 1px solid #526980; + border-top: 1px solid var(--border); + } +} + +table { + border-collapse: collapse; + margin-bottom: 10px; + width: 100%; + table-layout: fixed; +} + +table caption { + text-align: left; +} + +td, +th { + padding: 6px; + text-align: left; + vertical-align: top; + word-wrap: break-word; +} + +thead { + border-bottom: 1px solid #dbdbdb; + border-bottom: 1px solid var(--border); +} + +@media (prefers-color-scheme: dark) { + + thead { + border-bottom: 1px solid #526980; + border-bottom: 1px solid var(--border); + } +} + +tfoot { + border-top: 1px solid #dbdbdb; + border-top: 1px solid var(--border); +} + +@media (prefers-color-scheme: dark) { + + tfoot { + border-top: 1px solid #526980; + border-top: 1px solid var(--border); + } +} + +tbody tr:nth-child(even) { + background-color: #efefef; + background-color: var(--background); +} + +@media (prefers-color-scheme: dark) { + + tbody tr:nth-child(even) { + background-color: #161f27; + background-color: var(--background); + } +} + +tbody tr:nth-child(even) button { + background-color: #f7f7f7; + background-color: var(--background-alt); +} + +@media (prefers-color-scheme: dark) { + + tbody tr:nth-child(even) button { + background-color: #1a242f; + background-color: var(--background-alt); + } +} + +tbody tr:nth-child(even) button:hover { + background-color: #fff; + background-color: var(--background-body); +} + +@media (prefers-color-scheme: dark) { + + tbody tr:nth-child(even) button:hover { + background-color: #202b38; + background-color: var(--background-body); + } +} + +::-webkit-scrollbar { + height: 10px; + width: 10px; +} + +::-webkit-scrollbar-track { + background: #efefef; + background: var(--background); + border-radius: 6px; +} + +@media (prefers-color-scheme: dark) { + + ::-webkit-scrollbar-track { + background: #161f27; + background: var(--background); + } +} + +::-webkit-scrollbar-thumb { + background: rgb(170, 170, 170); + background: var(--scrollbar-thumb); + border-radius: 6px; +} + +@media (prefers-color-scheme: dark) { + + ::-webkit-scrollbar-thumb { + background: #040a0f; + background: var(--scrollbar-thumb); + } +} + +@media (prefers-color-scheme: dark) { + + ::-webkit-scrollbar-thumb { + background: #040a0f; + background: var(--scrollbar-thumb); + } +} + +::-webkit-scrollbar-thumb:hover { + background: #9b9b9b; + background: var(--scrollbar-thumb-hover); +} + +@media (prefers-color-scheme: dark) { + + ::-webkit-scrollbar-thumb:hover { + background: rgb(0, 0, 0); + background: var(--scrollbar-thumb-hover); + } +} + +@media (prefers-color-scheme: dark) { + + ::-webkit-scrollbar-thumb:hover { + background: rgb(0, 0, 0); + background: var(--scrollbar-thumb-hover); + } +} + +::-moz-selection { + background-color: #9e9e9e; + background-color: var(--selection); + color: #000; + color: var(--text-bright); +} + +::selection { + background-color: #9e9e9e; + background-color: var(--selection); + color: #000; + color: var(--text-bright); +} + +@media (prefers-color-scheme: dark) { + + ::-moz-selection { + color: #fff; + color: var(--text-bright); + } + + ::selection { + color: #fff; + color: var(--text-bright); + } +} + +@media (prefers-color-scheme: dark) { + + ::-moz-selection { + background-color: #1c76c5; + background-color: var(--selection); + } + + ::selection { + background-color: #1c76c5; + background-color: var(--selection); + } +} + +details { + display: flex; + flex-direction: column; + align-items: flex-start; + background-color: #f7f7f7; + background-color: var(--background-alt); + padding: 10px 10px 0; + margin: 1em 0; + border-radius: 6px; + overflow: hidden; +} + +@media (prefers-color-scheme: dark) { + + details { + background-color: #1a242f; + background-color: var(--background-alt); + } +} + +details[open] { + padding: 10px; +} + +details > :last-child { + margin-bottom: 0; +} + +details[open] summary { + margin-bottom: 10px; +} + +summary { + display: list-item; + background-color: #efefef; + background-color: var(--background); + padding: 10px; + margin: -10px -10px 0; + cursor: pointer; + outline: none; +} + +@media (prefers-color-scheme: dark) { + + summary { + background-color: #161f27; + background-color: var(--background); + } +} + +summary:hover, +summary:focus { + text-decoration: underline; +} + +details > :not(summary) { + margin-top: 0; +} + +summary::-webkit-details-marker { + color: #363636; + color: var(--text-main); +} + +@media (prefers-color-scheme: dark) { + + summary::-webkit-details-marker { + color: #dbdbdb; + color: var(--text-main); + } +} + +dialog { + background-color: #f7f7f7; + background-color: var(--background-alt); + color: #363636; + color: var(--text-main); + border: none; + border-radius: 6px; + border-color: #dbdbdb; + border-color: var(--border); + padding: 10px 30px; +} + +@media (prefers-color-scheme: dark) { + + dialog { + border-color: #526980; + border-color: var(--border); + } +} + +@media (prefers-color-scheme: dark) { + + dialog { + color: #dbdbdb; + color: var(--text-main); + } +} + +@media (prefers-color-scheme: dark) { + + dialog { + background-color: #1a242f; + background-color: var(--background-alt); + } +} + +dialog > header:first-child { + background-color: #efefef; + background-color: var(--background); + border-radius: 6px 6px 0 0; + margin: -10px -30px 10px; + padding: 10px; + text-align: center; +} + +@media (prefers-color-scheme: dark) { + + dialog > header:first-child { + background-color: #161f27; + background-color: var(--background); + } +} + +dialog::-webkit-backdrop { + background: #0000009c; + -webkit-backdrop-filter: blur(4px); + backdrop-filter: blur(4px); +} + +dialog::backdrop { + background: #0000009c; + -webkit-backdrop-filter: blur(4px); + backdrop-filter: blur(4px); +} + +footer { + border-top: 1px solid #dbdbdb; + border-top: 1px solid var(--border); + padding-top: 10px; + color: #70777f; + color: var(--text-muted); +} + +@media (prefers-color-scheme: dark) { + + footer { + color: #a9b1ba; + color: var(--text-muted); + } +} + +@media (prefers-color-scheme: dark) { + + footer { + border-top: 1px solid #526980; + border-top: 1px solid var(--border); + } +} + +body > footer { + margin-top: 40px; +} + +@media print { + body, + pre, + code, + summary, + details, + button, + input, + textarea { + background-color: #fff; + } + + button, + input, + textarea { + border: 1px solid #000; + } + + body, + h1, + h2, + h3, + h4, + h5, + h6, + pre, + code, + button, + input, + textarea, + footer, + summary, + strong { + color: #000; + } + + summary::marker { + color: #000; + } + + summary::-webkit-details-marker { + color: #000; + } + + tbody tr:nth-child(even) { + background-color: #f2f2f2; + } + + a { + color: #00f; + text-decoration: underline; + } +} diff --git a/build/docs.html b/build/docs.html new file mode 100644 index 0000000..e5341f0 --- /dev/null +++ b/build/docs.html @@ -0,0 +1,17 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Start | Hardware | Testnet | Manual | Crypto | Credits | Source | Donate

+

Read The Manual

+

You can browse full documentation for Reticulum on this site or on GitHub Pages.

+

You can also download the Reticulum manual as a PDF

+

Next Topic: Cryptographic Primitives

+ + diff --git a/build/docs_de.html b/build/docs_de.html new file mode 100644 index 0000000..92c2762 --- /dev/null +++ b/build/docs_de.html @@ -0,0 +1,17 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Los Geht's | Hardware | Testnetz | Handbuch | Krypto | Credits | Quellcode | Unterstützen

+

Lesen Sie das Handbuch

+

Die vollständige Dokumentation zu Reticulum finden Sie hier Auf dieser Seite oder auf den GitHub Seiten.

+

Sie können auch das Reticulum-Handbuch als PDF herunterladen

+

Nächstes Thema: Kryptographische Primitive

+ + diff --git a/build/docs_pl.html b/build/docs_pl.html new file mode 100644 index 0000000..fab9708 --- /dev/null +++ b/build/docs_pl.html @@ -0,0 +1,17 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Jak Zacząć | Hardware | Testnet | Podręcznik | Krypto | Zasługi | Kod Źródłowy | Darowizna

+

Przeczytaj Podręcznik

+

Możesz sprawdzić pełną dokumentację Reticulum na tej stronie lub na stronach GitHub.

+

Możesz również pobrać podręcznik Reticulum jako PDF

+

Następny Temat: Prymitywy Kryptograficzne

+ + diff --git a/build/docs_pt-br.html b/build/docs_pt-br.html new file mode 100644 index 0000000..6b81375 --- /dev/null +++ b/build/docs_pt-br.html @@ -0,0 +1,17 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Começar | Hardware | Rede de Teste | Manual | Cripto | Créditos | Código | Ajude

+

Leia o Manual

+

Você navegar por toda documentação do Reticulum neste site ou no GitHub Pages.

+

Você também pode baixar o manual do Reticulum como PDF

+

Próxima Página: Criptografia

+ + diff --git a/build/donate.html b/build/donate.html new file mode 100644 index 0000000..579b7a3 --- /dev/null +++ b/build/donate.html @@ -0,0 +1,28 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Start | Hardware | Testnet | Manual | Crypto | Credits | Source | Donate

+

Support Reticulum

+

You can help support the continued development of open, free and private communications systems by donating via one of the following channels:

+ + + diff --git a/build/donate_de.html b/build/donate_de.html new file mode 100644 index 0000000..3af9b1c --- /dev/null +++ b/build/donate_de.html @@ -0,0 +1,24 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Los Geht's | Hardware | Testnetz | Handbuch | Krypto | Credits | Quellcode | Unterstützen

+

Reticulum Entwicklung unterstützen

+

Sie können die weitere Entwicklung offener, freier und privater Kommunikationssysteme unterstützen, indem Sie über einen der folgenden Kanäle spenden:

+

Monero

+
84FpY1QbxHcgdseePYNmhTHcrgMX4nFfBYtz2GKYToqHVVhJp8Eaw1Z1EedRnKD19b3B8NiLCGVxzKV17UMmmeEsCrPyA5w
+
+

Ethereum

+
0x81F7B979fEa6134bA9FD5c701b3501A2e61E897a
+
+

Bitcoin

+
3CPmacGm34qYvR6XWLVEJmi2aNe3PZqUuq
+
+ + diff --git a/build/donate_pl.html b/build/donate_pl.html new file mode 100644 index 0000000..328aaec --- /dev/null +++ b/build/donate_pl.html @@ -0,0 +1,28 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Jak Zacząć | Hardware | Testnet | Podręcznik | Krypto | Zasługi | Kod Źródłowy | Darowizna

+

Wesprzyj Reticulum

+

Możesz wspomóc dalszy rozwój otwartych, wolnych, prywatnych systemów komunikacji przez przekazanie darowizny za pośrednictwem jednego z następujących kanałów:

+ + + diff --git a/build/donate_pt-br.html b/build/donate_pt-br.html new file mode 100644 index 0000000..87b7ffb --- /dev/null +++ b/build/donate_pt-br.html @@ -0,0 +1,28 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
Reticulum | Começar | Hardware | Rede de Teste | Manual | Cripto | Créditos | Código | Ajude

+

Ajude o Reticulum

+

Você pode ajudar na continuação do desenvolvimento de sistemas de comunicação abertos, livres e privados, doando através de um dos seguintes canais:

+ + + diff --git a/build/gfx/reticulum_logo_512.png b/build/gfx/reticulum_logo_512.png new file mode 100644 index 0000000..ba3940a Binary files /dev/null and b/build/gfx/reticulum_logo_512.png differ diff --git a/build/hardware.html b/build/hardware.html new file mode 100644 index 0000000..64b7784 --- /dev/null +++ b/build/hardware.html @@ -0,0 +1,31 @@ + + + + + + +Reticulum Network + + + +

Deutsch | English | Polski | Português
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+

Supported Hardware

+

Reticulum can be used over practically any medium that can support at least a half-duplex channel with 500 bits per second throughput, and an MTU of 500 bytes. Data radios, modems, LoRa radios, serial lines, AX.25 TNCs, amateur radio digital modes, WiFi and Ethernet devices, free-space optical links, and similar systems are all examples of the types of physical devices Reticulum can use. The supported interface types include:

+ +

For a more detailed info, and a full list of supported interface types, please read the Communications Hardware and Supported Interfaces chapters of the manual.

+

Reticulum can also be encapsulated over existing IP networks, so there's nothing stopping you from using it over wired ethernet, your local WiFi network or the Internet, where it'll work just as well. In fact, one of the strengths of Reticulum is how easily it allows you to connect different mediums into a self-configuring, resilient and encrypted mesh, using any available mixture of available infrastructure.

+

As an example, it's possible to set up a Raspberry Pi connected to both a LoRa radio, a packet radio TNC and a WiFi network. Once the interfaces are configured, Reticulum will take care of the rest, and any device on the WiFi network can communicate with nodes on the LoRa and packet radio sides of the network, and vice versa.

+

Next Topic: Public Testnet

+ + diff --git a/build/hardware_de.html b/build/hardware_de.html new file mode 100644 index 0000000..73b72c1 --- /dev/null +++ b/build/hardware_de.html @@ -0,0 +1,31 @@ + + + + + + +Reticulum Network + + + +

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+

Unterstützte Hardware

+

Reticulum kann über praktisch jedes Medium verwendet werden, das mindestens einen Halbduplex-Kanal mit einem Durchsatz von 500 Bit pro Sekunde und einer MTU von 500 Byte unterstützt. Datenfunkgeräte, Modems, LoRa-Funkgeräte, serielle Leitungen, AX.25-TNCs, digitale Amateurfunkmodi, WiFi- und Ethernet-Geräte, optische Verbindungen im freien Raum und ähnliche Systeme sind Beispiele für physische Geräte, die Reticulum verwenden kann. Zu den unterstützten Schnittstellentypen gehören:

+ +

Ausführlichere Informationen und eine vollständige Liste der unterstützten Schnittstellentypen finden Sie in den Kapiteln Kommunikationshardware und Unterstützte Schnittstellen des Handbuchs.

+

Reticulum kann auch über bestehende IP-Netzwerke gekapselt werden, so dass dem Einsatz über ein kabelgebundenes Ethernet, Ihr lokales WiFi-Netzwerk oder das Internet nichts im Wege steht, wo es genauso gut funktioniert. Eine der Stärken von Reticulum besteht darin, dass Sie verschiedene Medien ganz einfach zu einem selbstkonfigurierenden, robusten und verschlüsselten Mesh verbinden können, wobei jede verfügbare Infrastruktur genutzt werden kann.

+

So ist es beispielsweise möglich, einen Raspberry Pi sowohl mit einem LoRa-Funkgerät als auch mit einem Paketfunk-TNC und einem WiFi-Netzwerk zu verbinden. Sobald die Schnittstellen konfiguriert sind, kümmert sich Reticulum um den Rest, und jedes Gerät im WiFi-Netzwerk kann mit Knoten auf der LoRa- und Paketfunkseite des Netzwerks kommunizieren und umgekehrt.

+

Nächstes Thema: Öffentliches Testnetz

+ + diff --git a/build/hardware_pl.html b/build/hardware_pl.html new file mode 100644 index 0000000..a5afbce --- /dev/null +++ b/build/hardware_pl.html @@ -0,0 +1,31 @@ + + + + + + +Reticulum Network + + + +

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+

Wspierany Hardware

+

Reticulum może być używane praktycznie przez każde medium, które wspiera przynajmniej kanał półdupleksowy z przepustowością 500 bitów na sekundę, i MTU 500 bitów. Data radio, modemy, radia LoRa, porty szeregowe, AX.25 TNC, tryby cyfrowe radia amatorskiego, WiFi i urządzenia Ethernet, bezprzewodowe łącza optyczne (FSO), i podobne systemy są przykładem rodzajów fizycznych urządzeń, które Reticulum może używać. Wspierane rodzaje interfejsów zawierają:

+ +

Bardziej szczegółowe informacje i pełną listę wspieranych rodzajów interfejsów można znaleźć w rozdziałach poświęconych sprzętowi komunikacyjnemu i wspieranych interfejsów.

+

Reticulum może być również umieszczone w istniejących sieciach IP, więc nic nie stoi na przeszkodzie, by używać go w przewodowej sieci ethernet, lokalnej sieci WiFi lub w Internecie, gdzie będzie działał równie dobrze. W rzeczywistości, jedną z mocnych stron Reticulum jest to, jak łatwo pozwala połączyć różne media w samokonfigurującą się, odporną i szyfrowaną sieć, wykorzystując dowolną mieszankę dostępnej infrastruktury.

+

Przykładowo, możliwe jest skonfigurowanie Raspberry Pi podłączonego zarówno do radia LoRa, TNC packet radio, jak i sieci WiFi. Po skonfigurowaniu interfejsów, Reticulum zajmie się resztą, a każde urządzenie w sieci WiFi może komunikować się z węzłami po stronie sieci LoRa i packet radio, i odwrotnie.

+

Następny Temat: Publiczny Testnet

+ + diff --git a/build/hardware_pt-br.html b/build/hardware_pt-br.html new file mode 100644 index 0000000..1481ddb --- /dev/null +++ b/build/hardware_pt-br.html @@ -0,0 +1,30 @@ + + + + + + +Reticulum Network + + + +

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+

Hardware Compátivel

+

Reticulum pode ser usado sobre praticamente qualquer dispositivo que suporte pelo menos um canal half-duplex com 500 bits por segundo de taxa de transferência, um MTU de 500 bytes. Rádios de dados, roteadores, rádios LoRa, linhas seriais, AX.25 TNCs, modos de rádio digital amador, Wi-Fi, Bluetooth, links ópticos de espaço-livre e sistemas similares são todos exemplos dos tipos de dispositivos físicos que o Reticulum pode utilizar. Os tipos de interface suportados incluem:

+ +

Para informações detalhadas e uma lista completa de todos os tipos de interfaces suportadas, leia o Hardware de Comunicações e o capítulo de Interfaces Suportadas do manual.

+

Reticulum pode ser utilizado sobre redes IP, nada lhe impede de utilizar via cabo Ethernet, sua rede local de Wi-Fi ou a Internet, onde ele funciona corretamente. Na verdade, um dos pontos fortes do Reticulum é como ele facilmente permite que você se conecte a diferentes dispositivos com mesh auto-configurável, resiliente e criptografada, utilizando apenas a infraestrutura disponível.

+

Como um exemplo, é possível utilizar um Raspberry Pi conectado em ambos, uma rádio LoRa, um rádio amador TNC e uma rede Wi-Fi. Uma vez que as interfaces estejam configuradas, Reticulum cuida do resto, e qualquer dispositivo na rede Wi-Fi pode se comunicar com nós do rádio LoRa e rádio amador, e vice-versa.

+

Próxima Página: Rede de Teste Pública

+ + diff --git a/build/index.html b/build/index.html new file mode 100644 index 0000000..7643380 --- /dev/null +++ b/build/index.html @@ -0,0 +1,35 @@ + + + + + + +Reticulum Network + + + +

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+

Reticulum

+

Reticulum is the cryptography-based networking stack for building local and wide-area networks with readily available hardware. Reticulum can continue to operate even in adverse conditions with very high latency and extremely low bandwidth.

+

The vision of Reticulum is to allow anyone to operate their own sovereign communication networks, and to make it cheap and easy to cover vast areas with a myriad of independent, interconnectable and autonomous networks. Reticulum is Unstoppable Networks for The People.

+

+ +

Reticulum is not one network. It is a tool for building thousands of networks. Networks without kill-switches, surveillance, censorship and control. Networks that can freely interoperate, associate and disassociate with each other. Reticulum is Networks for Human Beings.

+

From a users perspective, Reticulum allows the creation of applications that respect and empower the autonomy and sovereignty of communities and individuals. Reticulum provides secure digital communication that cannot be subjected to outside control, manipulation or censorship.

+

Reticulum enables the construction of both small and potentially planetary-scale networks, without any need for hierarchical or beaureucratic structures to control or manage them, while ensuring individuals and communities full sovereignty over their own network segments.

+

Notable Characteristics

+

While Reticulum solves the same problem that any network stack does, namely to get data reliably from one point to another over a number of intermediaries, it does so in a way that is very different from other networking technologies.

+ +

Next Topic: Get Started

+ + diff --git a/build/index_de.html b/build/index_de.html new file mode 100644 index 0000000..c349973 --- /dev/null +++ b/build/index_de.html @@ -0,0 +1,35 @@ + + + + + + +Reticulum Network + + + +

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+

Reticulum

+

Reticulum ist der kryptografiebasierte Netzwerkstack für den Aufbau von lokalen und Weitverkehrsnetzen mit leicht verfügbarer Hardware. Reticulum kann auch unter ungünstigen Bedingungen mit sehr hoher Latenz und extrem geringer Bandbreite weiterarbeiten.

+

Die Vision von Reticulum ist es, jedem die Möglichkeit zu geben, seine eigenen souveränen Kommunikationsnetze zu betreiben, und es billig und einfach zu machen, große Gebiete mit einer Vielzahl von unabhängigen, zusammenschaltbaren und autonomen Netzen abzudecken. Reticulum ist unaufhaltsame Netzwerke für die Menschen.

+

+ +

Reticulum ist nicht ein Netzwerk. Es ist ein Werkzeug zum Aufbau tausender Netzwerke. Netze ohne Kill-Switches, Überwachung, Zensur und Kontrolle. Netzwerke, die frei miteinander interagieren, sich verbinden und trennen können. Reticulum ist ein Netzwerk für Menschen.

+

Aus Sicht der Nutzer ermöglicht Reticulum die Entwicklung von Anwendungen, die die Autonomie und Souveränität von Gemeinschaften und Einzelpersonen respektieren und stärken. Reticulum bietet eine sichere digitale Kommunikation, die keiner Kontrolle, Manipulation oder Zensur von außen unterliegt.

+

Reticulum ermöglicht den Aufbau sowohl kleiner als auch potenziell planetarer Netzwerke, ohne dass hierarchische oder behördliche Strukturen zu deren Kontrolle oder Verwaltung erforderlich sind, und sichert Individuen und Gemeinschaften die volle Souveränität über ihre eigenen Netzwerksegmente.

+

Erwähnenswerte Merkmale

+

Reticulum löst zwar das gleiche Problem wie jeder andere Netzwerkstack, nämlich Daten zuverlässig von einem Punkt zu einem anderen über eine Reihe von Zwischenstationen zu transportieren, aber auf eine Weise, die sich von anderen Netzwerktechnologien stark unterscheidet.

+ +

Nächstes Thema: Los geht's

+ + diff --git a/build/index_pl.html b/build/index_pl.html new file mode 100644 index 0000000..7d184a9 --- /dev/null +++ b/build/index_pl.html @@ -0,0 +1,35 @@ + + + + + + +Reticulum Network + + + +

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+

Reticulum

+

Reticulum to oparty na kryptografii stos sieciowy do budowy sieci lokalnych (LAN) i rozległych (WAN) z wykorzystaniem łatwo dostępnego sprzętu. Reticulum może kontynuować pracę nawet w niekorzystnych warunkach, przy bardzo dużych opóźnieniach i ekstremalnie niskiej przepustowości.

+

Wizją Reticulum jest umożliwienie każdemu zarządzanie własnymi, niezależnymi sieciami komunikacyjnymi, a także umożliwienie taniego i łatwego pokrycia ogromnych obszarów niezliczoną ilością niezależnych, wzajemnie połączonych i autonomicznych sieci. Reticulum to Niepowstrzymane Sieci dla Ludzi.

+

+ +

Reticulum nie jest jedną siecią. Jest narzędziem do budowy tysięcy sieci. Sieci bez wyłączników, nadzoru, cenzury i kontroli. Sieci, które mogą swobodnie współdziałać, łączyć się i rozłączać ze sobą. Reticulum to Sieci dla Istot Ludzkich.

+

Z punktu widzenia użytkownika, Reticulum pozwala na tworzenie aplikacji, które szanują i wzmacniają autonomię i niezależność społeczności i jednostek. Reticulum zapewnia bezpieczną komunikację cyfrową, która nie może być poddana zewnętrznej kontroli, manipulacji czy cenzurze.

+

Reticulum umożliwia budowę zarówno małych, jak i potencjalnie planetarnych sieci, bez potrzeby tworzenia hierarchicznych lub biurokratycznych struktur do ich kontroli lub zarządzania, zapewniając jednocześnie jednostkom i społecznościom pełną niezależność nad ich własnymi segmentami sieci.

+

Istotne Cechy

+

Podczas gdy Reticulum rozwiązuje ten sam problem, co każdy stos sieciowy, a mianowicie niezawodne przesyłanie danych z jednego punktu do drugiego przez licznych pośredników, robi to w sposób, który bardzo różni się od innych technologii sieciowych.

+ +

Następny Temat: Jak zacząć

+ + diff --git a/build/index_pt-br.html b/build/index_pt-br.html new file mode 100644 index 0000000..ef0a9f1 --- /dev/null +++ b/build/index_pt-br.html @@ -0,0 +1,36 @@ + + + + + + +Reticulum Network + + + +

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+

Reticulum

+

Reticulum é uma framework de redes baseada em criptografia para desenvolver redes locais e distantes, utilizando o hardware disponível. Reticulum pode operar em condições adversas como alta latência e velocidade de rede extremamente baixa.

+

A visão do Reticulum é permitir que qualquer um possa operar sua própria rede de comunicação, sendo barato e fácil de cobrir vastas áreas com uma miríade de redes independentes, interconectáveis e autônomas. +Reticulum é "Redes Imparáveis Para o Povo".

+

+ +

O Reticulum não é uma rede. é uma ferramenta para construir milhares de redes. Redes sem interruptores, espionagem, censura ou controle. Redes que podem livremente interoperar, se associar e disassociar com cada uma. Reticulum é "Redes para Seres Humanos".

+

Pela perspectiva do usuário, Reticulum permite a criação de aplicações que respeitam e empoderam a autonomia e soberania de comunidades e indivíduos. Reticulum provê comunicação digital segura que não pode ser submetida ao controle, manipulação e censura.

+

Reticulum permite a construção de redes pequenas ou de escala planetária, sem a necessidade de estruturas hierárquicas ou burocráticas que controlem elas, enquanto garante que indivíduos e comunidades tenham total soberania sobre suas próprias redes.

+

Caracteristicas Notáveis

+

Enquanto o Reticulum resolve o mesmo problema que todo framework de rede, isto é, para obter dados de forma confiável de um ponto para outro por um número de intermediários, faz de uma forma muito diferente de outras tecnologias de rede.

+ +

Próxima Página: Começar

+ + diff --git a/build/license-de.html b/build/license-de.html new file mode 100644 index 0000000..100dc83 --- /dev/null +++ b/build/license-de.html @@ -0,0 +1,35 @@ + + + + + + +Reticulum Network + + + +

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+
MIT Lizenz
+
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+
+Hiermit wird jeder Person, die eine Kopie dieser Software und der zugehörigen Dokumentationsdateien (die "Software") erwirbt, die kostenlose Erlaubnis erteilt
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+
MIT License
+
+Copyright (c) 2016-2022 Mark Qvist / unsigned.io
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
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+
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+
+ + diff --git a/build/manual/Reticulum Manual.pdf b/build/manual/Reticulum Manual.pdf new file mode 100644 index 0000000..366dc05 Binary files /dev/null and b/build/manual/Reticulum Manual.pdf differ diff --git a/build/manual/_images/board_heltec32.png b/build/manual/_images/board_heltec32.png new file mode 100644 index 0000000..9f16786 Binary files /dev/null and b/build/manual/_images/board_heltec32.png differ diff --git a/build/manual/_images/board_rnode.png b/build/manual/_images/board_rnode.png new file mode 100644 index 0000000..97fcce3 Binary files /dev/null and b/build/manual/_images/board_rnode.png differ diff --git a/build/manual/_images/board_rnodev2.png b/build/manual/_images/board_rnodev2.png new file mode 100644 index 0000000..9c9f6ef Binary files /dev/null and b/build/manual/_images/board_rnodev2.png differ diff --git a/build/manual/_images/board_t3v20.png b/build/manual/_images/board_t3v20.png new file mode 100644 index 0000000..369586a Binary files /dev/null and b/build/manual/_images/board_t3v20.png differ diff --git a/build/manual/_images/board_t3v21.png b/build/manual/_images/board_t3v21.png new file mode 100644 index 0000000..28a62df Binary files /dev/null and b/build/manual/_images/board_t3v21.png differ diff --git a/build/manual/_images/board_tbeam.png b/build/manual/_images/board_tbeam.png new file mode 100644 index 0000000..dcad0f0 Binary files /dev/null and b/build/manual/_images/board_tbeam.png differ diff --git a/build/manual/_images/if_mode_graph_b.png b/build/manual/_images/if_mode_graph_b.png new file mode 100644 index 0000000..6606b60 Binary files /dev/null and b/build/manual/_images/if_mode_graph_b.png differ diff --git a/build/manual/_images/nomadnet_3.png b/build/manual/_images/nomadnet_3.png new file mode 100644 index 0000000..4a8c0de Binary files /dev/null and b/build/manual/_images/nomadnet_3.png differ diff --git a/build/manual/_images/radio_is5ac.png b/build/manual/_images/radio_is5ac.png new file mode 100644 index 0000000..e3988a6 Binary files /dev/null and b/build/manual/_images/radio_is5ac.png differ diff --git a/build/manual/_images/radio_rblhg5.png b/build/manual/_images/radio_rblhg5.png new file mode 100644 index 0000000..59bd6c9 Binary files /dev/null and b/build/manual/_images/radio_rblhg5.png differ diff --git a/build/manual/_images/sideband_devices.webp b/build/manual/_images/sideband_devices.webp new file mode 100644 index 0000000..a90154b Binary files /dev/null and b/build/manual/_images/sideband_devices.webp differ diff --git a/build/manual/_sources/examples.rst.txt b/build/manual/_sources/examples.rst.txt new file mode 100644 index 0000000..739e9d2 --- /dev/null +++ b/build/manual/_sources/examples.rst.txt @@ -0,0 +1,128 @@ +.. _examples-main: + +************* +Code Examples +************* + +A number of examples are included in the source distribution of Reticulum. +You can use these examples to learn how to write your own programs. + +.. _example-minimal: + +Minimal +======= + +The *Minimal* example demonstrates the bare-minimum setup required to connect to +a Reticulum network from your program. In about five lines of code, you will +have the Reticulum Network Stack initialised, and ready to pass traffic in your +program. + +.. literalinclude:: ../../Examples/Minimal.py + +This example can also be found at ``_. + +.. _example-announce: + +Announce +======== + +The *Announce* example builds upon the previous example by exploring how to +announce a destination on the network, and how to let your program receive +notifications about announces from relevant destinations. + +.. literalinclude:: ../../Examples/Announce.py + +This example can also be found at ``_. + +.. _example-broadcast: + +Broadcast +========= +The *Broadcast* example explores how to transmit plaintext broadcast messages +over the network. + +.. literalinclude:: ../../Examples/Broadcast.py + +This example can also be found at ``_. + +.. _example-echo: + +Echo +==== + +The *Echo* example demonstrates communication between two destinations using +the Packet interface. + +.. literalinclude:: ../../Examples/Echo.py + +This example can also be found at ``_. + +.. _example-link: + +Link +==== + +The *Link* example explores establishing an encrypted link to a remote +destination, and passing traffic back and forth over the link. + +.. literalinclude:: ../../Examples/Link.py + +This example can also be found at ``_. + +.. _example-identify: + +Identification +============== + +The *Identify* example explores identifying an intiator of a link, once +the link has been established. + +.. literalinclude:: ../../Examples/Identify.py + +This example can also be found at ``_. + +.. _example-request: + +Requests & Responses +==================== + +The *Request* example explores sendig requests and receiving responses. + +.. literalinclude:: ../../Examples/Request.py + +This example can also be found at ``_. + +.. _example-channel: + +Channel +======= + +The *Channel* example explores using a ``Channel`` to send structured +data between peers of a ``Link``. + +.. literalinclude:: ../../Examples/Channel.py + +This example can also be found at ``_. + +Buffer +====== + +The *Buffer* example explores using buffered readers and writers to send +binary data between peers of a ``Link``. + +.. literalinclude:: ../../Examples/Buffer.py + +This example can also be found at ``_. + +.. _example-filetransfer: + +Filetransfer +============ + +The *Filetransfer* example implements a basic file-server program that +allow clients to connect and download files. The program uses the Resource +interface to efficiently pass files of any size over a Reticulum :ref:`Link`. + +.. literalinclude:: ../../Examples/Filetransfer.py + +This example can also be found at ``_. \ No newline at end of file diff --git a/build/manual/_sources/forhumans.rst.txt b/build/manual/_sources/forhumans.rst.txt new file mode 100644 index 0000000..e953d50 --- /dev/null +++ b/build/manual/_sources/forhumans.rst.txt @@ -0,0 +1,4 @@ +******************************************** +An Explanation of Reticulum for Human Beings +******************************************** + diff --git a/build/manual/_sources/gettingstartedfast.rst.txt b/build/manual/_sources/gettingstartedfast.rst.txt new file mode 100644 index 0000000..7a4a22b --- /dev/null +++ b/build/manual/_sources/gettingstartedfast.rst.txt @@ -0,0 +1,510 @@ +******************** +Getting Started Fast +******************** + +The best way to get started with the Reticulum Network Stack depends on what +you want to do. This guide will outline sensible starting paths for different +scenarios. + + +Standalone Reticulum Installation +============================================= +If you simply want to install Reticulum and related utilities on a system, +the easiest way is via the ``pip`` package manager: + +.. code:: + + pip install rns + +If you do not already have pip installed, you can install it using the package manager +of your system with a command like ``sudo apt install python3-pip``, +``sudo pamac install python-pip`` or similar. + +You can also dowload the Reticulum release wheels from GitHub, or other release channels, +and install them offline using ``pip``: + +.. code:: + + pip install ./rns-0.5.1-py3-none-any.whl + + +Resolving Dependency & Installation Issues +============================================= +On some platforms, there may not be binary packages available for all dependencies, and +``pip`` installation may fail with an error message. In these cases, the issue can usually +be resolved by installing the development essentials packages for your platform: + +.. code:: + + # Debian / Ubuntu / Derivatives + sudo apt install build-essential + + # Arch / Manjaro / Derivatives + sudo pamac install base-devel + + # Fedora + sudo dnf groupinstall "Development Tools" "Development Libraries" + +With the base development packages installed, ``pip`` should be able to compile any missing +dependencies from source, and complete installation even on platforms that don't have pre- +compiled packages available. + +Try Using a Reticulum-based Program +============================================= + +If you simply want to try using a program built with Reticulum, a few different +programs exist that allow basic communication and a range of other useful functions, +even over extremely low-bandwidth Reticulum networks. + +These programs will let you get a feel for how Reticulum works. They have been designed +to run well over networks based on LoRa or packet radio, but can also be used over fast +links, such as local WiFi, wired Ethernet, the Internet, or any combination. + +As such, it is easy to get started experimenting, without having to set up any radio +transceivers or infrastructure just to try it out. Launching the programs on separate +devices connected to the same WiFi network is enough to get started, and physical +radio interfaces can then be added later. + +Remote Shell +^^^^^^^^^^^^ + +The `rnsh `_ program lets you establish fully interactive +remote shell sessions over Reticulum. It also allows you to pipe any program to or from a +remote system, and is similar to how ``ssh`` works. + +Nomad Network +^^^^^^^^^^^^^ + +The terminal-based program `Nomad Network `_ +provides a complete encrypted communications suite built with Reticulum. It features +encrypted messaging (both direct and delayed-delivery for offline users), file sharing, +and has a built-in text-browser and page server with support for dynamically rendered pages, +user authentication and more. + +.. image:: screenshots/nomadnet_3.png + :target: _images/nomadnet_3.png + +`Nomad Network `_ is a user-facing client +for the messaging and information-sharing protocol +`LXMF `_, another project built with Reticulum. + +You can install Nomad Network via pip: + +.. code:: + + # Install ... + pip install nomadnet + + # ... and run + nomadnet + +**Please Note**: If this is the very first time you use pip to install a program +on your system, you might need to reboot your system for your program to become +available. If you get a "command not found" error or similar when running the +program, reboot your system and try again. + +Sideband +^^^^^^^^ + +If you would rather use a program with a graphical user interface, you can take +a look at `Sideband `_, which is available for Android, +Linux and macOS. + +.. only:: html + + .. image:: screenshots/sideband_devices.webp + :align: center + :target: _images/sideband_devices.webp + +.. only:: latexpdf + + .. image:: screenshots/sideband_devices.png + :align: center + :target: _images/sideband_devices.png + +Sideband allows you to communicate with other people or LXMF-compatible +systems over Reticulum networks using LoRa, Packet Radio, WiFi, I2P, Encrypted QR +Paper Messages, or anything else Reticulum supports. It also interoperates with +the Nomad Network program. + +Using the Included Utilities +============================================= +Reticulum comes with a range of included utilities that make it easier to +manage your network, check connectivity and make Reticulum available to other +programs on your system. + +You can use ``rnsd`` to run Reticulum as a background or foreground service, +and the ``rnstatus``, ``rnpath`` and ``rnprobe`` utilities to view and query +network status and connectivity. + +To learn more about these utility programs, have a look at the +:ref:`Using Reticulum on Your System` chapter of this manual. + + +Creating a Network With Reticulum +============================================= +To create a network, you will need to specify one or more *interfaces* for +Reticulum to use. This is done in the Reticulum configuration file, which by +default is located at ``~/.reticulum/config``. You can get an example +configuration file with all options via ``rnsd --exampleconfig``. + +When Reticulum is started for the first time, it will create a default +configuration file, with one active interface. This default interface uses +your existing Ethernet and WiFi networks (if any), and only allows you to +communicate with other Reticulum peers within your local broadcast domains. + +To communicate further, you will have to add one or more interfaces. The default +configuration includes a number of examples, ranging from using TCP over the +internet, to LoRa and Packet Radio interfaces. + +With Reticulum, you only need to configure what interfaces you want to communicate +over. There is no need to configure address spaces, subnets, routing tables, +or other things you might be used to from other network types. + +Once Reticulum knows which interfaces it should use, it will automatically +discover topography and configure transport of data to any destinations it +knows about. + +In situations where you already have an established WiFi or Ethernet network, and +many devices that want to utilise the same external Reticulum network paths (for example over +LoRa), it will often be sufficient to let one system act as a Reticulum gateway, by +adding any external interfaces to the configuration of this system, and then enabling transport on it. Any +other device on your local WiFi will then be able to connect to this wider Reticulum +network just using the default (:ref:`AutoInterface`) configuration. + +Possibly, the examples in the config file are enough to get you started. If +you want more information, you can read the :ref:`Building Networks` +and :ref:`Interfaces` chapters of this manual. + +Connecting Reticulum Instances Over the Internet +================================================ +Reticulum currently offers two interfaces suitable for connecting instances over the Internet: :ref:`TCP` +and :ref:`I2P`. Each interface offers a different set of features, and Reticulum +users should carefully choose the interface which best suites their needs. + +The ``TCPServerInterface`` allows users to host an instance accessible over TCP/IP. This +method is generally faster, lower latency, and more energy efficient than using ``I2PInterface``, +however it also leaks more data about the server host. + +TCP connections reveal the IP address of both your instance and the server to anyone who can +inspect the connection. Someone could use this information to determine your location or identity. Adversaries +inspecting your packets may be able to record packet metadata like time of transmission and packet size. +Even though Reticulum encrypts traffic, TCP does not, so an adversary may be able to use +packet inspection to learn that a system is running Reticulum, and what other IP addresses connect to it. +Hosting a publicly reachable instance over TCP also requires a publicly reachable IP address, +which most Internet connections don't offer anymore. + +The ``I2PInterface`` routes messages through the `Invisible Internet Protocol +(I2P) `_. To use this interface, users must also run an I2P daemon in +parallel to ``rnsd``. For always-on I2P nodes it is recommended to use `i2pd `_. + +By default, I2P will encrypt and mix all traffic sent over the Internet, and +hide both the sender and receiver Reticulum instance IP addresses. Running an I2P node +will also relay other I2P user's encrypted packets, which will use extra +bandwidth and compute power, but also makes timing attacks and other forms of +deep-packet-inspection much more difficult. + +I2P also allows users to host globally available Reticulum instances from non-public IP's and behind firewalls and NAT. + +In general it is recommended to use an I2P node if you want to host a publicly accessible +instance, while preserving anonymity. If you care more about performance, and a slightly +easier setup, use TCP. + + +Connect to the Public Testnet +=========================================== + +An experimental public testnet has been made accessible over both I2P and TCP. You can join it +by adding one of the following interfaces to your ``.reticulum/config`` file: + +.. code:: + + # TCP/IP interface to the Dublin hub + [[RNS Testnet Dublin]] + type = TCPClientInterface + enabled = yes + target_host = dublin.connect.reticulum.network + target_port = 4965 + + # TCP/IP interface to the BetweenTheBorders Hub (community-provided) + [[RNS Testnet BetweenTheBorders]] + type = TCPClientInterface + enabled = yes + target_host = betweentheborders.com + target_port = 4242 + + # Interface to I2P hub A + [[RNS Testnet I2P Hub A]] + type = I2PInterface + enabled = yes + peers = uxg5kubabakh3jtnvsipingbr5574dle7bubvip7llfvwx2tgrua.b32.i2p + +Many other Reticulum instances are connecting to this testnet, and you can also join it +via other entry points if you know them. There is absolutely no control over the network +topography, usage or what types of instances connect. It will also occasionally be used +to test various failure scenarios, and there are no availability or service guarantees. + + +Adding Radio Interfaces +============================================== +Once you have Reticulum installed and working, you can add radio interfaces with +any compatible hardware you have available. Reticulum supports a wide range of radio +hardware, and if you already have any available, it is very likely that it will +work with Reticulum. For information on how to configure this, see the +:ref:`Interfaces` section of this manual. + +If you do not already have transceiver hardware available, you can easily and +cheaply build an :ref:`RNode`, which is a general-purpose long-range +digital radio transceiver, that integrates easily with Reticulum. + +To build one yourself requires installing a custom firmware on a supported LoRa +development board with an auto-install script. Please see the :ref:`Communications Hardware` +chapter for a guide. If you prefer purchasing a ready-made unit, you can refer to the +:ref:`list of suppliers`. For more information on RNode, you can also +refer to these additional external resources: + +* `How To Make Your Own RNodes `_ +* `Installing RNode Firmware on Compatible LoRa Devices `_ +* `Private, Secure and Uncensorable Messaging Over a LoRa Mesh `_ +* `RNode Firmware `_ + +If you have communications hardware that is not already supported by any of the +:ref:`existing interface types`, but you think would be suitable for use with Reticulum, +you are welcome to head over to the `GitHub discussion pages `_ +and propose adding an interface for the hardware. + + +Develop a Program with Reticulum +=========================================== +If you want to develop programs that use Reticulum, the easiest way to get +started is to install the latest release of Reticulum via pip: + +.. code:: + + pip3 install rns + +The above command will install Reticulum and dependencies, and you will be +ready to import and use RNS in your own programs. The next step will most +likely be to look at some :ref:`Example Programs`. + +For extended functionality, you can install optional dependencies: + +.. code:: + + pip3 install pyserial + + +Further information can be found in the :ref:`API Reference`. + + +Participate in Reticulum Development +============================================== +If you want to participate in the development of Reticulum and associated +utilities, you'll want to get the latest source from GitHub. In that case, +don't use pip, but try this recipe: + +.. code:: + + # Install dependencies + pip3 install cryptography pyserial + + # Clone repository + git clone https://github.com/markqvist/Reticulum.git + + # Move into Reticulum folder and symlink library to examples folder + cd Reticulum + ln -s ../RNS ./Examples/ + + # Run an example + python3 Examples/Echo.py -s + + # Unless you've manually created a config file, Reticulum will do so now, + # and immediately exit. Make any necessary changes to the file: + nano ~/.reticulum/config + + # ... and launch the example again. + python3 Examples/Echo.py -s + + # You can now repeat the process on another computer, + # and run the same example with -h to get command line options. + python3 Examples/Echo.py -h + + # Run the example in client mode to "ping" the server. + # Replace the hash below with the actual destination hash of your server. + python3 Examples/Echo.py 174a64852a75682259ad8b921b8bf416 + + # Have a look at another example + python3 Examples/Filetransfer.py -h + +When you have experimented with the basic examples, it's time to go read the +:ref:`Understanding Reticulum` chapter. Before submitting +your first pull request, it is probably a good idea to introduce yourself on +the `disucssion forum on GitHub `_, +or ask one of the developers or maintainers for a good place to start. + + +Platform-Specific Install Notes +============================================== + +Some platforms require a slightly different installation procedure, or have +various quirks that are worth being aware of. These are listed here. + +Android +^^^^^^^^^^^^^^^^^^^^^^^^ +Reticulum can be used on Android in different ways. The easiest way to get +started is using an app like `Sideband `_. + +For more control and features, you can use Reticulum and related programs via +the `Termux app `_, at the time of writing available on +`F-droid `_. + +Termux is a terminal emulator and Linux environment for Android based devices, +which includes the ability to use many different programs and libraries, +including Reticulum. + +To use Reticulum within the Termux environment, you will need to install +``python`` and the ``python-cryptography`` library using ``pkg``, the package-manager +build into Termux. After that, you can use ``pip`` to install Reticulum. + +From within Termux, execute the following: + +.. code:: + + # First, make sure indexes and packages are up to date. + pkg update + pkg upgrade + + # Then install python and the cryptography library. + pkg install python python-cryptography + + # Make sure pip is up to date, and install the wheel module. + pip install wheel pip --upgrade + + # Install Reticulum + pip install rns + +If for some reason the ``python-cryptography`` package is not available for +your platform via the Termux package manager, you can attempt to build it +locally on your device using the following command: + +.. code:: + + # First, make sure indexes and packages are up to date. + pkg update + pkg upgrade + + # Then install dependencies for the cryptography library. + pkg install python build-essential openssl libffi rust + + # Make sure pip is up to date, and install the wheel module. + pip install wheel pip --upgrade + + # To allow the installer to build the cryptography module, + # we need to let it know what platform we are compiling for: + export CARGO_BUILD_TARGET="aarch64-linux-android" + + # Start the install process for the cryptography module. + # Depending on your device, this can take several minutes, + # since the module must be compiled locally on your device. + pip install cryptography + + # If the above installation succeeds, you can now install + # Reticulum and any related software + pip install rns + +It is also possible to include Reticulum in apps compiled and distributed as +Android APKs. A detailed tutorial and example source code will be included +here at a later point. Until then you can use the `Sideband source code `_ as an example and startig point. + + +ARM64 +^^^^^^^^^^^^^^^^^^^^^^^^ +On some architectures, including ARM64, not all dependencies have precompiled +binaries. On such systems, you may need to install ``python3-dev`` before +installing Reticulum or programs that depend on Reticulum. + +.. code:: + + # Install Python and development packages + sudo apt update + sudo apt install python3 python3-pip python3-dev + + # Install Reticulum + python3 -m pip install rns + + +Raspberry Pi +^^^^^^^^^^^^^^^^^^^^^^^^^ +It is currently recommended to use a 64-bit version of the Raspberry Pi OS +if you want to run Reticulum on Raspberry Pi computers, since 32-bit versions +don't always have packages available for some dependencies. + +While it is possible to install and run Reticulum on 32-bit Rasperry Pi OSes, +it will require manually configuring and installing some packages, and is not +detailed in this manual. + + +Debian Bookworm +^^^^^^^^^^^^^^^^^^^^^^^^ +On versions of Debian released after April 2023, it is no longer possible +to use ``pip`` to install packages onto your system. Unfortunately, you will need to +use the replacement ``pipx`` command instead, which places installed packages in an +isolated environment. This should not negatively affect Reticulum, but installation +via this method is not fully tested yet. + +.. code:: + + # Install pipx + sudo apt install pipx + + # Make installed programs available on the command line + pipx ensurepath + + # Install Reticulum + pipx install rns + + +Ubuntu Lunar +^^^^^^^^^^^^^^^^^^^^^^^^ +On versions of Ubuntu released after April 2023, it is no longer possible +to use ``pip`` to install packages onto your system. Unfortunately, you will need to +use the replacement ``pipx`` command instead, which places installed packages in an +isolated environment. This should not negatively affect Reticulum, but installation +via this method is not fully tested yet. + +.. code:: + + # Install pipx + sudo apt install pipx + + # Make installed programs available on the command line + pipx ensurepath + + # Install Reticulum + pipx install rns + + +Pure-Python Reticulum +============================================== +In some rare cases, and on more obscure system types, it is not possible to +install one or more dependencies + +On more unusual systems, and in some rare cases, it might not be possible to +install or even compile one or more of the above modules. In such situations, +you can use the ``rnspure`` package instead of the ``rns`` package, or use ``pip`` +with the ``--no-dependencies`` command-line option. The ``rnspure`` +package requires no external dependencies for installation. Please note that the +actual contents of the ``rns`` and ``rnspure`` packages are *completely identical*. +The only difference is that the ``rnspure`` package lists no dependencies required +for installation. + +No matter how Reticulum is installed and started, it will load external dependencies +only if they are *needed* and *available*. If for example you want to use Reticulum +on a system that cannot support ``pyserial``, it is perfectly possible to do so using +the `rnspure` package, but Reticulum will not be able to use serial-based interfaces. +All other available modules will still be loaded when needed. + +**Please Note!** If you use the `rnspure` package to run Reticulum on systems that +do not support `PyCA/cryptography `_, it is +important that you read and understand the :ref:`Cryptographic Primitives ` +section of this manual. diff --git a/build/manual/_sources/hardware.rst.txt b/build/manual/_sources/hardware.rst.txt new file mode 100644 index 0000000..d82d581 --- /dev/null +++ b/build/manual/_sources/hardware.rst.txt @@ -0,0 +1,241 @@ +.. _hardware-main: + +*********************** +Communications Hardware +*********************** + +One of the truly valuable aspects of Reticulum is the ability to use it over +almost any conceivable kind of communications medium. The :ref:`interface types` +available for configuration in Reticulum are flexible enough to cover the use +of most wired and wireless communications hardware available, from decades-old +packet radio modems to modern millimeter-wave backhaul systems. + +If you already have or operate some kind of communications hardware, there is a +very good chance that it will work with Reticulum out of the box. In case it does +not, it is possible to provide the necessary glue with very little effort using +for example the :ref:`PipeInterface` or the :ref:`TCPClientInterface` +in combination with code like `TCP KISS Server `_ +by `simplyequipped `_. + +While this broad support and flexibility is very useful, an abundance of options +can sometimes make it difficult to know where to begin, especially when you are +starting from scratch. + +This chapter will outline a few different sensible starting paths to get +real-world functional wireless communications up and running with minimal cost +and effort. Two fundamental devices categories will be covered, *RNodes* and +*WiFi-based radios*. + +While there are many other device categories that are useful in building Reticulum +networks, knowing how to employ just these two will make it possible to build +a wide range of useful networks with little effort. + +.. _rnode-main: + +RNode +===== + +Reliable and general-purpose long-range digital radio transceiver systems are +commonly either very expensive, difficult to set up and operate, hard to source, +power-hungry, or all of the above at the same time. In an attempt to alleviate +this situation, the transceiver system *RNode* was designed. It is important to +note that RNode is not one specific device, from one particular vendor, but +*an open plaform* that anyone can use to build interoperable digital transceivers +suited to their needs and particular situations. + +An RNode is a general purpose, interoperable, low-power and long-range, reliable, +open and flexible radio communications device. Depending on its components, it can +operate on many different frequency bands, and use many different modulation +schemes, but most commonly, and for the purposes of this chapter, we will limit +the discussion to RNodes using *LoRa* modulation in common ISM bands. + +**Avoid Confusion!** RNodes can use LoRa as a *physical-layer modulation*, but it +does not use, and has nothing to do with the *LoRaWAN* protocol and standard, commonly +used for centrally controlled IoT devices. RNodes use *raw LoRa modulation*, without +any additional protocol overhead. All high-level protocol functionality is handled +directly by Reticulum. + +.. _rnode-creating: + +Creating RNodes +^^^^^^^^^^^^^^^ +RNode has been designed as a system that is easy to replicate across time and +space. You can put together a functioning transceiver using commonly available +components, and a few open source software tools. While you can design and build RNodes +completely from scratch, to your exact desired specifications, this chapter +will explain the easiest possible approach to creating RNodes: Using common +LoRa development boards. This approach can be boiled down to two simple steps: + +1. Obtain one or more supported development boards +2. Install the RNode firmware with the automated installer + +Once the firmware has been installed and provisioned by the install script, it +is ready to use with any software that supports RNodes, including Reticulum. +The device can be used with Reticulum by adding an :ref:`RNodeInterface` +to the configuration. + +.. _rnode-supported: + +Supported Boards +^^^^^^^^^^^^^^^^ +To create one or more RNodes, you will need to obtain supported development +boards. The following boards are supported by the auto-installer. + +LilyGO LoRa32 v2.1 +"""""""""""""""""" +.. image:: graphics/board_t3v21.png + :width: 46% + :align: center + +- **Supported Firmware Lines** v1.x & v2.x +- **Transceiver IC** Semtech SX1276 +- **Device Platform** ESP32 +- **Manufacturer** `LilyGO `_ + + +LilyGO LoRa32 v2.0 +"""""""""""""""""" +.. image:: graphics/board_t3v20.png + :width: 46% + :align: center + +- **Supported Firmware Lines** v1.x & v2.x +- **Transceiver IC** Semtech SX1276 +- **Device Platform** ESP32 +- **Manufacturer** `LilyGO `_ + + +LilyGO T-Beam +""""""""""""" +.. image:: graphics/board_tbeam.png + :width: 75% + :align: center + +- **Supported Firmware Lines** v1.x & v2.x +- **Transceiver IC** Semtech SX1276 +- **Device Platform** ESP32 +- **Manufacturer** `LilyGO `_ + + +Heltec LoRa32 v2.0 +"""""""""""""""""" +.. image:: graphics/board_heltec32.png + :width: 58% + :align: center + +- **Supported Firmware Lines** v1.x & v2.x +- **Transceiver IC** Semtech SX1276 +- **Device Platform** ESP32 +- **Manufacturer** `Heltec Automation `_ + + +Unsigned RNode v2.x +""""""""""""""""""" +.. image:: graphics/board_rnodev2.png + :width: 58% + :align: center + +- **Supported Firmware Lines** v1.x & v2.x +- **Transceiver IC** Semtech SX1276 +- **Device Platform** ESP32 +- **Manufacturer** `unsigned.io `_ + + +Unsigned RNode v1.x +""""""""""""""""""" +.. image:: graphics/board_rnode.png + :width: 50% + :align: center + +- **Supported Firmware Lines** v1.x +- **Transceiver IC** Semtech SX1276 +- **Device Platform** AVR ATmega1284p +- **Manufacturer** `unsigned.io `_ + + +.. _rnode-installation: + +Installation +^^^^^^^^^^^^ + +Once you have obtained compatible boards, you can install the `RNode Firmware `_ +using the `RNode Configuration Utility `_. +If you have installed Reticulum on your system, the ``rnodeconf`` program will already be +available. If not, make sure that ``Python3`` and ``pip`` is installed on your system, and +then install Reticulum with with ``pip``: + +.. code:: + + pip install rns + +Once installation has completed, it is time to start installing the firmware on your +devices. Run ``rnodeconf`` in auto-install mode like so: + +.. code:: + + rnodeconf --autoinstall + +The utility will guide you through the installation process by asking a series of +questions about your hardware. Simply follow the guide, and the utility will +auto-install and configure your devices. + +.. _rnode-usage: + +Usage with Reticulum +^^^^^^^^^^^^^^^^^^^^ +When the devices have been installed and provisioned, you can use them with Reticulum +by adding the :ref:`relevant interface section` to the configuration +file of Reticulum. For v1.x firmwares, you will have to specify all interface parameters, +such as serial port and on-air parameters. For v2.x firmwares, you just need to specify +the Connection ID of the RNode, and Reticulum will automatically locate and connect to the +RNode, using the parameters stored in the RNode itself. + +.. _rnode-suppliers: + +Suppliers +^^^^^^^^^ +Get in touch if you want to have your RNode supplier listed here, or if you want help to +get started with producing RNodes. + + +WiFi-based Hardware +=================== + +It is possible to use all kinds of both short- and long-range WiFi-based hardware +with Reticulum. Any kind of hardware that fully supports bridged Ethernet over the +WiFi interface will work with the :ref:`AutoInterface` in Reticulum. +Most devices will behave like this by default, or allow it via configuration options. + +This means that you can simply configure the physical links of the WiFi based devices, +and start communicating over them using Reticulum. It is not necessary to enable any IP +infrastructure such as DHCP servers, DNS or similar, as long as at least Ethernet is +available, and packets are passed transparently over the physical WiFi-based devices. + +.. only:: html + + .. image:: graphics/radio_rblhg5.png + :width: 49% + + .. image:: graphics/radio_is5ac.png + :width: 49% + +Below is a list of example WiFi (and similar) radios that work well for high capacity +Reticulum links over long distances: + +- `Ubiquiti airMAX radios `_ +- `Ubiquiti LTU radios `_ +- `MikroTik radios `_ + +This list is by no means exhaustive, and only serves as a few examples of radio hardware +that is relatively cheap while providing long range and high capacity for Reticulum +networks. As in all other cases, it is also possible for Reticulum to co-exist with IP +networks running concurrently on such devices. + +Combining Hardware Types +======================== + +It is useful to combine different link and hardware types when designing and +building a network. One useful design pattern is to employ high-capacity point-to-point +links based on WiFi or millimeter-wave radios (with high-gain directional antennas) +for the network backbone, and using LoRa-based RNodes for covering large areas with +connectivity for client devices. diff --git a/build/manual/_sources/index.rst.txt b/build/manual/_sources/index.rst.txt new file mode 100644 index 0000000..867a1e2 --- /dev/null +++ b/build/manual/_sources/index.rst.txt @@ -0,0 +1,43 @@ +****************************** +Reticulum Network Stack Manual +****************************** + +This manual aims to provide you with all the information you need to +understand Reticulum, build networks or develop programs using it, or +to participate in the development of Reticulum itself. + +.. only:: builder_html + + This manual is also available in `PDF `_ and `EPUB `_ formats. + +.. only:: builder_html + + Table Of Contents + ================= + +.. toctree:: + :maxdepth: 3 + + whatis + gettingstartedfast + using + understanding + hardware + interfaces + networks + examples + support + +.. toctree:: + :maxdepth: 2 + + reference + + +.. only:: html + + Indices and Tables + ================== + + * :ref:`genindex` + * :ref:`search` diff --git a/build/manual/_sources/interfaces.rst.txt b/build/manual/_sources/interfaces.rst.txt new file mode 100644 index 0000000..3c2d12a --- /dev/null +++ b/build/manual/_sources/interfaces.rst.txt @@ -0,0 +1,748 @@ + +.. _interfaces-main: + +******************** +Supported Interfaces +******************** + +Reticulum supports using many kinds of devices as networking interfaces, and +allows you to mix and match them in any way you choose. The number of distinct +network topologies you can create with Reticulum is more or less endless, but +common to them all is that you will need to define one or more *interfaces* +for Reticulum to use. + +The following sections describe the interfaces currently available in Reticulum, +and gives example configurations for the respective interface types. + +For a high-level overview of how networks can be formed over different interface +types, have a look at the :ref:`Building Networks` chapter of this +manual. + + +.. _interfaces-auto: + +Auto Interface +============== + +The Auto Interface enables communication with other discoverable Reticulum +nodes over autoconfigured IPv6 and UDP. It does not need any functional IP +infrastructure like routers or DHCP servers, but will require at least some +sort of switching medium between peers (a wired switch, a hub, a WiFi access +point or similar), and that link-local IPv6 is enabled in your operating +system, which should be enabled by default in almost all OSes. + +.. code:: + + # This example demonstrates a TCP server interface. + # It will listen for incoming connections on the + # specified IP address and port number. + + [[Default Interface]] + type = AutoInterface + interface_enabled = True + + # You can create multiple isolated Reticulum + # networks on the same physical LAN by + # specifying different Group IDs. + + group_id = reticulum + + # You can also select specifically which + # kernel networking devices to use. + + devices = wlan0,eth1 + + # Or let AutoInterface use all suitable + # devices except for a list of ignored ones. + + ignored_devices = tun0,eth0 + + +If you are connected to the Internet with IPv6, and your provider will route +IPv6 multicast, you can potentially configure the Auto Interface to globally +autodiscover other Reticulum nodes within your selected Group ID. You can specify +the discovery scope by setting it to one of ``link``, ``admin``, ``site``, +``organisation`` or ``global``. + +.. code:: + + [[Default Interface]] + type = AutoInterface + interface_enabled = True + + # Configure global discovery + + group_id = custom_network_name + discovery_scope = global + + # Other configuration options + + discovery_port = 48555 + data_port = 49555 + + +.. _interfaces-i2p: + +I2P Interface +============= + +The I2P interface lets you connect Reticulum instances over the +`Invisible Internet Protocol `_. This can be +especially useful in cases where you want to host a globally reachable +Reticulum instance, but do not have access to any public IP addresses, +have a frequently changing IP address, or have firewalls blocking +inbound traffic. + +Using the I2P interface, you will get a globally reachable, portable +and persistent I2P address that your Reticulum instance can be reached +at. + +To use the I2P interface, you must have an I2P router running +on your system. The easiest way to achieve this is to download and +install the `latest release `_ +of the ``i2pd`` package. For more details about I2P, see the +`geti2p.net website `_. + +When an I2P router is running on your system, you can simply add +an I2P interface to Reticulum: + +.. code:: + + [[I2P]] + type = I2PInterface + interface_enabled = yes + connectable = yes + +On the first start, Reticulum will generate a new I2P address for the +interface and start listening for inbound traffic on it. This can take +a while the first time, especially if your I2P router was also just +started, and is not yet well-connected to the I2P network. When ready, +you should see I2P base32 address printed to your log file. You can +also inspect the status of the interface using the ``rnstatus`` utility. + +To connect to other Reticulum instances over I2P, just add a comma-separated +list of I2P base32 addresses to the ``peers`` option of the interface: + +.. code:: + + [[I2P]] + type = I2PInterface + interface_enabled = yes + connectable = yes + peers = 5urvjicpzi7q3ybztsef4i5ow2aq4soktfj7zedz53s47r54jnqq.b32.i2p + +It can take anywhere from a few seconds to a few minutes to establish +I2P connections to the desired peers, so Reticulum handles the process +in the background, and will output relevant events to the log. + +**Please Note!** While the I2P interface is the simplest way to use +Reticulum over I2P, it is also possible to tunnel the TCP server and +client interfaces over I2P manually. This can be useful in situations +where more control is needed, but requires manual tunnel setup through +the I2P daemon configuration. + +It is important to note that the two methods are *interchangably compatible*. +You can use the I2PInterface to connect to a TCPServerInterface that +was manually tunneled over I2P, for example. This offers a high degree +of flexibility in network setup, while retaining ease of use in simpler +use-cases. + + +.. _interfaces-tcps: + +TCP Server Interface +==================== + +The TCP Server interface is suitable for allowing other peers to connect over +the Internet or private IP networks. When a TCP server interface has been +configured, other Reticulum peers can connect to it with a TCP Client interface. + +.. code:: + + # This example demonstrates a TCP server interface. + # It will listen for incoming connections on the + # specified IP address and port number. + + [[TCP Server Interface]] + type = TCPServerInterface + interface_enabled = True + + # This configuration will listen on all IP + # interfaces on port 4242 + + listen_ip = 0.0.0.0 + listen_port = 4242 + + # Alternatively you can bind to a specific IP + + # listen_ip = 10.0.0.88 + # listen_port = 4242 + + # Or a specific network device + + # device = eth0 + # port = 4242 + +**Please Note!** The TCP interfaces support tunneling over I2P, but to do so reliably, +you must use the i2p_tunneled option: + +.. code:: + + [[TCP Server on I2P]] + type = TCPServerInterface + interface_enabled = yes + listen_ip = 127.0.0.1 + listen_port = 5001 + i2p_tunneled = yes + +In almost all cases, it is easier to use the dedicated ``I2PInterface``, but for complete +control, and using I2P routers running on external systems, this option also exists. + +.. _interfaces-tcpc: + +TCP Client Interface +==================== + +To connect to a TCP server interface, you would naturally use the TCP client +interface. Many TCP Client interfaces from different peers can connect to the +same TCP Server interface at the same time. + +The TCP interface types can also tolerate intermittency in the IP link layer. +This means that Reticulum will gracefully handle IP links that go up and down, +and restore connectivity after a failure, once the other end of a TCP interface reappears. + +.. code:: + + # Here's an example of a TCP Client interface. The + # target_host can either be an IP address or a hostname. + + [[TCP Client Interface]] + type = TCPClientInterface + interface_enabled = True + target_host = 127.0.0.1 + target_port = 4242 + +It is also possible to use this interface type to connect via other programs +or hardware devices that expose a KISS interface on a TCP port, for example +software-based soundmodems. To do this, use the ``kiss_framing`` option: + +.. code:: + + # Here's an example of a TCP Client interface that connects + # to a software TNC soundmodem on a KISS over TCP port. + + [[TCP KISS Interface]] + type = TCPClientInterface + interface_enabled = True + kiss_framing = True + target_host = 127.0.0.1 + target_port = 8001 + +**Caution!** Only use the KISS framing option when connecting to external devices +and programs like soundmodems and similar over TCP. When using the +``TCPClientInterface`` in conjunction with the ``TCPServerInterface`` you should +never enable ``kiss_framing``, since this will disable internal reliability and +recovery mechanisms that greatly improves performance over unreliable and +intermittent TCP links. + +**Please Note!** The TCP interfaces support tunneling over I2P, but to do so reliably, +you must use the i2p_tunneled option: + +.. code:: + + [[TCP Client over I2P]] + type = TCPClientInterface + interface_enabled = yes + target_host = 127.0.0.1 + target_port = 5001 + i2p_tunneled = yes + + +.. _interfaces-udp: + +UDP Interface +============= + +A UDP interface can be useful for communicating over IP networks, both +private and the internet. It can also allow broadcast communication +over IP networks, so it can provide an easy way to enable connectivity +with all other peers on a local area network. + +*Please Note!* Using broadcast UDP traffic has performance implications, +especially on WiFi. If your goal is simply to enable easy communication +with all peers in your local Ethernet broadcast domain, the +:ref:`Auto Interface` performs better, and is even +easier to use. + +.. code:: + + # This example enables communication with other + # local Reticulum peers over UDP. + + [[UDP Interface]] + type = UDPInterface + interface_enabled = True + + listen_ip = 0.0.0.0 + listen_port = 4242 + forward_ip = 255.255.255.255 + forward_port = 4242 + + # The above configuration will allow communication + # within the local broadcast domains of all local + # IP interfaces. + + # Instead of specifying listen_ip, listen_port, + # forward_ip and forward_port, you can also bind + # to a specific network device like below. + + # device = eth0 + # port = 4242 + + # Assuming the eth0 device has the address + # 10.55.0.72/24, the above configuration would + # be equivalent to the following manual setup. + # Note that we are both listening and forwarding to + # the broadcast address of the network segments. + + # listen_ip = 10.55.0.255 + # listen_port = 4242 + # forward_ip = 10.55.0.255 + # forward_port = 4242 + + # You can of course also communicate only with + # a single IP address + + # listen_ip = 10.55.0.15 + # listen_port = 4242 + # forward_ip = 10.55.0.16 + # forward_port = 4242 + + +.. _interfaces-rnode: + +RNode LoRa Interface +==================== + +To use Reticulum over LoRa, the `RNode `_ interface +can be used, and offers full control over LoRa parameters. + +.. code:: + + # Here's an example of how to add a LoRa interface + # using the RNode LoRa transceiver. + + [[RNode LoRa Interface]] + type = RNodeInterface + + # Enable interface if you want use it! + interface_enabled = True + + # Serial port for the device + port = /dev/ttyUSB0 + + # Set frequency to 867.2 MHz + frequency = 867200000 + + # Set LoRa bandwidth to 125 KHz + bandwidth = 125000 + + # Set TX power to 7 dBm (5 mW) + txpower = 7 + + # Select spreading factor 8. Valid + # range is 7 through 12, with 7 + # being the fastest and 12 having + # the longest range. + spreadingfactor = 8 + + # Select coding rate 5. Valid range + # is 5 throough 8, with 5 being the + # fastest, and 8 the longest range. + codingrate = 5 + + # You can configure the RNode to send + # out identification on the channel with + # a set interval by configuring the + # following two parameters. + # id_callsign = MYCALL-0 + # id_interval = 600 + + # For certain homebrew RNode interfaces + # with low amounts of RAM, using packet + # flow control can be useful. By default + # it is disabled. + flow_control = False + +.. _interfaces-serial: + +Serial Interface +================ + +Reticulum can be used over serial ports directly, or over any device with a +serial port, that will transparently pass data. Useful for communicating +directly over a wire-pair, or for using devices such as data radios and lasers. + +.. code:: + + [[Serial Interface]] + type = SerialInterface + interface_enabled = True + + # Serial port for the device + port = /dev/ttyUSB0 + + # Set the serial baud-rate and other + # configuration parameters. + speed = 115200 + databits = 8 + parity = none + stopbits = 1 + +.. _interfaces-pipe: + +Pipe Interface +============== + +Using this interface, Reticulum can use any program as an interface via `stdin` and +`stdout`. This can be used to easily create virtual interfaces, or to interface with +custom hardware or other systems. + +.. code:: + + [[Pipe Interface]] + type = PipeInterface + interface_enabled = True + + # External command to execute + command = netcat -l 5757 + + # Optional respawn delay, in seconds + respawn_delay = 5 + +Reticulum will write all packets to `stdin` of the ``command`` option, and will +continuously read and scan its `stdout` for Reticulum packets. If ``EOF`` is reached, +Reticulum will try to respawn the program after waiting for ``respawn_interval`` seconds. + +.. _interfaces-kiss: + +KISS Interface +============== + +With the KISS interface, you can use Reticulum over a variety of packet +radio modems and TNCs, including `OpenModem `_. +KISS interfaces can also be configured to periodically send out beacons +for station identification purposes. + +.. code:: + + [[Packet Radio KISS Interface]] + type = KISSInterface + interface_enabled = True + + # Serial port for the device + port = /dev/ttyUSB1 + + # Set the serial baud-rate and other + # configuration parameters. + speed = 115200 + databits = 8 + parity = none + stopbits = 1 + + # Set the modem preamble. + preamble = 150 + + # Set the modem TX tail. + txtail = 10 + + # Configure CDMA parameters. These + # settings are reasonable defaults. + persistence = 200 + slottime = 20 + + # You can configure the interface to send + # out identification on the channel with + # a set interval by configuring the + # following two parameters. The KISS + # interface will only ID if the set + # interval has elapsed since it's last + # actual transmission. The interval is + # configured in seconds. + # This option is commented out and not + # used by default. + # id_callsign = MYCALL-0 + # id_interval = 600 + + # Whether to use KISS flow-control. + # This is useful for modems that have + # a small internal packet buffer, but + # support packet flow control instead. + flow_control = false + +.. _interfaces-ax25: + +AX.25 KISS Interface +==================== + +If you're using Reticulum on amateur radio spectrum, you might want to +use the AX.25 KISS interface. This way, Reticulum will automatically +encapsulate it's traffic in AX.25 and also identify your stations +transmissions with your callsign and SSID. + +Only do this if you really need to! Reticulum doesn't need the AX.25 +layer for anything, and it incurs extra overhead on every packet to +encapsulate in AX.25. + +A more efficient way is to use the plain KISS interface with the +beaconing functionality described above. + +.. code:: + + [[Packet Radio AX.25 KISS Interface]] + type = AX25KISSInterface + + # Set the station callsign and SSID + callsign = NO1CLL + ssid = 0 + + # Enable interface if you want use it! + interface_enabled = True + + # Serial port for the device + port = /dev/ttyUSB2 + + # Set the serial baud-rate and other + # configuration parameters. + speed = 115200 + databits = 8 + parity = none + stopbits = 1 + + # Set the modem preamble. A 150ms + # preamble should be a reasonable + # default, but may need to be + # increased for radios with slow- + # opening squelch and long TX/RX + # turnaround + preamble = 150 + + # Set the modem TX tail. In most + # cases this should be kept as low + # as possible to not waste airtime. + txtail = 10 + + # Configure CDMA parameters. These + # settings are reasonable defaults. + persistence = 200 + slottime = 20 + + # Whether to use KISS flow-control. + # This is useful for modems with a + # small internal packet buffer. + flow_control = false + +.. _interfaces-options: + +Common Interface Options +======================== + +A number of general configuration options are available on most interfaces. +These can be used to control various aspects of interface behaviour. + + + * | The ``enabled`` option tells Reticulum whether or not + to bring up the interface. Defaults to ``False``. For any + interface to be brought up, the ``enabled`` option + must be set to ``True`` or ``Yes``. + + * | The ``mode`` option allows selecting the high-level behaviour + of the interface from a number of options. + + - The default value is ``full``. In this mode, all discovery, + meshing and transport functionality is available. + + - In the ``access_point`` (or shorthand ``ap``) mode, the + interface will operate as a network access point. In this + mode, announces will not be automatically broadcasted on + the interface, and paths to destinations on the interface + will have a much shorter expiry time. This mode is useful + for creating interfaces that are mostly quiet, unless when + someone is actually using them. An example of this could + be a radio interface serving a wide area, where users are + expected to connect momentarily, use the network, and then + disappear again. + + * | The ``outgoing`` option sets whether an interface is allowed + to transmit. Defaults to ``True``. If set to ``False`` or ``No`` + the interface will only receive data, and never transmit. + + * | The ``network_name`` option sets the virtual network name for + the interface. This allows multiple separate network segments + to exist on the same physical channel or medium. + + * | The ``passphrase`` option sets an authentication passphrase on + the interface. This option can be used in conjunction with the + ``network_name`` option, or be used alone. + + * | The ``ifac_size`` option allows customising the length of the + Interface Authentication Codes carried by each packet on named + and/or authenticated network segments. It is set by default to + a size suitable for the interface in question, but can be set + to a custom size between 8 and 512 bits by using this option. + In normal usage, this option should not be changed from the + default. + + * | The ``announce_cap`` option lets you configure the maximum + bandwidth to allocate, at any given time, to propagating + announces and other network upkeep traffic. It is configured at + 2% by default, and should normally not need to be changed. Can + be set to any value between ``1`` and ``100``. + + *If an interface exceeds its announce cap, it will queue announces + for later transmission. Reticulum will always prioritise propagating + announces from nearby nodes first. This ensures that the local + topology is prioritised, and that slow networks are not overwhelmed + by interconnected fast networks.* + + *Destinations that are rapidly re-announcing will be down-prioritised + further. Trying to get "first-in-line" by announce spamming will have + the exact opposite effect: Getting moved to the back of the queue every + time a new announce from the excessively announcing destination is received.* + + *This means that it is always beneficial to select a balanced + announce rate, and not announce more often than is actually necesarry + for your application to function.* + + * | The ``bitrate`` option configures the interface bitrate. + Reticulum will use interface speeds reported by hardware, or + try to guess a suitable rate when the hardware doesn't report + any. In most cases, the automatically found rate should be + sufficient, but it can be configured by using the ``bitrate`` + option, to set the interface speed in *bits per second*. + + +.. _interfaces-modes: + +Interface Modes +=============== + +The optional ``mode`` setting is available on all interfaces, and allows +selecting the high-level behaviour of the interface from a number of modes. +These modes affect how Reticulum selects paths in the network, how announces +are propagated, how long paths are valid and how paths are discovered. + +Configuring modes on interfaces is **not** strictly necessary, but can be useful +when building or connecting to more complex networks. If your Reticulum +instance is not running a Transport Node, it is rarely useful to configure +interface modes, and in such cases interfaces should generally be left in +the default mode. + + * | The default mode is ``full``. In this mode, all discovery, + meshing and transport functionality is activated. + + * | The ``gateway`` mode (or shorthand ``gw``) also has all + discovery, meshing and transport functionality available, + but will additionally try to discover unknown paths on + behalf of other nodes residing on the ``gateway`` interface. + If Reticulum receives a path request for an unknown + destination, from a node on a ``gateway`` interface, it + will try to discover this path via all other active interfaces, + and forward the discovered path to the requestor if one is + found. + + | If you want to allow other nodes to widely resolve paths or connect + to a network via an interface, it might be useful to put it in this + mode. By creating a chain of ``gateway`` interfaces, other + nodes will be able to immediately discover paths to any + destination along the chain. + + | *Please note!* It is the interface *facing the clients* that + must be put into ``gateway`` mode for this to work, not + the interface facing the wider network (for this, the ``boundary`` + mode can be useful, though). + + * | In the ``access_point`` (or shorthand ``ap``) mode, the + interface will operate as a network access point. In this + mode, announces will not be automatically broadcasted on + the interface, and paths to destinations on the interface + will have a much shorter expiry time. In addition, path + requests from clients on the access point interface will + be handled in the same way as the ``gateway`` interface. + + | This mode is useful for creating interfaces that remain + quiet, until someone actually starts using them. An example + of this could be a radio interface serving a wide area, + where users are expected to connect momentarily, use the + network, and then disappear again. + + * | The ``roaming`` mode should be used on interfaces that are + roaming (physically mobile), seen from the perspective of + other nodes in the network. As an example, if a vehicle is + equipped with an external LoRa interface, and an internal, + WiFi-based interface, that serves devices that are moving + *with* the vehicle, the external LoRa interface should be + configured as ``roaming``, and the internal interface can + be left in the default mode. With transport enabled, such + a setup will allow all internal devices to reach each other, + and all other devices that are available on the LoRa side + of the network, when they are in range. Devices on the LoRa + side of the network will also be able to reach devices + internal to the vehicle, when it is in range. Paths via + ``roaming`` interfaces also expire faster. + + * | The purpose of the ``boundary`` mode is to specify interfaces + that establish connectivity with network segments that are + significantly different than the one this node exists on. + As an example, if a Reticulum instance is part of a LoRa-based + network, but also has a high-speed connection to a + public Transport Node available on the Internet, the interface + connecting over the Internet should be set to ``boundary`` mode. + +For a table describing the impact of all modes on announce propagation, +please see the :ref:`Announce Propagation Rules` section. + +.. _interfaces-announcerates: + +Announce Rate Control +===================== + +The built-in announce control mechanisms and the default ``announce_cap`` +option described above are sufficient most of the time, but in some cases, especially on fast +interfaces, it may be useful to control the target announce rate. Using the +``announce_rate_target``, ``announce_rate_grace`` and ``announce_rate_penalty`` +options, this can be done on a per-interface basis, and moderates the *rate at +which received announces are re-broadcasted to other interfaces*. + + * | The ``announce_rate_target`` option sets the minimum amount of time, + in seconds, that should pass between received announces, for any one + destination. As an example, setting this value to ``3600`` means that + announces *received* on this interface will only be re-transmitted and + propagated to other interfaces once every hour, no matter how often they + are received. + + * | The optional ``announce_rate_grace`` defines the number of times a destination + can violate the announce rate before the target rate is enforced. + + * | The optional ``announce_rate_penalty`` configures an extra amount of + time that is added to the normal rate target. As an example, if a penalty + of ``7200`` seconds is defined, once the rate target is enforced, the + destination in question will only have its announces propagated every + 3 hours, until it lowers its actual announce rate to within the target. + +These mechanisms, in conjunction with the ``annouce_cap`` mechanisms mentioned +above means that it is essential to select a balanced announce strategy for +your destinations. The more balanced you can make this decision, the easier +it will be for your destinations to make it into slower networks that many hops +away. Or you can prioritise only reaching high-capacity networks with more frequent +announces. + +Current statistics and information about announce rates can be viewed using the +``rnpath -r`` command. + +It is important to note that there is no one right or wrong way to set up announce +rates. Slower networks will naturally tend towards using less frequent announces to +conserve bandwidth, while very fast networks can support applications that +need very frequent announces. Reticulum implements these mechanisms to ensure +that a large span of network types can seamlessly *co-exist* and interconnect. + diff --git a/build/manual/_sources/networks.rst.txt b/build/manual/_sources/networks.rst.txt new file mode 100644 index 0000000..f818771 --- /dev/null +++ b/build/manual/_sources/networks.rst.txt @@ -0,0 +1,169 @@ +.. _networks-main: + +***************** +Building Networks +***************** + +This chapter will provide you with the knowledge needed to build networks with +Reticulum, which can often be easier than using traditional stacks, since you +don't have to worry about coordinating addresses, subnets and routing for an +entire network that you might not know how will evolve in the future. With +Reticulum, you can simply add more segments to your network when it becomes +necessary, and Reticulum will handle the convergence of the entire network +automatically. + +Concepts & Overview +-------------------- + +There are important points that need to be kept in mind when building networks +with Reticulum: + + * | In a Reticulum network, any node can autonomously generate as many addresses + (called *destinations* in Reticulum terminology) as it needs, which become + globally reachable to the rest of the network. There is no central point of + control over the address space. + + * | Reticulum was designed to handle both very small, and very large networks. + While the address space can support billions of endpoints, Reticulum is + also very useful when just a few devices needs to communicate. + + * | Low-bandwidth networks, like LoRa and packet radio, can interoperate and + interconnect with much larger and higher bandwidth networks without issue. + Reticulum automatically manages the flow of information to and from various + network segments, and when bandwidth is limited, local traffic is prioritised. + + * | Reticulum provides sender/initiator anonymity by default. There is no way + to filter traffic or discriminate it based on the source of the traffic. + + * | All traffic is encrypted using ephemeral keys generated by an Elliptic Curve + Diffie-Hellman key exchange on Curve25519. There is no way to inspect traffic + contents, and no way to prioritise or throttle certain kinds of traffic. + All transport and routing layers are thus completely agnostic to traffic type, + and will pass all traffic equally. + + * | Reticulum can function both with and without infrastructure. When *transport + nodes* are available, they can route traffic over multiple hops for other + nodes, and will function as a distributed cryptographic keystore. When there + is no transport nodes available, all nodes that are within communication range + can still communicate. + + * | Every node can become a transport node, simply by enabling it in it's + configuration, but there is no need for every node on the network to be a + transport node. Letting every node be a transport node will in most cases + degrade the performance and reliability of the network. + + *In general terms, if a node is stationary, well-connected and kept running + most of the time, it is a good candidate to be a transport node. For optimal + performance, a network should contain the amount of transport nodes that + provides connectivity to the intended area / topography, and not many more + than that.* + + * | Reticulum is designed to work reliably in open, trustless environments. This + means you can use it to create open-access networks, where participants can + join and leave in an free and unorganised manner. This property allows an + entirely new, and so far, mostly unexplored class of networked applications, + where networks, and the information flow within them can form and dissolve + organically. + + * | You can just as easily create closed networks, since Reticulum allows you to + add authentication to any interface. This means you can restrict access on + any interface type, even when using legacy devices, such as modems. You can + also mix authenticated and open interfaces on the same system. See the + :ref:`Common Interface Options` section of the :ref:`Interfaces` + chapter of this manual for information on how to set up interface authentication. + + +Reticulum allows you to mix very different kinds of networking mediums into a +unified mesh, or to keep everything within one medium. You could build a "virtual +network" running entirely over the Internet, where all nodes communicate over TCP +and UDP "channels". You could also build such a network using other already-established +communications channels as the underlying carrier for Reticulum. + +However, most real-world networks will probably involve either some form of +wireless or direct hardline communications. To allow Reticulum to communicate +over any type of medium, you must specify it in the configuration file, by default +located at ``~/.reticulum/config``. See the :ref:`Supported Interfaces` +chapter of this manual for interface configuration examples. + +Any number of interfaces can be configured, and Reticulum will automatically +decide which are suitable to use in any given situation, depending on where +traffic needs to flow. + +Example Scenarios +----------------- + +This section illustrates a few example scenarios, and how they would, in general +terms, be planned, implemented and configured. + +Interconnected LoRa Sites +========================= + +An organisation wants to provide communication and information services to it's +members, which are located mainly in three separate areas. Three suitable hill-top +locations are found, where the organisation can install equipment: Site A, B and C. + +Since the amount of data that needs to be exchanged between users is mainly text- +based, the bandwidth requirements are low, and LoRa radios are chosen to connect +users to the network. + +Due to the hill-top locations found, there is radio line-of-sight between site A +and B, and also between site B and C. Because of this, the organisation does not +need to use the Internet to interconnect the sites, but purchases four Point-to-Point +WiFi based radios for interconnecting the sites. + +At each site, a Raspberry Pi is installed to function as a gateway. A LoRa radio +is connected to the Pi with a USB cable, and the WiFi radio is connected to the +Ethernet port of the Pi. At site B, two WiFi radios are needed to be able to reach +both site A and site C, so an extra Ethernet adapter is connected to the Pi in +this location. + +Once the hardware has been installed, Reticulum is installed on all the Pis, and at +site A and C, one interface is added for the LoRa radio, as well as one for the WiFi +radio. At site B, an interface for the LoRa radio, and one interface for each WiFi +radio is added to the Reticulum configuration file. The transport node option is +enabled in the configuration of all three gateways. + +The network is now operational, and ready to serve users across all three areas. +The organisation prepares a LoRa radio that is supplied to the end users, along +with a Reticulum configuration file, that contains the right parameters for +communicating with the LoRa radios installed at the gateway sites. + +Once users connect to the network, anyone will be able to communicate with anyone +else across all three sites. + +Bridging Over the Internet +========================== + +As the organisation grows, several new communities form in places too far away +from the core network to be reachable over WiFi links. New gateways similar to those +previously installed are set up for the new communities at the new sites D and E, but +they are islanded from the core network, and only serve the local users. + +After investigating the options, it is found that it is possible to install an +Internet connection at site A, and an interface on the Internet connection is +configured for Reticulum on the Raspberry Pi at site A. + +A member of the organisation at site D, named Dori, is willing to help by sharing +the Internet connection she already has in her home, and is able to leave a Raspberry +Pi running. A new Reticulum interface is configured on her Pi, connecting to the newly +enabled Internet interface on the gateway at site A. Dori is now connected to both +all the nodes at her own local site (through the hill-top LoRa gateway), and all the +combined users of sites A, B and C. She then enables transport on her node, and +traffic from site D can now reach everyone at site A, B and C, and vice versa. + +Growth and Convergence +====================== + +As the organisation grows, more gateways are added to keep up with the growing user +base. Some local gateways even add VHF radios and packet modems to reach outlying users +and communities that are out of reach for the LoRa radios and WiFi backhauls. + +As more sites, gateways and users are connected, the amount of coordination required +is kept to a minimum. If one community wants to add connectivity to the next one +over, it can simply be done without having to involve everyone or coordinate address +space or routing tables. + +With the added geographical coverage, the operators at site A one day find that +the original internet bridged interfaces are no longer utilised. The network has +converged to be completely self-connected, and the sites that were once poorly +connected outliers are now an integral part of the network. diff --git a/build/manual/_sources/reference.rst.txt b/build/manual/_sources/reference.rst.txt new file mode 100644 index 0000000..d789201 --- /dev/null +++ b/build/manual/_sources/reference.rst.txt @@ -0,0 +1,214 @@ +:tocdepth: 4 + +.. _api-main: + +************* +API Reference +************* +Communication over Reticulum networks is achieved by using a simple set of classes exposed by the RNS API. +This chapter lists and explains all classes exposed by the Reticulum Network Stack API, along with their method signatures and usage. It can be used as a reference while writing applications that utilise Reticulum, or it can be read in entirity to gain an understanding of the complete functionality of RNS from a developers perspective. + +.. _api-reticulum: + +.. only:: html + + |start-h3| Reticulum |end-h3| + +.. only:: latex + + Reticulum + --------- + +.. autoclass:: RNS.Reticulum + :members: + + +.. _api-identity: + +.. only:: html + + |start-h3| Identity |end-h3| + +.. only:: latex + + Identity + -------- + +.. autoclass:: RNS.Identity + :members: + +.. _api-destination: + +.. only:: html + + |start-h3| Destination |end-h3| + +.. only:: latex + + Destination + ----------- + +.. autoclass:: RNS.Destination + :members: + +.. _api-packet: + +.. only:: html + + |start-h3| Packet |end-h3| + +.. only:: latex + + Packet + ------ + +.. autoclass:: RNS.Packet(destination, data, create_receipt = True) + :members: + +.. _api-packetreceipt: + +.. only:: html + + |start-h3| Packet Receipt |end-h3| + +.. only:: latex + + Packet Receipt + -------------- + +.. autoclass:: RNS.PacketReceipt() + :members: + +.. _api-link: + +.. only:: html + + |start-h3| Link |end-h3| + +.. only:: latex + + Link + ---- + +.. autoclass:: RNS.Link(destination, established_callback=None, closed_callback = None) + :members: + +.. _api-requestreceipt: + +.. only:: html + + |start-h3| Request Receipt |end-h3| + +.. only:: latex + + Request Receipt + --------------- + +.. autoclass:: RNS.RequestReceipt() + :members: + +.. _api-resource: + +.. only:: html + + |start-h3| Resource |end-h3| + +.. only:: latex + + Resource + -------- + +.. autoclass:: RNS.Resource(data, link, advertise=True, auto_compress=True, callback=None, progress_callback=None, timeout=None) + :members: + +.. _api-channel: + +.. only:: html + + |start-h3| Channel |end-h3| + +.. only:: latex + + Channel + ------- + +.. autoclass:: RNS.Channel.Channel() + :members: + +.. _api-messsagebase: + +.. only:: html + + |start-h3| MessageBase |end-h3| + +.. only:: latex + + MessageBase + ----------- + +.. autoclass:: RNS.MessageBase() + :members: + +.. _api-buffer: + +.. only:: html + + |start-h3| Buffer |end-h3| + +.. only:: latex + + Buffer + ------ + +.. autoclass:: RNS.Buffer + :members: + +.. _api-rawchannelreader: + +.. only:: html + + |start-h3| RawChannelReader |end-h3| + +.. only:: latex + + RawChannelReader + ---------------- + +.. autoclass:: RNS.RawChannelReader + :members: __init__, add_ready_callback, remove_ready_callback + +.. _api-rawchannelwriter: + +.. only:: html + + |start-h3| RawChannelWriter |end-h3| + +.. only:: latex + + RawChannelWriter + ---------------- + +.. autoclass:: RNS.RawChannelWriter + :members: __init__ + +.. _api-transport: + +.. only:: html + + |start-h3| Transport |end-h3| + +.. only:: latex + + Transport + --------- + +.. autoclass:: RNS.Transport + :members: + +.. |start-h3| raw:: html + +

+ +.. |end-h3| raw:: html + +

\ No newline at end of file diff --git a/build/manual/_sources/support.rst.txt b/build/manual/_sources/support.rst.txt new file mode 100644 index 0000000..a8e0470 --- /dev/null +++ b/build/manual/_sources/support.rst.txt @@ -0,0 +1,42 @@ +.. _support-main: + +***************** +Support Reticulum +***************** +You can help support the continued development of open, free and private communications +systems by donating, providing feedback and contributing code and learning resources. + +Donations +========= +Donations are gratefully accepted via the following channels: + + +.. code:: text + + Monero: + 84FpY1QbxHcgdseePYNmhTHcrgMX4nFfBYtz2GKYToqHVVhJp8Eaw1Z1EedRnKD19b3B8NiLCGVxzKV17UMmmeEsCrPyA5w + + Ethereum: + 0x81F7B979fEa6134bA9FD5c701b3501A2e61E897a + + Bitcoin: + 3CPmacGm34qYvR6XWLVEJmi2aNe3PZqUuq + + Ko-Fi: + https://ko-fi.com/markqvist + +Are certain features in the development roadmap are important to you or your +organisation? Make them a reality quickly by sponsoring their implementation. + +Provide Feedback +================ +All feedback on the usage, functioning and potential dysfunctioning of any and +all components of the system is very valuable to the continued development and +improvement of Reticulum. Absolutely no automated analytics, telemetry, error +reporting or statistics is collected and reported by Reticulum under any +circumstances, so we rely on old-fashioned human feedback. + +Contribute Code +=============== +Join us on `the GitHub repository `_ to +report issues, suggest functionality and contribute code to Reticulum. diff --git a/build/manual/_sources/understanding.rst.txt b/build/manual/_sources/understanding.rst.txt new file mode 100644 index 0000000..85fd294 --- /dev/null +++ b/build/manual/_sources/understanding.rst.txt @@ -0,0 +1,897 @@ +.. _understanding-main: + +*********************** +Understanding Reticulum +*********************** +This chapter will briefly describe the overall purpose and operating principles of Reticulum. +It should give you an overview of how the stack works, and an understanding of how to +develop networked applications using Reticulum. + +This chapter is not an exhaustive source of information on Reticulum, at least not yet. Currently, +the only complete repository, and final authority on how Reticulum actually functions, is the Python +reference implementation and API reference. That being said, this chapter is an essential resource in +understanding how Reticulum works from a high-level perspective, along with the general principles of +Reticulum, and how to apply them when creating your own networks or software. + +After reading this document, you should be well-equipped to understand how a Reticulum network +operates, what it can achieve, and how you can use it yourself. If you want to help out with the +development, this is also the place to start, since it will provide a pretty clear overview of the +sentiments and the philosophy behind Reticulum, what problems it seeks to solve, and how it +approaches those solutions. + +.. _understanding-motivation: + +Motivation +========== + +The primary motivation for designing and implementing Reticulum has been the current lack of +reliable, functional and secure minimal-infrastructure modes of digital communication. It is my +belief that it is highly desirable to create a reliable and efficient way to set up long-range digital +communication networks that can securely allow exchange of information between people and +machines, with no central point of authority, control, censorship or barrier to entry. + +Almost all of the various networking systems in use today share a common limitation: They +require large amounts of coordination and centralised trust and power to function. To join such networks, you need approval +of gatekeepers in control. This need for coordination and trust inevitably leads to an environment of +central control, where it's very easy for infrastructure operators or governments to control or alter +traffic, and censor or persecute unwanted actors. It also makes it completely impossible to freely deploy +and use networks at will, like one would use other common tools that enhance individual agency and freedom. + +Reticulum aims to require as little coordination and trust as possible. It aims to make secure, +anonymous and permissionless networking and information exchange a tool that anyone can just pick up and use. + +Since Reticulum is completely medium agnostic, it can be used to build networks on whatever is best +suited to the situation, or whatever you have available. In some cases, this might be packet radio +links over VHF frequencies, in other cases it might be a 2.4 GHz +network using off-the-shelf radios, or it might be using common LoRa development boards. + +At the time of release of this document, the fastest and easiest setup for development and testing is using +LoRa radio modules with an open source firmware (see the section :ref:`Reference Setup`), +connected to any kind of computer or mobile device that Reticulum can run on. + +The ultimate aim of Reticulum is to allow anyone to be their own network operator, and to make it +cheap and easy to cover vast areas with a myriad of independent, interconnectable and autonomous networks. +Reticulum **is not** *one network*, it **is a tool** to build *thousands of networks*. Networks without +kill-switches, surveillance, censorship and control. Networks that can freely interoperate, associate and disassociate +with each other, and require no central oversight. Networks for human beings. *Networks for the people*. + +.. _understanding-goals: + +Goals +===== + +To be as widely usable and efficient to deploy as possible, the following goals have been used to +guide the design of Reticulum: + + +* **Fully useable as open source software stack** + Reticulum must be implemented with, and be able to run using only open source software. This is + critical to ensuring the availability, security and transparency of the system. +* **Hardware layer agnosticism** + Reticulum must be fully hardware agnostic, and shall be useable over a wide range of + physical networking layers, such as data radios, serial lines, modems, handheld transceivers, + wired Ethernet, WiFi, or anything else that can carry a digital data stream. Hardware made for + dedicated Reticulum use shall be as cheap as possible and use off-the-shelf components, so + it can be easily modified and replicated by anyone interested in doing so. +* **Very low bandwidth requirements** + Reticulum should be able to function reliably over links with a transmission capacity as low + as *500 bits per second*. +* **Encryption by default** + Reticulum must use strong encryption by default for all communication. +* **Initiator Anonymity** + It must be possible to communicate over a Reticulum network without revealing any identifying + information about oneself. +* **Unlicensed use** + Reticulum shall be functional over physical communication mediums that do not require any + form of license to use. Reticulum must be designed in a way, so it is usable over ISM radio + frequency bands, and can provide functional long distance links in such conditions, for example + by connecting a modem to a PMR or CB radio, or by using LoRa or WiFi modules. +* **Supplied software** + In addition to the core networking stack and API, that allows a developer to build + applications with Reticulum, a basic set of Reticulum-based communication tools must be + implemented and released along with Reticulum itself. These shall serve both as a + functional, basic communication suite, and as an example and learning resource to others wishing + to build applications with Reticulum. +* **Ease of use** + The reference implementation of Reticulum is written in Python, to make it easy to use + and understand. A programmer with only basic experience should be able to use + Reticulum to write networked applications. +* **Low cost** + It shall be as cheap as possible to deploy a communication system based on Reticulum. This + should be achieved by using cheap off-the-shelf hardware that potential users might already + own. The cost of setting up a functioning node should be less than $100 even if all parts + needs to be purchased. + +.. _understanding-basicfunctionality: + +Introduction & Basic Functionality +================================== + +Reticulum is a networking stack suited for high-latency, low-bandwidth links. Reticulum is at its +core a *message oriented* system. It is suited for both local point-to-point or point-to-multipoint +scenarios where all nodes are within range of each other, as well as scenarios where packets need +to be transported over multiple hops in a complex network to reach the recipient. + +Reticulum does away with the idea of addresses and ports known from IP, TCP and UDP. Instead +Reticulum uses the singular concept of *destinations*. Any application using Reticulum as its +networking stack will need to create one or more destinations to receive data, and know the +destinations it needs to send data to. + +All destinations in Reticulum are _represented_ as a 16 byte hash. This hash is derived from truncating a full +SHA-256 hash of identifying characteristics of the destination. To users, the destination addresses +will be displayed as 16 hexadecimal bytes, like this example: ``<13425ec15b621c1d928589718000d814>``. + +The truncation size of 16 bytes (128 bits) for destinations has been chosen as a reasonable trade-off +between address space +and packet overhead. The address space accommodated by this size can support many billions of +simultaneously active devices on the same network, while keeping packet overhead low, which is +essential on low-bandwidth networks. In the very unlikely case that this address space nears +congestion, a one-line code change can upgrade the Reticulum address space all the way up to 256 +bits, ensuring the Reticulum address space could potentially support galactic-scale networks. +This is obviously complete and ridiculous over-allocation, and as such, the current 128 bits should +be sufficient, even far into the future. + +By default Reticulum encrypts all data using elliptic curve cryptography and AES. Any packet sent to a +destination is encrypted with a per-packet derived key. Reticulum can also set up an encrypted +channel to a destination, called a *Link*. Both data sent over Links and single packets offer +*Initiator Anonymity*, and links additionally offer *Forward Secrecy* by using an Elliptic Curve +Diffie Hellman key exchange on Curve25519 to derive per-link ephemeral keys. The multi-hop transport, +coordination, verification and reliability layers are fully autonomous and also based on elliptic +curve cryptography. + +Reticulum also offers symmetric key encryption for group-oriented communications, as well as +unencrypted packets for local broadcast purposes. + +Reticulum can connect to a variety of interfaces such as radio modems, data radios and serial ports, +and offers the possibility to easily tunnel Reticulum traffic over IP links such as the Internet or +private IP networks. + +.. _understanding-destinations: + +Destinations +------------ + +To receive and send data with the Reticulum stack, an application needs to create one or more +destinations. Reticulum uses three different basic destination types, and one special: + + +* **Single** + The *single* destination type is the most common type in Reticulum, and should be used for + most purposes. It is always identified by a unique public key. Any data sent to this + destination will be encrypted using ephemeral keys derived from an ECDH key exchange, and will + only be readable by the creator of the destination, who holds the corresponding private key. +* **Plain** + A *plain* destination type is unencrypted, and suited for traffic that should be broadcast to a + number of users, or should be readable by anyone. Traffic to a *plain* destination is not encrypted. + Generally, *plain* destinations can be used for broadcast information intended to be public. + Plain destinations are only reachable directly, and packets addressed to plain destinations are + never transported over multiple hops in the network. To be transportable over multiple hops in Reticulum, information + *must* be encrypted, since Reticulum uses the per-packet encryption to verify routing paths and + keep them alive. +* **Group** + The *group* special destination type, that defines a symmetrically encrypted virtual destination. + Data sent to this destination will be encrypted with a symmetric key, and will be readable by + anyone in possession of the key, but as with the *plain* destination type, packets to this type + of destination are not currently transported over multiple hops, although a planned upgrade + to Reticulum will allow globally reachable *group* destinations. +* **Link** + A *link* is a special destination type, that serves as an abstract channel to a *single* + destination, directly connected or over multiple hops. The *link* also offers reliability and + more efficient encryption, forward secrecy, initiator anonymity, and as such can be useful even + when a node is directly reachable. It also offers a more capable API and allows easily carrying + out requests and responses, large data transfers and more. + +.. _understanding-destinationnaming: + +Destination Naming +^^^^^^^^^^^^^^^^^^ + +Destinations are created and named in an easy to understand dotted notation of *aspects*, and +represented on the network as a hash of this value. The hash is a SHA-256 truncated to 128 bits. The +top level aspect should always be a unique identifier for the application using the destination. +The next levels of aspects can be defined in any way by the creator of the application. + +Aspects can be as long and as plentiful as required, and a resulting long destination name will not +impact efficiency, as names are always represented as truncated SHA-256 hashes on the network. + +As an example, a destination for a environmental monitoring application could be made up of the +application name, a device type and measurement type, like this: + +.. code-block:: text + + app name : environmentlogger + aspects : remotesensor, temperature + + full name : environmentlogger.remotesensor.temperature + hash : 4faf1b2e0a077e6a9d92fa051f256038 + +For the *single* destination, Reticulum will automatically append the associated public key as a +destination aspect before hashing. This is done to ensure only the correct destination is reached, +since anyone can listen to any destination name. Appending the public key ensures that a given +packet is only directed at the destination that holds the corresponding private key to decrypt the +packet. + +**Take note!** There is a very important concept to understand here: + +* Anyone can use the destination name ``environmentlogger.remotesensor.temperature`` + +* Each destination that does so will still have a unique destination hash, and thus be uniquely + addressable, because their public keys will differ. + +In actual use of *single* destination naming, it is advisable not to use any uniquely identifying +features in aspect naming. Aspect names should be general terms describing what kind of destination +is represented. The uniquely identifying aspect is always achieved by appending the public key, +which expands the destination into a uniquely identifiable one. Reticulum does this automatically. + +Any destination on a Reticulum network can be addressed and reached simply by knowing its +destination hash (and public key, but if the public key is not known, it can be requested from the +network simply by knowing the destination hash). The use of app names and aspects makes it easy to +structure Reticulum programs and makes it possible to filter what information and data your program +receives. + +To recap, the different destination types should be used in the following situations: + +* **Single** + When private communication between two endpoints is needed. Supports multiple hops. +* **Group** + When private communication between two or more endpoints is needed. Supports multiple hops + indirectly, but must first be established through a *single* destination. +* **Plain** + When plain-text communication is desirable, for example when broadcasting information, or for local discovery purposes. + +To communicate with a *single* destination, you need to know its public key. Any method for +obtaining the public key is valid, but Reticulum includes a simple mechanism for making other +nodes aware of your destinations public key, called the *announce*. It is also possible to request +an unknown public key from the network, as all transport instances serve as a distributed ledger +of public keys. + +Note that public key information can be shared and verified in other ways than using the +built-in *announce* functionality, and that it is therefore not required to use the *announce* and *path request* +functionality to obtain public keys. It is by far the easiest though, and should definitely be used +if there is not a very good reason for doing it differently. + +.. _understanding-keyannouncements: + +Public Key Announcements +------------------------ + +An *announce* will send a special packet over any relevant interfaces, containing all needed +information about the destination hash and public key, and can also contain some additional, +application specific data. The entire packet is signed by the sender to ensure authenticity. It is not +required to use the announce functionality, but in many cases it will be the simplest way to share +public keys on the network. The announce mechanism also serves to establish end-to-end connectivity +to the announced destination, as the announce propagates through the network. + +As an example, an announce in a simple messenger application might contain the following information: + + +* The announcers destination hash +* The announcers public key +* Application specific data, in this case the users nickname and availability status +* A random blob, making each new announce unique +* An Ed25519 signature of the above information, verifying authenticity + +With this information, any Reticulum node that receives it will be able to reconstruct an outgoing +destination to securely communicate with that destination. You might have noticed that there is one +piece of information lacking to reconstruct full knowledge of the announced destination, and that is +the aspect names of the destination. These are intentionally left out to save bandwidth, since they +will be implicit in almost all cases. The receiving application will already know them. If a destination +name is not entirely implicit, information can be included in the application specific data part that +will allow the receiver to infer the naming. + +It is important to note that announces will be forwarded throughout the network according to a +certain pattern. This will be detailed in the section +:ref:`The Announce Mechanism in Detail`. + +In Reticulum, destinations are allowed to move around the network at will. This is very different from +protocols such as IP, where an address is always expected to stay within the network segment it was assigned in. +This limitation does not exist in Reticulum, and any destination is *completely portable* over the entire topography +of the network, and *can even be moved to other Reticulum networks* than the one it was created in, and +still become reachable. To update its reachability, a destination simply needs to send an announce on any +networks it is part of. After a short while, it will be globally reachable in the network. + +Seeing how *single* destinations are always tied to a private/public key pair leads us to the next topic. + +.. _understanding-identities: + +Identities +---------- + +In Reticulum, an *identity* does not necessarily represent a personal identity, but is an abstraction that +can represent any kind of *verifiable entity*. This could very well be a person, but it could also be the +control interface of a machine, a program, robot, computer, sensor or something else entirely. In +general, any kind of agent that can act, or be acted upon, or store or manipulate information, can be +represented as an identity. An *identity* can be used to create any number of destinations. + +A *single* destination will always have an *identity* tied to it, but not *plain* or *group* +destinations. Destinations and identities share a multilateral connection. You can create a +destination, and if it is not connected to an identity upon creation, it will just create a new one to use +automatically. This may be desirable in some situations, but often you will probably want to create +the identity first, and then use it to create new destinations. + +As an example, we could use an identity to represent the user of a messaging application. +Destinations can then be created by this identity to allow communication to reach the user. +In all cases it is of great importance to store the private keys associated with any +Reticulum Identity securely and privately, since obtaining access to the identity keys equals +obtaining access and controlling reachability to any destinations created by that identity. + +.. _understanding-gettingfurther: + +Getting Further +--------------- + +The above functions and principles form the core of Reticulum, and would suffice to create +functional networked applications in local clusters, for example over radio links where all interested +nodes can directly hear each other. But to be truly useful, we need a way to direct traffic over multiple +hops in the network. + +In the following sections, two concepts that allow this will be introduced, *paths* and *links*. + +.. _understanding-transport: + +Reticulum Transport +=================== + +The methods of routing used in traditional networks are fundamentally incompatible with the physical medium +types and circumstances that Reticulum was designed to handle. These mechanisms mostly assume trust at the physical layer, +and often needs a lot more bandwidth than Reticulum can assume is available. Since Reticulum is designed to +survive running over open radio spectrum, no such trust can be assumed, and bandwidth is often very limited. + +To overcome such challenges, Reticulum’s *Transport* system uses asymmetric elliptic curve cryptography to +implement the concept of *paths* that allow discovery of how to get information closer to a certain +destination. It is important to note that no single node in a Reticulum network knows the complete +path to a destination. Every Transport node participating in a Reticulum network will only +know the most direct way to get a packet one hop closer to it's destination. + + +.. _understanding-nodetypes: + +Node Types +---------- + +Currently, Reticulum distinguishes between two types of network nodes. All nodes on a Reticulum network +are *Reticulum Instances*, and some are also *Transport Nodes*. If a system running Reticulum is fixed in +one place, and is intended to be kept available most of the time, it is a good contender to be a *Transport Node*. + +Any Reticulum Instance can become a Transport Node by enabling it in the configuration. +This distinction is made by the user configuring the node, and is used to determine what nodes on the +network will help forward traffic, and what nodes rely on other nodes for wider connectivity. + +If a node is an *Instance* it should be given the configuration directive ``enable_transport = No``, which +is the default setting. + +If it is a *Transport Node*, it should be given the configuration directive ``enable_transport = Yes``. + + +.. _understanding-announce: + +The Announce Mechanism in Detail +-------------------------------- + +When an *announce* for a destination is transmitted by a Reticulum instance, it will be forwarded by +any transport node receiving it, but according to some specific rules: + + +* | If this exact announce has already been received before, ignore it. + +* | If not, record into a table which Transport Node the announce was received from, and how many times in + total it has been retransmitted to get here. + +* | If the announce has been retransmitted *m+1* times, it will not be forwarded any more. By default, *m* is + set to 128. + +* | After a randomised delay, the announce will be retransmitted on all interfaces that have bandwidth + available for processing announces. By default, the maximum bandwidth allocation for processing + announces is set at 2%, but can be configured on a per-interface basis. + +* | If any given interface does not have enough bandwidth available for retransmitting the announce, + the announce will be assigned a priority inversely proportional to its hop count, and be inserted + into a queue managed by the interface. + +* | When the interface has bandwidth available for processing an announce, it will prioritise announces + for destinations that are closest in terms of hops, thus prioritising reachability and connectivity + of local nodes, even on slow networks that connect to wider and faster networks. + +* | After the announce has been re-transmitted, and if no other nodes are heard retransmitting the announce + with a greater hop count than when it left this node, transmitting it will be retried *r* times. By default, + *r* is set to 1. + +* | If a newer announce from the same destination arrives, while an identical one is already waiting + to be transmitted, the newest announce is discarded. If the newest announce contains different + application specific data, it will replace the old announce. + +Once an announce has reached a node in the network, any other node in direct contact with that +node will be able to reach the destination the announce originated from, simply by sending a packet +addressed to that destination. Any node with knowledge of the announce will be able to direct the +packet towards the destination by looking up the next node with the shortest amount of hops to the +destination. + +According to these rules, an announce will propagate throughout the network in a predictable way, +and make the announced destination reachable in a short amount of time. Fast networks that have the +capacity to process many announces can reach full convergence very quickly, even when constantly adding +new destinations. Slower segments of such networks might take a bit longer to gain full knowledge about +the wide and fast networks they are connected to, but can still do so over time, while prioritising full +and quickly converging end-to-end connectivity for their local, slower segments. + +In general, even extremely complex networks, that utilize the maximum 128 hops will converge to full +end-to-end connectivity in about one minute, given there is enough bandwidth available to process +the required amount of announces. + +.. _understanding-paths: + +Reaching the Destination +------------------------ + +In networks with changing topology and trustless connectivity, nodes need a way to establish +*verified connectivity* with each other. Since the network is assumed to be trustless, Reticulum +must provide a way to guarantee that the peer you are communicating with is actually who you +expect. Reticulum offers two ways to do this. + +For exchanges of small amounts of information, Reticulum offers the *Packet* API, which works exactly like you would expect - on a per packet level. The following process is employed when sending a packet: + +* | A packet is always created with an associated destination and some payload data. When the packet is sent + to a *single* destination type, Reticulum will automatically create an ephemeral encryption key, perform + an ECDH key exchange with the destination's public key, and encrypt the information. + +* | It is important to note that this key exchange does not require any network traffic. The sender already + knows the public key of the destination from an earlier received *announce*, and can thus perform the ECDH + key exchange locally, before sending the packet. + +* | The public part of the newly generated ephemeral key-pair is included with the encrypted token, and sent + along with the encrypted payload data in the packet. + +* | When the destination receives the packet, it can itself perform an ECDH key exchange and decrypt the + packet. + +* | A new ephemeral key is used for every packet sent in this way. + +* | Once the packet has been received and decrypted by the addressed destination, that destination can opt + to *prove* its receipt of the packet. It does this by calculating the SHA-256 hash of the received packet, + and signing this hash with its Ed25519 signing key. Transport nodes in the network can then direct this + *proof* back to the packets origin, where the signature can be verified against the destination's known + public signing key. + +* | In case the packet is addressed to a *group* destination type, the packet will be encrypted with the + pre-shared AES-128 key associated with the destination. In case the packet is addressed to a *plain* + destination type, the payload data will not be encrypted. Neither of these two destination types can offer + forward secrecy. In general, it is recommended to always use the *single* destination type, unless it is + strictly necessary to use one of the others. + + +For exchanges of larger amounts of data, or when longer sessions of bidirectional communication is desired, Reticulum offers the *Link* API. To establish a *link*, the following process is employed: + +* | First, the node that wishes to establish a link will send out a special packet, that + traverses the network and locates the desired destination. Along the way, the Transport Nodes that + forward the packet will take note of this *link request*. + +* | Second, if the destination accepts the *link request* , it will send back a packet that proves the + authenticity of its identity (and the receipt of the link request) to the initiating node. All + nodes that initially forwarded the packet will also be able to verify this proof, and thus + accept the validity of the *link* throughout the network. + +* | When the validity of the *link* has been accepted by forwarding nodes, these nodes will + remember the *link* , and it can subsequently be used by referring to a hash representing it. + +* | As a part of the *link request*, an Elliptic Curve Diffie-Hellman key exchange takes place, that sets up an + efficiently encrypted tunnel between the two nodes. As such, this mode of communication is preferred, + even for situations when nodes can directly communicate, when the amount of data to be exchanged numbers + in the tens of packets, or whenever the use of the more advanced API functions is desired. + +* | When a *link* has been set up, it automatically provides message receipt functionality, through + the same *proof* mechanism discussed before, so the sending node can obtain verified confirmation + that the information reached the intended recipient. + +* | Once the *link* has been set up, the initiator can remain anonymous, or choose to authenticate towards + the destination using a Reticulum Identity. This authentication is happening inside the encrypted + link, and is only revealed to the verified destination, and no intermediaries. + +In a moment, we will discuss the details of how this methodology is +implemented, but let’s first recap what purposes this methodology serves. We +first ensure that the node answering our request is actually the one we want to +communicate with, and not a malicious actor pretending to be so. At the same +time we establish an efficient encrypted channel. The setup of this is +relatively cheap in terms of bandwidth, so it can be used just for a short +exchange, and then recreated as needed, which will also rotate encryption keys. +The link can also be kept alive for longer periods of time, if this is more +suitable to the application. The procedure also inserts the *link id* , a hash +calculated from the link request packet, into the memory of forwarding nodes, +which means that the communicating nodes can thereafter reach each other simply +by referring to this *link id*. + +The combined bandwidth cost of setting up a link is 3 packets totalling 297 bytes (more info in the +:ref:`Binary Packet Format` section). The amount of bandwidth used on keeping +a link open is practically negligible, at 0.45 bits per second. Even on a slow 1200 bits per second packet +radio channel, 100 concurrent links will still leave 96% channel capacity for actual data. + + +Link Establishment in Detail +^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +After exploring the basics of the announce mechanism, finding a path through the network, and an overview +of the link establishment procedure, this section will go into greater detail about the Reticulum link +establishment process. + +The *link* in Reticulum terminology should not be viewed as a direct node-to-node link on the +physical layer, but as an abstract channel, that can be open for any amount of time, and can span +an arbitrary number of hops, where information will be exchanged between two nodes. + + +* | When a node in the network wants to establish verified connectivity with another node, it + will randomly generate a new X25519 private/public key pair. It then creates a *link request* + packet, and broadcast it. + | + | *It should be noted that the X25519 public/private keypair mentioned above is two separate keypairs: + An encryption key pair, used for derivation of a shared symmetric key, and a signing key pair, used + for signing and verifying messages on the link. They are sent together over the wire, and can be + considered as single public key for simplicity in this explanation.* + +* | The *link request* is addressed to the destination hash of the desired destination, and + contains the following data: The newly generated X25519 public key *LKi*. + +* | The broadcasted packet will be directed through the network according to the rules laid out + previously. + +* | Any node that forwards the link request will store a *link id* in it’s *link table* , along with the + amount of hops the packet had taken when received. The link id is a hash of the entire link + request packet. If the link request packet is not *proven* by the addressed destination within some + set amount of time, the entry will be dropped from the *link table* again. + +* | When the destination receives the link request packet, it will decide whether to accept the request. + If it is accepted, the destination will also generate a new X25519 private/public key pair, and + perform a Diffie Hellman Key Exchange, deriving a new symmetric key that will be used to encrypt the + channel, once it has been established. + +* | A *link proof* packet is now constructed and transmitted over the network. This packet is + addressed to the *link id* of the *link*. It contains the following data: The newly generated X25519 + public key *LKr* and an Ed25519 signature of the *link id* and *LKr* made by the *original signing key* of + the addressed destination. + +* | By verifying this *link proof* packet, all nodes that originally transported the *link request* + packet to the destination from the originator can now verify that the intended destination received + the request and accepted it, and that the path they chose for forwarding the request was valid. + In successfully carrying out this verification, the transporting nodes marks the link as active. + An abstract bi-directional communication channel has now been established along a path in the network. + Packets can now be exchanged bi-directionally from either end of the link simply by adressing the + packets to the *link id* of the link. + +* | When the source receives the *proof* , it will know unequivocally that a verified path has been + established to the destination. It can now also use the X25519 public key contained in the + *link proof* to perform it's own Diffie Hellman Key Exchange and derive the symmetric key + that is used to encrypt the channel. Information can now be exchanged reliably and securely. + + +It’s important to note that this methodology ensures that the source of the request does not need to +reveal any identifying information about itself. The link initiator remains completely anonymous. + +When using *links*, Reticulum will automatically verify all data sent over the link, and can also +automate retransmissions if *Resources* are used. + +.. _understanding-resources: + +Resources +--------- + +For exchanging small amounts of data over a Reticulum network, the :ref:`Packet` interface +is sufficient, but for exchanging data that would require many packets, an efficient way to coordinate +the transfer is needed. + +This is the purpose of the Reticulum :ref:`Resource`. A *Resource* can automatically +handle the reliable transfer of an arbitrary amount of data over an established :ref:`Link`. +Resources can auto-compress data, will handle breaking the data into individual packets, sequencing +the transfer, integrity verification and reassembling the data on the other end. + +:ref:`Resources` are programmatically very simple to use, and only requires a few lines +of codes to reliably transfer any amount of data. They can be used to transfer data stored in memory, +or stream data directly from files. + +.. _understanding-referencesystem: + +Reference Setup +====================== + +This section will detail a recommended *Reference Setup* for Reticulum. It is important to +note that Reticulum is designed to be usable on more or less any computing device, and over more +or less any medium that allows you to send and receive data, which satisfies some very low +minimum requirements. + +The communication channel must support at least half-duplex operation, and provide an average +throughput of around 500 bits per second, and supports a physical layer MTU of 500 bytes. The +Reticulum stack should be able to run on more or less any hardware that can provide a Python 3.x +runtime environment. + +That being said, this reference setup has been outlined to provide a common platform for anyone +who wants to help in the development of Reticulum, and for everyone who wants to know a +recommended setup to get started experimenting. A reference system consists of three parts: + +* **An Interface Device** + Which provides access to the physical medium whereupon the communication + takes place, for example a radio with an integrated modem. A setup with a separate modem + connected to a radio would also be an interface device. +* **A Host Device** + Some sort of computing device that can run the necessary software, communicate with the + interface device, and provide user interaction. +* **A Software Stack** + The software implementing the Reticulum protocol and applications using it. + +The reference setup can be considered a relatively stable platform to develop on, and also to start +building networks or applications on. While details of the implementation might change at the current stage of +development, it is the goal to maintain hardware compatibility for as long as entirely possible, and +the current reference setup has been determined to provide a functional platform for many years +into the future. The current Reference System Setup is as follows: + + +* **Interface Device** + A data radio consisting of a LoRa radio module, and a microcontroller with open source + firmware, that can connect to host devices via USB. It operates in either the 430, 868 or 900 + MHz frequency bands. More details can be found on the `RNode Page `_. +* **Host Device** + Any computer device running Linux and Python. A Raspberry Pi with a Debian based OS is + recommended. +* **Software Stack** + The most recently released Python Implementation of Reticulum, running on a Debian based + operating system. + +To avoid confusion, it is very important to note, that the reference interface device **does not** +use the LoRaWAN standard, but uses a custom MAC layer on top of the plain LoRa modulation! As such, you will +need a plain LoRa radio module connected to an controller with the correct firmware. Full details on how to +get or make such a device is available on the `RNode Page `_. + +With the current reference setup, it should be possible to get on a Reticulum network for around 100$ +even if you have none of the hardware already, and need to purchase everything. + +This reference setup is of course just a recommendation for getting started easily, and you should +tailor it to your own specific needs, or whatever hardware you have available. + +.. _understanding-protocolspecifics: + +Protocol Specifics +================== + +This chapter will detail protocol specific information that is essential to the implementation of +Reticulum, but non critical in understanding how the protocol works on a general level. It should be +treated more as a reference than as essential reading. + + +Packet Prioritisation +--------------------- + +Currently, Reticulum is completely priority-agnostic regarding general traffic. All traffic is handled +on a first-come, first-serve basis. Announce re-transmission are handled according to the re-transmission +times and priorities described earlier in this chapter. + + +Interface Access Codes +---------------------- + +Reticulum can create named virtual networks, and networks that are only accessible by knowing a preshared +passphrase. The configuration of this is detailed in the :ref:`Common Interface Options` +section. To implement these feature, Reticulum uses the concept of Interface Access Codes, that are calculated +and verified per packet. + +An interface with a named virtual network or passphrase authentication enabled will derive a shared Ed25519 +signing identity, and for every outbound packet generate a signature of the entire packet. This signature is +then inserted into the packet as an Interface Access Code before transmission. Depending on the speed and +capabilities of the interface, the IFAC can be the full 512-bit Ed25519 signature, or a truncated version. +Configured IFAC length can be inspected for all interfaces with the ``rnstatus`` utility. + +Upon receipt, the interface will check that the signature matches the expected value, and drop the packet if it +does not. This ensures that only packets sent with the correct naming and/or passphrase parameters are allowed to +pass onto the network. + + +.. _understanding-packetformat: + +Wire Format +----------- + +.. code-block:: text + + == Reticulum Wire Format ====== + + A Reticulum packet is composed of the following fields: + + [HEADER 2 bytes] [ADDRESSES 16/32 bytes] [CONTEXT 1 byte] [DATA 0-465 bytes] + + * The HEADER field is 2 bytes long. + * Byte 1: [IFAC Flag], [Header Type], [Propagation Type], [Destination Type] and [Packet Type] + * Byte 2: Number of hops + + * Interface Access Code field if the IFAC flag was set. + * The length of the Interface Access Code can vary from + 1 to 64 bytes according to physical interface + capabilities and configuration. + + * The ADDRESSES field contains either 1 or 2 addresses. + * Each address is 16 bytes long. + * The Header Type flag in the HEADER field determines + whether the ADDRESSES field contains 1 or 2 addresses. + * Addresses are SHA-256 hashes truncated to 16 bytes. + + * The CONTEXT field is 1 byte. + * It is used by Reticulum to determine packet context. + + * The DATA field is between 0 and 465 bytes. + * It contains the packets data payload. + + IFAC Flag + ----------------- + open 0 Packet for publically accessible interface + authenticated 1 Interface authentication is included in packet + + + Header Types + ----------------- + type 1 0 Two byte header, one 16 byte address field + type 2 1 Two byte header, two 16 byte address fields + + + Propagation Types + ----------------- + broadcast 00 + transport 01 + reserved 10 + reserved 11 + + + Destination Types + ----------------- + single 00 + group 01 + plain 10 + link 11 + + + Packet Types + ----------------- + data 00 + announce 01 + link request 10 + proof 11 + + + +- Packet Example -+ + + HEADER FIELD DESTINATION FIELDS CONTEXT FIELD DATA FIELD + _______|_______ ________________|________________ ________|______ __|_ + | | | | | | | | + 01010000 00000100 [HASH1, 16 bytes] [HASH2, 16 bytes] [CONTEXT, 1 byte] [DATA] + || | | | | + || | | | +-- Hops = 4 + || | | +------- Packet Type = DATA + || | +--------- Destination Type = SINGLE + || +----------- Propagation Type = TRANSPORT + |+------------- Header Type = HEADER_2 (two byte header, two address fields) + +-------------- Access Codes = DISABLED + + + +- Packet Example -+ + + HEADER FIELD DESTINATION FIELD CONTEXT FIELD DATA FIELD + _______|_______ _______|_______ ________|______ __|_ + | | | | | | | | + 00000000 00000111 [HASH1, 16 bytes] [CONTEXT, 1 byte] [DATA] + || | | | | + || | | | +-- Hops = 7 + || | | +------- Packet Type = DATA + || | +--------- Destination Type = SINGLE + || +----------- Propagation Type = BROADCAST + |+------------- Header Type = HEADER_1 (two byte header, one address field) + +-------------- Access Codes = DISABLED + + + +- Packet Example -+ + + HEADER FIELD IFAC FIELD DESTINATION FIELD CONTEXT FIELD DATA FIELD + _______|_______ ______|______ _______|_______ ________|______ __|_ + | | | | | | | | | | + 10000000 00000111 [IFAC, N bytes] [HASH1, 16 bytes] [CONTEXT, 1 byte] [DATA] + || | | | | + || | | | +-- Hops = 7 + || | | +------- Packet Type = DATA + || | +--------- Destination Type = SINGLE + || +----------- Propagation Type = BROADCAST + |+------------- Header Type = HEADER_1 (two byte header, one address field) + +-------------- Access Codes = ENABLED + + + Size examples of different packet types + --------------------------------------- + + The following table lists example sizes of various + packet types. The size listed are the complete on- + wire size counting all fields including headers, + but excluding any interface access codes. + + - Path Request : 51 bytes + - Announce : 167 bytes + - Link Request : 83 bytes + - Link Proof : 115 bytes + - Link RTT packet : 99 bytes + - Link keepalive : 20 bytes + + +.. _understanding-announcepropagation: + +Announce Propagation Rules +-------------------------- + +The following table illustrates the rules for automatically propagating announces +from one interface type to another, for all possible combinations. For the purpose +of announce propagation, the *Full* and *Gateway* modes are identical. + +.. image:: graphics/if_mode_graph_b.png + +See the :ref:`Interface Modes` section for a conceptual overview +of the different interface modes, and how they are configured. + +.. + (.. code-block:: text) + Full ────── ✓ ──┐ ┌── ✓ ── Full + AP ──────── ✓ ──┼───> Full >───┼── ✕ ── AP + Boundary ── ✓ ──┤ ├── ✓ ── Boundary + Roaming ─── ✓ ──┘ └── ✓ ── Roaming + + Full ────── ✕ ──┐ ┌── ✓ ── Full + AP ──────── ✕ ──┼────> AP >────┼── ✕ ── AP + Boundary ── ✕ ──┤ ├── ✓ ── Boundary + Roaming ─── ✕ ──┘ └── ✓ ── Roaming + + Full ────── ✓ ──┐ ┌── ✓ ── Full + AP ──────── ✓ ──┼─> Roaming >──┼── ✕ ── AP + Boundary ── ✕ ──┤ ├── ✕ ── Boundary + Roaming ─── ✕ ──┘ └── ✕ ── Roaming + + Full ────── ✓ ──┐ ┌── ✓ ── Full + AP ──────── ✓ ──┼─> Boundary >─┼── ✕ ── AP + Boundary ── ✓ ──┤ ├── ✓ ── Boundary + Roaming ─── ✕ ──┘ └── ✕ ── Roaming + + +.. _understanding-primitives: + +Cryptographic Primitives +------------------------ + +Reticulum has been designed to use a simple suite of efficient, strong and modern +cryptographic primitives, with widely available implementations that can be used +both on general-purpose CPUs and on microcontrollers. The necessary primitives are: + +* Ed25519 for signatures + +* X25519 for ECDH key exchanges + +* HKDF for key derivation + +* Fernet for encrypted tokens + + * AES-128 in CBC mode + + * HMAC for message authentication + +* SHA-256 + +* SHA-512 + +In the default installation configuration, the ``X25519``, ``Ed25519`` and ``AES-128-CBC`` +primitives are provided by `OpenSSL `_ (via the `PyCA/cryptography `_ +package). The hashing functions ``SHA-256`` and ``SHA-512`` are provided by the standard +Python `hashlib `_. The ``HKDF``, ``HMAC``, +``Fernet`` primitives, and the ``PKCS7`` padding function are always provided by the +following internal implementations: + +- ``RNS/Cryptography/HKDF.py`` +- ``RNS/Cryptography/HMAC.py`` +- ``RNS/Cryptography/Fernet.py`` +- ``RNS/Cryptography/PKCS7.py`` + + +Reticulum also includes a complete implementation of all necessary primitives in pure Python. +If OpenSSL & PyCA are not available on the system when Reticulum is started, Reticulum will +instead use the internal pure-python primitives. A trivial consequence of this is performance, +with the OpenSSL backend being *much* faster. The most important consequence however, is the +potential loss of security by using primitives that has not seen the same amount of scrutiny, +testing and review as those from OpenSSL. + +If you want to use the internal pure-python primitives, it is **highly advisable** that you +have a good understanding of the risks that this pose, and make an informed decision on whether +those risks are acceptable to you. diff --git a/build/manual/_sources/using.rst.txt b/build/manual/_sources/using.rst.txt new file mode 100644 index 0000000..d80e811 --- /dev/null +++ b/build/manual/_sources/using.rst.txt @@ -0,0 +1,568 @@ +.. _using-main: + +****************************** +Using Reticulum on Your System +****************************** + +Reticulum is not installed as a driver or kernel module, as one might expect +of a networking stack. Instead, Reticulum is distributed as a Python module, +containing the networking core, and a set of utility and daemon programs. + +This means that no special privileges are required to install or use it. It +is also very light-weight, and easy to transfer to, and install on new systems. + +When you have Reticulum installed, any program or application that uses Reticulum +will automatically load and initialise Reticulum when it starts, if it is not +already running. + +In many cases, this approach is sufficient. When any program needs to use +Reticulum, it is loaded, initialised, interfaces are brought up, and the +program can now communicate over any Reticulum networks available. If another +program starts up and also wants access to the same Reticulum network, the already +running instance is simply shared. This works for any number of programs running +concurrently, and is very easy to use, but depending on your use case, there +are other options. + +Configuration & Data +-------------------- + +Reticulum stores all information that it needs to function in a single file-system +directory. When Reticulum is started, it will look for a valid configuration +directory in the following places: + +- ``/etc/reticulum`` +- ``~/.config/reticulum`` +- ``~/.reticulum`` + +If no existing configuration directory is found, the directory ``~/.reticulum`` +is created, and the default configuration will be automatically created here. +You can move it to one of the other locations if you wish. + +It is also possible to use completely arbitrary configuration directories by +specifying the relevant command-line parameters when running Reticulum-based +programs. You can also run multiple separate Reticulum instances on the same +physical system, either in isolation from each other, or connected together. + +In most cases, a single physical system will only need to run one Reticulum +instance. This can either be launched at boot, as a system service, or simply +be brought up when a program needs it. In either case, any number of programs +running on the same system will automatically share the same Reticulum instance, +if the configuration allows for it, which it does by default. + +The entire configuration of Reticulum is found in the ``~/.reticulum/config`` +file. When Reticulum is first started on a new system, a basic, but fully functional +configuration file is created. The default configuration looks like this: + +.. code:: + + # This is the default Reticulum config file. + # You should probably edit it to include any additional, + # interfaces and settings you might need. + + # Only the most basic options are included in this default + # configuration. To see a more verbose, and much longer, + # configuration example, you can run the command: + # rnsd --exampleconfig + + + [reticulum] + + # If you enable Transport, your system will route traffic + # for other peers, pass announces and serve path requests. + # This should only be done for systems that are suited to + # act as transport nodes, ie. if they are stationary and + # always-on. This directive is optional and can be removed + # for brevity. + + enable_transport = False + + + # By default, the first program to launch the Reticulum + # Network Stack will create a shared instance, that other + # programs can communicate with. Only the shared instance + # opens all the configured interfaces directly, and other + # local programs communicate with the shared instance over + # a local socket. This is completely transparent to the + # user, and should generally be turned on. This directive + # is optional and can be removed for brevity. + + share_instance = Yes + + + # If you want to run multiple *different* shared instances + # on the same system, you will need to specify different + # shared instance ports for each. The defaults are given + # below, and again, these options can be left out if you + # don't need them. + + shared_instance_port = 37428 + instance_control_port = 37429 + + + # You can configure Reticulum to panic and forcibly close + # if an unrecoverable interface error occurs, such as the + # hardware device for an interface disappearing. This is + # an optional directive, and can be left out for brevity. + # This behaviour is disabled by default. + + panic_on_interface_error = No + + + [logging] + # Valid log levels are 0 through 7: + # 0: Log only critical information + # 1: Log errors and lower log levels + # 2: Log warnings and lower log levels + # 3: Log notices and lower log levels + # 4: Log info and lower (this is the default) + # 5: Verbose logging + # 6: Debug logging + # 7: Extreme logging + + loglevel = 4 + + + # The interfaces section defines the physical and virtual + # interfaces Reticulum will use to communicate on. This + # section will contain examples for a variety of interface + # types. You can modify these or use them as a basis for + # your own config, or simply remove the unused ones. + + [interfaces] + + # This interface enables communication with other + # link-local Reticulum nodes over UDP. It does not + # need any functional IP infrastructure like routers + # or DHCP servers, but will require that at least link- + # local IPv6 is enabled in your operating system, which + # should be enabled by default in almost any OS. See + # the Reticulum Manual for more configuration options. + + [[Default Interface]] + type = AutoInterface + interface_enabled = True + +If Reticulum infrastructure already exists locally, you probably don't need to +change anything, and you may already be connected to a wider network. If not, +you will probably need to add relevant *interfaces* to the configuration, in +order to communicate with other systems. It is a good idea to read the comments +and explanations in the above default config. It will teach you the basic +concepts you need to understand to configure your network. Once you have done that, +take a look at the :ref:`Interfaces` chapter of this manual. + +Included Utility Programs +------------------------- + +Reticulum includes a range of useful utilities, both for managing your Reticulum +networks, and for carrying out common tasks over Reticulum networks, such as +transferring files to remote systems, and executing commands and programs remotely. + +If you often use Reticulum from several different programs, or simply want +Reticulum to stay available all the time, for example if you are hosting +a transport node, you might want to run Reticulum as a separate service that +other programs, applications and services can utilise. + +The rnsd Utility +================ + +It is very easy to run Reticulum as a service. Simply run the included ``rnsd`` command. +When ``rnsd`` is running, it will keep all configured interfaces open, handle transport if +it is enabled, and allow any other programs to immediately utilise the +Reticulum network it is configured for. + +You can even run multiple instances of rnsd with different configurations on +the same system. + +.. code:: text + + # Install Reticulum + pip3 install rns + + # Run rnsd + rnsd + +.. code:: text + + usage: rnsd [-h] [--config CONFIG] [-v] [-q] [--version] + + Reticulum Network Stack Daemon + + optional arguments: + -h, --help show this help message and exit + --config CONFIG path to alternative Reticulum config directory + -v, --verbose + -q, --quiet + --version show program's version number and exit + +You can easily add ``rnsd`` as an always-on service by :ref:`configuring a service`. + +The rnstatus Utility +==================== + +Using the ``rnstatus`` utility, you can view the status of configured Reticulum +interfaces, similar to the ``ifconfig`` program. + +.. code:: text + + # Run rnstatus + rnstatus + + # Example output + Shared Instance[37428] + Status : Up + Serving : 1 program + Rate : 1.00 Gbps + Traffic : 83.13 KB↑ + 86.10 KB↓ + + AutoInterface[Local] + Status : Up + Mode : Full + Rate : 10.00 Mbps + Peers : 1 reachable + Traffic : 63.23 KB↑ + 80.17 KB↓ + + TCPInterface[RNS Testnet Dublin/dublin.connect.reticulum.network:4965] + Status : Up + Mode : Full + Rate : 10.00 Mbps + Traffic : 187.27 KB↑ + 74.17 KB↓ + + RNodeInterface[RNode UHF] + Status : Up + Mode : Access Point + Rate : 1.30 kbps + Access : 64-bit IFAC by <…e702c42ba8> + Traffic : 8.49 KB↑ + 9.23 KB↓ + + Reticulum Transport Instance <5245a8efe1788c6a1cd36144a270e13b> running + +.. code:: text + + usage: rnstatus [-h] [--config CONFIG] [--version] [-a] [-v] + + Reticulum Network Stack Status + + optional arguments: + -h, --help show this help message and exit + --config CONFIG path to alternative Reticulum config directory + --version show program's version number and exit + -a, --all show all interfaces + -v, --verbose + + +The rnpath Utility +==================== + +With the ``rnpath`` utility, you can look up and view paths for +destinations on the Reticulum network. + +.. code:: text + + # Run rnpath + rnpath c89b4da064bf66d280f0e4d8abfd9806 + + # Example output + Path found, destination is 4 hops away via on TCPInterface[Testnet/dublin.connect.reticulum.network:4965] + +.. code:: text + + usage: rnpath [-h] [--config CONFIG] [--version] [-t] [-r] [-d] [-D] [-w seconds] [-v] [destination] + + Reticulum Path Discovery Utility + + positional arguments: + destination hexadecimal hash of the destination + + optional arguments: + -h, --help show this help message and exit + --config CONFIG path to alternative Reticulum config directory + --version show program's version number and exit + -t, --table show all known paths + -r, --rates show announce rate info + -d, --drop remove the path to a destination + -D, --drop-announces drop all queued announces + -w seconds timeout before giving up + -v, --verbose + + +The rnprobe Utility +==================== + +The ``rnprobe`` utility lets you probe a destination for connectivity, similar +to the ``ping`` program. Please note that probes will only be answered if the +specified destination is configured to send proofs for received packets. Many +destinations will not have this option enabled, and will not be probable. + +.. code:: text + + # Run rnprobe + rnprobe example_utilities.echo.request 2d03725b327348980d570f739a3a5708 + + # Example output + Sent 16 byte probe to <2d03725b327348980d570f739a3a5708> + Valid reply received from <2d03725b327348980d570f739a3a5708> + Round-trip time is 38.469 milliseconds over 2 hops + +.. code:: text + + usage: rnprobe [-h] [--config CONFIG] [--version] [-v] [full_name] [destination_hash] + + Reticulum Probe Utility + + positional arguments: + full_name full destination name in dotted notation + destination_hash hexadecimal hash of the destination + + optional arguments: + -h, --help show this help message and exit + --config CONFIG path to alternative Reticulum config directory + --version show program's version number and exit + -v, --verbose + + +The rncp Utility +================ + +The ``rncp`` utility is a simple file transfer tool. Using it, you can transfer +files through Reticulum. + +.. code:: text + + # Run rncp on the receiving system, specifying which identities + # are allowed to send files + rncp --receive -a 1726dbad538775b5bf9b0ea25a4079c8 -a c50cc4e4f7838b6c31f60ab9032cbc62 + + # From another system, copy a file to the receiving system + rncp ~/path/to/file.tgz 73cbd378bb0286ed11a707c13447bb1e + +You can specify as many allowed senders as needed, or complete disable authentication. + +.. code:: text + + usage: rncp [-h] [--config path] [-v] [-q] [-p] [-r] [-b] [-a allowed_hash] [-n] [-w seconds] [--version] [file] [destination] + + Reticulum File Transfer Utility + + positional arguments: + file file to be transferred + destination hexadecimal hash of the receiver + + optional arguments: + -h, --help show this help message and exit + --config path path to alternative Reticulum config directory + -v, --verbose increase verbosity + -q, --quiet decrease verbosity + -p, --print-identity print identity and destination info and exit + -r, --receive wait for incoming files + -b, --no-announce don't announce at program start + -a allowed_hash accept from this identity + -n, --no-auth accept files from anyone + -w seconds sender timeout before giving up + --version show program's version number and exit + -v, --verbose + + +The rnx Utility +================ + +The ``rnx`` utility is a basic remote command execution program. It allows you to +execute commands on remote systems over Reticulum, and to view returned command +output. + +.. code:: text + + # Run rnx on the listening system, specifying which identities + # are allowed to execute commands + rnx --listen -a 941bed5e228775e5a8079fc38b1ccf3f -a 1b03013c25f1c2ca068a4f080b844a10 + + # From another system, run a command + rnx 7a55144adf826958a9529a3bcf08b149 "cat /proc/cpuinfo" + + # Or enter the interactive mode pseudo-shell + rnx 7a55144adf826958a9529a3bcf08b149 -x + + # The default identity file is stored in + # ~/.reticulum/identities/rnx, but you can use + # another one, which will be created if it does + # not already exist + rnx 7a55144adf826958a9529a3bcf08b149 -i /path/to/identity -x + +You can specify as many allowed senders as needed, or completely disable authentication. + +.. code:: text + + usage: rnx [-h] [--config path] [-v] [-q] [-p] [-l] [-i identity] [-x] [-b] [-a allowed_hash] [-n] [-N] [-d] [-m] [-w seconds] [-W seconds] [--stdin STDIN] [--stdout STDOUT] [--stderr STDERR] [--version] + [destination] [command] + + Reticulum Remote Execution Utility + + positional arguments: + destination hexadecimal hash of the listener + command command to be execute + + optional arguments: + -h, --help show this help message and exit + --config path path to alternative Reticulum config directory + -v, --verbose increase verbosity + -q, --quiet decrease verbosity + -p, --print-identity print identity and destination info and exit + -l, --listen listen for incoming commands + -i identity path to identity to use + -x, --interactive enter interactive mode + -b, --no-announce don't announce at program start + -a allowed_hash accept from this identity + -n, --noauth accept files from anyone + -N, --noid don't identify to listener + -d, --detailed show detailed result output + -m mirror exit code of remote command + -w seconds connect and request timeout before giving up + -W seconds max result download time + --stdin STDIN pass input to stdin + --stdout STDOUT max size in bytes of returned stdout + --stderr STDERR max size in bytes of returned stderr + --version show program's version number and exit + + +The rnodeconf Utility +===================== + +The ``rnodeconf`` utility allows you to inspect and configure existing :ref:`RNodes`, and +to create and provision new :ref:`RNodes` from any supported hardware devices. + +.. code:: text + + usage: rnodeconf [-h] [-i] [-a] [-u] [-U] [--fw-version version] [--nocheck] [-C] [-N] [-T] [-b] [-B] [-p] [--freq Hz] [--bw Hz] [--txp dBm] [--sf factor] [--cr rate] [--eeprom-backup] [--eeprom-dump] [--eeprom-wipe] [--version] [port] + + RNode Configuration and firmware utility. This program allows you to change various settings and startup modes of RNode. It can also install, flash and update the firmware on supported devices. + + positional arguments: + port serial port where RNode is attached + + options: + -h, --help show this help message and exit + -i, --info Show device info + -a, --autoinstall Automatic installation on various supported devices + -u, --update Update firmware to the latest version + -U, --force-update Update to specified firmware even if version matches or is older than installed version + --fw-version version Use a specific firmware version for update or autoinstall + --nocheck Don't check for firmware updates online + -e, --extract Extract firmware from connected RNode for later use + -E, --use-extracted Use the extracted firmware for autoinstallation or update + -C, --clear-cache Clear locally cached firmware files + -N, --normal Switch device to normal mode + -T, --tnc Switch device to TNC mode + -b, --bluetooth-on Turn device bluetooth on + -B, --bluetooth-off Turn device bluetooth off + -p, --bluetooth-pair Put device into bluetooth pairing mode + --freq Hz Frequency in Hz for TNC mode + --bw Hz Bandwidth in Hz for TNC mode + --txp dBm TX power in dBm for TNC mode + --sf factor Spreading factor for TNC mode (7 - 12) + --cr rate Coding rate for TNC mode (5 - 8) + --eeprom-backup Backup EEPROM to file + --eeprom-dump Dump EEPROM to console + --eeprom-wipe Unlock and wipe EEPROM + --version Print program version and exit + +For more information on how to create your own RNodes, please read the :ref:`Creating RNodes` +section of this manual. + +Improving System Configuration +------------------------------ + +If you are setting up a system for permanent use with Reticulum, there is a +few system configuration changes that can make this easier to administrate. +These changes will be detailed here. + + +Fixed Serial Port Names +======================= + +On a Reticulum instance with several serial port based interfaces, it can be +beneficial to use the fixed device names for the serial ports, instead +of the dynamically allocated shorthands such as ``/dev/ttyUSB0``. Under most +Debian-based distributions, including Ubuntu and Raspberry Pi OS, these nodes +can be found under ``/dev/serial/by-id``. + +You can use such a device path directly in place of the numbered shorthands. +Here is an example of a packet radio TNC configured as such: + +.. code:: text + + [[Packet Radio KISS Interface]] + type = KISSInterface + interface_enabled = True + outgoing = true + port = /dev/serial/by-id/usb-FTDI_FT230X_Basic_UART_43891CKM-if00-port0 + speed = 115200 + databits = 8 + parity = none + stopbits = 1 + preamble = 150 + txtail = 10 + persistence = 200 + slottime = 20 + +Using this methodology avoids potential naming mix-ups where physical devices +might be plugged and unplugged in different orders, or when device name +assignment varies from one boot to another. + +.. _using-systemd: + +Reticulum as a System Service +============================= + +Instead of starting Reticulum manually, you can install ``rnsd`` as a system +service and have it start automatically at boot. + +If you installed Reticulum with ``pip``, the ``rnsd`` program will most likely +be located in a user-local installation path only, which means ``systemd`` will not +be able to execute it. In this case, you can simply symlink the ``rnsd`` program +into a directory that is in systemd's path: + +.. code:: text + + sudo ln -s $(which rnsd) /usr/local/bin/ + +You can then create the service file ``/etc/systemd/system/rnsd.service`` with the +following content: + +.. code:: text + + [Unit] + Description=Reticulum Network Stack Daemon + After=multi-user.target + + [Service] + # If you run Reticulum on WiFi devices, + # or other devices that need some extra + # time to initialise, you might want to + # add a short delay before Reticulum is + # started by systemd: + # ExecStartPre=/bin/sleep 10 + Type=simple + Restart=always + RestartSec=3 + User=USERNAMEHERE + ExecStart=rnsd --service + + [Install] + WantedBy=multi-user.target + +Be sure to replace ``USERNAMEHERE`` with the user you want to run ``rnsd`` as. + +To manually start ``rnsd`` run: + +.. code:: text + + sudo systemctl start rnsd + +If you want to automatically start ``rnsd`` at boot, run: + +.. code:: text + + sudo systemctl enable rnsd diff --git a/build/manual/_sources/whatis.rst.txt b/build/manual/_sources/whatis.rst.txt new file mode 100644 index 0000000..45c6191 --- /dev/null +++ b/build/manual/_sources/whatis.rst.txt @@ -0,0 +1,168 @@ +****************** +What is Reticulum? +****************** + +Reticulum is a cryptography-based networking stack for building both local and +wide-area networks with readily available hardware, that can continue to operate +under adverse conditions, such as extremely low bandwidth and very high latency. + +Reticulum allows you to build wide-area networks with off-the-shelf tools, and +offers end-to-end encryption, forward secrecy, autoconfiguring cryptographically +backed multi-hop transport, efficient addressing, unforgeable packet +acknowledgements and more. + +From a users perspective, Reticulum allows the creation of applications that +respect and empower the autonomy and sovereignty of communities and individuals. +Reticulum enables secure digital communication that cannot be subjected to +outside control, manipulation or censorship. + +Reticulum enables the construction of both small and potentially planetary-scale +networks, without any need for hierarchical or beaureucratic structures to control +or manage them, while ensuring individuals and communities full sovereignty +over their own network segments. + +Reticulum is a complete networking stack, and does not need IP or higher +layers, although it is easy to utilise IP (with TCP or UDP) as the underlying +carrier for Reticulum. It is therefore trivial to tunnel Reticulum over the +Internet or private IP networks. Reticulum is built directly on cryptographic +principles, allowing resilience and stable functionality in open and trustless +networks. + +No kernel modules or drivers are required. Reticulum runs completely in +userland, and can run on practically any system that runs Python 3. Reticulum +runs well even on small single-board computers like the Pi Zero. + + +Current Status +============== +**Please know!** Reticulum should currently be considered beta software. All core protocol +features are implemented and functioning, but additions will probably occur as +real-world use is explored. *There will be bugs*. The API and wire-format can be +considered stable at the moment, but could change if absolutely warranted. + + +What does Reticulum Offer? +========================== +* Coordination-less globally unique addressing and identification + +* Fully self-configuring multi-hop routing + +* Complete initiator anonymity, communicate without revealing your identity + +* Asymmetric encryption based on X25519, and Ed25519 signatures as a basis for all communication + +* Forward Secrecy by using ephemeral Elliptic Curve Diffie-Hellman keys on Curve25519 + +* Reticulum uses the `Fernet `_ specification for on-the-wire / over-the-air encryption + + * All keys are ephemeral and derived from an ECDH key exchange on Curve25519 + + * AES-128 in CBC mode with PKCS7 padding + + * HMAC using SHA256 for authentication + + * IVs are generated through os.urandom() + +* Unforgeable packet delivery confirmations + +* A variety of supported interface types + +* An intuitive and developer-friendly API + +* Efficient link establishment + + * Total bandwidth cost of setting up a link is only 3 packets, totalling 297 bytes + + * Low cost of keeping links open at only 0.44 bits per second + +* Reliable and efficient transfer of arbitrary amounts of data + + * Reticulum can handle a few bytes of data or files of many gigabytes + + * Sequencing, transfer coordination and checksumming is automatic + + * The API is very easy to use, and provides transfer progress + +* Authentication and virtual network segmentation on all supported interface types + +* Flexible scalability allowing extremely low-bandwidth networks to co-exist and interoperate with large, high-bandwidth networks + + +Where can Reticulum be Used? +============================ +Over practically any medium that can support at least a half-duplex channel +with 500 bits per second throughput, and an MTU of 500 bytes. Data radios, +modems, LoRa radios, serial lines, AX.25 TNCs, amateur radio digital modes, +ad-hoc WiFi, free-space optical links and similar systems are all examples +of the types of interfaces Reticulum was designed for. + +An open-source LoRa-based interface called `RNode `_ +has been designed as an example transceiver that is very suitable for +Reticulum. It is possible to build it yourself, to transform a common LoRa +development board into one, or it can be purchased as a complete transceiver. + +Reticulum can also be encapsulated over existing IP networks, so there's +nothing stopping you from using it over wired Ethernet or your local WiFi +network, where it'll work just as well. In fact, one of the strengths of +Reticulum is how easily it allows you to connect different mediums into a +self-configuring, resilient and encrypted mesh. + +As an example, it's possible to set up a Raspberry Pi connected to both a +LoRa radio, a packet radio TNC and a WiFi network. Once the interfaces are +added, Reticulum will take care of the rest, and any device on the WiFi +network can communicate with nodes on the LoRa and packet radio sides of the +network, and vice versa. + +Interface Types and Devices +=========================== +Reticulum implements a range of generalised interface types that covers the communications hardware that Reticulum can run over. If your hardware is not supported, it's relatively simple to implement an interface class. Currently, Reticulum can use the following devices and communication mediums: + +* Any Ethernet device + + * WiFi devices + + * Wired Ethernet devices + + * Fibre-optic transceivers + + * Data radios with Ethernet ports + +* LoRa using `RNode `_ + + * Can be installed on `many popular LoRa boards `_ + + * Can be purchased as a `ready to use transceiver `_ + +* Packet Radio TNCs, such as `OpenModem `_ + + * Any packet radio TNC in KISS mode + + * Ideal for VHF and UHF radio + +* Any device with a serial port + +* The I2P network + +* TCP over IP networks + +* UDP over IP networks + +* Anything you can connect via stdio + + * Reticulum can use external programs and pipes as interfaces + + * This can be used to easily hack in virtual interfaces + + * Or to quickly create interfaces with custom hardware + +For a full list and more details, see the :ref:`Supported Interfaces` chapter. + + +Caveat Emptor +============== +Reticulum is an experimental networking stack, and should be considered as +such. While it has been built with cryptography best-practices very foremost in +mind, it has not yet been externally security audited, and there could very well be +privacy-breaking bugs. To be considered secure, Reticulum needs a thorough +security review by independent cryptographers and security researchers. If you +want to help out with this, or can help sponsor an audit, please do get in touch. diff --git a/build/manual/_static/_sphinx_javascript_frameworks_compat.js b/build/manual/_static/_sphinx_javascript_frameworks_compat.js new file mode 100644 index 0000000..8549469 --- /dev/null +++ b/build/manual/_static/_sphinx_javascript_frameworks_compat.js @@ -0,0 +1,134 @@ +/* + * _sphinx_javascript_frameworks_compat.js + * ~~~~~~~~~~ + * + * Compatability shim for jQuery and underscores.js. + * + * WILL BE REMOVED IN Sphinx 6.0 + * xref RemovedInSphinx60Warning + * + */ + +/** + * select a different prefix for underscore + */ +$u = _.noConflict(); + + +/** + * small helper function to urldecode strings + * + * See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/decodeURIComponent#Decoding_query_parameters_from_a_URL + */ +jQuery.urldecode = function(x) { + if (!x) { + return x + } + return decodeURIComponent(x.replace(/\+/g, ' ')); +}; + +/** + * small helper function to urlencode strings + */ +jQuery.urlencode = encodeURIComponent; + +/** + * This function returns the parsed url parameters of the + * current request. 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+ }); + } + } + var addItems = []; + var result = this.each(function() { + highlight(this, addItems); + }); + for (var i = 0; i < addItems.length; ++i) { + jQuery(addItems[i].parent).before(addItems[i].target); + } + return result; +}; + +/* + * backward compatibility for jQuery.browser + * This will be supported until firefox bug is fixed. + */ +if (!jQuery.browser) { + jQuery.uaMatch = function(ua) { + ua = ua.toLowerCase(); + + var match = /(chrome)[ \/]([\w.]+)/.exec(ua) || + /(webkit)[ \/]([\w.]+)/.exec(ua) || + /(opera)(?:.*version|)[ \/]([\w.]+)/.exec(ua) || + /(msie) ([\w.]+)/.exec(ua) || + ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec(ua) || + []; + + return { + browser: match[ 1 ] || "", + version: match[ 2 ] || "0" + }; + }; + jQuery.browser = {}; + jQuery.browser[jQuery.uaMatch(navigator.userAgent).browser] = true; +} diff --git a/build/manual/_static/basic.css b/build/manual/_static/basic.css new file mode 100644 index 0000000..4e9a9f1 --- /dev/null +++ b/build/manual/_static/basic.css @@ -0,0 +1,900 @@ +/* + * basic.css + * ~~~~~~~~~ + * + * Sphinx stylesheet -- basic theme. + * + * :copyright: Copyright 2007-2022 by the Sphinx team, see AUTHORS. + * :license: BSD, see LICENSE for details. + * + */ + +/* -- main layout ----------------------------------------------------------- */ + +div.clearer { + clear: both; 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+ overflow-x: auto; +} + +p.sidebar-title { + font-weight: bold; +} +nav.contents, +aside.topic, +div.admonition, div.topic, blockquote { + clear: left; +} + +/* -- topics ---------------------------------------------------------------- */ +nav.contents, +aside.topic, +div.topic { + border: 1px solid #ccc; + padding: 7px; + margin: 10px 0 10px 0; +} + +p.topic-title { + font-size: 1.1em; + font-weight: bold; + margin-top: 10px; +} + +/* -- admonitions ----------------------------------------------------------- */ + +div.admonition { + margin-top: 10px; + margin-bottom: 10px; + padding: 7px; +} + +div.admonition dt { + font-weight: bold; +} + +p.admonition-title { + margin: 0px 10px 5px 0px; + font-weight: bold; +} + +div.body p.centered { + text-align: center; + margin-top: 25px; +} + +/* -- content of sidebars/topics/admonitions -------------------------------- */ + +div.sidebar > :last-child, +aside.sidebar > :last-child, +nav.contents > :last-child, +aside.topic > :last-child, +div.topic > :last-child, +div.admonition > :last-child { + margin-bottom: 0; +} + +div.sidebar::after, +aside.sidebar::after, +nav.contents::after, +aside.topic::after, +div.topic::after, +div.admonition::after, +blockquote::after { + display: block; + content: ''; + clear: both; +} + +/* -- tables ---------------------------------------------------------------- */ + +table.docutils { + margin-top: 10px; + margin-bottom: 10px; + border: 0; + border-collapse: collapse; +} + +table.align-center { + margin-left: auto; + margin-right: auto; +} + +table.align-default { + margin-left: auto; + margin-right: auto; +} + +table caption span.caption-number { + font-style: italic; +} + +table caption span.caption-text { +} + +table.docutils td, table.docutils th { + padding: 1px 8px 1px 5px; + border-top: 0; + border-left: 0; + border-right: 0; + border-bottom: 1px solid #aaa; +} + +th { + text-align: left; + padding-right: 5px; +} + +table.citation { + border-left: solid 1px gray; + margin-left: 1px; +} + +table.citation td { + border-bottom: none; +} + +th > :first-child, +td > :first-child { + margin-top: 0px; +} + +th > :last-child, +td > :last-child { + margin-bottom: 0px; +} + +/* -- figures --------------------------------------------------------------- */ + +div.figure, figure { + margin: 0.5em; + padding: 0.5em; +} + +div.figure p.caption, figcaption { + padding: 0.3em; +} + +div.figure p.caption span.caption-number, +figcaption span.caption-number { + font-style: italic; +} + +div.figure p.caption span.caption-text, +figcaption span.caption-text { +} + +/* -- field list styles ----------------------------------------------------- */ + +table.field-list td, table.field-list th { + border: 0 !important; +} + +.field-list ul { + margin: 0; + padding-left: 1em; +} + +.field-list p { + margin: 0; +} + +.field-name { + -moz-hyphens: manual; + -ms-hyphens: manual; + -webkit-hyphens: manual; + hyphens: manual; +} + +/* -- hlist styles ---------------------------------------------------------- */ + +table.hlist { + margin: 1em 0; +} + +table.hlist td { + vertical-align: top; +} + +/* -- object description styles --------------------------------------------- */ + +.sig { + font-family: 'Consolas', 'Menlo', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', monospace; +} + +.sig-name, code.descname { + background-color: transparent; + font-weight: bold; +} + +.sig-name { + font-size: 1.1em; +} + +code.descname { + font-size: 1.2em; +} + +.sig-prename, code.descclassname { + background-color: transparent; +} + +.optional { + font-size: 1.3em; +} + +.sig-paren { + font-size: larger; +} + +.sig-param.n { + font-style: italic; +} + +/* C++ specific styling */ + +.sig-inline.c-texpr, +.sig-inline.cpp-texpr { + font-family: unset; +} + +.sig.c .k, .sig.c .kt, +.sig.cpp .k, .sig.cpp .kt { + color: #0033B3; +} + +.sig.c .m, +.sig.cpp .m { + color: #1750EB; +} + +.sig.c .s, .sig.c .sc, +.sig.cpp .s, .sig.cpp .sc { + color: #067D17; +} + + +/* -- other body styles ----------------------------------------------------- */ + +ol.arabic { + list-style: decimal; +} + +ol.loweralpha { + list-style: lower-alpha; +} + +ol.upperalpha { + list-style: upper-alpha; +} + +ol.lowerroman { + list-style: lower-roman; +} + +ol.upperroman { + list-style: upper-roman; +} + +:not(li) > ol > li:first-child > :first-child, +:not(li) > ul > li:first-child > :first-child { + margin-top: 0px; +} + +:not(li) > ol > li:last-child > :last-child, +:not(li) > ul > li:last-child > :last-child { + margin-bottom: 0px; +} + +ol.simple ol p, +ol.simple ul p, +ul.simple ol p, +ul.simple ul p { + margin-top: 0; +} + +ol.simple > li:not(:first-child) > p, +ul.simple > li:not(:first-child) > p { + margin-top: 0; +} + +ol.simple p, +ul.simple p { + margin-bottom: 0; +} +aside.footnote > span, +div.citation > span { + float: left; +} +aside.footnote > span:last-of-type, +div.citation > span:last-of-type { + padding-right: 0.5em; +} +aside.footnote > p { + margin-left: 2em; +} +div.citation > p { + margin-left: 4em; +} +aside.footnote > p:last-of-type, +div.citation > p:last-of-type { + margin-bottom: 0em; +} +aside.footnote > p:last-of-type:after, +div.citation > p:last-of-type:after { + content: ""; + clear: both; +} + +dl.field-list { + display: grid; + grid-template-columns: fit-content(30%) auto; +} + +dl.field-list > dt { + font-weight: bold; + word-break: break-word; + padding-left: 0.5em; + padding-right: 5px; +} + +dl.field-list > dd { + padding-left: 0.5em; + margin-top: 0em; + margin-left: 0em; + margin-bottom: 0em; +} + +dl { + margin-bottom: 15px; +} + +dd > :first-child { + margin-top: 0px; +} + +dd ul, dd table { + margin-bottom: 10px; +} + +dd { + margin-top: 3px; + margin-bottom: 10px; + margin-left: 30px; +} + +dl > dd:last-child, +dl > dd:last-child > :last-child { + margin-bottom: 0; +} + +dt:target, span.highlighted { + background-color: #fbe54e; +} + +rect.highlighted { + fill: #fbe54e; +} + +dl.glossary dt { + font-weight: bold; + font-size: 1.1em; +} + +.versionmodified { + font-style: italic; +} + +.system-message { + background-color: #fda; + padding: 5px; + border: 3px solid red; +} + +.footnote:target { + background-color: #ffa; +} + +.line-block { + display: block; + margin-top: 1em; + margin-bottom: 1em; +} + +.line-block .line-block { + margin-top: 0; + margin-bottom: 0; + margin-left: 1.5em; +} + +.guilabel, .menuselection { + font-family: sans-serif; +} + +.accelerator { + text-decoration: underline; +} + +.classifier { + font-style: oblique; +} + +.classifier:before { + font-style: normal; + margin: 0 0.5em; + content: ":"; + display: inline-block; +} + +abbr, acronym { + border-bottom: dotted 1px; + cursor: help; +} + +/* -- code displays --------------------------------------------------------- */ + +pre { + overflow: auto; + overflow-y: hidden; /* fixes display issues on Chrome browsers */ +} + +pre, div[class*="highlight-"] { + clear: both; +} + +span.pre { + -moz-hyphens: none; + -ms-hyphens: none; + -webkit-hyphens: none; + hyphens: none; + white-space: nowrap; +} + +div[class*="highlight-"] { + margin: 1em 0; +} + +td.linenos pre { + border: 0; + background-color: transparent; + color: #aaa; +} + +table.highlighttable { + display: block; +} + +table.highlighttable tbody { + display: block; +} + +table.highlighttable tr { + display: flex; +} + +table.highlighttable td { + margin: 0; + padding: 0; +} + +table.highlighttable td.linenos { + padding-right: 0.5em; +} + +table.highlighttable td.code { + flex: 1; + overflow: hidden; +} + +.highlight .hll { + display: block; +} + +div.highlight pre, +table.highlighttable pre { + margin: 0; +} + +div.code-block-caption + div { + margin-top: 0; +} + +div.code-block-caption { + margin-top: 1em; + padding: 2px 5px; + font-size: small; +} + +div.code-block-caption code { + background-color: transparent; +} + +table.highlighttable td.linenos, +span.linenos, +div.highlight span.gp { /* gp: Generic.Prompt */ + user-select: none; + -webkit-user-select: text; /* Safari fallback only */ + -webkit-user-select: none; /* Chrome/Safari */ + -moz-user-select: none; /* Firefox */ + -ms-user-select: none; /* IE10+ */ +} + +div.code-block-caption span.caption-number { + padding: 0.1em 0.3em; + font-style: italic; +} + +div.code-block-caption span.caption-text { +} + +div.literal-block-wrapper { + margin: 1em 0; +} + +code.xref, a code { + background-color: transparent; + font-weight: bold; +} + +h1 code, h2 code, h3 code, h4 code, h5 code, h6 code { + background-color: transparent; +} + +.viewcode-link { + float: right; +} + +.viewcode-back { + float: right; + font-family: sans-serif; +} + +div.viewcode-block:target { + margin: -1px -10px; + padding: 0 10px; +} + +/* -- math display ---------------------------------------------------------- */ + +img.math { + vertical-align: middle; +} + +div.body div.math p { + text-align: center; +} + +span.eqno { + float: right; +} + +span.eqno a.headerlink { + position: absolute; + z-index: 1; +} + +div.math:hover a.headerlink { + visibility: visible; +} + +/* -- printout stylesheet --------------------------------------------------- */ + +@media print { + div.document, + div.documentwrapper, + div.bodywrapper { + margin: 0 !important; + width: 100%; + } + + div.sphinxsidebar, + div.related, + div.footer, + #top-link { + display: none; + } +} \ No newline at end of file diff --git a/build/manual/_static/check-solid.svg b/build/manual/_static/check-solid.svg new file mode 100644 index 0000000..92fad4b --- /dev/null +++ b/build/manual/_static/check-solid.svg @@ -0,0 +1,4 @@ + + + + diff --git a/build/manual/_static/clipboard.min.js b/build/manual/_static/clipboard.min.js new file mode 100644 index 0000000..54b3c46 --- /dev/null +++ b/build/manual/_static/clipboard.min.js @@ -0,0 +1,7 @@ +/*! + * clipboard.js v2.0.8 + * https://clipboardjs.com/ + * + * Licensed MIT © Zeno Rocha + */ +!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.ClipboardJS=e():t.ClipboardJS=e()}(this,function(){return n={686:function(t,e,n){"use strict";n.d(e,{default:function(){return o}});var e=n(279),i=n.n(e),e=n(370),u=n.n(e),e=n(817),c=n.n(e);function a(t){try{return document.execCommand(t)}catch(t){return}}var f=function(t){t=c()(t);return a("cut"),t};var l=function(t){var e,n,o,r=1 + + + + diff --git a/build/manual/_static/copybutton.css b/build/manual/_static/copybutton.css new file mode 100644 index 0000000..f1916ec --- /dev/null +++ b/build/manual/_static/copybutton.css @@ -0,0 +1,94 @@ +/* Copy buttons */ +button.copybtn { + position: absolute; + display: flex; + top: .3em; + right: .3em; + width: 1.7em; + height: 1.7em; + opacity: 0; + transition: opacity 0.3s, border .3s, background-color .3s; + user-select: none; + padding: 0; + border: none; + outline: none; + border-radius: 0.4em; + /* The colors that GitHub uses */ + border: #1b1f2426 1px solid; + background-color: #f6f8fa; + color: #57606a; +} + +button.copybtn.success { + border-color: #22863a; + color: #22863a; +} + +button.copybtn svg { + stroke: currentColor; + width: 1.5em; + height: 1.5em; + padding: 0.1em; +} + +div.highlight { + position: relative; +} + +/* Show the copybutton */ +.highlight:hover button.copybtn, button.copybtn.success { + opacity: 1; +} + +.highlight button.copybtn:hover { + background-color: rgb(235, 235, 235); +} + +.highlight button.copybtn:active { + background-color: rgb(187, 187, 187); +} + +/** + * A minimal CSS-only tooltip copied from: + * https://codepen.io/mildrenben/pen/rVBrpK + * + * To use, write HTML like the following: + * + *

Short

+ */ + .o-tooltip--left { + position: relative; + } + + .o-tooltip--left:after { + opacity: 0; + visibility: hidden; + position: absolute; + content: attr(data-tooltip); + padding: .2em; + font-size: .8em; + left: -.2em; + background: grey; + color: white; + white-space: nowrap; + z-index: 2; + border-radius: 2px; + transform: translateX(-102%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); +} + +.o-tooltip--left:hover:after { + display: block; + opacity: 1; + visibility: visible; + transform: translateX(-100%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); + transition-delay: .5s; +} + +/* By default the copy button shouldn't show up when printing a page */ +@media print { + button.copybtn { + display: none; + } +} diff --git a/build/manual/_static/copybutton.js b/build/manual/_static/copybutton.js new file mode 100644 index 0000000..2ea7ff3 --- /dev/null +++ b/build/manual/_static/copybutton.js @@ -0,0 +1,248 @@ +// Localization support +const messages = { + 'en': { + 'copy': 'Copy', + 'copy_to_clipboard': 'Copy to clipboard', + 'copy_success': 'Copied!', + 'copy_failure': 'Failed to copy', + }, + 'es' : { + 'copy': 'Copiar', + 'copy_to_clipboard': 'Copiar al portapapeles', + 'copy_success': '¡Copiado!', + 'copy_failure': 'Error al copiar', + }, + 'de' : { + 'copy': 'Kopieren', + 'copy_to_clipboard': 'In die Zwischenablage kopieren', + 'copy_success': 'Kopiert!', + 'copy_failure': 'Fehler beim Kopieren', + }, + 'fr' : { + 'copy': 'Copier', + 'copy_to_clipboard': 'Copier dans le presse-papier', + 'copy_success': 'Copié !', + 'copy_failure': 'Échec de la copie', + }, + 'ru': { + 'copy': 'Скопировать', + 'copy_to_clipboard': 'Скопировать в буфер', + 'copy_success': 'Скопировано!', + 'copy_failure': 'Не удалось скопировать', + }, + 'zh-CN': { + 'copy': '复制', + 'copy_to_clipboard': '复制到剪贴板', + 'copy_success': '复制成功!', + 'copy_failure': '复制失败', + }, + 'it' : { + 'copy': 'Copiare', + 'copy_to_clipboard': 'Copiato negli appunti', + 'copy_success': 'Copiato!', + 'copy_failure': 'Errore durante la copia', + } +} + +let locale = 'en' +if( document.documentElement.lang !== undefined + && messages[document.documentElement.lang] !== undefined ) { + locale = document.documentElement.lang +} + +let doc_url_root = DOCUMENTATION_OPTIONS.URL_ROOT; +if (doc_url_root == '#') { + doc_url_root = ''; +} + +/** + * SVG files for our copy buttons + */ +let iconCheck = ` + ${messages[locale]['copy_success']} + + +` + +// If the user specified their own SVG use that, otherwise use the default +let iconCopy = ``; +if (!iconCopy) { + iconCopy = ` + ${messages[locale]['copy_to_clipboard']} + + + +` +} + +/** + * Set up copy/paste for code blocks + */ + +const runWhenDOMLoaded = cb => { + if (document.readyState != 'loading') { + cb() + } else if (document.addEventListener) { + document.addEventListener('DOMContentLoaded', cb) + } else { + document.attachEvent('onreadystatechange', function() { + if (document.readyState == 'complete') cb() + }) + } +} + +const codeCellId = index => `codecell${index}` + +// Clears selected text since ClipboardJS will select the text when copying +const clearSelection = () => { + if (window.getSelection) { + window.getSelection().removeAllRanges() + } else if (document.selection) { + document.selection.empty() + } +} + +// Changes tooltip text for a moment, then changes it back +// We want the timeout of our `success` class to be a bit shorter than the +// tooltip and icon change, so that we can hide the icon before changing back. +var timeoutIcon = 2000; +var timeoutSuccessClass = 1500; + +const temporarilyChangeTooltip = (el, oldText, newText) => { + el.setAttribute('data-tooltip', newText) + el.classList.add('success') + // Remove success a little bit sooner than we change the tooltip + // So that we can use CSS to hide the copybutton first + setTimeout(() => el.classList.remove('success'), timeoutSuccessClass) + setTimeout(() => el.setAttribute('data-tooltip', oldText), timeoutIcon) +} + +// Changes the copy button icon for two seconds, then changes it back +const temporarilyChangeIcon = (el) => { + el.innerHTML = iconCheck; + setTimeout(() => {el.innerHTML = iconCopy}, timeoutIcon) +} + +const addCopyButtonToCodeCells = () => { + // If ClipboardJS hasn't loaded, wait a bit and try again. This + // happens because we load ClipboardJS asynchronously. + if (window.ClipboardJS === undefined) { + setTimeout(addCopyButtonToCodeCells, 250) + return + } + + // Add copybuttons to all of our code cells + const COPYBUTTON_SELECTOR = 'div.highlight pre'; + const codeCells = document.querySelectorAll(COPYBUTTON_SELECTOR) + codeCells.forEach((codeCell, index) => { + const id = codeCellId(index) + codeCell.setAttribute('id', id) + + const clipboardButton = id => + `` + codeCell.insertAdjacentHTML('afterend', clipboardButton(id)) + }) + +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} + + +var copyTargetText = (trigger) => { + var target = document.querySelector(trigger.attributes['data-clipboard-target'].value); + + // get filtered text + let exclude = '.linenos'; + + let text = filterText(target, exclude); + return formatCopyText(text, '', false, true, true, true, '', '') +} + + // Initialize with a callback so we can modify the text before copy + const clipboard = new ClipboardJS('.copybtn', {text: copyTargetText}) + + // Update UI with error/success messages + clipboard.on('success', event => { + clearSelection() + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_success']) + temporarilyChangeIcon(event.trigger) + }) + + clipboard.on('error', event => { + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_failure']) + }) +} + +runWhenDOMLoaded(addCopyButtonToCodeCells) \ No newline at end of file diff --git a/build/manual/_static/copybutton_funcs.js b/build/manual/_static/copybutton_funcs.js new file mode 100644 index 0000000..dbe1aaa --- /dev/null +++ b/build/manual/_static/copybutton_funcs.js @@ -0,0 +1,73 @@ +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +export function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +export function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} diff --git a/build/manual/_static/custom.css b/build/manual/_static/custom.css new file mode 100644 index 0000000..603b20f --- /dev/null +++ b/build/manual/_static/custom.css @@ -0,0 +1,20 @@ +h3 { + margin-top: 1.75rem; + margin-bottom: 0.5rem; +} + +code.literal { + padding-left: 0.25rem !important; + padding-right: 0.25rem !important; + padding-top: 0.25rem !important; + padding-bottom: 0.15rem !important; +} + +img[src*="if_mode_graph_b.png"] { + background-color: rgb(169, 177, 186); +} + +dt.sig { + margin-bottom: 0.75rem; + margin-top: 1.75rem; +} diff --git a/build/manual/_static/debug.css b/build/manual/_static/debug.css new file mode 100644 index 0000000..74d4aec --- /dev/null +++ b/build/manual/_static/debug.css @@ -0,0 +1,69 @@ +/* + This CSS file should be overridden by the theme authors. It's + meant for debugging and developing the skeleton that this theme provides. +*/ +body { + font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, + "Apple Color Emoji", "Segoe UI Emoji"; + background: lavender; +} +.sb-announcement { + background: rgb(131, 131, 131); +} +.sb-announcement__inner { + background: black; + color: white; +} +.sb-header { + background: lightskyblue; +} +.sb-header__inner { + background: royalblue; + color: white; +} +.sb-header-secondary { + background: lightcyan; +} +.sb-header-secondary__inner { + background: cornflowerblue; + color: white; +} +.sb-sidebar-primary { + background: lightgreen; +} +.sb-main { + background: blanchedalmond; +} +.sb-main__inner { + background: antiquewhite; +} +.sb-header-article { + background: lightsteelblue; +} +.sb-article-container { + background: snow; +} +.sb-article-main { + background: white; +} +.sb-footer-article { + background: lightpink; +} +.sb-sidebar-secondary { + background: lightgoldenrodyellow; +} +.sb-footer-content { + background: plum; +} +.sb-footer-content__inner { + background: palevioletred; +} +.sb-footer { + background: pink; +} +.sb-footer__inner { + background: salmon; +} +.sb-article { + background: white; +} diff --git a/build/manual/_static/doctools.js b/build/manual/_static/doctools.js new file mode 100644 index 0000000..527b876 --- /dev/null +++ b/build/manual/_static/doctools.js @@ -0,0 +1,156 @@ +/* + * doctools.js + * ~~~~~~~~~~~ + * + * Base JavaScript utilities for all Sphinx HTML documentation. + * + * :copyright: Copyright 2007-2022 by the Sphinx team, see AUTHORS. + * :license: BSD, see LICENSE for details. + * + */ +"use strict"; + +const BLACKLISTED_KEY_CONTROL_ELEMENTS = new Set([ + "TEXTAREA", + "INPUT", + "SELECT", + "BUTTON", +]); + +const _ready = (callback) => { + if (document.readyState !== "loading") { + callback(); + } else { + document.addEventListener("DOMContentLoaded", callback); + } +}; + +/** + * Small JavaScript module for the documentation. + */ +const Documentation = { + init: () => { + Documentation.initDomainIndexTable(); + Documentation.initOnKeyListeners(); + }, + + /** + * i18n support + */ + TRANSLATIONS: {}, + PLURAL_EXPR: (n) => (n === 1 ? 0 : 1), + LOCALE: "unknown", + + // gettext and ngettext don't access this so that the functions + // can safely bound to a different name (_ = Documentation.gettext) + gettext: (string) => { + const translated = Documentation.TRANSLATIONS[string]; + switch (typeof translated) { + case "undefined": + return string; // no translation + case "string": + return translated; // translation exists + default: + return translated[0]; // (singular, plural) translation tuple exists + } + }, + + ngettext: (singular, plural, n) => { + const translated = Documentation.TRANSLATIONS[singular]; + if (typeof translated !== "undefined") + return translated[Documentation.PLURAL_EXPR(n)]; + return n === 1 ? singular : plural; + }, + + addTranslations: (catalog) => { + Object.assign(Documentation.TRANSLATIONS, catalog.messages); + Documentation.PLURAL_EXPR = new Function( + "n", + `return (${catalog.plural_expr})` + ); + Documentation.LOCALE = catalog.locale; + }, + + /** + * helper function to focus on search bar + */ + focusSearchBar: () => { + document.querySelectorAll("input[name=q]")[0]?.focus(); + }, + + /** + * Initialise the domain index toggle buttons + */ + initDomainIndexTable: () => { + const toggler = (el) => { + const idNumber = el.id.substr(7); + const toggledRows = document.querySelectorAll(`tr.cg-${idNumber}`); + if (el.src.substr(-9) === "minus.png") { + el.src = `${el.src.substr(0, el.src.length - 9)}plus.png`; + toggledRows.forEach((el) => (el.style.display = "none")); + } else { + el.src = `${el.src.substr(0, el.src.length - 8)}minus.png`; + toggledRows.forEach((el) => (el.style.display = "")); + } + }; + + const togglerElements = document.querySelectorAll("img.toggler"); + togglerElements.forEach((el) => + el.addEventListener("click", (event) => toggler(event.currentTarget)) + ); + togglerElements.forEach((el) => (el.style.display = "")); + if (DOCUMENTATION_OPTIONS.COLLAPSE_INDEX) togglerElements.forEach(toggler); + }, + + initOnKeyListeners: () => { + // only install a listener if it is really needed + if ( + !DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS && + !DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS + ) + return; + + document.addEventListener("keydown", (event) => { + // bail for input elements + if (BLACKLISTED_KEY_CONTROL_ELEMENTS.has(document.activeElement.tagName)) return; + // bail with special keys + if (event.altKey || event.ctrlKey || event.metaKey) return; + + if (!event.shiftKey) { + switch (event.key) { + case "ArrowLeft": + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS) break; + + const prevLink = document.querySelector('link[rel="prev"]'); + if (prevLink && prevLink.href) { + window.location.href = prevLink.href; + event.preventDefault(); + } + break; + case "ArrowRight": + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS) break; + + const nextLink = document.querySelector('link[rel="next"]'); + if (nextLink && nextLink.href) { + window.location.href = nextLink.href; + event.preventDefault(); + } + break; + } + } + + // some keyboard layouts may need Shift to get / + switch (event.key) { + case "/": + if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) break; + Documentation.focusSearchBar(); + event.preventDefault(); + } + }); + }, +}; + +// quick alias for translations +const _ = Documentation.gettext; + +_ready(Documentation.init); diff --git a/build/manual/_static/documentation_options.js b/build/manual/_static/documentation_options.js new file mode 100644 index 0000000..5383d26 --- /dev/null +++ b/build/manual/_static/documentation_options.js @@ -0,0 +1,14 @@ +var DOCUMENTATION_OPTIONS = { + URL_ROOT: document.getElementById("documentation_options").getAttribute('data-url_root'), + VERSION: '0.5.5 beta', + LANGUAGE: 'en', + COLLAPSE_INDEX: false, + BUILDER: 'html', + FILE_SUFFIX: '.html', + LINK_SUFFIX: '.html', + HAS_SOURCE: true, + SOURCELINK_SUFFIX: '.txt', + NAVIGATION_WITH_KEYS: false, + SHOW_SEARCH_SUMMARY: true, + ENABLE_SEARCH_SHORTCUTS: true, +}; \ No newline at end of file diff --git a/build/manual/_static/file.png b/build/manual/_static/file.png new file mode 100644 index 0000000..a858a41 Binary files /dev/null and b/build/manual/_static/file.png differ diff --git a/build/manual/_static/jquery-3.6.0.js b/build/manual/_static/jquery-3.6.0.js new file mode 100644 index 0000000..fc6c299 --- /dev/null +++ b/build/manual/_static/jquery-3.6.0.js @@ -0,0 +1,10881 @@ +/*! + * jQuery JavaScript Library v3.6.0 + * https://jquery.com/ + * + * Includes Sizzle.js + * https://sizzlejs.com/ + * + * Copyright OpenJS Foundation and other contributors + * Released under the MIT license + * https://jquery.org/license + * + * Date: 2021-03-02T17:08Z + */ +( function( global, factory ) { + + "use strict"; + + if ( typeof module === "object" && typeof module.exports === "object" ) { + + // For CommonJS and CommonJS-like environments where a proper `window` + // is present, execute the factory and get jQuery. + // For environments that do not have a `window` with a `document` + // (such as Node.js), expose a factory as module.exports. + // This accentuates the need for the creation of a real `window`. + // e.g. var jQuery = require("jquery")(window); + // See ticket #14549 for more info. + module.exports = global.document ? + factory( global, true ) : + function( w ) { + if ( !w.document ) { + throw new Error( "jQuery requires a window with a document" ); + } + return factory( w ); + }; + } else { + factory( global ); + } + +// Pass this if window is not defined yet +} )( typeof window !== "undefined" ? window : this, function( window, noGlobal ) { + +// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1 +// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode +// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common +// enough that all such attempts are guarded in a try block. +"use strict"; + +var arr = []; + +var getProto = Object.getPrototypeOf; + +var slice = arr.slice; + +var flat = arr.flat ? function( array ) { + return arr.flat.call( array ); +} : function( array ) { + return arr.concat.apply( [], array ); +}; + + +var push = arr.push; + +var indexOf = arr.indexOf; + +var class2type = {}; + +var toString = class2type.toString; + +var hasOwn = class2type.hasOwnProperty; + +var fnToString = hasOwn.toString; + +var ObjectFunctionString = fnToString.call( Object ); + +var support = {}; + +var isFunction = function isFunction( obj ) { + + // Support: Chrome <=57, Firefox <=52 + // In some browsers, typeof returns "function" for HTML elements + // (i.e., `typeof document.createElement( "object" ) === "function"`). + // We don't want to classify *any* DOM node as a function. + // Support: QtWeb <=3.8.5, WebKit <=534.34, wkhtmltopdf tool <=0.12.5 + // Plus for old WebKit, typeof returns "function" for HTML collections + // (e.g., `typeof document.getElementsByTagName("div") === "function"`). (gh-4756) + return typeof obj === "function" && typeof obj.nodeType !== "number" && + typeof obj.item !== "function"; + }; + + +var isWindow = function isWindow( obj ) { + return obj != null && obj === obj.window; + }; + + +var document = window.document; + + + + var preservedScriptAttributes = { + type: true, + src: true, + nonce: true, + noModule: true + }; + + function DOMEval( code, node, doc ) { + doc = doc || document; + + var i, val, + script = doc.createElement( "script" ); + + script.text = code; + if ( node ) { + for ( i in preservedScriptAttributes ) { + + // Support: Firefox 64+, Edge 18+ + // Some browsers don't support the "nonce" property on scripts. + // On the other hand, just using `getAttribute` is not enough as + // the `nonce` attribute is reset to an empty string whenever it + // becomes browsing-context connected. + // See https://github.com/whatwg/html/issues/2369 + // See https://html.spec.whatwg.org/#nonce-attributes + // The `node.getAttribute` check was added for the sake of + // `jQuery.globalEval` so that it can fake a nonce-containing node + // via an object. + val = node[ i ] || node.getAttribute && node.getAttribute( i ); + if ( val ) { + script.setAttribute( i, val ); + } + } + } + doc.head.appendChild( script ).parentNode.removeChild( script ); + } + + +function toType( obj ) { + if ( obj == null ) { + return obj + ""; + } + + // Support: Android <=2.3 only (functionish RegExp) + return typeof obj === "object" || typeof obj === "function" ? + class2type[ toString.call( obj ) ] || "object" : + typeof obj; +} +/* global Symbol */ +// Defining this global in .eslintrc.json would create a danger of using the global +// unguarded in another place, it seems safer to define global only for this module + + + +var + version = "3.6.0", + + // Define a local copy of jQuery + jQuery = function( selector, context ) { + + // The jQuery object is actually just the init constructor 'enhanced' + // Need init if jQuery is called (just allow error to be thrown if not included) + return new jQuery.fn.init( selector, context ); + }; + +jQuery.fn = jQuery.prototype = { + + // The current version of jQuery being used + jquery: version, + + constructor: jQuery, + + // The default length of a jQuery object is 0 + length: 0, + + toArray: function() { + return slice.call( this ); + }, + + // Get the Nth element in the matched element set OR + // Get the whole matched element set as a clean array + get: function( num ) { + + // Return all the elements in a clean array + if ( num == null ) { + return slice.call( this ); + } + + // Return just the one element from the set + return num < 0 ? this[ num + this.length ] : this[ num ]; + }, + + // Take an array of elements and push it onto the stack + // (returning the new matched element set) + pushStack: function( elems ) { + + // Build a new jQuery matched element set + var ret = jQuery.merge( this.constructor(), elems ); + + // Add the old object onto the stack (as a reference) + ret.prevObject = this; + + // Return the newly-formed element set + return ret; + }, + + // Execute a callback for every element in the matched set. + each: function( callback ) { + return jQuery.each( this, callback ); + }, + + map: function( callback ) { + return this.pushStack( jQuery.map( this, function( elem, i ) { + return callback.call( elem, i, elem ); + } ) ); + }, + + slice: function() { + return this.pushStack( slice.apply( this, arguments ) ); + }, + + first: function() { + return this.eq( 0 ); + }, + + last: function() { + return this.eq( -1 ); + }, + + even: function() { + return this.pushStack( jQuery.grep( this, function( _elem, i ) { + return ( i + 1 ) % 2; + } ) ); + }, + + odd: function() { + return this.pushStack( jQuery.grep( this, function( _elem, i ) { + return i % 2; + } ) ); + }, + + eq: function( i ) { + var len = this.length, + j = +i + ( i < 0 ? len : 0 ); + return this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] ); + }, + + end: function() { + return this.prevObject || this.constructor(); + }, + + // For internal use only. + // Behaves like an Array's method, not like a jQuery method. + push: push, + sort: arr.sort, + splice: arr.splice +}; + +jQuery.extend = jQuery.fn.extend = function() { + var options, name, src, copy, copyIsArray, clone, + target = arguments[ 0 ] || {}, + i = 1, + length = arguments.length, + deep = false; + + // Handle a deep copy situation + if ( typeof target === "boolean" ) { + deep = target; + + // Skip the boolean and the target + target = arguments[ i ] || {}; + i++; + } + + // Handle case when target is a string or something (possible in deep copy) + if ( typeof target !== "object" && !isFunction( target ) ) { + target = {}; + } + + // Extend jQuery itself if only one argument is passed + if ( i === length ) { + target = this; + i--; + } + + for ( ; i < length; i++ ) { + + // Only deal with non-null/undefined values + if ( ( options = arguments[ i ] ) != null ) { + + // Extend the base object + for ( name in options ) { + copy = options[ name ]; + + // Prevent Object.prototype pollution + // Prevent never-ending loop + if ( name === "__proto__" || target === copy ) { + continue; + } + + // Recurse if we're merging plain objects or arrays + if ( deep && copy && ( jQuery.isPlainObject( copy ) || + ( copyIsArray = Array.isArray( copy ) ) ) ) { + src = target[ name ]; + + // Ensure proper type for the source value + if ( copyIsArray && !Array.isArray( src ) ) { + clone = []; + } else if ( !copyIsArray && !jQuery.isPlainObject( src ) ) { + clone = {}; + } else { + clone = src; + } + copyIsArray = false; + + // Never move original objects, clone them + target[ name ] = jQuery.extend( deep, clone, copy ); + + // Don't bring in undefined values + } else if ( copy !== undefined ) { + target[ name ] = copy; + } + } + } + } + + // Return the modified object + return target; +}; + +jQuery.extend( { + + // Unique for each copy of jQuery on the page + expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ), + + // Assume jQuery is ready without the ready module + isReady: true, + + error: function( msg ) { + throw new Error( msg ); + }, + + noop: function() {}, + + isPlainObject: function( obj ) { + var proto, Ctor; + + // Detect obvious negatives + // Use toString instead of jQuery.type to catch host objects + if ( !obj || toString.call( obj ) !== "[object Object]" ) { + return false; + } + + proto = getProto( obj ); + + // Objects with no prototype (e.g., `Object.create( null )`) are plain + if ( !proto ) { + return true; + } + + // Objects with prototype are plain iff they were constructed by a global Object function + Ctor = hasOwn.call( proto, "constructor" ) && proto.constructor; + return typeof Ctor === "function" && fnToString.call( Ctor ) === ObjectFunctionString; + }, + + isEmptyObject: function( obj ) { + var name; + + for ( name in obj ) { + return false; + } + return true; + }, + + // Evaluates a script in a provided context; falls back to the global one + // if not specified. + globalEval: function( code, options, doc ) { + DOMEval( code, { nonce: options && options.nonce }, doc ); + }, + + each: function( obj, callback ) { + var length, i = 0; + + if ( isArrayLike( obj ) ) { + length = obj.length; + for ( ; i < length; i++ ) { + if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) { + break; + } + } + } else { + for ( i in obj ) { + if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) { + break; + } + } + } + + return obj; + }, + + // results is for internal usage only + makeArray: function( arr, results ) { + var ret = results || []; + + if ( arr != null ) { + if ( isArrayLike( Object( arr ) ) ) { + jQuery.merge( ret, + typeof arr === "string" ? + [ arr ] : arr + ); + } else { + push.call( ret, arr ); + } + } + + return ret; + }, + + inArray: function( elem, arr, i ) { + return arr == null ? -1 : indexOf.call( arr, elem, i ); + }, + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + merge: function( first, second ) { + var len = +second.length, + j = 0, + i = first.length; + + for ( ; j < len; j++ ) { + first[ i++ ] = second[ j ]; + } + + first.length = i; + + return first; + }, + + grep: function( elems, callback, invert ) { + var callbackInverse, + matches = [], + i = 0, + length = elems.length, + callbackExpect = !invert; + + // Go through the array, only saving the items + // that pass the validator function + for ( ; i < length; i++ ) { + callbackInverse = !callback( elems[ i ], i ); + if ( callbackInverse !== callbackExpect ) { + matches.push( elems[ i ] ); + } + } + + return matches; + }, + + // arg is for internal usage only + map: function( elems, callback, arg ) { + var length, value, + i = 0, + ret = []; + + // Go through the array, translating each of the items to their new values + if ( isArrayLike( elems ) ) { + length = elems.length; + for ( ; i < length; i++ ) { + value = callback( elems[ i ], i, arg ); + + if ( value != null ) { + ret.push( value ); + } + } + + // Go through every key on the object, + } else { + for ( i in elems ) { + value = callback( elems[ i ], i, arg ); + + if ( value != null ) { + ret.push( value ); + } + } + } + + // Flatten any nested arrays + return flat( ret ); + }, + + // A global GUID counter for objects + guid: 1, + + // jQuery.support is not used in Core but other projects attach their + // properties to it so it needs to exist. + support: support +} ); + +if ( typeof Symbol === "function" ) { + jQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ]; +} + +// Populate the class2type map +jQuery.each( "Boolean Number String Function Array Date RegExp Object Error Symbol".split( " " ), + function( _i, name ) { + class2type[ "[object " + name + "]" ] = name.toLowerCase(); + } ); + +function isArrayLike( obj ) { + + // Support: real iOS 8.2 only (not reproducible in simulator) + // `in` check used to prevent JIT error (gh-2145) + // hasOwn isn't used here due to false negatives + // regarding Nodelist length in IE + var length = !!obj && "length" in obj && obj.length, + type = toType( obj ); + + if ( isFunction( obj ) || isWindow( obj ) ) { + return false; + } + + return type === "array" || length === 0 || + typeof length === "number" && length > 0 && ( length - 1 ) in obj; +} +var Sizzle = +/*! + * Sizzle CSS Selector Engine v2.3.6 + * https://sizzlejs.com/ + * + * Copyright JS Foundation and other contributors + * Released under the MIT license + * https://js.foundation/ + * + * Date: 2021-02-16 + */ +( function( window ) { +var i, + support, + Expr, + getText, + isXML, + tokenize, + compile, + select, + outermostContext, + sortInput, + hasDuplicate, + + // Local document vars + setDocument, + document, + docElem, + documentIsHTML, + rbuggyQSA, + rbuggyMatches, + matches, + contains, + + // Instance-specific data + expando = "sizzle" + 1 * new Date(), + preferredDoc = window.document, + dirruns = 0, + done = 0, + classCache = createCache(), + tokenCache = createCache(), + compilerCache = createCache(), + nonnativeSelectorCache = createCache(), + sortOrder = function( a, b ) { + if ( a === b ) { + hasDuplicate = true; + } + return 0; + }, + + // Instance methods + hasOwn = ( {} ).hasOwnProperty, + arr = [], + pop = arr.pop, + pushNative = arr.push, + push = arr.push, + slice = arr.slice, + + // Use a stripped-down indexOf as it's faster than native + // https://jsperf.com/thor-indexof-vs-for/5 + indexOf = function( list, elem ) { + var i = 0, + len = list.length; + for ( ; i < len; i++ ) { + if ( list[ i ] === elem ) { + return i; + } + } + return -1; + }, + + booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|" + + "ismap|loop|multiple|open|readonly|required|scoped", + + // Regular expressions + + // http://www.w3.org/TR/css3-selectors/#whitespace + whitespace = "[\\x20\\t\\r\\n\\f]", + + // https://www.w3.org/TR/css-syntax-3/#ident-token-diagram + identifier = "(?:\\\\[\\da-fA-F]{1,6}" + whitespace + + "?|\\\\[^\\r\\n\\f]|[\\w-]|[^\0-\\x7f])+", + + // Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors + attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace + + + // Operator (capture 2) + "*([*^$|!~]?=)" + whitespace + + + // "Attribute values must be CSS identifiers [capture 5] + // or strings [capture 3 or capture 4]" + "*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + + whitespace + "*\\]", + + pseudos = ":(" + identifier + ")(?:\\((" + + + // To reduce the number of selectors needing tokenize in the preFilter, prefer arguments: + // 1. quoted (capture 3; capture 4 or capture 5) + "('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" + + + // 2. simple (capture 6) + "((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" + + + // 3. anything else (capture 2) + ".*" + + ")\\)|)", + + // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter + rwhitespace = new RegExp( whitespace + "+", "g" ), + rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + + whitespace + "+$", "g" ), + + rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ), + rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + + "*" ), + rdescend = new RegExp( whitespace + "|>" ), + + rpseudo = new RegExp( pseudos ), + ridentifier = new RegExp( "^" + identifier + "$" ), + + matchExpr = { + "ID": new RegExp( "^#(" + identifier + ")" ), + "CLASS": new RegExp( "^\\.(" + identifier + ")" ), + "TAG": new RegExp( "^(" + identifier + "|[*])" ), + "ATTR": new RegExp( "^" + attributes ), + "PSEUDO": new RegExp( "^" + pseudos ), + "CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + + whitespace + "*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + + whitespace + "*(\\d+)|))" + whitespace + "*\\)|)", "i" ), + "bool": new RegExp( "^(?:" + booleans + ")$", "i" ), + + // For use in libraries implementing .is() + // We use this for POS matching in `select` + "needsContext": new RegExp( "^" + whitespace + + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" + whitespace + + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" ) + }, + + rhtml = /HTML$/i, + rinputs = /^(?:input|select|textarea|button)$/i, + rheader = /^h\d$/i, + + rnative = /^[^{]+\{\s*\[native \w/, + + // Easily-parseable/retrievable ID or TAG or CLASS selectors + rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/, + + rsibling = /[+~]/, + + // CSS escapes + // http://www.w3.org/TR/CSS21/syndata.html#escaped-characters + runescape = new RegExp( "\\\\[\\da-fA-F]{1,6}" + whitespace + "?|\\\\([^\\r\\n\\f])", "g" ), + funescape = function( escape, nonHex ) { + var high = "0x" + escape.slice( 1 ) - 0x10000; + + return nonHex ? + + // Strip the backslash prefix from a non-hex escape sequence + nonHex : + + // Replace a hexadecimal escape sequence with the encoded Unicode code point + // Support: IE <=11+ + // For values outside the Basic Multilingual Plane (BMP), manually construct a + // surrogate pair + high < 0 ? + String.fromCharCode( high + 0x10000 ) : + String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 ); + }, + + // CSS string/identifier serialization + // https://drafts.csswg.org/cssom/#common-serializing-idioms + rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g, + fcssescape = function( ch, asCodePoint ) { + if ( asCodePoint ) { + + // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER + if ( ch === "\0" ) { + return "\uFFFD"; + } + + // Control characters and (dependent upon position) numbers get escaped as code points + return ch.slice( 0, -1 ) + "\\" + + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + " "; + } + + // Other potentially-special ASCII characters get backslash-escaped + return "\\" + ch; + }, + + // Used for iframes + // See setDocument() + // Removing the function wrapper causes a "Permission Denied" + // error in IE + unloadHandler = function() { + setDocument(); + }, + + inDisabledFieldset = addCombinator( + function( elem ) { + return elem.disabled === true && elem.nodeName.toLowerCase() === "fieldset"; + }, + { dir: "parentNode", next: "legend" } + ); + +// Optimize for push.apply( _, NodeList ) +try { + push.apply( + ( arr = slice.call( preferredDoc.childNodes ) ), + preferredDoc.childNodes + ); + + // Support: Android<4.0 + // Detect silently failing push.apply + // eslint-disable-next-line no-unused-expressions + arr[ preferredDoc.childNodes.length ].nodeType; +} catch ( e ) { + push = { apply: arr.length ? + + // Leverage slice if possible + function( target, els ) { + pushNative.apply( target, slice.call( els ) ); + } : + + // Support: IE<9 + // Otherwise append directly + function( target, els ) { + var j = target.length, + i = 0; + + // Can't trust NodeList.length + while ( ( target[ j++ ] = els[ i++ ] ) ) {} + target.length = j - 1; + } + }; +} + +function Sizzle( selector, context, results, seed ) { + var m, i, elem, nid, match, groups, newSelector, + newContext = context && context.ownerDocument, + + // nodeType defaults to 9, since context defaults to document + nodeType = context ? context.nodeType : 9; + + results = results || []; + + // Return early from calls with invalid selector or context + if ( typeof selector !== "string" || !selector || + nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) { + + return results; + } + + // Try to shortcut find operations (as opposed to filters) in HTML documents + if ( !seed ) { + setDocument( context ); + context = context || document; + + if ( documentIsHTML ) { + + // If the selector is sufficiently simple, try using a "get*By*" DOM method + // (excepting DocumentFragment context, where the methods don't exist) + if ( nodeType !== 11 && ( match = rquickExpr.exec( selector ) ) ) { + + // ID selector + if ( ( m = match[ 1 ] ) ) { + + // Document context + if ( nodeType === 9 ) { + if ( ( elem = context.getElementById( m ) ) ) { + + // Support: IE, Opera, Webkit + // TODO: identify versions + // getElementById can match elements by name instead of ID + if ( elem.id === m ) { + results.push( elem ); + return results; + } + } else { + return results; + } + + // Element context + } else { + + // Support: IE, Opera, Webkit + // TODO: identify versions + // getElementById can match elements by name instead of ID + if ( newContext && ( elem = newContext.getElementById( m ) ) && + contains( context, elem ) && + elem.id === m ) { + + results.push( elem ); + return results; + } + } + + // Type selector + } else if ( match[ 2 ] ) { + push.apply( results, context.getElementsByTagName( selector ) ); + return results; + + // Class selector + } else if ( ( m = match[ 3 ] ) && support.getElementsByClassName && + context.getElementsByClassName ) { + + push.apply( results, context.getElementsByClassName( m ) ); + return results; + } + } + + // Take advantage of querySelectorAll + if ( support.qsa && + !nonnativeSelectorCache[ selector + " " ] && + ( !rbuggyQSA || !rbuggyQSA.test( selector ) ) && + + // Support: IE 8 only + // Exclude object elements + ( nodeType !== 1 || context.nodeName.toLowerCase() !== "object" ) ) { + + newSelector = selector; + newContext = context; + + // qSA considers elements outside a scoping root when evaluating child or + // descendant combinators, which is not what we want. + // In such cases, we work around the behavior by prefixing every selector in the + // list with an ID selector referencing the scope context. + // The technique has to be used as well when a leading combinator is used + // as such selectors are not recognized by querySelectorAll. + // Thanks to Andrew Dupont for this technique. + if ( nodeType === 1 && + ( rdescend.test( selector ) || rcombinators.test( selector ) ) ) { + + // Expand context for sibling selectors + newContext = rsibling.test( selector ) && testContext( context.parentNode ) || + context; + + // We can use :scope instead of the ID hack if the browser + // supports it & if we're not changing the context. + if ( newContext !== context || !support.scope ) { + + // Capture the context ID, setting it first if necessary + if ( ( nid = context.getAttribute( "id" ) ) ) { + nid = nid.replace( rcssescape, fcssescape ); + } else { + context.setAttribute( "id", ( nid = expando ) ); + } + } + + // Prefix every selector in the list + groups = tokenize( selector ); + i = groups.length; + while ( i-- ) { + groups[ i ] = ( nid ? "#" + nid : ":scope" ) + " " + + toSelector( groups[ i ] ); + } + newSelector = groups.join( "," ); + } + + try { + push.apply( results, + newContext.querySelectorAll( newSelector ) + ); + return results; + } catch ( qsaError ) { + nonnativeSelectorCache( selector, true ); + } finally { + if ( nid === expando ) { + context.removeAttribute( "id" ); + } + } + } + } + } + + // All others + return select( selector.replace( rtrim, "$1" ), context, results, seed ); +} + +/** + * Create key-value caches of limited size + * @returns {function(string, object)} Returns the Object data after storing it on itself with + * property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength) + * deleting the oldest entry + */ +function createCache() { + var keys = []; + + function cache( key, value ) { + + // Use (key + " ") to avoid collision with native prototype properties (see Issue #157) + if ( keys.push( key + " " ) > Expr.cacheLength ) { + + // Only keep the most recent entries + delete cache[ keys.shift() ]; + } + return ( cache[ key + " " ] = value ); + } + return cache; +} + +/** + * Mark a function for special use by Sizzle + * @param {Function} fn The function to mark + */ +function markFunction( fn ) { + fn[ expando ] = true; + return fn; +} + +/** + * Support testing using an element + * @param {Function} fn Passed the created element and returns a boolean result + */ +function assert( fn ) { + var el = document.createElement( "fieldset" ); + + try { + return !!fn( el ); + } catch ( e ) { + return false; + } finally { + + // Remove from its parent by default + if ( el.parentNode ) { + el.parentNode.removeChild( el ); + } + + // release memory in IE + el = null; + } +} + +/** + * Adds the same handler for all of the specified attrs + * @param {String} attrs Pipe-separated list of attributes + * @param {Function} handler The method that will be applied + */ +function addHandle( attrs, handler ) { + var arr = attrs.split( "|" ), + i = arr.length; + + while ( i-- ) { + Expr.attrHandle[ arr[ i ] ] = handler; + } +} + +/** + * Checks document order of two siblings + * @param {Element} a + * @param {Element} b + * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b + */ +function siblingCheck( a, b ) { + var cur = b && a, + diff = cur && a.nodeType === 1 && b.nodeType === 1 && + a.sourceIndex - b.sourceIndex; + + // Use IE sourceIndex if available on both nodes + if ( diff ) { + return diff; + } + + // Check if b follows a + if ( cur ) { + while ( ( cur = cur.nextSibling ) ) { + if ( cur === b ) { + return -1; + } + } + } + + return a ? 1 : -1; +} + +/** + * Returns a function to use in pseudos for input types + * @param {String} type + */ +function createInputPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === type; + }; +} + +/** + * Returns a function to use in pseudos for buttons + * @param {String} type + */ +function createButtonPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return ( name === "input" || name === "button" ) && elem.type === type; + }; +} + +/** + * Returns a function to use in pseudos for :enabled/:disabled + * @param {Boolean} disabled true for :disabled; false for :enabled + */ +function createDisabledPseudo( disabled ) { + + // Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable + return function( elem ) { + + // Only certain elements can match :enabled or :disabled + // https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled + // https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled + if ( "form" in elem ) { + + // Check for inherited disabledness on relevant non-disabled elements: + // * listed form-associated elements in a disabled fieldset + // https://html.spec.whatwg.org/multipage/forms.html#category-listed + // https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled + // * option elements in a disabled optgroup + // https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled + // All such elements have a "form" property. + if ( elem.parentNode && elem.disabled === false ) { + + // Option elements defer to a parent optgroup if present + if ( "label" in elem ) { + if ( "label" in elem.parentNode ) { + return elem.parentNode.disabled === disabled; + } else { + return elem.disabled === disabled; + } + } + + // Support: IE 6 - 11 + // Use the isDisabled shortcut property to check for disabled fieldset ancestors + return elem.isDisabled === disabled || + + // Where there is no isDisabled, check manually + /* jshint -W018 */ + elem.isDisabled !== !disabled && + inDisabledFieldset( elem ) === disabled; + } + + return elem.disabled === disabled; + + // Try to winnow out elements that can't be disabled before trusting the disabled property. + // Some victims get caught in our net (label, legend, menu, track), but it shouldn't + // even exist on them, let alone have a boolean value. + } else if ( "label" in elem ) { + return elem.disabled === disabled; + } + + // Remaining elements are neither :enabled nor :disabled + return false; + }; +} + +/** + * Returns a function to use in pseudos for positionals + * @param {Function} fn + */ +function createPositionalPseudo( fn ) { + return markFunction( function( argument ) { + argument = +argument; + return markFunction( function( seed, matches ) { + var j, + matchIndexes = fn( [], seed.length, argument ), + i = matchIndexes.length; + + // Match elements found at the specified indexes + while ( i-- ) { + if ( seed[ ( j = matchIndexes[ i ] ) ] ) { + seed[ j ] = !( matches[ j ] = seed[ j ] ); + } + } + } ); + } ); +} + +/** + * Checks a node for validity as a Sizzle context + * @param {Element|Object=} context + * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value + */ +function testContext( context ) { + return context && typeof context.getElementsByTagName !== "undefined" && context; +} + +// Expose support vars for convenience +support = Sizzle.support = {}; + +/** + * Detects XML nodes + * @param {Element|Object} elem An element or a document + * @returns {Boolean} True iff elem is a non-HTML XML node + */ +isXML = Sizzle.isXML = function( elem ) { + var namespace = elem && elem.namespaceURI, + docElem = elem && ( elem.ownerDocument || elem ).documentElement; + + // Support: IE <=8 + // Assume HTML when documentElement doesn't yet exist, such as inside loading iframes + // https://bugs.jquery.com/ticket/4833 + return !rhtml.test( namespace || docElem && docElem.nodeName || "HTML" ); +}; + +/** + * Sets document-related variables once based on the current document + * @param {Element|Object} [doc] An element or document object to use to set the document + * @returns {Object} Returns the current document + */ +setDocument = Sizzle.setDocument = function( node ) { + var hasCompare, subWindow, + doc = node ? node.ownerDocument || node : preferredDoc; + + // Return early if doc is invalid or already selected + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( doc == document || doc.nodeType !== 9 || !doc.documentElement ) { + return document; + } + + // Update global variables + document = doc; + docElem = document.documentElement; + documentIsHTML = !isXML( document ); + + // Support: IE 9 - 11+, Edge 12 - 18+ + // Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936) + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( preferredDoc != document && + ( subWindow = document.defaultView ) && subWindow.top !== subWindow ) { + + // Support: IE 11, Edge + if ( subWindow.addEventListener ) { + subWindow.addEventListener( "unload", unloadHandler, false ); + + // Support: IE 9 - 10 only + } else if ( subWindow.attachEvent ) { + subWindow.attachEvent( "onunload", unloadHandler ); + } + } + + // Support: IE 8 - 11+, Edge 12 - 18+, Chrome <=16 - 25 only, Firefox <=3.6 - 31 only, + // Safari 4 - 5 only, Opera <=11.6 - 12.x only + // IE/Edge & older browsers don't support the :scope pseudo-class. + // Support: Safari 6.0 only + // Safari 6.0 supports :scope but it's an alias of :root there. + support.scope = assert( function( el ) { + docElem.appendChild( el ).appendChild( document.createElement( "div" ) ); + return typeof el.querySelectorAll !== "undefined" && + !el.querySelectorAll( ":scope fieldset div" ).length; + } ); + + /* Attributes + ---------------------------------------------------------------------- */ + + // Support: IE<8 + // Verify that getAttribute really returns attributes and not properties + // (excepting IE8 booleans) + support.attributes = assert( function( el ) { + el.className = "i"; + return !el.getAttribute( "className" ); + } ); + + /* getElement(s)By* + ---------------------------------------------------------------------- */ + + // Check if getElementsByTagName("*") returns only elements + support.getElementsByTagName = assert( function( el ) { + el.appendChild( document.createComment( "" ) ); + return !el.getElementsByTagName( "*" ).length; + } ); + + // Support: IE<9 + support.getElementsByClassName = rnative.test( document.getElementsByClassName ); + + // Support: IE<10 + // Check if getElementById returns elements by name + // The broken getElementById methods don't pick up programmatically-set names, + // so use a roundabout getElementsByName test + support.getById = assert( function( el ) { + docElem.appendChild( el ).id = expando; + return !document.getElementsByName || !document.getElementsByName( expando ).length; + } ); + + // ID filter and find + if ( support.getById ) { + Expr.filter[ "ID" ] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + return elem.getAttribute( "id" ) === attrId; + }; + }; + Expr.find[ "ID" ] = function( id, context ) { + if ( typeof context.getElementById !== "undefined" && documentIsHTML ) { + var elem = context.getElementById( id ); + return elem ? [ elem ] : []; + } + }; + } else { + Expr.filter[ "ID" ] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + var node = typeof elem.getAttributeNode !== "undefined" && + elem.getAttributeNode( "id" ); + return node && node.value === attrId; + }; + }; + + // Support: IE 6 - 7 only + // getElementById is not reliable as a find shortcut + Expr.find[ "ID" ] = function( id, context ) { + if ( typeof context.getElementById !== "undefined" && documentIsHTML ) { + var node, i, elems, + elem = context.getElementById( id ); + + if ( elem ) { + + // Verify the id attribute + node = elem.getAttributeNode( "id" ); + if ( node && node.value === id ) { + return [ elem ]; + } + + // Fall back on getElementsByName + elems = context.getElementsByName( id ); + i = 0; + while ( ( elem = elems[ i++ ] ) ) { + node = elem.getAttributeNode( "id" ); + if ( node && node.value === id ) { + return [ elem ]; + } + } + } + + return []; + } + }; + } + + // Tag + Expr.find[ "TAG" ] = support.getElementsByTagName ? + function( tag, context ) { + if ( typeof context.getElementsByTagName !== "undefined" ) { + return context.getElementsByTagName( tag ); + + // DocumentFragment nodes don't have gEBTN + } else if ( support.qsa ) { + return context.querySelectorAll( tag ); + } + } : + + function( tag, context ) { + var elem, + tmp = [], + i = 0, + + // By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too + results = context.getElementsByTagName( tag ); + + // Filter out possible comments + if ( tag === "*" ) { + while ( ( elem = results[ i++ ] ) ) { + if ( elem.nodeType === 1 ) { + tmp.push( elem ); + } + } + + return tmp; + } + return results; + }; + + // Class + Expr.find[ "CLASS" ] = support.getElementsByClassName && function( className, context ) { + if ( typeof context.getElementsByClassName !== "undefined" && documentIsHTML ) { + return context.getElementsByClassName( className ); + } + }; + + /* QSA/matchesSelector + ---------------------------------------------------------------------- */ + + // QSA and matchesSelector support + + // matchesSelector(:active) reports false when true (IE9/Opera 11.5) + rbuggyMatches = []; + + // qSa(:focus) reports false when true (Chrome 21) + // We allow this because of a bug in IE8/9 that throws an error + // whenever `document.activeElement` is accessed on an iframe + // So, we allow :focus to pass through QSA all the time to avoid the IE error + // See https://bugs.jquery.com/ticket/13378 + rbuggyQSA = []; + + if ( ( support.qsa = rnative.test( document.querySelectorAll ) ) ) { + + // Build QSA regex + // Regex strategy adopted from Diego Perini + assert( function( el ) { + + var input; + + // Select is set to empty string on purpose + // This is to test IE's treatment of not explicitly + // setting a boolean content attribute, + // since its presence should be enough + // https://bugs.jquery.com/ticket/12359 + docElem.appendChild( el ).innerHTML = "" + + ""; + + // Support: IE8, Opera 11-12.16 + // Nothing should be selected when empty strings follow ^= or $= or *= + // The test attribute must be unknown in Opera but "safe" for WinRT + // https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section + if ( el.querySelectorAll( "[msallowcapture^='']" ).length ) { + rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" ); + } + + // Support: IE8 + // Boolean attributes and "value" are not treated correctly + if ( !el.querySelectorAll( "[selected]" ).length ) { + rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" ); + } + + // Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+ + if ( !el.querySelectorAll( "[id~=" + expando + "-]" ).length ) { + rbuggyQSA.push( "~=" ); + } + + // Support: IE 11+, Edge 15 - 18+ + // IE 11/Edge don't find elements on a `[name='']` query in some cases. + // Adding a temporary attribute to the document before the selection works + // around the issue. + // Interestingly, IE 10 & older don't seem to have the issue. + input = document.createElement( "input" ); + input.setAttribute( "name", "" ); + el.appendChild( input ); + if ( !el.querySelectorAll( "[name='']" ).length ) { + rbuggyQSA.push( "\\[" + whitespace + "*name" + whitespace + "*=" + + whitespace + "*(?:''|\"\")" ); + } + + // Webkit/Opera - :checked should return selected option elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + // IE8 throws error here and will not see later tests + if ( !el.querySelectorAll( ":checked" ).length ) { + rbuggyQSA.push( ":checked" ); + } + + // Support: Safari 8+, iOS 8+ + // https://bugs.webkit.org/show_bug.cgi?id=136851 + // In-page `selector#id sibling-combinator selector` fails + if ( !el.querySelectorAll( "a#" + expando + "+*" ).length ) { + rbuggyQSA.push( ".#.+[+~]" ); + } + + // Support: Firefox <=3.6 - 5 only + // Old Firefox doesn't throw on a badly-escaped identifier. + el.querySelectorAll( "\\\f" ); + rbuggyQSA.push( "[\\r\\n\\f]" ); + } ); + + assert( function( el ) { + el.innerHTML = "" + + ""; + + // Support: Windows 8 Native Apps + // The type and name attributes are restricted during .innerHTML assignment + var input = document.createElement( "input" ); + input.setAttribute( "type", "hidden" ); + el.appendChild( input ).setAttribute( "name", "D" ); + + // Support: IE8 + // Enforce case-sensitivity of name attribute + if ( el.querySelectorAll( "[name=d]" ).length ) { + rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" ); + } + + // FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled) + // IE8 throws error here and will not see later tests + if ( el.querySelectorAll( ":enabled" ).length !== 2 ) { + rbuggyQSA.push( ":enabled", ":disabled" ); + } + + // Support: IE9-11+ + // IE's :disabled selector does not pick up the children of disabled fieldsets + docElem.appendChild( el ).disabled = true; + if ( el.querySelectorAll( ":disabled" ).length !== 2 ) { + rbuggyQSA.push( ":enabled", ":disabled" ); + } + + // Support: Opera 10 - 11 only + // Opera 10-11 does not throw on post-comma invalid pseudos + el.querySelectorAll( "*,:x" ); + rbuggyQSA.push( ",.*:" ); + } ); + } + + if ( ( support.matchesSelector = rnative.test( ( matches = docElem.matches || + docElem.webkitMatchesSelector || + docElem.mozMatchesSelector || + docElem.oMatchesSelector || + docElem.msMatchesSelector ) ) ) ) { + + assert( function( el ) { + + // Check to see if it's possible to do matchesSelector + // on a disconnected node (IE 9) + support.disconnectedMatch = matches.call( el, "*" ); + + // This should fail with an exception + // Gecko does not error, returns false instead + matches.call( el, "[s!='']:x" ); + rbuggyMatches.push( "!=", pseudos ); + } ); + } + + rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join( "|" ) ); + rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join( "|" ) ); + + /* Contains + ---------------------------------------------------------------------- */ + hasCompare = rnative.test( docElem.compareDocumentPosition ); + + // Element contains another + // Purposefully self-exclusive + // As in, an element does not contain itself + contains = hasCompare || rnative.test( docElem.contains ) ? + function( a, b ) { + var adown = a.nodeType === 9 ? a.documentElement : a, + bup = b && b.parentNode; + return a === bup || !!( bup && bup.nodeType === 1 && ( + adown.contains ? + adown.contains( bup ) : + a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16 + ) ); + } : + function( a, b ) { + if ( b ) { + while ( ( b = b.parentNode ) ) { + if ( b === a ) { + return true; + } + } + } + return false; + }; + + /* Sorting + ---------------------------------------------------------------------- */ + + // Document order sorting + sortOrder = hasCompare ? + function( a, b ) { + + // Flag for duplicate removal + if ( a === b ) { + hasDuplicate = true; + return 0; + } + + // Sort on method existence if only one input has compareDocumentPosition + var compare = !a.compareDocumentPosition - !b.compareDocumentPosition; + if ( compare ) { + return compare; + } + + // Calculate position if both inputs belong to the same document + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + compare = ( a.ownerDocument || a ) == ( b.ownerDocument || b ) ? + a.compareDocumentPosition( b ) : + + // Otherwise we know they are disconnected + 1; + + // Disconnected nodes + if ( compare & 1 || + ( !support.sortDetached && b.compareDocumentPosition( a ) === compare ) ) { + + // Choose the first element that is related to our preferred document + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( a == document || a.ownerDocument == preferredDoc && + contains( preferredDoc, a ) ) { + return -1; + } + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( b == document || b.ownerDocument == preferredDoc && + contains( preferredDoc, b ) ) { + return 1; + } + + // Maintain original order + return sortInput ? + ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : + 0; + } + + return compare & 4 ? -1 : 1; + } : + function( a, b ) { + + // Exit early if the nodes are identical + if ( a === b ) { + hasDuplicate = true; + return 0; + } + + var cur, + i = 0, + aup = a.parentNode, + bup = b.parentNode, + ap = [ a ], + bp = [ b ]; + + // Parentless nodes are either documents or disconnected + if ( !aup || !bup ) { + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + /* eslint-disable eqeqeq */ + return a == document ? -1 : + b == document ? 1 : + /* eslint-enable eqeqeq */ + aup ? -1 : + bup ? 1 : + sortInput ? + ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : + 0; + + // If the nodes are siblings, we can do a quick check + } else if ( aup === bup ) { + return siblingCheck( a, b ); + } + + // Otherwise we need full lists of their ancestors for comparison + cur = a; + while ( ( cur = cur.parentNode ) ) { + ap.unshift( cur ); + } + cur = b; + while ( ( cur = cur.parentNode ) ) { + bp.unshift( cur ); + } + + // Walk down the tree looking for a discrepancy + while ( ap[ i ] === bp[ i ] ) { + i++; + } + + return i ? + + // Do a sibling check if the nodes have a common ancestor + siblingCheck( ap[ i ], bp[ i ] ) : + + // Otherwise nodes in our document sort first + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + /* eslint-disable eqeqeq */ + ap[ i ] == preferredDoc ? -1 : + bp[ i ] == preferredDoc ? 1 : + /* eslint-enable eqeqeq */ + 0; + }; + + return document; +}; + +Sizzle.matches = function( expr, elements ) { + return Sizzle( expr, null, null, elements ); +}; + +Sizzle.matchesSelector = function( elem, expr ) { + setDocument( elem ); + + if ( support.matchesSelector && documentIsHTML && + !nonnativeSelectorCache[ expr + " " ] && + ( !rbuggyMatches || !rbuggyMatches.test( expr ) ) && + ( !rbuggyQSA || !rbuggyQSA.test( expr ) ) ) { + + try { + var ret = matches.call( elem, expr ); + + // IE 9's matchesSelector returns false on disconnected nodes + if ( ret || support.disconnectedMatch || + + // As well, disconnected nodes are said to be in a document + // fragment in IE 9 + elem.document && elem.document.nodeType !== 11 ) { + return ret; + } + } catch ( e ) { + nonnativeSelectorCache( expr, true ); + } + } + + return Sizzle( expr, document, null, [ elem ] ).length > 0; +}; + +Sizzle.contains = function( context, elem ) { + + // Set document vars if needed + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( ( context.ownerDocument || context ) != document ) { + setDocument( context ); + } + return contains( context, elem ); +}; + +Sizzle.attr = function( elem, name ) { + + // Set document vars if needed + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( ( elem.ownerDocument || elem ) != document ) { + setDocument( elem ); + } + + var fn = Expr.attrHandle[ name.toLowerCase() ], + + // Don't get fooled by Object.prototype properties (jQuery #13807) + val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ? + fn( elem, name, !documentIsHTML ) : + undefined; + + return val !== undefined ? + val : + support.attributes || !documentIsHTML ? + elem.getAttribute( name ) : + ( val = elem.getAttributeNode( name ) ) && val.specified ? + val.value : + null; +}; + +Sizzle.escape = function( sel ) { + return ( sel + "" ).replace( rcssescape, fcssescape ); +}; + +Sizzle.error = function( msg ) { + throw new Error( "Syntax error, unrecognized expression: " + msg ); +}; + +/** + * Document sorting and removing duplicates + * @param {ArrayLike} results + */ +Sizzle.uniqueSort = function( results ) { + var elem, + duplicates = [], + j = 0, + i = 0; + + // Unless we *know* we can detect duplicates, assume their presence + hasDuplicate = !support.detectDuplicates; + sortInput = !support.sortStable && results.slice( 0 ); + results.sort( sortOrder ); + + if ( hasDuplicate ) { + while ( ( elem = results[ i++ ] ) ) { + if ( elem === results[ i ] ) { + j = duplicates.push( i ); + } + } + while ( j-- ) { + results.splice( duplicates[ j ], 1 ); + } + } + + // Clear input after sorting to release objects + // See https://github.com/jquery/sizzle/pull/225 + sortInput = null; + + return results; +}; + +/** + * Utility function for retrieving the text value of an array of DOM nodes + * @param {Array|Element} elem + */ +getText = Sizzle.getText = function( elem ) { + var node, + ret = "", + i = 0, + nodeType = elem.nodeType; + + if ( !nodeType ) { + + // If no nodeType, this is expected to be an array + while ( ( node = elem[ i++ ] ) ) { + + // Do not traverse comment nodes + ret += getText( node ); + } + } else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) { + + // Use textContent for elements + // innerText usage removed for consistency of new lines (jQuery #11153) + if ( typeof elem.textContent === "string" ) { + return elem.textContent; + } else { + + // Traverse its children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + ret += getText( elem ); + } + } + } else if ( nodeType === 3 || nodeType === 4 ) { + return elem.nodeValue; + } + + // Do not include comment or processing instruction nodes + + return ret; +}; + +Expr = Sizzle.selectors = { + + // Can be adjusted by the user + cacheLength: 50, + + createPseudo: markFunction, + + match: matchExpr, + + attrHandle: {}, + + find: {}, + + relative: { + ">": { dir: "parentNode", first: true }, + " ": { dir: "parentNode" }, + "+": { dir: "previousSibling", first: true }, + "~": { dir: "previousSibling" } + }, + + preFilter: { + "ATTR": function( match ) { + match[ 1 ] = match[ 1 ].replace( runescape, funescape ); + + // Move the given value to match[3] whether quoted or unquoted + match[ 3 ] = ( match[ 3 ] || match[ 4 ] || + match[ 5 ] || "" ).replace( runescape, funescape ); + + if ( match[ 2 ] === "~=" ) { + match[ 3 ] = " " + match[ 3 ] + " "; + } + + return match.slice( 0, 4 ); + }, + + "CHILD": function( match ) { + + /* matches from matchExpr["CHILD"] + 1 type (only|nth|...) + 2 what (child|of-type) + 3 argument (even|odd|\d*|\d*n([+-]\d+)?|...) + 4 xn-component of xn+y argument ([+-]?\d*n|) + 5 sign of xn-component + 6 x of xn-component + 7 sign of y-component + 8 y of y-component + */ + match[ 1 ] = match[ 1 ].toLowerCase(); + + if ( match[ 1 ].slice( 0, 3 ) === "nth" ) { + + // nth-* requires argument + if ( !match[ 3 ] ) { + Sizzle.error( match[ 0 ] ); + } + + // numeric x and y parameters for Expr.filter.CHILD + // remember that false/true cast respectively to 0/1 + match[ 4 ] = +( match[ 4 ] ? + match[ 5 ] + ( match[ 6 ] || 1 ) : + 2 * ( match[ 3 ] === "even" || match[ 3 ] === "odd" ) ); + match[ 5 ] = +( ( match[ 7 ] + match[ 8 ] ) || match[ 3 ] === "odd" ); + + // other types prohibit arguments + } else if ( match[ 3 ] ) { + Sizzle.error( match[ 0 ] ); + } + + return match; + }, + + "PSEUDO": function( match ) { + var excess, + unquoted = !match[ 6 ] && match[ 2 ]; + + if ( matchExpr[ "CHILD" ].test( match[ 0 ] ) ) { + return null; + } + + // Accept quoted arguments as-is + if ( match[ 3 ] ) { + match[ 2 ] = match[ 4 ] || match[ 5 ] || ""; + + // Strip excess characters from unquoted arguments + } else if ( unquoted && rpseudo.test( unquoted ) && + + // Get excess from tokenize (recursively) + ( excess = tokenize( unquoted, true ) ) && + + // advance to the next closing parenthesis + ( excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length ) ) { + + // excess is a negative index + match[ 0 ] = match[ 0 ].slice( 0, excess ); + match[ 2 ] = unquoted.slice( 0, excess ); + } + + // Return only captures needed by the pseudo filter method (type and argument) + return match.slice( 0, 3 ); + } + }, + + filter: { + + "TAG": function( nodeNameSelector ) { + var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase(); + return nodeNameSelector === "*" ? + function() { + return true; + } : + function( elem ) { + return elem.nodeName && elem.nodeName.toLowerCase() === nodeName; + }; + }, + + "CLASS": function( className ) { + var pattern = classCache[ className + " " ]; + + return pattern || + ( pattern = new RegExp( "(^|" + whitespace + + ")" + className + "(" + whitespace + "|$)" ) ) && classCache( + className, function( elem ) { + return pattern.test( + typeof elem.className === "string" && elem.className || + typeof elem.getAttribute !== "undefined" && + elem.getAttribute( "class" ) || + "" + ); + } ); + }, + + "ATTR": function( name, operator, check ) { + return function( elem ) { + var result = Sizzle.attr( elem, name ); + + if ( result == null ) { + return operator === "!="; + } + if ( !operator ) { + return true; + } + + result += ""; + + /* eslint-disable max-len */ + + return operator === "=" ? result === check : + operator === "!=" ? result !== check : + operator === "^=" ? check && result.indexOf( check ) === 0 : + operator === "*=" ? check && result.indexOf( check ) > -1 : + operator === "$=" ? check && result.slice( -check.length ) === check : + operator === "~=" ? ( " " + result.replace( rwhitespace, " " ) + " " ).indexOf( check ) > -1 : + operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" : + false; + /* eslint-enable max-len */ + + }; + }, + + "CHILD": function( type, what, _argument, first, last ) { + var simple = type.slice( 0, 3 ) !== "nth", + forward = type.slice( -4 ) !== "last", + ofType = what === "of-type"; + + return first === 1 && last === 0 ? + + // Shortcut for :nth-*(n) + function( elem ) { + return !!elem.parentNode; + } : + + function( elem, _context, xml ) { + var cache, uniqueCache, outerCache, node, nodeIndex, start, + dir = simple !== forward ? "nextSibling" : "previousSibling", + parent = elem.parentNode, + name = ofType && elem.nodeName.toLowerCase(), + useCache = !xml && !ofType, + diff = false; + + if ( parent ) { + + // :(first|last|only)-(child|of-type) + if ( simple ) { + while ( dir ) { + node = elem; + while ( ( node = node[ dir ] ) ) { + if ( ofType ? + node.nodeName.toLowerCase() === name : + node.nodeType === 1 ) { + + return false; + } + } + + // Reverse direction for :only-* (if we haven't yet done so) + start = dir = type === "only" && !start && "nextSibling"; + } + return true; + } + + start = [ forward ? parent.firstChild : parent.lastChild ]; + + // non-xml :nth-child(...) stores cache data on `parent` + if ( forward && useCache ) { + + // Seek `elem` from a previously-cached index + + // ...in a gzip-friendly way + node = parent; + outerCache = node[ expando ] || ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + cache = uniqueCache[ type ] || []; + nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ]; + diff = nodeIndex && cache[ 2 ]; + node = nodeIndex && parent.childNodes[ nodeIndex ]; + + while ( ( node = ++nodeIndex && node && node[ dir ] || + + // Fallback to seeking `elem` from the start + ( diff = nodeIndex = 0 ) || start.pop() ) ) { + + // When found, cache indexes on `parent` and break + if ( node.nodeType === 1 && ++diff && node === elem ) { + uniqueCache[ type ] = [ dirruns, nodeIndex, diff ]; + break; + } + } + + } else { + + // Use previously-cached element index if available + if ( useCache ) { + + // ...in a gzip-friendly way + node = elem; + outerCache = node[ expando ] || ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + cache = uniqueCache[ type ] || []; + nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ]; + diff = nodeIndex; + } + + // xml :nth-child(...) + // or :nth-last-child(...) or :nth(-last)?-of-type(...) + if ( diff === false ) { + + // Use the same loop as above to seek `elem` from the start + while ( ( node = ++nodeIndex && node && node[ dir ] || + ( diff = nodeIndex = 0 ) || start.pop() ) ) { + + if ( ( ofType ? + node.nodeName.toLowerCase() === name : + node.nodeType === 1 ) && + ++diff ) { + + // Cache the index of each encountered element + if ( useCache ) { + outerCache = node[ expando ] || + ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + uniqueCache[ type ] = [ dirruns, diff ]; + } + + if ( node === elem ) { + break; + } + } + } + } + } + + // Incorporate the offset, then check against cycle size + diff -= last; + return diff === first || ( diff % first === 0 && diff / first >= 0 ); + } + }; + }, + + "PSEUDO": function( pseudo, argument ) { + + // pseudo-class names are case-insensitive + // http://www.w3.org/TR/selectors/#pseudo-classes + // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters + // Remember that setFilters inherits from pseudos + var args, + fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] || + Sizzle.error( "unsupported pseudo: " + pseudo ); + + // The user may use createPseudo to indicate that + // arguments are needed to create the filter function + // just as Sizzle does + if ( fn[ expando ] ) { + return fn( argument ); + } + + // But maintain support for old signatures + if ( fn.length > 1 ) { + args = [ pseudo, pseudo, "", argument ]; + return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ? + markFunction( function( seed, matches ) { + var idx, + matched = fn( seed, argument ), + i = matched.length; + while ( i-- ) { + idx = indexOf( seed, matched[ i ] ); + seed[ idx ] = !( matches[ idx ] = matched[ i ] ); + } + } ) : + function( elem ) { + return fn( elem, 0, args ); + }; + } + + return fn; + } + }, + + pseudos: { + + // Potentially complex pseudos + "not": markFunction( function( selector ) { + + // Trim the selector passed to compile + // to avoid treating leading and trailing + // spaces as combinators + var input = [], + results = [], + matcher = compile( selector.replace( rtrim, "$1" ) ); + + return matcher[ expando ] ? + markFunction( function( seed, matches, _context, xml ) { + var elem, + unmatched = matcher( seed, null, xml, [] ), + i = seed.length; + + // Match elements unmatched by `matcher` + while ( i-- ) { + if ( ( elem = unmatched[ i ] ) ) { + seed[ i ] = !( matches[ i ] = elem ); + } + } + } ) : + function( elem, _context, xml ) { + input[ 0 ] = elem; + matcher( input, null, xml, results ); + + // Don't keep the element (issue #299) + input[ 0 ] = null; + return !results.pop(); + }; + } ), + + "has": markFunction( function( selector ) { + return function( elem ) { + return Sizzle( selector, elem ).length > 0; + }; + } ), + + "contains": markFunction( function( text ) { + text = text.replace( runescape, funescape ); + return function( elem ) { + return ( elem.textContent || getText( elem ) ).indexOf( text ) > -1; + }; + } ), + + // "Whether an element is represented by a :lang() selector + // is based solely on the element's language value + // being equal to the identifier C, + // or beginning with the identifier C immediately followed by "-". + // The matching of C against the element's language value is performed case-insensitively. + // The identifier C does not have to be a valid language name." + // http://www.w3.org/TR/selectors/#lang-pseudo + "lang": markFunction( function( lang ) { + + // lang value must be a valid identifier + if ( !ridentifier.test( lang || "" ) ) { + Sizzle.error( "unsupported lang: " + lang ); + } + lang = lang.replace( runescape, funescape ).toLowerCase(); + return function( elem ) { + var elemLang; + do { + if ( ( elemLang = documentIsHTML ? + elem.lang : + elem.getAttribute( "xml:lang" ) || elem.getAttribute( "lang" ) ) ) { + + elemLang = elemLang.toLowerCase(); + return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0; + } + } while ( ( elem = elem.parentNode ) && elem.nodeType === 1 ); + return false; + }; + } ), + + // Miscellaneous + "target": function( elem ) { + var hash = window.location && window.location.hash; + return hash && hash.slice( 1 ) === elem.id; + }, + + "root": function( elem ) { + return elem === docElem; + }, + + "focus": function( elem ) { + return elem === document.activeElement && + ( !document.hasFocus || document.hasFocus() ) && + !!( elem.type || elem.href || ~elem.tabIndex ); + }, + + // Boolean properties + "enabled": createDisabledPseudo( false ), + "disabled": createDisabledPseudo( true ), + + "checked": function( elem ) { + + // In CSS3, :checked should return both checked and selected elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + var nodeName = elem.nodeName.toLowerCase(); + return ( nodeName === "input" && !!elem.checked ) || + ( nodeName === "option" && !!elem.selected ); + }, + + "selected": function( elem ) { + + // Accessing this property makes selected-by-default + // options in Safari work properly + if ( elem.parentNode ) { + // eslint-disable-next-line no-unused-expressions + elem.parentNode.selectedIndex; + } + + return elem.selected === true; + }, + + // Contents + "empty": function( elem ) { + + // http://www.w3.org/TR/selectors/#empty-pseudo + // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5), + // but not by others (comment: 8; processing instruction: 7; etc.) + // nodeType < 6 works because attributes (2) do not appear as children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + if ( elem.nodeType < 6 ) { + return false; + } + } + return true; + }, + + "parent": function( elem ) { + return !Expr.pseudos[ "empty" ]( elem ); + }, + + // Element/input types + "header": function( elem ) { + return rheader.test( elem.nodeName ); + }, + + "input": function( elem ) { + return rinputs.test( elem.nodeName ); + }, + + "button": function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === "button" || name === "button"; + }, + + "text": function( elem ) { + var attr; + return elem.nodeName.toLowerCase() === "input" && + elem.type === "text" && + + // Support: IE<8 + // New HTML5 attribute values (e.g., "search") appear with elem.type === "text" + ( ( attr = elem.getAttribute( "type" ) ) == null || + attr.toLowerCase() === "text" ); + }, + + // Position-in-collection + "first": createPositionalPseudo( function() { + return [ 0 ]; + } ), + + "last": createPositionalPseudo( function( _matchIndexes, length ) { + return [ length - 1 ]; + } ), + + "eq": createPositionalPseudo( function( _matchIndexes, length, argument ) { + return [ argument < 0 ? argument + length : argument ]; + } ), + + "even": createPositionalPseudo( function( matchIndexes, length ) { + var i = 0; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "odd": createPositionalPseudo( function( matchIndexes, length ) { + var i = 1; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "lt": createPositionalPseudo( function( matchIndexes, length, argument ) { + var i = argument < 0 ? + argument + length : + argument > length ? + length : + argument; + for ( ; --i >= 0; ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "gt": createPositionalPseudo( function( matchIndexes, length, argument ) { + var i = argument < 0 ? argument + length : argument; + for ( ; ++i < length; ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ) + } +}; + +Expr.pseudos[ "nth" ] = Expr.pseudos[ "eq" ]; + +// Add button/input type pseudos +for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) { + Expr.pseudos[ i ] = createInputPseudo( i ); +} +for ( i in { submit: true, reset: true } ) { + Expr.pseudos[ i ] = createButtonPseudo( i ); +} + +// Easy API for creating new setFilters +function setFilters() {} +setFilters.prototype = Expr.filters = Expr.pseudos; +Expr.setFilters = new setFilters(); + +tokenize = Sizzle.tokenize = function( selector, parseOnly ) { + var matched, match, tokens, type, + soFar, groups, preFilters, + cached = tokenCache[ selector + " " ]; + + if ( cached ) { + return parseOnly ? 0 : cached.slice( 0 ); + } + + soFar = selector; + groups = []; + preFilters = Expr.preFilter; + + while ( soFar ) { + + // Comma and first run + if ( !matched || ( match = rcomma.exec( soFar ) ) ) { + if ( match ) { + + // Don't consume trailing commas as valid + soFar = soFar.slice( match[ 0 ].length ) || soFar; + } + groups.push( ( tokens = [] ) ); + } + + matched = false; + + // Combinators + if ( ( match = rcombinators.exec( soFar ) ) ) { + matched = match.shift(); + tokens.push( { + value: matched, + + // Cast descendant combinators to space + type: match[ 0 ].replace( rtrim, " " ) + } ); + soFar = soFar.slice( matched.length ); + } + + // Filters + for ( type in Expr.filter ) { + if ( ( match = matchExpr[ type ].exec( soFar ) ) && ( !preFilters[ type ] || + ( match = preFilters[ type ]( match ) ) ) ) { + matched = match.shift(); + tokens.push( { + value: matched, + type: type, + matches: match + } ); + soFar = soFar.slice( matched.length ); + } + } + + if ( !matched ) { + break; + } + } + + // Return the length of the invalid excess + // if we're just parsing + // Otherwise, throw an error or return tokens + return parseOnly ? + soFar.length : + soFar ? + Sizzle.error( selector ) : + + // Cache the tokens + tokenCache( selector, groups ).slice( 0 ); +}; + +function toSelector( tokens ) { + var i = 0, + len = tokens.length, + selector = ""; + for ( ; i < len; i++ ) { + selector += tokens[ i ].value; + } + return selector; +} + +function addCombinator( matcher, combinator, base ) { + var dir = combinator.dir, + skip = combinator.next, + key = skip || dir, + checkNonElements = base && key === "parentNode", + doneName = done++; + + return combinator.first ? + + // Check against closest ancestor/preceding element + function( elem, context, xml ) { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + return matcher( elem, context, xml ); + } + } + return false; + } : + + // Check against all ancestor/preceding elements + function( elem, context, xml ) { + var oldCache, uniqueCache, outerCache, + newCache = [ dirruns, doneName ]; + + // We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching + if ( xml ) { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + if ( matcher( elem, context, xml ) ) { + return true; + } + } + } + } else { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + outerCache = elem[ expando ] || ( elem[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ elem.uniqueID ] || + ( outerCache[ elem.uniqueID ] = {} ); + + if ( skip && skip === elem.nodeName.toLowerCase() ) { + elem = elem[ dir ] || elem; + } else if ( ( oldCache = uniqueCache[ key ] ) && + oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) { + + // Assign to newCache so results back-propagate to previous elements + return ( newCache[ 2 ] = oldCache[ 2 ] ); + } else { + + // Reuse newcache so results back-propagate to previous elements + uniqueCache[ key ] = newCache; + + // A match means we're done; a fail means we have to keep checking + if ( ( newCache[ 2 ] = matcher( elem, context, xml ) ) ) { + return true; + } + } + } + } + } + return false; + }; +} + +function elementMatcher( matchers ) { + return matchers.length > 1 ? + function( elem, context, xml ) { + var i = matchers.length; + while ( i-- ) { + if ( !matchers[ i ]( elem, context, xml ) ) { + return false; + } + } + return true; + } : + matchers[ 0 ]; +} + +function multipleContexts( selector, contexts, results ) { + var i = 0, + len = contexts.length; + for ( ; i < len; i++ ) { + Sizzle( selector, contexts[ i ], results ); + } + return results; +} + +function condense( unmatched, map, filter, context, xml ) { + var elem, + newUnmatched = [], + i = 0, + len = unmatched.length, + mapped = map != null; + + for ( ; i < len; i++ ) { + if ( ( elem = unmatched[ i ] ) ) { + if ( !filter || filter( elem, context, xml ) ) { + newUnmatched.push( elem ); + if ( mapped ) { + map.push( i ); + } + } + } + } + + return newUnmatched; +} + +function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) { + if ( postFilter && !postFilter[ expando ] ) { + postFilter = setMatcher( postFilter ); + } + if ( postFinder && !postFinder[ expando ] ) { + postFinder = setMatcher( postFinder, postSelector ); + } + return markFunction( function( seed, results, context, xml ) { + var temp, i, elem, + preMap = [], + postMap = [], + preexisting = results.length, + + // Get initial elements from seed or context + elems = seed || multipleContexts( + selector || "*", + context.nodeType ? [ context ] : context, + [] + ), + + // Prefilter to get matcher input, preserving a map for seed-results synchronization + matcherIn = preFilter && ( seed || !selector ) ? + condense( elems, preMap, preFilter, context, xml ) : + elems, + + matcherOut = matcher ? + + // If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results, + postFinder || ( seed ? preFilter : preexisting || postFilter ) ? + + // ...intermediate processing is necessary + [] : + + // ...otherwise use results directly + results : + matcherIn; + + // Find primary matches + if ( matcher ) { + matcher( matcherIn, matcherOut, context, xml ); + } + + // Apply postFilter + if ( postFilter ) { + temp = condense( matcherOut, postMap ); + postFilter( temp, [], context, xml ); + + // Un-match failing elements by moving them back to matcherIn + i = temp.length; + while ( i-- ) { + if ( ( elem = temp[ i ] ) ) { + matcherOut[ postMap[ i ] ] = !( matcherIn[ postMap[ i ] ] = elem ); + } + } + } + + if ( seed ) { + if ( postFinder || preFilter ) { + if ( postFinder ) { + + // Get the final matcherOut by condensing this intermediate into postFinder contexts + temp = []; + i = matcherOut.length; + while ( i-- ) { + if ( ( elem = matcherOut[ i ] ) ) { + + // Restore matcherIn since elem is not yet a final match + temp.push( ( matcherIn[ i ] = elem ) ); + } + } + postFinder( null, ( matcherOut = [] ), temp, xml ); + } + + // Move matched elements from seed to results to keep them synchronized + i = matcherOut.length; + while ( i-- ) { + if ( ( elem = matcherOut[ i ] ) && + ( temp = postFinder ? indexOf( seed, elem ) : preMap[ i ] ) > -1 ) { + + seed[ temp ] = !( results[ temp ] = elem ); + } + } + } + + // Add elements to results, through postFinder if defined + } else { + matcherOut = condense( + matcherOut === results ? + matcherOut.splice( preexisting, matcherOut.length ) : + matcherOut + ); + if ( postFinder ) { + postFinder( null, results, matcherOut, xml ); + } else { + push.apply( results, matcherOut ); + } + } + } ); +} + +function matcherFromTokens( tokens ) { + var checkContext, matcher, j, + len = tokens.length, + leadingRelative = Expr.relative[ tokens[ 0 ].type ], + implicitRelative = leadingRelative || Expr.relative[ " " ], + i = leadingRelative ? 1 : 0, + + // The foundational matcher ensures that elements are reachable from top-level context(s) + matchContext = addCombinator( function( elem ) { + return elem === checkContext; + }, implicitRelative, true ), + matchAnyContext = addCombinator( function( elem ) { + return indexOf( checkContext, elem ) > -1; + }, implicitRelative, true ), + matchers = [ function( elem, context, xml ) { + var ret = ( !leadingRelative && ( xml || context !== outermostContext ) ) || ( + ( checkContext = context ).nodeType ? + matchContext( elem, context, xml ) : + matchAnyContext( elem, context, xml ) ); + + // Avoid hanging onto element (issue #299) + checkContext = null; + return ret; + } ]; + + for ( ; i < len; i++ ) { + if ( ( matcher = Expr.relative[ tokens[ i ].type ] ) ) { + matchers = [ addCombinator( elementMatcher( matchers ), matcher ) ]; + } else { + matcher = Expr.filter[ tokens[ i ].type ].apply( null, tokens[ i ].matches ); + + // Return special upon seeing a positional matcher + if ( matcher[ expando ] ) { + + // Find the next relative operator (if any) for proper handling + j = ++i; + for ( ; j < len; j++ ) { + if ( Expr.relative[ tokens[ j ].type ] ) { + break; + } + } + return setMatcher( + i > 1 && elementMatcher( matchers ), + i > 1 && toSelector( + + // If the preceding token was a descendant combinator, insert an implicit any-element `*` + tokens + .slice( 0, i - 1 ) + .concat( { value: tokens[ i - 2 ].type === " " ? "*" : "" } ) + ).replace( rtrim, "$1" ), + matcher, + i < j && matcherFromTokens( tokens.slice( i, j ) ), + j < len && matcherFromTokens( ( tokens = tokens.slice( j ) ) ), + j < len && toSelector( tokens ) + ); + } + matchers.push( matcher ); + } + } + + return elementMatcher( matchers ); +} + +function matcherFromGroupMatchers( elementMatchers, setMatchers ) { + var bySet = setMatchers.length > 0, + byElement = elementMatchers.length > 0, + superMatcher = function( seed, context, xml, results, outermost ) { + var elem, j, matcher, + matchedCount = 0, + i = "0", + unmatched = seed && [], + setMatched = [], + contextBackup = outermostContext, + + // We must always have either seed elements or outermost context + elems = seed || byElement && Expr.find[ "TAG" ]( "*", outermost ), + + // Use integer dirruns iff this is the outermost matcher + dirrunsUnique = ( dirruns += contextBackup == null ? 1 : Math.random() || 0.1 ), + len = elems.length; + + if ( outermost ) { + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + outermostContext = context == document || context || outermost; + } + + // Add elements passing elementMatchers directly to results + // Support: IE<9, Safari + // Tolerate NodeList properties (IE: "length"; Safari: ) matching elements by id + for ( ; i !== len && ( elem = elems[ i ] ) != null; i++ ) { + if ( byElement && elem ) { + j = 0; + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( !context && elem.ownerDocument != document ) { + setDocument( elem ); + xml = !documentIsHTML; + } + while ( ( matcher = elementMatchers[ j++ ] ) ) { + if ( matcher( elem, context || document, xml ) ) { + results.push( elem ); + break; + } + } + if ( outermost ) { + dirruns = dirrunsUnique; + } + } + + // Track unmatched elements for set filters + if ( bySet ) { + + // They will have gone through all possible matchers + if ( ( elem = !matcher && elem ) ) { + matchedCount--; + } + + // Lengthen the array for every element, matched or not + if ( seed ) { + unmatched.push( elem ); + } + } + } + + // `i` is now the count of elements visited above, and adding it to `matchedCount` + // makes the latter nonnegative. + matchedCount += i; + + // Apply set filters to unmatched elements + // NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount` + // equals `i`), unless we didn't visit _any_ elements in the above loop because we have + // no element matchers and no seed. + // Incrementing an initially-string "0" `i` allows `i` to remain a string only in that + // case, which will result in a "00" `matchedCount` that differs from `i` but is also + // numerically zero. + if ( bySet && i !== matchedCount ) { + j = 0; + while ( ( matcher = setMatchers[ j++ ] ) ) { + matcher( unmatched, setMatched, context, xml ); + } + + if ( seed ) { + + // Reintegrate element matches to eliminate the need for sorting + if ( matchedCount > 0 ) { + while ( i-- ) { + if ( !( unmatched[ i ] || setMatched[ i ] ) ) { + setMatched[ i ] = pop.call( results ); + } + } + } + + // Discard index placeholder values to get only actual matches + setMatched = condense( setMatched ); + } + + // Add matches to results + push.apply( results, setMatched ); + + // Seedless set matches succeeding multiple successful matchers stipulate sorting + if ( outermost && !seed && setMatched.length > 0 && + ( matchedCount + setMatchers.length ) > 1 ) { + + Sizzle.uniqueSort( results ); + } + } + + // Override manipulation of globals by nested matchers + if ( outermost ) { + dirruns = dirrunsUnique; + outermostContext = contextBackup; + } + + return unmatched; + }; + + return bySet ? + markFunction( superMatcher ) : + superMatcher; +} + +compile = Sizzle.compile = function( selector, match /* Internal Use Only */ ) { + var i, + setMatchers = [], + elementMatchers = [], + cached = compilerCache[ selector + " " ]; + + if ( !cached ) { + + // Generate a function of recursive functions that can be used to check each element + if ( !match ) { + match = tokenize( selector ); + } + i = match.length; + while ( i-- ) { + cached = matcherFromTokens( match[ i ] ); + if ( cached[ expando ] ) { + setMatchers.push( cached ); + } else { + elementMatchers.push( cached ); + } + } + + // Cache the compiled function + cached = compilerCache( + selector, + matcherFromGroupMatchers( elementMatchers, setMatchers ) + ); + + // Save selector and tokenization + cached.selector = selector; + } + return cached; +}; + +/** + * A low-level selection function that works with Sizzle's compiled + * selector functions + * @param {String|Function} selector A selector or a pre-compiled + * selector function built with Sizzle.compile + * @param {Element} context + * @param {Array} [results] + * @param {Array} [seed] A set of elements to match against + */ +select = Sizzle.select = function( selector, context, results, seed ) { + var i, tokens, token, type, find, + compiled = typeof selector === "function" && selector, + match = !seed && tokenize( ( selector = compiled.selector || selector ) ); + + results = results || []; + + // Try to minimize operations if there is only one selector in the list and no seed + // (the latter of which guarantees us context) + if ( match.length === 1 ) { + + // Reduce context if the leading compound selector is an ID + tokens = match[ 0 ] = match[ 0 ].slice( 0 ); + if ( tokens.length > 2 && ( token = tokens[ 0 ] ).type === "ID" && + context.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[ 1 ].type ] ) { + + context = ( Expr.find[ "ID" ]( token.matches[ 0 ] + .replace( runescape, funescape ), context ) || [] )[ 0 ]; + if ( !context ) { + return results; + + // Precompiled matchers will still verify ancestry, so step up a level + } else if ( compiled ) { + context = context.parentNode; + } + + selector = selector.slice( tokens.shift().value.length ); + } + + // Fetch a seed set for right-to-left matching + i = matchExpr[ "needsContext" ].test( selector ) ? 0 : tokens.length; + while ( i-- ) { + token = tokens[ i ]; + + // Abort if we hit a combinator + if ( Expr.relative[ ( type = token.type ) ] ) { + break; + } + if ( ( find = Expr.find[ type ] ) ) { + + // Search, expanding context for leading sibling combinators + if ( ( seed = find( + token.matches[ 0 ].replace( runescape, funescape ), + rsibling.test( tokens[ 0 ].type ) && testContext( context.parentNode ) || + context + ) ) ) { + + // If seed is empty or no tokens remain, we can return early + tokens.splice( i, 1 ); + selector = seed.length && toSelector( tokens ); + if ( !selector ) { + push.apply( results, seed ); + return results; + } + + break; + } + } + } + } + + // Compile and execute a filtering function if one is not provided + // Provide `match` to avoid retokenization if we modified the selector above + ( compiled || compile( selector, match ) )( + seed, + context, + !documentIsHTML, + results, + !context || rsibling.test( selector ) && testContext( context.parentNode ) || context + ); + return results; +}; + +// One-time assignments + +// Sort stability +support.sortStable = expando.split( "" ).sort( sortOrder ).join( "" ) === expando; + +// Support: Chrome 14-35+ +// Always assume duplicates if they aren't passed to the comparison function +support.detectDuplicates = !!hasDuplicate; + +// Initialize against the default document +setDocument(); + +// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27) +// Detached nodes confoundingly follow *each other* +support.sortDetached = assert( function( el ) { + + // Should return 1, but returns 4 (following) + return el.compareDocumentPosition( document.createElement( "fieldset" ) ) & 1; +} ); + +// Support: IE<8 +// Prevent attribute/property "interpolation" +// https://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx +if ( !assert( function( el ) { + el.innerHTML = ""; + return el.firstChild.getAttribute( "href" ) === "#"; +} ) ) { + addHandle( "type|href|height|width", function( elem, name, isXML ) { + if ( !isXML ) { + return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 ); + } + } ); +} + +// Support: IE<9 +// Use defaultValue in place of getAttribute("value") +if ( !support.attributes || !assert( function( el ) { + el.innerHTML = ""; + el.firstChild.setAttribute( "value", "" ); + return el.firstChild.getAttribute( "value" ) === ""; +} ) ) { + addHandle( "value", function( elem, _name, isXML ) { + if ( !isXML && elem.nodeName.toLowerCase() === "input" ) { + return elem.defaultValue; + } + } ); +} + +// Support: IE<9 +// Use getAttributeNode to fetch booleans when getAttribute lies +if ( !assert( function( el ) { + return el.getAttribute( "disabled" ) == null; +} ) ) { + addHandle( booleans, function( elem, name, isXML ) { + var val; + if ( !isXML ) { + return elem[ name ] === true ? name.toLowerCase() : + ( val = elem.getAttributeNode( name ) ) && val.specified ? + val.value : + null; + } + } ); +} + +return Sizzle; + +} )( window ); + + + +jQuery.find = Sizzle; +jQuery.expr = Sizzle.selectors; + +// Deprecated +jQuery.expr[ ":" ] = jQuery.expr.pseudos; +jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort; +jQuery.text = Sizzle.getText; +jQuery.isXMLDoc = Sizzle.isXML; +jQuery.contains = Sizzle.contains; +jQuery.escapeSelector = Sizzle.escape; + + + + +var dir = function( elem, dir, until ) { + var matched = [], + truncate = until !== undefined; + + while ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) { + if ( elem.nodeType === 1 ) { + if ( truncate && jQuery( elem ).is( until ) ) { + break; + } + matched.push( elem ); + } + } + return matched; +}; + + +var siblings = function( n, elem ) { + var matched = []; + + for ( ; n; n = n.nextSibling ) { + if ( n.nodeType === 1 && n !== elem ) { + matched.push( n ); + } + } + + return matched; +}; + + +var rneedsContext = jQuery.expr.match.needsContext; + + + +function nodeName( elem, name ) { + + return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase(); + +} +var rsingleTag = ( /^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i ); + + + +// Implement the identical functionality for filter and not +function winnow( elements, qualifier, not ) { + if ( isFunction( qualifier ) ) { + return jQuery.grep( elements, function( elem, i ) { + return !!qualifier.call( elem, i, elem ) !== not; + } ); + } + + // Single element + if ( qualifier.nodeType ) { + return jQuery.grep( elements, function( elem ) { + return ( elem === qualifier ) !== not; + } ); + } + + // Arraylike of elements (jQuery, arguments, Array) + if ( typeof qualifier !== "string" ) { + return jQuery.grep( elements, function( elem ) { + return ( indexOf.call( qualifier, elem ) > -1 ) !== not; + } ); + } + + // Filtered directly for both simple and complex selectors + return jQuery.filter( qualifier, elements, not ); +} + +jQuery.filter = function( expr, elems, not ) { + var elem = elems[ 0 ]; + + if ( not ) { + expr = ":not(" + expr + ")"; + } + + if ( elems.length === 1 && elem.nodeType === 1 ) { + return jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : []; + } + + return jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) { + return elem.nodeType === 1; + } ) ); +}; + +jQuery.fn.extend( { + find: function( selector ) { + var i, ret, + len = this.length, + self = this; + + if ( typeof selector !== "string" ) { + return this.pushStack( jQuery( selector ).filter( function() { + for ( i = 0; i < len; i++ ) { + if ( jQuery.contains( self[ i ], this ) ) { + return true; + } + } + } ) ); + } + + ret = this.pushStack( [] ); + + for ( i = 0; i < len; i++ ) { + jQuery.find( selector, self[ i ], ret ); + } + + return len > 1 ? jQuery.uniqueSort( ret ) : ret; + }, + filter: function( selector ) { + return this.pushStack( winnow( this, selector || [], false ) ); + }, + not: function( selector ) { + return this.pushStack( winnow( this, selector || [], true ) ); + }, + is: function( selector ) { + return !!winnow( + this, + + // If this is a positional/relative selector, check membership in the returned set + // so $("p:first").is("p:last") won't return true for a doc with two "p". + typeof selector === "string" && rneedsContext.test( selector ) ? + jQuery( selector ) : + selector || [], + false + ).length; + } +} ); + + +// Initialize a jQuery object + + +// A central reference to the root jQuery(document) +var rootjQuery, + + // A simple way to check for HTML strings + // Prioritize #id over to avoid XSS via location.hash (#9521) + // Strict HTML recognition (#11290: must start with <) + // Shortcut simple #id case for speed + rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/, + + init = jQuery.fn.init = function( selector, context, root ) { + var match, elem; + + // HANDLE: $(""), $(null), $(undefined), $(false) + if ( !selector ) { + return this; + } + + // Method init() accepts an alternate rootjQuery + // so migrate can support jQuery.sub (gh-2101) + root = root || rootjQuery; + + // Handle HTML strings + if ( typeof selector === "string" ) { + if ( selector[ 0 ] === "<" && + selector[ selector.length - 1 ] === ">" && + selector.length >= 3 ) { + + // Assume that strings that start and end with <> are HTML and skip the regex check + match = [ null, selector, null ]; + + } else { + match = rquickExpr.exec( selector ); + } + + // Match html or make sure no context is specified for #id + if ( match && ( match[ 1 ] || !context ) ) { + + // HANDLE: $(html) -> $(array) + if ( match[ 1 ] ) { + context = context instanceof jQuery ? context[ 0 ] : context; + + // Option to run scripts is true for back-compat + // Intentionally let the error be thrown if parseHTML is not present + jQuery.merge( this, jQuery.parseHTML( + match[ 1 ], + context && context.nodeType ? context.ownerDocument || context : document, + true + ) ); + + // HANDLE: $(html, props) + if ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) { + for ( match in context ) { + + // Properties of context are called as methods if possible + if ( isFunction( this[ match ] ) ) { + this[ match ]( context[ match ] ); + + // ...and otherwise set as attributes + } else { + this.attr( match, context[ match ] ); + } + } + } + + return this; + + // HANDLE: $(#id) + } else { + elem = document.getElementById( match[ 2 ] ); + + if ( elem ) { + + // Inject the element directly into the jQuery object + this[ 0 ] = elem; + this.length = 1; + } + return this; + } + + // HANDLE: $(expr, $(...)) + } else if ( !context || context.jquery ) { + return ( context || root ).find( selector ); + + // HANDLE: $(expr, context) + // (which is just equivalent to: $(context).find(expr) + } else { + return this.constructor( context ).find( selector ); + } + + // HANDLE: $(DOMElement) + } else if ( selector.nodeType ) { + this[ 0 ] = selector; + this.length = 1; + return this; + + // HANDLE: $(function) + // Shortcut for document ready + } else if ( isFunction( selector ) ) { + return root.ready !== undefined ? + root.ready( selector ) : + + // Execute immediately if ready is not present + selector( jQuery ); + } + + return jQuery.makeArray( selector, this ); + }; + +// Give the init function the jQuery prototype for later instantiation +init.prototype = jQuery.fn; + +// Initialize central reference +rootjQuery = jQuery( document ); + + +var rparentsprev = /^(?:parents|prev(?:Until|All))/, + + // Methods guaranteed to produce a unique set when starting from a unique set + guaranteedUnique = { + children: true, + contents: true, + next: true, + prev: true + }; + +jQuery.fn.extend( { + has: function( target ) { + var targets = jQuery( target, this ), + l = targets.length; + + return this.filter( function() { + var i = 0; + for ( ; i < l; i++ ) { + if ( jQuery.contains( this, targets[ i ] ) ) { + return true; + } + } + } ); + }, + + closest: function( selectors, context ) { + var cur, + i = 0, + l = this.length, + matched = [], + targets = typeof selectors !== "string" && jQuery( selectors ); + + // Positional selectors never match, since there's no _selection_ context + if ( !rneedsContext.test( selectors ) ) { + for ( ; i < l; i++ ) { + for ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) { + + // Always skip document fragments + if ( cur.nodeType < 11 && ( targets ? + targets.index( cur ) > -1 : + + // Don't pass non-elements to Sizzle + cur.nodeType === 1 && + jQuery.find.matchesSelector( cur, selectors ) ) ) { + + matched.push( cur ); + break; + } + } + } + } + + return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched ); + }, + + // Determine the position of an element within the set + index: function( elem ) { + + // No argument, return index in parent + if ( !elem ) { + return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1; + } + + // Index in selector + if ( typeof elem === "string" ) { + return indexOf.call( jQuery( elem ), this[ 0 ] ); + } + + // Locate the position of the desired element + return indexOf.call( this, + + // If it receives a jQuery object, the first element is used + elem.jquery ? elem[ 0 ] : elem + ); + }, + + add: function( selector, context ) { + return this.pushStack( + jQuery.uniqueSort( + jQuery.merge( this.get(), jQuery( selector, context ) ) + ) + ); + }, + + addBack: function( selector ) { + return this.add( selector == null ? + this.prevObject : this.prevObject.filter( selector ) + ); + } +} ); + +function sibling( cur, dir ) { + while ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {} + return cur; +} + +jQuery.each( { + parent: function( elem ) { + var parent = elem.parentNode; + return parent && parent.nodeType !== 11 ? parent : null; + }, + parents: function( elem ) { + return dir( elem, "parentNode" ); + }, + parentsUntil: function( elem, _i, until ) { + return dir( elem, "parentNode", until ); + }, + next: function( elem ) { + return sibling( elem, "nextSibling" ); + }, + prev: function( elem ) { + return sibling( elem, "previousSibling" ); + }, + nextAll: function( elem ) { + return dir( elem, "nextSibling" ); + }, + prevAll: function( elem ) { + return dir( elem, "previousSibling" ); + }, + nextUntil: function( elem, _i, until ) { + return dir( elem, "nextSibling", until ); + }, + prevUntil: function( elem, _i, until ) { + return dir( elem, "previousSibling", until ); + }, + siblings: function( elem ) { + return siblings( ( elem.parentNode || {} ).firstChild, elem ); + }, + children: function( elem ) { + return siblings( elem.firstChild ); + }, + contents: function( elem ) { + if ( elem.contentDocument != null && + + // Support: IE 11+ + // elements with no `data` attribute has an object + // `contentDocument` with a `null` prototype. + getProto( elem.contentDocument ) ) { + + return elem.contentDocument; + } + + // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only + // Treat the template element as a regular one in browsers that + // don't support it. + if ( nodeName( elem, "template" ) ) { + elem = elem.content || elem; + } + + return jQuery.merge( [], elem.childNodes ); + } +}, function( name, fn ) { + jQuery.fn[ name ] = function( until, selector ) { + var matched = jQuery.map( this, fn, until ); + + if ( name.slice( -5 ) !== "Until" ) { + selector = until; + } + + if ( selector && typeof selector === "string" ) { + matched = jQuery.filter( selector, matched ); + } + + if ( this.length > 1 ) { + + // Remove duplicates + if ( !guaranteedUnique[ name ] ) { + jQuery.uniqueSort( matched ); + } + + // Reverse order for parents* and prev-derivatives + if ( rparentsprev.test( name ) ) { + matched.reverse(); + } + } + + return this.pushStack( matched ); + }; +} ); +var rnothtmlwhite = ( /[^\x20\t\r\n\f]+/g ); + + + +// Convert String-formatted options into Object-formatted ones +function createOptions( options ) { + var object = {}; + jQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) { + object[ flag ] = true; + } ); + return object; +} + +/* + * Create a callback list using the following parameters: + * + * options: an optional list of space-separated options that will change how + * the callback list behaves or a more traditional option object + * + * By default a callback list will act like an event callback list and can be + * "fired" multiple times. + * + * Possible options: + * + * once: will ensure the callback list can only be fired once (like a Deferred) + * + * memory: will keep track of previous values and will call any callback added + * after the list has been fired right away with the latest "memorized" + * values (like a Deferred) + * + * unique: will ensure a callback can only be added once (no duplicate in the list) + * + * stopOnFalse: interrupt callings when a callback returns false + * + */ +jQuery.Callbacks = function( options ) { + + // Convert options from String-formatted to Object-formatted if needed + // (we check in cache first) + options = typeof options === "string" ? + createOptions( options ) : + jQuery.extend( {}, options ); + + var // Flag to know if list is currently firing + firing, + + // Last fire value for non-forgettable lists + memory, + + // Flag to know if list was already fired + fired, + + // Flag to prevent firing + locked, + + // Actual callback list + list = [], + + // Queue of execution data for repeatable lists + queue = [], + + // Index of currently firing callback (modified by add/remove as needed) + firingIndex = -1, + + // Fire callbacks + fire = function() { + + // Enforce single-firing + locked = locked || options.once; + + // Execute callbacks for all pending executions, + // respecting firingIndex overrides and runtime changes + fired = firing = true; + for ( ; queue.length; firingIndex = -1 ) { + memory = queue.shift(); + while ( ++firingIndex < list.length ) { + + // Run callback and check for early termination + if ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false && + options.stopOnFalse ) { + + // Jump to end and forget the data so .add doesn't re-fire + firingIndex = list.length; + memory = false; + } + } + } + + // Forget the data if we're done with it + if ( !options.memory ) { + memory = false; + } + + firing = false; + + // Clean up if we're done firing for good + if ( locked ) { + + // Keep an empty list if we have data for future add calls + if ( memory ) { + list = []; + + // Otherwise, this object is spent + } else { + list = ""; + } + } + }, + + // Actual Callbacks object + self = { + + // Add a callback or a collection of callbacks to the list + add: function() { + if ( list ) { + + // If we have memory from a past run, we should fire after adding + if ( memory && !firing ) { + firingIndex = list.length - 1; + queue.push( memory ); + } + + ( function add( args ) { + jQuery.each( args, function( _, arg ) { + if ( isFunction( arg ) ) { + if ( !options.unique || !self.has( arg ) ) { + list.push( arg ); + } + } else if ( arg && arg.length && toType( arg ) !== "string" ) { + + // Inspect recursively + add( arg ); + } + } ); + } )( arguments ); + + if ( memory && !firing ) { + fire(); + } + } + return this; + }, + + // Remove a callback from the list + remove: function() { + jQuery.each( arguments, function( _, arg ) { + var index; + while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) { + list.splice( index, 1 ); + + // Handle firing indexes + if ( index <= firingIndex ) { + firingIndex--; + } + } + } ); + return this; + }, + + // Check if a given callback is in the list. + // If no argument is given, return whether or not list has callbacks attached. + has: function( fn ) { + return fn ? + jQuery.inArray( fn, list ) > -1 : + list.length > 0; + }, + + // Remove all callbacks from the list + empty: function() { + if ( list ) { + list = []; + } + return this; + }, + + // Disable .fire and .add + // Abort any current/pending executions + // Clear all callbacks and values + disable: function() { + locked = queue = []; + list = memory = ""; + return this; + }, + disabled: function() { + return !list; + }, + + // Disable .fire + // Also disable .add unless we have memory (since it would have no effect) + // Abort any pending executions + lock: function() { + locked = queue = []; + if ( !memory && !firing ) { + list = memory = ""; + } + return this; + }, + locked: function() { + return !!locked; + }, + + // Call all callbacks with the given context and arguments + fireWith: function( context, args ) { + if ( !locked ) { + args = args || []; + args = [ context, args.slice ? args.slice() : args ]; + queue.push( args ); + if ( !firing ) { + fire(); + } + } + return this; + }, + + // Call all the callbacks with the given arguments + fire: function() { + self.fireWith( this, arguments ); + return this; + }, + + // To know if the callbacks have already been called at least once + fired: function() { + return !!fired; + } + }; + + return self; +}; + + +function Identity( v ) { + return v; +} +function Thrower( ex ) { + throw ex; +} + +function adoptValue( value, resolve, reject, noValue ) { + var method; + + try { + + // Check for promise aspect first to privilege synchronous behavior + if ( value && isFunction( ( method = value.promise ) ) ) { + method.call( value ).done( resolve ).fail( reject ); + + // Other thenables + } else if ( value && isFunction( ( method = value.then ) ) ) { + method.call( value, resolve, reject ); + + // Other non-thenables + } else { + + // Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer: + // * false: [ value ].slice( 0 ) => resolve( value ) + // * true: [ value ].slice( 1 ) => resolve() + resolve.apply( undefined, [ value ].slice( noValue ) ); + } + + // For Promises/A+, convert exceptions into rejections + // Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in + // Deferred#then to conditionally suppress rejection. + } catch ( value ) { + + // Support: Android 4.0 only + // Strict mode functions invoked without .call/.apply get global-object context + reject.apply( undefined, [ value ] ); + } +} + +jQuery.extend( { + + Deferred: function( func ) { + var tuples = [ + + // action, add listener, callbacks, + // ... .then handlers, argument index, [final state] + [ "notify", "progress", jQuery.Callbacks( "memory" ), + jQuery.Callbacks( "memory" ), 2 ], + [ "resolve", "done", jQuery.Callbacks( "once memory" ), + jQuery.Callbacks( "once memory" ), 0, "resolved" ], + [ "reject", "fail", jQuery.Callbacks( "once memory" ), + jQuery.Callbacks( "once memory" ), 1, "rejected" ] + ], + state = "pending", + promise = { + state: function() { + return state; + }, + always: function() { + deferred.done( arguments ).fail( arguments ); + return this; + }, + "catch": function( fn ) { + return promise.then( null, fn ); + }, + + // Keep pipe for back-compat + pipe: function( /* fnDone, fnFail, fnProgress */ ) { + var fns = arguments; + + return jQuery.Deferred( function( newDefer ) { + jQuery.each( tuples, function( _i, tuple ) { + + // Map tuples (progress, done, fail) to arguments (done, fail, progress) + var fn = isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ]; + + // deferred.progress(function() { bind to newDefer or newDefer.notify }) + // deferred.done(function() { bind to newDefer or newDefer.resolve }) + // deferred.fail(function() { bind to newDefer or newDefer.reject }) + deferred[ tuple[ 1 ] ]( function() { + var returned = fn && fn.apply( this, arguments ); + if ( returned && isFunction( returned.promise ) ) { + returned.promise() + .progress( newDefer.notify ) + .done( newDefer.resolve ) + .fail( newDefer.reject ); + } else { + newDefer[ tuple[ 0 ] + "With" ]( + this, + fn ? [ returned ] : arguments + ); + } + } ); + } ); + fns = null; + } ).promise(); + }, + then: function( onFulfilled, onRejected, onProgress ) { + var maxDepth = 0; + function resolve( depth, deferred, handler, special ) { + return function() { + var that = this, + args = arguments, + mightThrow = function() { + var returned, then; + + // Support: Promises/A+ section 2.3.3.3.3 + // https://promisesaplus.com/#point-59 + // Ignore double-resolution attempts + if ( depth < maxDepth ) { + return; + } + + returned = handler.apply( that, args ); + + // Support: Promises/A+ section 2.3.1 + // https://promisesaplus.com/#point-48 + if ( returned === deferred.promise() ) { + throw new TypeError( "Thenable self-resolution" ); + } + + // Support: Promises/A+ sections 2.3.3.1, 3.5 + // https://promisesaplus.com/#point-54 + // https://promisesaplus.com/#point-75 + // Retrieve `then` only once + then = returned && + + // Support: Promises/A+ section 2.3.4 + // https://promisesaplus.com/#point-64 + // Only check objects and functions for thenability + ( typeof returned === "object" || + typeof returned === "function" ) && + returned.then; + + // Handle a returned thenable + if ( isFunction( then ) ) { + + // Special processors (notify) just wait for resolution + if ( special ) { + then.call( + returned, + resolve( maxDepth, deferred, Identity, special ), + resolve( maxDepth, deferred, Thrower, special ) + ); + + // Normal processors (resolve) also hook into progress + } else { + + // ...and disregard older resolution values + maxDepth++; + + then.call( + returned, + resolve( maxDepth, deferred, Identity, special ), + resolve( maxDepth, deferred, Thrower, special ), + resolve( maxDepth, deferred, Identity, + deferred.notifyWith ) + ); + } + + // Handle all other returned values + } else { + + // Only substitute handlers pass on context + // and multiple values (non-spec behavior) + if ( handler !== Identity ) { + that = undefined; + args = [ returned ]; + } + + // Process the value(s) + // Default process is resolve + ( special || deferred.resolveWith )( that, args ); + } + }, + + // Only normal processors (resolve) catch and reject exceptions + process = special ? + mightThrow : + function() { + try { + mightThrow(); + } catch ( e ) { + + if ( jQuery.Deferred.exceptionHook ) { + jQuery.Deferred.exceptionHook( e, + process.stackTrace ); + } + + // Support: Promises/A+ section 2.3.3.3.4.1 + // https://promisesaplus.com/#point-61 + // Ignore post-resolution exceptions + if ( depth + 1 >= maxDepth ) { + + // Only substitute handlers pass on context + // and multiple values (non-spec behavior) + if ( handler !== Thrower ) { + that = undefined; + args = [ e ]; + } + + deferred.rejectWith( that, args ); + } + } + }; + + // Support: Promises/A+ section 2.3.3.3.1 + // https://promisesaplus.com/#point-57 + // Re-resolve promises immediately to dodge false rejection from + // subsequent errors + if ( depth ) { + process(); + } else { + + // Call an optional hook to record the stack, in case of exception + // since it's otherwise lost when execution goes async + if ( jQuery.Deferred.getStackHook ) { + process.stackTrace = jQuery.Deferred.getStackHook(); + } + window.setTimeout( process ); + } + }; + } + + return jQuery.Deferred( function( newDefer ) { + + // progress_handlers.add( ... ) + tuples[ 0 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onProgress ) ? + onProgress : + Identity, + newDefer.notifyWith + ) + ); + + // fulfilled_handlers.add( ... ) + tuples[ 1 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onFulfilled ) ? + onFulfilled : + Identity + ) + ); + + // rejected_handlers.add( ... ) + tuples[ 2 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onRejected ) ? + onRejected : + Thrower + ) + ); + } ).promise(); + }, + + // Get a promise for this deferred + // If obj is provided, the promise aspect is added to the object + promise: function( obj ) { + return obj != null ? jQuery.extend( obj, promise ) : promise; + } + }, + deferred = {}; + + // Add list-specific methods + jQuery.each( tuples, function( i, tuple ) { + var list = tuple[ 2 ], + stateString = tuple[ 5 ]; + + // promise.progress = list.add + // promise.done = list.add + // promise.fail = list.add + promise[ tuple[ 1 ] ] = list.add; + + // Handle state + if ( stateString ) { + list.add( + function() { + + // state = "resolved" (i.e., fulfilled) + // state = "rejected" + state = stateString; + }, + + // rejected_callbacks.disable + // fulfilled_callbacks.disable + tuples[ 3 - i ][ 2 ].disable, + + // rejected_handlers.disable + // fulfilled_handlers.disable + tuples[ 3 - i ][ 3 ].disable, + + // progress_callbacks.lock + tuples[ 0 ][ 2 ].lock, + + // progress_handlers.lock + tuples[ 0 ][ 3 ].lock + ); + } + + // progress_handlers.fire + // fulfilled_handlers.fire + // rejected_handlers.fire + list.add( tuple[ 3 ].fire ); + + // deferred.notify = function() { deferred.notifyWith(...) } + // deferred.resolve = function() { deferred.resolveWith(...) } + // deferred.reject = function() { deferred.rejectWith(...) } + deferred[ tuple[ 0 ] ] = function() { + deferred[ tuple[ 0 ] + "With" ]( this === deferred ? undefined : this, arguments ); + return this; + }; + + // deferred.notifyWith = list.fireWith + // deferred.resolveWith = list.fireWith + // deferred.rejectWith = list.fireWith + deferred[ tuple[ 0 ] + "With" ] = list.fireWith; + } ); + + // Make the deferred a promise + promise.promise( deferred ); + + // Call given func if any + if ( func ) { + func.call( deferred, deferred ); + } + + // All done! + return deferred; + }, + + // Deferred helper + when: function( singleValue ) { + var + + // count of uncompleted subordinates + remaining = arguments.length, + + // count of unprocessed arguments + i = remaining, + + // subordinate fulfillment data + resolveContexts = Array( i ), + resolveValues = slice.call( arguments ), + + // the primary Deferred + primary = jQuery.Deferred(), + + // subordinate callback factory + updateFunc = function( i ) { + return function( value ) { + resolveContexts[ i ] = this; + resolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value; + if ( !( --remaining ) ) { + primary.resolveWith( resolveContexts, resolveValues ); + } + }; + }; + + // Single- and empty arguments are adopted like Promise.resolve + if ( remaining <= 1 ) { + adoptValue( singleValue, primary.done( updateFunc( i ) ).resolve, primary.reject, + !remaining ); + + // Use .then() to unwrap secondary thenables (cf. gh-3000) + if ( primary.state() === "pending" || + isFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) { + + return primary.then(); + } + } + + // Multiple arguments are aggregated like Promise.all array elements + while ( i-- ) { + adoptValue( resolveValues[ i ], updateFunc( i ), primary.reject ); + } + + return primary.promise(); + } +} ); + + +// These usually indicate a programmer mistake during development, +// warn about them ASAP rather than swallowing them by default. +var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/; + +jQuery.Deferred.exceptionHook = function( error, stack ) { + + // Support: IE 8 - 9 only + // Console exists when dev tools are open, which can happen at any time + if ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) { + window.console.warn( "jQuery.Deferred exception: " + error.message, error.stack, stack ); + } +}; + + + + +jQuery.readyException = function( error ) { + window.setTimeout( function() { + throw error; + } ); +}; + + + + +// The deferred used on DOM ready +var readyList = jQuery.Deferred(); + +jQuery.fn.ready = function( fn ) { + + readyList + .then( fn ) + + // Wrap jQuery.readyException in a function so that the lookup + // happens at the time of error handling instead of callback + // registration. + .catch( function( error ) { + jQuery.readyException( error ); + } ); + + return this; +}; + +jQuery.extend( { + + // Is the DOM ready to be used? Set to true once it occurs. + isReady: false, + + // A counter to track how many items to wait for before + // the ready event fires. See #6781 + readyWait: 1, + + // Handle when the DOM is ready + ready: function( wait ) { + + // Abort if there are pending holds or we're already ready + if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) { + return; + } + + // Remember that the DOM is ready + jQuery.isReady = true; + + // If a normal DOM Ready event fired, decrement, and wait if need be + if ( wait !== true && --jQuery.readyWait > 0 ) { + return; + } + + // If there are functions bound, to execute + readyList.resolveWith( document, [ jQuery ] ); + } +} ); + +jQuery.ready.then = readyList.then; + +// The ready event handler and self cleanup method +function completed() { + document.removeEventListener( "DOMContentLoaded", completed ); + window.removeEventListener( "load", completed ); + jQuery.ready(); +} + +// Catch cases where $(document).ready() is called +// after the browser event has already occurred. +// Support: IE <=9 - 10 only +// Older IE sometimes signals "interactive" too soon +if ( document.readyState === "complete" || + ( document.readyState !== "loading" && !document.documentElement.doScroll ) ) { + + // Handle it asynchronously to allow scripts the opportunity to delay ready + window.setTimeout( jQuery.ready ); + +} else { + + // Use the handy event callback + document.addEventListener( "DOMContentLoaded", completed ); + + // A fallback to window.onload, that will always work + window.addEventListener( "load", completed ); +} + + + + +// Multifunctional method to get and set values of a collection +// The value/s can optionally be executed if it's a function +var access = function( elems, fn, key, value, chainable, emptyGet, raw ) { + var i = 0, + len = elems.length, + bulk = key == null; + + // Sets many values + if ( toType( key ) === "object" ) { + chainable = true; + for ( i in key ) { + access( elems, fn, i, key[ i ], true, emptyGet, raw ); + } + + // Sets one value + } else if ( value !== undefined ) { + chainable = true; + + if ( !isFunction( value ) ) { + raw = true; + } + + if ( bulk ) { + + // Bulk operations run against the entire set + if ( raw ) { + fn.call( elems, value ); + fn = null; + + // ...except when executing function values + } else { + bulk = fn; + fn = function( elem, _key, value ) { + return bulk.call( jQuery( elem ), value ); + }; + } + } + + if ( fn ) { + for ( ; i < len; i++ ) { + fn( + elems[ i ], key, raw ? + value : + value.call( elems[ i ], i, fn( elems[ i ], key ) ) + ); + } + } + } + + if ( chainable ) { + return elems; + } + + // Gets + if ( bulk ) { + return fn.call( elems ); + } + + return len ? fn( elems[ 0 ], key ) : emptyGet; +}; + + +// Matches dashed string for camelizing +var rmsPrefix = /^-ms-/, + rdashAlpha = /-([a-z])/g; + +// Used by camelCase as callback to replace() +function fcamelCase( _all, letter ) { + return letter.toUpperCase(); +} + +// Convert dashed to camelCase; used by the css and data modules +// Support: IE <=9 - 11, Edge 12 - 15 +// Microsoft forgot to hump their vendor prefix (#9572) +function camelCase( string ) { + return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase ); +} +var acceptData = function( owner ) { + + // Accepts only: + // - Node + // - Node.ELEMENT_NODE + // - Node.DOCUMENT_NODE + // - Object + // - Any + return owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType ); +}; + + + + +function Data() { + this.expando = jQuery.expando + Data.uid++; +} + +Data.uid = 1; + +Data.prototype = { + + cache: function( owner ) { + + // Check if the owner object already has a cache + var value = owner[ this.expando ]; + + // If not, create one + if ( !value ) { + value = {}; + + // We can accept data for non-element nodes in modern browsers, + // but we should not, see #8335. + // Always return an empty object. + if ( acceptData( owner ) ) { + + // If it is a node unlikely to be stringify-ed or looped over + // use plain assignment + if ( owner.nodeType ) { + owner[ this.expando ] = value; + + // Otherwise secure it in a non-enumerable property + // configurable must be true to allow the property to be + // deleted when data is removed + } else { + Object.defineProperty( owner, this.expando, { + value: value, + configurable: true + } ); + } + } + } + + return value; + }, + set: function( owner, data, value ) { + var prop, + cache = this.cache( owner ); + + // Handle: [ owner, key, value ] args + // Always use camelCase key (gh-2257) + if ( typeof data === "string" ) { + cache[ camelCase( data ) ] = value; + + // Handle: [ owner, { properties } ] args + } else { + + // Copy the properties one-by-one to the cache object + for ( prop in data ) { + cache[ camelCase( prop ) ] = data[ prop ]; + } + } + return cache; + }, + get: function( owner, key ) { + return key === undefined ? + this.cache( owner ) : + + // Always use camelCase key (gh-2257) + owner[ this.expando ] && owner[ this.expando ][ camelCase( key ) ]; + }, + access: function( owner, key, value ) { + + // In cases where either: + // + // 1. No key was specified + // 2. A string key was specified, but no value provided + // + // Take the "read" path and allow the get method to determine + // which value to return, respectively either: + // + // 1. The entire cache object + // 2. The data stored at the key + // + if ( key === undefined || + ( ( key && typeof key === "string" ) && value === undefined ) ) { + + return this.get( owner, key ); + } + + // When the key is not a string, or both a key and value + // are specified, set or extend (existing objects) with either: + // + // 1. An object of properties + // 2. A key and value + // + this.set( owner, key, value ); + + // Since the "set" path can have two possible entry points + // return the expected data based on which path was taken[*] + return value !== undefined ? value : key; + }, + remove: function( owner, key ) { + var i, + cache = owner[ this.expando ]; + + if ( cache === undefined ) { + return; + } + + if ( key !== undefined ) { + + // Support array or space separated string of keys + if ( Array.isArray( key ) ) { + + // If key is an array of keys... + // We always set camelCase keys, so remove that. + key = key.map( camelCase ); + } else { + key = camelCase( key ); + + // If a key with the spaces exists, use it. + // Otherwise, create an array by matching non-whitespace + key = key in cache ? + [ key ] : + ( key.match( rnothtmlwhite ) || [] ); + } + + i = key.length; + + while ( i-- ) { + delete cache[ key[ i ] ]; + } + } + + // Remove the expando if there's no more data + if ( key === undefined || jQuery.isEmptyObject( cache ) ) { + + // Support: Chrome <=35 - 45 + // Webkit & Blink performance suffers when deleting properties + // from DOM nodes, so set to undefined instead + // https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted) + if ( owner.nodeType ) { + owner[ this.expando ] = undefined; + } else { + delete owner[ this.expando ]; + } + } + }, + hasData: function( owner ) { + var cache = owner[ this.expando ]; + return cache !== undefined && !jQuery.isEmptyObject( cache ); + } +}; +var dataPriv = new Data(); + +var dataUser = new Data(); + + + +// Implementation Summary +// +// 1. Enforce API surface and semantic compatibility with 1.9.x branch +// 2. Improve the module's maintainability by reducing the storage +// paths to a single mechanism. +// 3. Use the same single mechanism to support "private" and "user" data. +// 4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData) +// 5. Avoid exposing implementation details on user objects (eg. expando properties) +// 6. Provide a clear path for implementation upgrade to WeakMap in 2014 + +var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/, + rmultiDash = /[A-Z]/g; + +function getData( data ) { + if ( data === "true" ) { + return true; + } + + if ( data === "false" ) { + return false; + } + + if ( data === "null" ) { + return null; + } + + // Only convert to a number if it doesn't change the string + if ( data === +data + "" ) { + return +data; + } + + if ( rbrace.test( data ) ) { + return JSON.parse( data ); + } + + return data; +} + +function dataAttr( elem, key, data ) { + var name; + + // If nothing was found internally, try to fetch any + // data from the HTML5 data-* attribute + if ( data === undefined && elem.nodeType === 1 ) { + name = "data-" + key.replace( rmultiDash, "-$&" ).toLowerCase(); + data = elem.getAttribute( name ); + + if ( typeof data === "string" ) { + try { + data = getData( data ); + } catch ( e ) {} + + // Make sure we set the data so it isn't changed later + dataUser.set( elem, key, data ); + } else { + data = undefined; + } + } + return data; +} + +jQuery.extend( { + hasData: function( elem ) { + return dataUser.hasData( elem ) || dataPriv.hasData( elem ); + }, + + data: function( elem, name, data ) { + return dataUser.access( elem, name, data ); + }, + + removeData: function( elem, name ) { + dataUser.remove( elem, name ); + }, + + // TODO: Now that all calls to _data and _removeData have been replaced + // with direct calls to dataPriv methods, these can be deprecated. + _data: function( elem, name, data ) { + return dataPriv.access( elem, name, data ); + }, + + _removeData: function( elem, name ) { + dataPriv.remove( elem, name ); + } +} ); + +jQuery.fn.extend( { + data: function( key, value ) { + var i, name, data, + elem = this[ 0 ], + attrs = elem && elem.attributes; + + // Gets all values + if ( key === undefined ) { + if ( this.length ) { + data = dataUser.get( elem ); + + if ( elem.nodeType === 1 && !dataPriv.get( elem, "hasDataAttrs" ) ) { + i = attrs.length; + while ( i-- ) { + + // Support: IE 11 only + // The attrs elements can be null (#14894) + if ( attrs[ i ] ) { + name = attrs[ i ].name; + if ( name.indexOf( "data-" ) === 0 ) { + name = camelCase( name.slice( 5 ) ); + dataAttr( elem, name, data[ name ] ); + } + } + } + dataPriv.set( elem, "hasDataAttrs", true ); + } + } + + return data; + } + + // Sets multiple values + if ( typeof key === "object" ) { + return this.each( function() { + dataUser.set( this, key ); + } ); + } + + return access( this, function( value ) { + var data; + + // The calling jQuery object (element matches) is not empty + // (and therefore has an element appears at this[ 0 ]) and the + // `value` parameter was not undefined. An empty jQuery object + // will result in `undefined` for elem = this[ 0 ] which will + // throw an exception if an attempt to read a data cache is made. + if ( elem && value === undefined ) { + + // Attempt to get data from the cache + // The key will always be camelCased in Data + data = dataUser.get( elem, key ); + if ( data !== undefined ) { + return data; + } + + // Attempt to "discover" the data in + // HTML5 custom data-* attrs + data = dataAttr( elem, key ); + if ( data !== undefined ) { + return data; + } + + // We tried really hard, but the data doesn't exist. + return; + } + + // Set the data... + this.each( function() { + + // We always store the camelCased key + dataUser.set( this, key, value ); + } ); + }, null, value, arguments.length > 1, null, true ); + }, + + removeData: function( key ) { + return this.each( function() { + dataUser.remove( this, key ); + } ); + } +} ); + + +jQuery.extend( { + queue: function( elem, type, data ) { + var queue; + + if ( elem ) { + type = ( type || "fx" ) + "queue"; + queue = dataPriv.get( elem, type ); + + // Speed up dequeue by getting out quickly if this is just a lookup + if ( data ) { + if ( !queue || Array.isArray( data ) ) { + queue = dataPriv.access( elem, type, jQuery.makeArray( data ) ); + } else { + queue.push( data ); + } + } + return queue || []; + } + }, + + dequeue: function( elem, type ) { + type = type || "fx"; + + var queue = jQuery.queue( elem, type ), + startLength = queue.length, + fn = queue.shift(), + hooks = jQuery._queueHooks( elem, type ), + next = function() { + jQuery.dequeue( elem, type ); + }; + + // If the fx queue is dequeued, always remove the progress sentinel + if ( fn === "inprogress" ) { + fn = queue.shift(); + startLength--; + } + + if ( fn ) { + + // Add a progress sentinel to prevent the fx queue from being + // automatically dequeued + if ( type === "fx" ) { + queue.unshift( "inprogress" ); + } + + // Clear up the last queue stop function + delete hooks.stop; + fn.call( elem, next, hooks ); + } + + if ( !startLength && hooks ) { + hooks.empty.fire(); + } + }, + + // Not public - generate a queueHooks object, or return the current one + _queueHooks: function( elem, type ) { + var key = type + "queueHooks"; + return dataPriv.get( elem, key ) || dataPriv.access( elem, key, { + empty: jQuery.Callbacks( "once memory" ).add( function() { + dataPriv.remove( elem, [ type + "queue", key ] ); + } ) + } ); + } +} ); + +jQuery.fn.extend( { + queue: function( type, data ) { + var setter = 2; + + if ( typeof type !== "string" ) { + data = type; + type = "fx"; + setter--; + } + + if ( arguments.length < setter ) { + return jQuery.queue( this[ 0 ], type ); + } + + return data === undefined ? + this : + this.each( function() { + var queue = jQuery.queue( this, type, data ); + + // Ensure a hooks for this queue + jQuery._queueHooks( this, type ); + + if ( type === "fx" && queue[ 0 ] !== "inprogress" ) { + jQuery.dequeue( this, type ); + } + } ); + }, + dequeue: function( type ) { + return this.each( function() { + jQuery.dequeue( this, type ); + } ); + }, + clearQueue: function( type ) { + return this.queue( type || "fx", [] ); + }, + + // Get a promise resolved when queues of a certain type + // are emptied (fx is the type by default) + promise: function( type, obj ) { + var tmp, + count = 1, + defer = jQuery.Deferred(), + elements = this, + i = this.length, + resolve = function() { + if ( !( --count ) ) { + defer.resolveWith( elements, [ elements ] ); + } + }; + + if ( typeof type !== "string" ) { + obj = type; + type = undefined; + } + type = type || "fx"; + + while ( i-- ) { + tmp = dataPriv.get( elements[ i ], type + "queueHooks" ); + if ( tmp && tmp.empty ) { + count++; + tmp.empty.add( resolve ); + } + } + resolve(); + return defer.promise( obj ); + } +} ); +var pnum = ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source; + +var rcssNum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" ); + + +var cssExpand = [ "Top", "Right", "Bottom", "Left" ]; + +var documentElement = document.documentElement; + + + + var isAttached = function( elem ) { + return jQuery.contains( elem.ownerDocument, elem ); + }, + composed = { composed: true }; + + // Support: IE 9 - 11+, Edge 12 - 18+, iOS 10.0 - 10.2 only + // Check attachment across shadow DOM boundaries when possible (gh-3504) + // Support: iOS 10.0-10.2 only + // Early iOS 10 versions support `attachShadow` but not `getRootNode`, + // leading to errors. We need to check for `getRootNode`. + if ( documentElement.getRootNode ) { + isAttached = function( elem ) { + return jQuery.contains( elem.ownerDocument, elem ) || + elem.getRootNode( composed ) === elem.ownerDocument; + }; + } +var isHiddenWithinTree = function( elem, el ) { + + // isHiddenWithinTree might be called from jQuery#filter function; + // in that case, element will be second argument + elem = el || elem; + + // Inline style trumps all + return elem.style.display === "none" || + elem.style.display === "" && + + // Otherwise, check computed style + // Support: Firefox <=43 - 45 + // Disconnected elements can have computed display: none, so first confirm that elem is + // in the document. + isAttached( elem ) && + + jQuery.css( elem, "display" ) === "none"; + }; + + + +function adjustCSS( elem, prop, valueParts, tween ) { + var adjusted, scale, + maxIterations = 20, + currentValue = tween ? + function() { + return tween.cur(); + } : + function() { + return jQuery.css( elem, prop, "" ); + }, + initial = currentValue(), + unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ), + + // Starting value computation is required for potential unit mismatches + initialInUnit = elem.nodeType && + ( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) && + rcssNum.exec( jQuery.css( elem, prop ) ); + + if ( initialInUnit && initialInUnit[ 3 ] !== unit ) { + + // Support: Firefox <=54 + // Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144) + initial = initial / 2; + + // Trust units reported by jQuery.css + unit = unit || initialInUnit[ 3 ]; + + // Iteratively approximate from a nonzero starting point + initialInUnit = +initial || 1; + + while ( maxIterations-- ) { + + // Evaluate and update our best guess (doubling guesses that zero out). + // Finish if the scale equals or crosses 1 (making the old*new product non-positive). + jQuery.style( elem, prop, initialInUnit + unit ); + if ( ( 1 - scale ) * ( 1 - ( scale = currentValue() / initial || 0.5 ) ) <= 0 ) { + maxIterations = 0; + } + initialInUnit = initialInUnit / scale; + + } + + initialInUnit = initialInUnit * 2; + jQuery.style( elem, prop, initialInUnit + unit ); + + // Make sure we update the tween properties later on + valueParts = valueParts || []; + } + + if ( valueParts ) { + initialInUnit = +initialInUnit || +initial || 0; + + // Apply relative offset (+=/-=) if specified + adjusted = valueParts[ 1 ] ? + initialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] : + +valueParts[ 2 ]; + if ( tween ) { + tween.unit = unit; + tween.start = initialInUnit; + tween.end = adjusted; + } + } + return adjusted; +} + + +var defaultDisplayMap = {}; + +function getDefaultDisplay( elem ) { + var temp, + doc = elem.ownerDocument, + nodeName = elem.nodeName, + display = defaultDisplayMap[ nodeName ]; + + if ( display ) { + return display; + } + + temp = doc.body.appendChild( doc.createElement( nodeName ) ); + display = jQuery.css( temp, "display" ); + + temp.parentNode.removeChild( temp ); + + if ( display === "none" ) { + display = "block"; + } + defaultDisplayMap[ nodeName ] = display; + + return display; +} + +function showHide( elements, show ) { + var display, elem, + values = [], + index = 0, + length = elements.length; + + // Determine new display value for elements that need to change + for ( ; index < length; index++ ) { + elem = elements[ index ]; + if ( !elem.style ) { + continue; + } + + display = elem.style.display; + if ( show ) { + + // Since we force visibility upon cascade-hidden elements, an immediate (and slow) + // check is required in this first loop unless we have a nonempty display value (either + // inline or about-to-be-restored) + if ( display === "none" ) { + values[ index ] = dataPriv.get( elem, "display" ) || null; + if ( !values[ index ] ) { + elem.style.display = ""; + } + } + if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) { + values[ index ] = getDefaultDisplay( elem ); + } + } else { + if ( display !== "none" ) { + values[ index ] = "none"; + + // Remember what we're overwriting + dataPriv.set( elem, "display", display ); + } + } + } + + // Set the display of the elements in a second loop to avoid constant reflow + for ( index = 0; index < length; index++ ) { + if ( values[ index ] != null ) { + elements[ index ].style.display = values[ index ]; + } + } + + return elements; +} + +jQuery.fn.extend( { + show: function() { + return showHide( this, true ); + }, + hide: function() { + return showHide( this ); + }, + toggle: function( state ) { + if ( typeof state === "boolean" ) { + return state ? this.show() : this.hide(); + } + + return this.each( function() { + if ( isHiddenWithinTree( this ) ) { + jQuery( this ).show(); + } else { + jQuery( this ).hide(); + } + } ); + } +} ); +var rcheckableType = ( /^(?:checkbox|radio)$/i ); + +var rtagName = ( /<([a-z][^\/\0>\x20\t\r\n\f]*)/i ); + +var rscriptType = ( /^$|^module$|\/(?:java|ecma)script/i ); + + + +( function() { + var fragment = document.createDocumentFragment(), + div = fragment.appendChild( document.createElement( "div" ) ), + input = document.createElement( "input" ); + + // Support: Android 4.0 - 4.3 only + // Check state lost if the name is set (#11217) + // Support: Windows Web Apps (WWA) + // `name` and `type` must use .setAttribute for WWA (#14901) + input.setAttribute( "type", "radio" ); + input.setAttribute( "checked", "checked" ); + input.setAttribute( "name", "t" ); + + div.appendChild( input ); + + // Support: Android <=4.1 only + // Older WebKit doesn't clone checked state correctly in fragments + support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked; + + // Support: IE <=11 only + // Make sure textarea (and checkbox) defaultValue is properly cloned + div.innerHTML = ""; + support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue; + + // Support: IE <=9 only + // IE <=9 replaces "; + support.option = !!div.lastChild; +} )(); + + +// We have to close these tags to support XHTML (#13200) +var wrapMap = { + + // XHTML parsers do not magically insert elements in the + // same way that tag soup parsers do. So we cannot shorten + // this by omitting or other required elements. + thead: [ 1, "", "
" ], + col: [ 2, "", "
" ], + tr: [ 2, "", "
" ], + td: [ 3, "", "
" ], + + _default: [ 0, "", "" ] +}; + +wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead; +wrapMap.th = wrapMap.td; + +// Support: IE <=9 only +if ( !support.option ) { + wrapMap.optgroup = wrapMap.option = [ 1, "" ]; +} + + +function getAll( context, tag ) { + + // Support: IE <=9 - 11 only + // Use typeof to avoid zero-argument method invocation on host objects (#15151) + var ret; + + if ( typeof context.getElementsByTagName !== "undefined" ) { + ret = context.getElementsByTagName( tag || "*" ); + + } else if ( typeof context.querySelectorAll !== "undefined" ) { + ret = context.querySelectorAll( tag || "*" ); + + } else { + ret = []; + } + + if ( tag === undefined || tag && nodeName( context, tag ) ) { + return jQuery.merge( [ context ], ret ); + } + + return ret; +} + + +// Mark scripts as having already been evaluated +function setGlobalEval( elems, refElements ) { + var i = 0, + l = elems.length; + + for ( ; i < l; i++ ) { + dataPriv.set( + elems[ i ], + "globalEval", + !refElements || dataPriv.get( refElements[ i ], "globalEval" ) + ); + } +} + + +var rhtml = /<|&#?\w+;/; + +function buildFragment( elems, context, scripts, selection, ignored ) { + var elem, tmp, tag, wrap, attached, j, + fragment = context.createDocumentFragment(), + nodes = [], + i = 0, + l = elems.length; + + for ( ; i < l; i++ ) { + elem = elems[ i ]; + + if ( elem || elem === 0 ) { + + // Add nodes directly + if ( toType( elem ) === "object" ) { + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem ); + + // Convert non-html into a text node + } else if ( !rhtml.test( elem ) ) { + nodes.push( context.createTextNode( elem ) ); + + // Convert html into DOM nodes + } else { + tmp = tmp || fragment.appendChild( context.createElement( "div" ) ); + + // Deserialize a standard representation + tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase(); + wrap = wrapMap[ tag ] || wrapMap._default; + tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ]; + + // Descend through wrappers to the right content + j = wrap[ 0 ]; + while ( j-- ) { + tmp = tmp.lastChild; + } + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( nodes, tmp.childNodes ); + + // Remember the top-level container + tmp = fragment.firstChild; + + // Ensure the created nodes are orphaned (#12392) + tmp.textContent = ""; + } + } + } + + // Remove wrapper from fragment + fragment.textContent = ""; + + i = 0; + while ( ( elem = nodes[ i++ ] ) ) { + + // Skip elements already in the context collection (trac-4087) + if ( selection && jQuery.inArray( elem, selection ) > -1 ) { + if ( ignored ) { + ignored.push( elem ); + } + continue; + } + + attached = isAttached( elem ); + + // Append to fragment + tmp = getAll( fragment.appendChild( elem ), "script" ); + + // Preserve script evaluation history + if ( attached ) { + setGlobalEval( tmp ); + } + + // Capture executables + if ( scripts ) { + j = 0; + while ( ( elem = tmp[ j++ ] ) ) { + if ( rscriptType.test( elem.type || "" ) ) { + scripts.push( elem ); + } + } + } + } + + return fragment; +} + + +var rtypenamespace = /^([^.]*)(?:\.(.+)|)/; + +function returnTrue() { + return true; +} + +function returnFalse() { + return false; +} + +// Support: IE <=9 - 11+ +// focus() and blur() are asynchronous, except when they are no-op. +// So expect focus to be synchronous when the element is already active, +// and blur to be synchronous when the element is not already active. +// (focus and blur are always synchronous in other supported browsers, +// this just defines when we can count on it). +function expectSync( elem, type ) { + return ( elem === safeActiveElement() ) === ( type === "focus" ); +} + +// Support: IE <=9 only +// Accessing document.activeElement can throw unexpectedly +// https://bugs.jquery.com/ticket/13393 +function safeActiveElement() { + try { + return document.activeElement; + } catch ( err ) { } +} + +function on( elem, types, selector, data, fn, one ) { + var origFn, type; + + // Types can be a map of types/handlers + if ( typeof types === "object" ) { + + // ( types-Object, selector, data ) + if ( typeof selector !== "string" ) { + + // ( types-Object, data ) + data = data || selector; + selector = undefined; + } + for ( type in types ) { + on( elem, type, selector, data, types[ type ], one ); + } + return elem; + } + + if ( data == null && fn == null ) { + + // ( types, fn ) + fn = selector; + data = selector = undefined; + } else if ( fn == null ) { + if ( typeof selector === "string" ) { + + // ( types, selector, fn ) + fn = data; + data = undefined; + } else { + + // ( types, data, fn ) + fn = data; + data = selector; + selector = undefined; + } + } + if ( fn === false ) { + fn = returnFalse; + } else if ( !fn ) { + return elem; + } + + if ( one === 1 ) { + origFn = fn; + fn = function( event ) { + + // Can use an empty set, since event contains the info + jQuery().off( event ); + return origFn.apply( this, arguments ); + }; + + // Use same guid so caller can remove using origFn + fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ ); + } + return elem.each( function() { + jQuery.event.add( this, types, fn, data, selector ); + } ); +} + +/* + * Helper functions for managing events -- not part of the public interface. + * Props to Dean Edwards' addEvent library for many of the ideas. + */ +jQuery.event = { + + global: {}, + + add: function( elem, types, handler, data, selector ) { + + var handleObjIn, eventHandle, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = dataPriv.get( elem ); + + // Only attach events to objects that accept data + if ( !acceptData( elem ) ) { + return; + } + + // Caller can pass in an object of custom data in lieu of the handler + if ( handler.handler ) { + handleObjIn = handler; + handler = handleObjIn.handler; + selector = handleObjIn.selector; + } + + // Ensure that invalid selectors throw exceptions at attach time + // Evaluate against documentElement in case elem is a non-element node (e.g., document) + if ( selector ) { + jQuery.find.matchesSelector( documentElement, selector ); + } + + // Make sure that the handler has a unique ID, used to find/remove it later + if ( !handler.guid ) { + handler.guid = jQuery.guid++; + } + + // Init the element's event structure and main handler, if this is the first + if ( !( events = elemData.events ) ) { + events = elemData.events = Object.create( null ); + } + if ( !( eventHandle = elemData.handle ) ) { + eventHandle = elemData.handle = function( e ) { + + // Discard the second event of a jQuery.event.trigger() and + // when an event is called after a page has unloaded + return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ? + jQuery.event.dispatch.apply( elem, arguments ) : undefined; + }; + } + + // Handle multiple events separated by a space + types = ( types || "" ).match( rnothtmlwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[ t ] ) || []; + type = origType = tmp[ 1 ]; + namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort(); + + // There *must* be a type, no attaching namespace-only handlers + if ( !type ) { + continue; + } + + // If event changes its type, use the special event handlers for the changed type + special = jQuery.event.special[ type ] || {}; + + // If selector defined, determine special event api type, otherwise given type + type = ( selector ? special.delegateType : special.bindType ) || type; + + // Update special based on newly reset type + special = jQuery.event.special[ type ] || {}; + + // handleObj is passed to all event handlers + handleObj = jQuery.extend( { + type: type, + origType: origType, + data: data, + handler: handler, + guid: handler.guid, + selector: selector, + needsContext: selector && jQuery.expr.match.needsContext.test( selector ), + namespace: namespaces.join( "." ) + }, handleObjIn ); + + // Init the event handler queue if we're the first + if ( !( handlers = events[ type ] ) ) { + handlers = events[ type ] = []; + handlers.delegateCount = 0; + + // Only use addEventListener if the special events handler returns false + if ( !special.setup || + special.setup.call( elem, data, namespaces, eventHandle ) === false ) { + + if ( elem.addEventListener ) { + elem.addEventListener( type, eventHandle ); + } + } + } + + if ( special.add ) { + special.add.call( elem, handleObj ); + + if ( !handleObj.handler.guid ) { + handleObj.handler.guid = handler.guid; + } + } + + // Add to the element's handler list, delegates in front + if ( selector ) { + handlers.splice( handlers.delegateCount++, 0, handleObj ); + } else { + handlers.push( handleObj ); + } + + // Keep track of which events have ever been used, for event optimization + jQuery.event.global[ type ] = true; + } + + }, + + // Detach an event or set of events from an element + remove: function( elem, types, handler, selector, mappedTypes ) { + + var j, origCount, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = dataPriv.hasData( elem ) && dataPriv.get( elem ); + + if ( !elemData || !( events = elemData.events ) ) { + return; + } + + // Once for each type.namespace in types; type may be omitted + types = ( types || "" ).match( rnothtmlwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[ t ] ) || []; + type = origType = tmp[ 1 ]; + namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort(); + + // Unbind all events (on this namespace, if provided) for the element + if ( !type ) { + for ( type in events ) { + jQuery.event.remove( elem, type + types[ t ], handler, selector, true ); + } + continue; + } + + special = jQuery.event.special[ type ] || {}; + type = ( selector ? special.delegateType : special.bindType ) || type; + handlers = events[ type ] || []; + tmp = tmp[ 2 ] && + new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ); + + // Remove matching events + origCount = j = handlers.length; + while ( j-- ) { + handleObj = handlers[ j ]; + + if ( ( mappedTypes || origType === handleObj.origType ) && + ( !handler || handler.guid === handleObj.guid ) && + ( !tmp || tmp.test( handleObj.namespace ) ) && + ( !selector || selector === handleObj.selector || + selector === "**" && handleObj.selector ) ) { + handlers.splice( j, 1 ); + + if ( handleObj.selector ) { + handlers.delegateCount--; + } + if ( special.remove ) { + special.remove.call( elem, handleObj ); + } + } + } + + // Remove generic event handler if we removed something and no more handlers exist + // (avoids potential for endless recursion during removal of special event handlers) + if ( origCount && !handlers.length ) { + if ( !special.teardown || + special.teardown.call( elem, namespaces, elemData.handle ) === false ) { + + jQuery.removeEvent( elem, type, elemData.handle ); + } + + delete events[ type ]; + } + } + + // Remove data and the expando if it's no longer used + if ( jQuery.isEmptyObject( events ) ) { + dataPriv.remove( elem, "handle events" ); + } + }, + + dispatch: function( nativeEvent ) { + + var i, j, ret, matched, handleObj, handlerQueue, + args = new Array( arguments.length ), + + // Make a writable jQuery.Event from the native event object + event = jQuery.event.fix( nativeEvent ), + + handlers = ( + dataPriv.get( this, "events" ) || Object.create( null ) + )[ event.type ] || [], + special = jQuery.event.special[ event.type ] || {}; + + // Use the fix-ed jQuery.Event rather than the (read-only) native event + args[ 0 ] = event; + + for ( i = 1; i < arguments.length; i++ ) { + args[ i ] = arguments[ i ]; + } + + event.delegateTarget = this; + + // Call the preDispatch hook for the mapped type, and let it bail if desired + if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) { + return; + } + + // Determine handlers + handlerQueue = jQuery.event.handlers.call( this, event, handlers ); + + // Run delegates first; they may want to stop propagation beneath us + i = 0; + while ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) { + event.currentTarget = matched.elem; + + j = 0; + while ( ( handleObj = matched.handlers[ j++ ] ) && + !event.isImmediatePropagationStopped() ) { + + // If the event is namespaced, then each handler is only invoked if it is + // specially universal or its namespaces are a superset of the event's. + if ( !event.rnamespace || handleObj.namespace === false || + event.rnamespace.test( handleObj.namespace ) ) { + + event.handleObj = handleObj; + event.data = handleObj.data; + + ret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle || + handleObj.handler ).apply( matched.elem, args ); + + if ( ret !== undefined ) { + if ( ( event.result = ret ) === false ) { + event.preventDefault(); + event.stopPropagation(); + } + } + } + } + } + + // Call the postDispatch hook for the mapped type + if ( special.postDispatch ) { + special.postDispatch.call( this, event ); + } + + return event.result; + }, + + handlers: function( event, handlers ) { + var i, handleObj, sel, matchedHandlers, matchedSelectors, + handlerQueue = [], + delegateCount = handlers.delegateCount, + cur = event.target; + + // Find delegate handlers + if ( delegateCount && + + // Support: IE <=9 + // Black-hole SVG instance trees (trac-13180) + cur.nodeType && + + // Support: Firefox <=42 + // Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861) + // https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click + // Support: IE 11 only + // ...but not arrow key "clicks" of radio inputs, which can have `button` -1 (gh-2343) + !( event.type === "click" && event.button >= 1 ) ) { + + for ( ; cur !== this; cur = cur.parentNode || this ) { + + // Don't check non-elements (#13208) + // Don't process clicks on disabled elements (#6911, #8165, #11382, #11764) + if ( cur.nodeType === 1 && !( event.type === "click" && cur.disabled === true ) ) { + matchedHandlers = []; + matchedSelectors = {}; + for ( i = 0; i < delegateCount; i++ ) { + handleObj = handlers[ i ]; + + // Don't conflict with Object.prototype properties (#13203) + sel = handleObj.selector + " "; + + if ( matchedSelectors[ sel ] === undefined ) { + matchedSelectors[ sel ] = handleObj.needsContext ? + jQuery( sel, this ).index( cur ) > -1 : + jQuery.find( sel, this, null, [ cur ] ).length; + } + if ( matchedSelectors[ sel ] ) { + matchedHandlers.push( handleObj ); + } + } + if ( matchedHandlers.length ) { + handlerQueue.push( { elem: cur, handlers: matchedHandlers } ); + } + } + } + } + + // Add the remaining (directly-bound) handlers + cur = this; + if ( delegateCount < handlers.length ) { + handlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } ); + } + + return handlerQueue; + }, + + addProp: function( name, hook ) { + Object.defineProperty( jQuery.Event.prototype, name, { + enumerable: true, + configurable: true, + + get: isFunction( hook ) ? + function() { + if ( this.originalEvent ) { + return hook( this.originalEvent ); + } + } : + function() { + if ( this.originalEvent ) { + return this.originalEvent[ name ]; + } + }, + + set: function( value ) { + Object.defineProperty( this, name, { + enumerable: true, + configurable: true, + writable: true, + value: value + } ); + } + } ); + }, + + fix: function( originalEvent ) { + return originalEvent[ jQuery.expando ] ? + originalEvent : + new jQuery.Event( originalEvent ); + }, + + special: { + load: { + + // Prevent triggered image.load events from bubbling to window.load + noBubble: true + }, + click: { + + // Utilize native event to ensure correct state for checkable inputs + setup: function( data ) { + + // For mutual compressibility with _default, replace `this` access with a local var. + // `|| data` is dead code meant only to preserve the variable through minification. + var el = this || data; + + // Claim the first handler + if ( rcheckableType.test( el.type ) && + el.click && nodeName( el, "input" ) ) { + + // dataPriv.set( el, "click", ... ) + leverageNative( el, "click", returnTrue ); + } + + // Return false to allow normal processing in the caller + return false; + }, + trigger: function( data ) { + + // For mutual compressibility with _default, replace `this` access with a local var. + // `|| data` is dead code meant only to preserve the variable through minification. + var el = this || data; + + // Force setup before triggering a click + if ( rcheckableType.test( el.type ) && + el.click && nodeName( el, "input" ) ) { + + leverageNative( el, "click" ); + } + + // Return non-false to allow normal event-path propagation + return true; + }, + + // For cross-browser consistency, suppress native .click() on links + // Also prevent it if we're currently inside a leveraged native-event stack + _default: function( event ) { + var target = event.target; + return rcheckableType.test( target.type ) && + target.click && nodeName( target, "input" ) && + dataPriv.get( target, "click" ) || + nodeName( target, "a" ); + } + }, + + beforeunload: { + postDispatch: function( event ) { + + // Support: Firefox 20+ + // Firefox doesn't alert if the returnValue field is not set. + if ( event.result !== undefined && event.originalEvent ) { + event.originalEvent.returnValue = event.result; + } + } + } + } +}; + +// Ensure the presence of an event listener that handles manually-triggered +// synthetic events by interrupting progress until reinvoked in response to +// *native* events that it fires directly, ensuring that state changes have +// already occurred before other listeners are invoked. +function leverageNative( el, type, expectSync ) { + + // Missing expectSync indicates a trigger call, which must force setup through jQuery.event.add + if ( !expectSync ) { + if ( dataPriv.get( el, type ) === undefined ) { + jQuery.event.add( el, type, returnTrue ); + } + return; + } + + // Register the controller as a special universal handler for all event namespaces + dataPriv.set( el, type, false ); + jQuery.event.add( el, type, { + namespace: false, + handler: function( event ) { + var notAsync, result, + saved = dataPriv.get( this, type ); + + if ( ( event.isTrigger & 1 ) && this[ type ] ) { + + // Interrupt processing of the outer synthetic .trigger()ed event + // Saved data should be false in such cases, but might be a leftover capture object + // from an async native handler (gh-4350) + if ( !saved.length ) { + + // Store arguments for use when handling the inner native event + // There will always be at least one argument (an event object), so this array + // will not be confused with a leftover capture object. + saved = slice.call( arguments ); + dataPriv.set( this, type, saved ); + + // Trigger the native event and capture its result + // Support: IE <=9 - 11+ + // focus() and blur() are asynchronous + notAsync = expectSync( this, type ); + this[ type ](); + result = dataPriv.get( this, type ); + if ( saved !== result || notAsync ) { + dataPriv.set( this, type, false ); + } else { + result = {}; + } + if ( saved !== result ) { + + // Cancel the outer synthetic event + event.stopImmediatePropagation(); + event.preventDefault(); + + // Support: Chrome 86+ + // In Chrome, if an element having a focusout handler is blurred by + // clicking outside of it, it invokes the handler synchronously. If + // that handler calls `.remove()` on the element, the data is cleared, + // leaving `result` undefined. We need to guard against this. + return result && result.value; + } + + // If this is an inner synthetic event for an event with a bubbling surrogate + // (focus or blur), assume that the surrogate already propagated from triggering the + // native event and prevent that from happening again here. + // This technically gets the ordering wrong w.r.t. to `.trigger()` (in which the + // bubbling surrogate propagates *after* the non-bubbling base), but that seems + // less bad than duplication. + } else if ( ( jQuery.event.special[ type ] || {} ).delegateType ) { + event.stopPropagation(); + } + + // If this is a native event triggered above, everything is now in order + // Fire an inner synthetic event with the original arguments + } else if ( saved.length ) { + + // ...and capture the result + dataPriv.set( this, type, { + value: jQuery.event.trigger( + + // Support: IE <=9 - 11+ + // Extend with the prototype to reset the above stopImmediatePropagation() + jQuery.extend( saved[ 0 ], jQuery.Event.prototype ), + saved.slice( 1 ), + this + ) + } ); + + // Abort handling of the native event + event.stopImmediatePropagation(); + } + } + } ); +} + +jQuery.removeEvent = function( elem, type, handle ) { + + // This "if" is needed for plain objects + if ( elem.removeEventListener ) { + elem.removeEventListener( type, handle ); + } +}; + +jQuery.Event = function( src, props ) { + + // Allow instantiation without the 'new' keyword + if ( !( this instanceof jQuery.Event ) ) { + return new jQuery.Event( src, props ); + } + + // Event object + if ( src && src.type ) { + this.originalEvent = src; + this.type = src.type; + + // Events bubbling up the document may have been marked as prevented + // by a handler lower down the tree; reflect the correct value. + this.isDefaultPrevented = src.defaultPrevented || + src.defaultPrevented === undefined && + + // Support: Android <=2.3 only + src.returnValue === false ? + returnTrue : + returnFalse; + + // Create target properties + // Support: Safari <=6 - 7 only + // Target should not be a text node (#504, #13143) + this.target = ( src.target && src.target.nodeType === 3 ) ? + src.target.parentNode : + src.target; + + this.currentTarget = src.currentTarget; + this.relatedTarget = src.relatedTarget; + + // Event type + } else { + this.type = src; + } + + // Put explicitly provided properties onto the event object + if ( props ) { + jQuery.extend( this, props ); + } + + // Create a timestamp if incoming event doesn't have one + this.timeStamp = src && src.timeStamp || Date.now(); + + // Mark it as fixed + this[ jQuery.expando ] = true; +}; + +// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding +// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html +jQuery.Event.prototype = { + constructor: jQuery.Event, + isDefaultPrevented: returnFalse, + isPropagationStopped: returnFalse, + isImmediatePropagationStopped: returnFalse, + isSimulated: false, + + preventDefault: function() { + var e = this.originalEvent; + + this.isDefaultPrevented = returnTrue; + + if ( e && !this.isSimulated ) { + e.preventDefault(); + } + }, + stopPropagation: function() { + var e = this.originalEvent; + + this.isPropagationStopped = returnTrue; + + if ( e && !this.isSimulated ) { + e.stopPropagation(); + } + }, + stopImmediatePropagation: function() { + var e = this.originalEvent; + + this.isImmediatePropagationStopped = returnTrue; + + if ( e && !this.isSimulated ) { + e.stopImmediatePropagation(); + } + + this.stopPropagation(); + } +}; + +// Includes all common event props including KeyEvent and MouseEvent specific props +jQuery.each( { + altKey: true, + bubbles: true, + cancelable: true, + changedTouches: true, + ctrlKey: true, + detail: true, + eventPhase: true, + metaKey: true, + pageX: true, + pageY: true, + shiftKey: true, + view: true, + "char": true, + code: true, + charCode: true, + key: true, + keyCode: true, + button: true, + buttons: true, + clientX: true, + clientY: true, + offsetX: true, + offsetY: true, + pointerId: true, + pointerType: true, + screenX: true, + screenY: true, + targetTouches: true, + toElement: true, + touches: true, + which: true +}, jQuery.event.addProp ); + +jQuery.each( { focus: "focusin", blur: "focusout" }, function( type, delegateType ) { + jQuery.event.special[ type ] = { + + // Utilize native event if possible so blur/focus sequence is correct + setup: function() { + + // Claim the first handler + // dataPriv.set( this, "focus", ... ) + // dataPriv.set( this, "blur", ... ) + leverageNative( this, type, expectSync ); + + // Return false to allow normal processing in the caller + return false; + }, + trigger: function() { + + // Force setup before trigger + leverageNative( this, type ); + + // Return non-false to allow normal event-path propagation + return true; + }, + + // Suppress native focus or blur as it's already being fired + // in leverageNative. + _default: function() { + return true; + }, + + delegateType: delegateType + }; +} ); + +// Create mouseenter/leave events using mouseover/out and event-time checks +// so that event delegation works in jQuery. +// Do the same for pointerenter/pointerleave and pointerover/pointerout +// +// Support: Safari 7 only +// Safari sends mouseenter too often; see: +// https://bugs.chromium.org/p/chromium/issues/detail?id=470258 +// for the description of the bug (it existed in older Chrome versions as well). +jQuery.each( { + mouseenter: "mouseover", + mouseleave: "mouseout", + pointerenter: "pointerover", + pointerleave: "pointerout" +}, function( orig, fix ) { + jQuery.event.special[ orig ] = { + delegateType: fix, + bindType: fix, + + handle: function( event ) { + var ret, + target = this, + related = event.relatedTarget, + handleObj = event.handleObj; + + // For mouseenter/leave call the handler if related is outside the target. + // NB: No relatedTarget if the mouse left/entered the browser window + if ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) { + event.type = handleObj.origType; + ret = handleObj.handler.apply( this, arguments ); + event.type = fix; + } + return ret; + } + }; +} ); + +jQuery.fn.extend( { + + on: function( types, selector, data, fn ) { + return on( this, types, selector, data, fn ); + }, + one: function( types, selector, data, fn ) { + return on( this, types, selector, data, fn, 1 ); + }, + off: function( types, selector, fn ) { + var handleObj, type; + if ( types && types.preventDefault && types.handleObj ) { + + // ( event ) dispatched jQuery.Event + handleObj = types.handleObj; + jQuery( types.delegateTarget ).off( + handleObj.namespace ? + handleObj.origType + "." + handleObj.namespace : + handleObj.origType, + handleObj.selector, + handleObj.handler + ); + return this; + } + if ( typeof types === "object" ) { + + // ( types-object [, selector] ) + for ( type in types ) { + this.off( type, selector, types[ type ] ); + } + return this; + } + if ( selector === false || typeof selector === "function" ) { + + // ( types [, fn] ) + fn = selector; + selector = undefined; + } + if ( fn === false ) { + fn = returnFalse; + } + return this.each( function() { + jQuery.event.remove( this, types, fn, selector ); + } ); + } +} ); + + +var + + // Support: IE <=10 - 11, Edge 12 - 13 only + // In IE/Edge using regex groups here causes severe slowdowns. + // See https://connect.microsoft.com/IE/feedback/details/1736512/ + rnoInnerhtml = /\s*$/g; + +// Prefer a tbody over its parent table for containing new rows +function manipulationTarget( elem, content ) { + if ( nodeName( elem, "table" ) && + nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ) { + + return jQuery( elem ).children( "tbody" )[ 0 ] || elem; + } + + return elem; +} + +// Replace/restore the type attribute of script elements for safe DOM manipulation +function disableScript( elem ) { + elem.type = ( elem.getAttribute( "type" ) !== null ) + "/" + elem.type; + return elem; +} +function restoreScript( elem ) { + if ( ( elem.type || "" ).slice( 0, 5 ) === "true/" ) { + elem.type = elem.type.slice( 5 ); + } else { + elem.removeAttribute( "type" ); + } + + return elem; +} + +function cloneCopyEvent( src, dest ) { + var i, l, type, pdataOld, udataOld, udataCur, events; + + if ( dest.nodeType !== 1 ) { + return; + } + + // 1. Copy private data: events, handlers, etc. + if ( dataPriv.hasData( src ) ) { + pdataOld = dataPriv.get( src ); + events = pdataOld.events; + + if ( events ) { + dataPriv.remove( dest, "handle events" ); + + for ( type in events ) { + for ( i = 0, l = events[ type ].length; i < l; i++ ) { + jQuery.event.add( dest, type, events[ type ][ i ] ); + } + } + } + } + + // 2. Copy user data + if ( dataUser.hasData( src ) ) { + udataOld = dataUser.access( src ); + udataCur = jQuery.extend( {}, udataOld ); + + dataUser.set( dest, udataCur ); + } +} + +// Fix IE bugs, see support tests +function fixInput( src, dest ) { + var nodeName = dest.nodeName.toLowerCase(); + + // Fails to persist the checked state of a cloned checkbox or radio button. + if ( nodeName === "input" && rcheckableType.test( src.type ) ) { + dest.checked = src.checked; + + // Fails to return the selected option to the default selected state when cloning options + } else if ( nodeName === "input" || nodeName === "textarea" ) { + dest.defaultValue = src.defaultValue; + } +} + +function domManip( collection, args, callback, ignored ) { + + // Flatten any nested arrays + args = flat( args ); + + var fragment, first, scripts, hasScripts, node, doc, + i = 0, + l = collection.length, + iNoClone = l - 1, + value = args[ 0 ], + valueIsFunction = isFunction( value ); + + // We can't cloneNode fragments that contain checked, in WebKit + if ( valueIsFunction || + ( l > 1 && typeof value === "string" && + !support.checkClone && rchecked.test( value ) ) ) { + return collection.each( function( index ) { + var self = collection.eq( index ); + if ( valueIsFunction ) { + args[ 0 ] = value.call( this, index, self.html() ); + } + domManip( self, args, callback, ignored ); + } ); + } + + if ( l ) { + fragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored ); + first = fragment.firstChild; + + if ( fragment.childNodes.length === 1 ) { + fragment = first; + } + + // Require either new content or an interest in ignored elements to invoke the callback + if ( first || ignored ) { + scripts = jQuery.map( getAll( fragment, "script" ), disableScript ); + hasScripts = scripts.length; + + // Use the original fragment for the last item + // instead of the first because it can end up + // being emptied incorrectly in certain situations (#8070). + for ( ; i < l; i++ ) { + node = fragment; + + if ( i !== iNoClone ) { + node = jQuery.clone( node, true, true ); + + // Keep references to cloned scripts for later restoration + if ( hasScripts ) { + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( scripts, getAll( node, "script" ) ); + } + } + + callback.call( collection[ i ], node, i ); + } + + if ( hasScripts ) { + doc = scripts[ scripts.length - 1 ].ownerDocument; + + // Reenable scripts + jQuery.map( scripts, restoreScript ); + + // Evaluate executable scripts on first document insertion + for ( i = 0; i < hasScripts; i++ ) { + node = scripts[ i ]; + if ( rscriptType.test( node.type || "" ) && + !dataPriv.access( node, "globalEval" ) && + jQuery.contains( doc, node ) ) { + + if ( node.src && ( node.type || "" ).toLowerCase() !== "module" ) { + + // Optional AJAX dependency, but won't run scripts if not present + if ( jQuery._evalUrl && !node.noModule ) { + jQuery._evalUrl( node.src, { + nonce: node.nonce || node.getAttribute( "nonce" ) + }, doc ); + } + } else { + DOMEval( node.textContent.replace( rcleanScript, "" ), node, doc ); + } + } + } + } + } + } + + return collection; +} + +function remove( elem, selector, keepData ) { + var node, + nodes = selector ? jQuery.filter( selector, elem ) : elem, + i = 0; + + for ( ; ( node = nodes[ i ] ) != null; i++ ) { + if ( !keepData && node.nodeType === 1 ) { + jQuery.cleanData( getAll( node ) ); + } + + if ( node.parentNode ) { + if ( keepData && isAttached( node ) ) { + setGlobalEval( getAll( node, "script" ) ); + } + node.parentNode.removeChild( node ); + } + } + + return elem; +} + +jQuery.extend( { + htmlPrefilter: function( html ) { + return html; + }, + + clone: function( elem, dataAndEvents, deepDataAndEvents ) { + var i, l, srcElements, destElements, + clone = elem.cloneNode( true ), + inPage = isAttached( elem ); + + // Fix IE cloning issues + if ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) && + !jQuery.isXMLDoc( elem ) ) { + + // We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2 + destElements = getAll( clone ); + srcElements = getAll( elem ); + + for ( i = 0, l = srcElements.length; i < l; i++ ) { + fixInput( srcElements[ i ], destElements[ i ] ); + } + } + + // Copy the events from the original to the clone + if ( dataAndEvents ) { + if ( deepDataAndEvents ) { + srcElements = srcElements || getAll( elem ); + destElements = destElements || getAll( clone ); + + for ( i = 0, l = srcElements.length; i < l; i++ ) { + cloneCopyEvent( srcElements[ i ], destElements[ i ] ); + } + } else { + cloneCopyEvent( elem, clone ); + } + } + + // Preserve script evaluation history + destElements = getAll( clone, "script" ); + if ( destElements.length > 0 ) { + setGlobalEval( destElements, !inPage && getAll( elem, "script" ) ); + } + + // Return the cloned set + return clone; + }, + + cleanData: function( elems ) { + var data, elem, type, + special = jQuery.event.special, + i = 0; + + for ( ; ( elem = elems[ i ] ) !== undefined; i++ ) { + if ( acceptData( elem ) ) { + if ( ( data = elem[ dataPriv.expando ] ) ) { + if ( data.events ) { + for ( type in data.events ) { + if ( special[ type ] ) { + jQuery.event.remove( elem, type ); + + // This is a shortcut to avoid jQuery.event.remove's overhead + } else { + jQuery.removeEvent( elem, type, data.handle ); + } + } + } + + // Support: Chrome <=35 - 45+ + // Assign undefined instead of using delete, see Data#remove + elem[ dataPriv.expando ] = undefined; + } + if ( elem[ dataUser.expando ] ) { + + // Support: Chrome <=35 - 45+ + // Assign undefined instead of using delete, see Data#remove + elem[ dataUser.expando ] = undefined; + } + } + } + } +} ); + +jQuery.fn.extend( { + detach: function( selector ) { + return remove( this, selector, true ); + }, + + remove: function( selector ) { + return remove( this, selector ); + }, + + text: function( value ) { + return access( this, function( value ) { + return value === undefined ? + jQuery.text( this ) : + this.empty().each( function() { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + this.textContent = value; + } + } ); + }, null, value, arguments.length ); + }, + + append: function() { + return domManip( this, arguments, function( elem ) { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + var target = manipulationTarget( this, elem ); + target.appendChild( elem ); + } + } ); + }, + + prepend: function() { + return domManip( this, arguments, function( elem ) { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + var target = manipulationTarget( this, elem ); + target.insertBefore( elem, target.firstChild ); + } + } ); + }, + + before: function() { + return domManip( this, arguments, function( elem ) { + if ( this.parentNode ) { + this.parentNode.insertBefore( elem, this ); + } + } ); + }, + + after: function() { + return domManip( this, arguments, function( elem ) { + if ( this.parentNode ) { + this.parentNode.insertBefore( elem, this.nextSibling ); + } + } ); + }, + + empty: function() { + var elem, + i = 0; + + for ( ; ( elem = this[ i ] ) != null; i++ ) { + if ( elem.nodeType === 1 ) { + + // Prevent memory leaks + jQuery.cleanData( getAll( elem, false ) ); + + // Remove any remaining nodes + elem.textContent = ""; + } + } + + return this; + }, + + clone: function( dataAndEvents, deepDataAndEvents ) { + dataAndEvents = dataAndEvents == null ? false : dataAndEvents; + deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents; + + return this.map( function() { + return jQuery.clone( this, dataAndEvents, deepDataAndEvents ); + } ); + }, + + html: function( value ) { + return access( this, function( value ) { + var elem = this[ 0 ] || {}, + i = 0, + l = this.length; + + if ( value === undefined && elem.nodeType === 1 ) { + return elem.innerHTML; + } + + // See if we can take a shortcut and just use innerHTML + if ( typeof value === "string" && !rnoInnerhtml.test( value ) && + !wrapMap[ ( rtagName.exec( value ) || [ "", "" ] )[ 1 ].toLowerCase() ] ) { + + value = jQuery.htmlPrefilter( value ); + + try { + for ( ; i < l; i++ ) { + elem = this[ i ] || {}; + + // Remove element nodes and prevent memory leaks + if ( elem.nodeType === 1 ) { + jQuery.cleanData( getAll( elem, false ) ); + elem.innerHTML = value; + } + } + + elem = 0; + + // If using innerHTML throws an exception, use the fallback method + } catch ( e ) {} + } + + if ( elem ) { + this.empty().append( value ); + } + }, null, value, arguments.length ); + }, + + replaceWith: function() { + var ignored = []; + + // Make the changes, replacing each non-ignored context element with the new content + return domManip( this, arguments, function( elem ) { + var parent = this.parentNode; + + if ( jQuery.inArray( this, ignored ) < 0 ) { + jQuery.cleanData( getAll( this ) ); + if ( parent ) { + parent.replaceChild( elem, this ); + } + } + + // Force callback invocation + }, ignored ); + } +} ); + +jQuery.each( { + appendTo: "append", + prependTo: "prepend", + insertBefore: "before", + insertAfter: "after", + replaceAll: "replaceWith" +}, function( name, original ) { + jQuery.fn[ name ] = function( selector ) { + var elems, + ret = [], + insert = jQuery( selector ), + last = insert.length - 1, + i = 0; + + for ( ; i <= last; i++ ) { + elems = i === last ? this : this.clone( true ); + jQuery( insert[ i ] )[ original ]( elems ); + + // Support: Android <=4.0 only, PhantomJS 1 only + // .get() because push.apply(_, arraylike) throws on ancient WebKit + push.apply( ret, elems.get() ); + } + + return this.pushStack( ret ); + }; +} ); +var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" ); + +var getStyles = function( elem ) { + + // Support: IE <=11 only, Firefox <=30 (#15098, #14150) + // IE throws on elements created in popups + // FF meanwhile throws on frame elements through "defaultView.getComputedStyle" + var view = elem.ownerDocument.defaultView; + + if ( !view || !view.opener ) { + view = window; + } + + return view.getComputedStyle( elem ); + }; + +var swap = function( elem, options, callback ) { + var ret, name, + old = {}; + + // Remember the old values, and insert the new ones + for ( name in options ) { + old[ name ] = elem.style[ name ]; + elem.style[ name ] = options[ name ]; + } + + ret = callback.call( elem ); + + // Revert the old values + for ( name in options ) { + elem.style[ name ] = old[ name ]; + } + + return ret; +}; + + +var rboxStyle = new RegExp( cssExpand.join( "|" ), "i" ); + + + +( function() { + + // Executing both pixelPosition & boxSizingReliable tests require only one layout + // so they're executed at the same time to save the second computation. + function computeStyleTests() { + + // This is a singleton, we need to execute it only once + if ( !div ) { + return; + } + + container.style.cssText = "position:absolute;left:-11111px;width:60px;" + + "margin-top:1px;padding:0;border:0"; + div.style.cssText = + "position:relative;display:block;box-sizing:border-box;overflow:scroll;" + + "margin:auto;border:1px;padding:1px;" + + "width:60%;top:1%"; + documentElement.appendChild( container ).appendChild( div ); + + var divStyle = window.getComputedStyle( div ); + pixelPositionVal = divStyle.top !== "1%"; + + // Support: Android 4.0 - 4.3 only, Firefox <=3 - 44 + reliableMarginLeftVal = roundPixelMeasures( divStyle.marginLeft ) === 12; + + // Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3 + // Some styles come back with percentage values, even though they shouldn't + div.style.right = "60%"; + pixelBoxStylesVal = roundPixelMeasures( divStyle.right ) === 36; + + // Support: IE 9 - 11 only + // Detect misreporting of content dimensions for box-sizing:border-box elements + boxSizingReliableVal = roundPixelMeasures( divStyle.width ) === 36; + + // Support: IE 9 only + // Detect overflow:scroll screwiness (gh-3699) + // Support: Chrome <=64 + // Don't get tricked when zoom affects offsetWidth (gh-4029) + div.style.position = "absolute"; + scrollboxSizeVal = roundPixelMeasures( div.offsetWidth / 3 ) === 12; + + documentElement.removeChild( container ); + + // Nullify the div so it wouldn't be stored in the memory and + // it will also be a sign that checks already performed + div = null; + } + + function roundPixelMeasures( measure ) { + return Math.round( parseFloat( measure ) ); + } + + var pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal, + reliableTrDimensionsVal, reliableMarginLeftVal, + container = document.createElement( "div" ), + div = document.createElement( "div" ); + + // Finish early in limited (non-browser) environments + if ( !div.style ) { + return; + } + + // Support: IE <=9 - 11 only + // Style of cloned element affects source element cloned (#8908) + div.style.backgroundClip = "content-box"; + div.cloneNode( true ).style.backgroundClip = ""; + support.clearCloneStyle = div.style.backgroundClip === "content-box"; + + jQuery.extend( support, { + boxSizingReliable: function() { + computeStyleTests(); + return boxSizingReliableVal; + }, + pixelBoxStyles: function() { + computeStyleTests(); + return pixelBoxStylesVal; + }, + pixelPosition: function() { + computeStyleTests(); + return pixelPositionVal; + }, + reliableMarginLeft: function() { + computeStyleTests(); + return reliableMarginLeftVal; + }, + scrollboxSize: function() { + computeStyleTests(); + return scrollboxSizeVal; + }, + + // Support: IE 9 - 11+, Edge 15 - 18+ + // IE/Edge misreport `getComputedStyle` of table rows with width/height + // set in CSS while `offset*` properties report correct values. + // Behavior in IE 9 is more subtle than in newer versions & it passes + // some versions of this test; make sure not to make it pass there! + // + // Support: Firefox 70+ + // Only Firefox includes border widths + // in computed dimensions. (gh-4529) + reliableTrDimensions: function() { + var table, tr, trChild, trStyle; + if ( reliableTrDimensionsVal == null ) { + table = document.createElement( "table" ); + tr = document.createElement( "tr" ); + trChild = document.createElement( "div" ); + + table.style.cssText = "position:absolute;left:-11111px;border-collapse:separate"; + tr.style.cssText = "border:1px solid"; + + // Support: Chrome 86+ + // Height set through cssText does not get applied. + // Computed height then comes back as 0. + tr.style.height = "1px"; + trChild.style.height = "9px"; + + // Support: Android 8 Chrome 86+ + // In our bodyBackground.html iframe, + // display for all div elements is set to "inline", + // which causes a problem only in Android 8 Chrome 86. + // Ensuring the div is display: block + // gets around this issue. + trChild.style.display = "block"; + + documentElement + .appendChild( table ) + .appendChild( tr ) + .appendChild( trChild ); + + trStyle = window.getComputedStyle( tr ); + reliableTrDimensionsVal = ( parseInt( trStyle.height, 10 ) + + parseInt( trStyle.borderTopWidth, 10 ) + + parseInt( trStyle.borderBottomWidth, 10 ) ) === tr.offsetHeight; + + documentElement.removeChild( table ); + } + return reliableTrDimensionsVal; + } + } ); +} )(); + + +function curCSS( elem, name, computed ) { + var width, minWidth, maxWidth, ret, + + // Support: Firefox 51+ + // Retrieving style before computed somehow + // fixes an issue with getting wrong values + // on detached elements + style = elem.style; + + computed = computed || getStyles( elem ); + + // getPropertyValue is needed for: + // .css('filter') (IE 9 only, #12537) + // .css('--customProperty) (#3144) + if ( computed ) { + ret = computed.getPropertyValue( name ) || computed[ name ]; + + if ( ret === "" && !isAttached( elem ) ) { + ret = jQuery.style( elem, name ); + } + + // A tribute to the "awesome hack by Dean Edwards" + // Android Browser returns percentage for some values, + // but width seems to be reliably pixels. + // This is against the CSSOM draft spec: + // https://drafts.csswg.org/cssom/#resolved-values + if ( !support.pixelBoxStyles() && rnumnonpx.test( ret ) && rboxStyle.test( name ) ) { + + // Remember the original values + width = style.width; + minWidth = style.minWidth; + maxWidth = style.maxWidth; + + // Put in the new values to get a computed value out + style.minWidth = style.maxWidth = style.width = ret; + ret = computed.width; + + // Revert the changed values + style.width = width; + style.minWidth = minWidth; + style.maxWidth = maxWidth; + } + } + + return ret !== undefined ? + + // Support: IE <=9 - 11 only + // IE returns zIndex value as an integer. + ret + "" : + ret; +} + + +function addGetHookIf( conditionFn, hookFn ) { + + // Define the hook, we'll check on the first run if it's really needed. + return { + get: function() { + if ( conditionFn() ) { + + // Hook not needed (or it's not possible to use it due + // to missing dependency), remove it. + delete this.get; + return; + } + + // Hook needed; redefine it so that the support test is not executed again. + return ( this.get = hookFn ).apply( this, arguments ); + } + }; +} + + +var cssPrefixes = [ "Webkit", "Moz", "ms" ], + emptyStyle = document.createElement( "div" ).style, + vendorProps = {}; + +// Return a vendor-prefixed property or undefined +function vendorPropName( name ) { + + // Check for vendor prefixed names + var capName = name[ 0 ].toUpperCase() + name.slice( 1 ), + i = cssPrefixes.length; + + while ( i-- ) { + name = cssPrefixes[ i ] + capName; + if ( name in emptyStyle ) { + return name; + } + } +} + +// Return a potentially-mapped jQuery.cssProps or vendor prefixed property +function finalPropName( name ) { + var final = jQuery.cssProps[ name ] || vendorProps[ name ]; + + if ( final ) { + return final; + } + if ( name in emptyStyle ) { + return name; + } + return vendorProps[ name ] = vendorPropName( name ) || name; +} + + +var + + // Swappable if display is none or starts with table + // except "table", "table-cell", or "table-caption" + // See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display + rdisplayswap = /^(none|table(?!-c[ea]).+)/, + rcustomProp = /^--/, + cssShow = { position: "absolute", visibility: "hidden", display: "block" }, + cssNormalTransform = { + letterSpacing: "0", + fontWeight: "400" + }; + +function setPositiveNumber( _elem, value, subtract ) { + + // Any relative (+/-) values have already been + // normalized at this point + var matches = rcssNum.exec( value ); + return matches ? + + // Guard against undefined "subtract", e.g., when used as in cssHooks + Math.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || "px" ) : + value; +} + +function boxModelAdjustment( elem, dimension, box, isBorderBox, styles, computedVal ) { + var i = dimension === "width" ? 1 : 0, + extra = 0, + delta = 0; + + // Adjustment may not be necessary + if ( box === ( isBorderBox ? "border" : "content" ) ) { + return 0; + } + + for ( ; i < 4; i += 2 ) { + + // Both box models exclude margin + if ( box === "margin" ) { + delta += jQuery.css( elem, box + cssExpand[ i ], true, styles ); + } + + // If we get here with a content-box, we're seeking "padding" or "border" or "margin" + if ( !isBorderBox ) { + + // Add padding + delta += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); + + // For "border" or "margin", add border + if ( box !== "padding" ) { + delta += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + + // But still keep track of it otherwise + } else { + extra += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + } + + // If we get here with a border-box (content + padding + border), we're seeking "content" or + // "padding" or "margin" + } else { + + // For "content", subtract padding + if ( box === "content" ) { + delta -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); + } + + // For "content" or "padding", subtract border + if ( box !== "margin" ) { + delta -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + } + } + } + + // Account for positive content-box scroll gutter when requested by providing computedVal + if ( !isBorderBox && computedVal >= 0 ) { + + // offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border + // Assuming integer scroll gutter, subtract the rest and round down + delta += Math.max( 0, Math.ceil( + elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] - + computedVal - + delta - + extra - + 0.5 + + // If offsetWidth/offsetHeight is unknown, then we can't determine content-box scroll gutter + // Use an explicit zero to avoid NaN (gh-3964) + ) ) || 0; + } + + return delta; +} + +function getWidthOrHeight( elem, dimension, extra ) { + + // Start with computed style + var styles = getStyles( elem ), + + // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-4322). + // Fake content-box until we know it's needed to know the true value. + boxSizingNeeded = !support.boxSizingReliable() || extra, + isBorderBox = boxSizingNeeded && + jQuery.css( elem, "boxSizing", false, styles ) === "border-box", + valueIsBorderBox = isBorderBox, + + val = curCSS( elem, dimension, styles ), + offsetProp = "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ); + + // Support: Firefox <=54 + // Return a confounding non-pixel value or feign ignorance, as appropriate. + if ( rnumnonpx.test( val ) ) { + if ( !extra ) { + return val; + } + val = "auto"; + } + + + // Support: IE 9 - 11 only + // Use offsetWidth/offsetHeight for when box sizing is unreliable. + // In those cases, the computed value can be trusted to be border-box. + if ( ( !support.boxSizingReliable() && isBorderBox || + + // Support: IE 10 - 11+, Edge 15 - 18+ + // IE/Edge misreport `getComputedStyle` of table rows with width/height + // set in CSS while `offset*` properties report correct values. + // Interestingly, in some cases IE 9 doesn't suffer from this issue. + !support.reliableTrDimensions() && nodeName( elem, "tr" ) || + + // Fall back to offsetWidth/offsetHeight when value is "auto" + // This happens for inline elements with no explicit setting (gh-3571) + val === "auto" || + + // Support: Android <=4.1 - 4.3 only + // Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602) + !parseFloat( val ) && jQuery.css( elem, "display", false, styles ) === "inline" ) && + + // Make sure the element is visible & connected + elem.getClientRects().length ) { + + isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box"; + + // Where available, offsetWidth/offsetHeight approximate border box dimensions. + // Where not available (e.g., SVG), assume unreliable box-sizing and interpret the + // retrieved value as a content box dimension. + valueIsBorderBox = offsetProp in elem; + if ( valueIsBorderBox ) { + val = elem[ offsetProp ]; + } + } + + // Normalize "" and auto + val = parseFloat( val ) || 0; + + // Adjust for the element's box model + return ( val + + boxModelAdjustment( + elem, + dimension, + extra || ( isBorderBox ? "border" : "content" ), + valueIsBorderBox, + styles, + + // Provide the current computed size to request scroll gutter calculation (gh-3589) + val + ) + ) + "px"; +} + +jQuery.extend( { + + // Add in style property hooks for overriding the default + // behavior of getting and setting a style property + cssHooks: { + opacity: { + get: function( elem, computed ) { + if ( computed ) { + + // We should always get a number back from opacity + var ret = curCSS( elem, "opacity" ); + return ret === "" ? "1" : ret; + } + } + } + }, + + // Don't automatically add "px" to these possibly-unitless properties + cssNumber: { + "animationIterationCount": true, + "columnCount": true, + "fillOpacity": true, + "flexGrow": true, + "flexShrink": true, + "fontWeight": true, + "gridArea": true, + "gridColumn": true, + "gridColumnEnd": true, + "gridColumnStart": true, + "gridRow": true, + "gridRowEnd": true, + "gridRowStart": true, + "lineHeight": true, + "opacity": true, + "order": true, + "orphans": true, + "widows": true, + "zIndex": true, + "zoom": true + }, + + // Add in properties whose names you wish to fix before + // setting or getting the value + cssProps: {}, + + // Get and set the style property on a DOM Node + style: function( elem, name, value, extra ) { + + // Don't set styles on text and comment nodes + if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) { + return; + } + + // Make sure that we're working with the right name + var ret, type, hooks, + origName = camelCase( name ), + isCustomProp = rcustomProp.test( name ), + style = elem.style; + + // Make sure that we're working with the right name. We don't + // want to query the value if it is a CSS custom property + // since they are user-defined. + if ( !isCustomProp ) { + name = finalPropName( origName ); + } + + // Gets hook for the prefixed version, then unprefixed version + hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; + + // Check if we're setting a value + if ( value !== undefined ) { + type = typeof value; + + // Convert "+=" or "-=" to relative numbers (#7345) + if ( type === "string" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) { + value = adjustCSS( elem, name, ret ); + + // Fixes bug #9237 + type = "number"; + } + + // Make sure that null and NaN values aren't set (#7116) + if ( value == null || value !== value ) { + return; + } + + // If a number was passed in, add the unit (except for certain CSS properties) + // The isCustomProp check can be removed in jQuery 4.0 when we only auto-append + // "px" to a few hardcoded values. + if ( type === "number" && !isCustomProp ) { + value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" ); + } + + // background-* props affect original clone's values + if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) { + style[ name ] = "inherit"; + } + + // If a hook was provided, use that value, otherwise just set the specified value + if ( !hooks || !( "set" in hooks ) || + ( value = hooks.set( elem, value, extra ) ) !== undefined ) { + + if ( isCustomProp ) { + style.setProperty( name, value ); + } else { + style[ name ] = value; + } + } + + } else { + + // If a hook was provided get the non-computed value from there + if ( hooks && "get" in hooks && + ( ret = hooks.get( elem, false, extra ) ) !== undefined ) { + + return ret; + } + + // Otherwise just get the value from the style object + return style[ name ]; + } + }, + + css: function( elem, name, extra, styles ) { + var val, num, hooks, + origName = camelCase( name ), + isCustomProp = rcustomProp.test( name ); + + // Make sure that we're working with the right name. We don't + // want to modify the value if it is a CSS custom property + // since they are user-defined. + if ( !isCustomProp ) { + name = finalPropName( origName ); + } + + // Try prefixed name followed by the unprefixed name + hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; + + // If a hook was provided get the computed value from there + if ( hooks && "get" in hooks ) { + val = hooks.get( elem, true, extra ); + } + + // Otherwise, if a way to get the computed value exists, use that + if ( val === undefined ) { + val = curCSS( elem, name, styles ); + } + + // Convert "normal" to computed value + if ( val === "normal" && name in cssNormalTransform ) { + val = cssNormalTransform[ name ]; + } + + // Make numeric if forced or a qualifier was provided and val looks numeric + if ( extra === "" || extra ) { + num = parseFloat( val ); + return extra === true || isFinite( num ) ? num || 0 : val; + } + + return val; + } +} ); + +jQuery.each( [ "height", "width" ], function( _i, dimension ) { + jQuery.cssHooks[ dimension ] = { + get: function( elem, computed, extra ) { + if ( computed ) { + + // Certain elements can have dimension info if we invisibly show them + // but it must have a current display style that would benefit + return rdisplayswap.test( jQuery.css( elem, "display" ) ) && + + // Support: Safari 8+ + // Table columns in Safari have non-zero offsetWidth & zero + // getBoundingClientRect().width unless display is changed. + // Support: IE <=11 only + // Running getBoundingClientRect on a disconnected node + // in IE throws an error. + ( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ? + swap( elem, cssShow, function() { + return getWidthOrHeight( elem, dimension, extra ); + } ) : + getWidthOrHeight( elem, dimension, extra ); + } + }, + + set: function( elem, value, extra ) { + var matches, + styles = getStyles( elem ), + + // Only read styles.position if the test has a chance to fail + // to avoid forcing a reflow. + scrollboxSizeBuggy = !support.scrollboxSize() && + styles.position === "absolute", + + // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-3991) + boxSizingNeeded = scrollboxSizeBuggy || extra, + isBorderBox = boxSizingNeeded && + jQuery.css( elem, "boxSizing", false, styles ) === "border-box", + subtract = extra ? + boxModelAdjustment( + elem, + dimension, + extra, + isBorderBox, + styles + ) : + 0; + + // Account for unreliable border-box dimensions by comparing offset* to computed and + // faking a content-box to get border and padding (gh-3699) + if ( isBorderBox && scrollboxSizeBuggy ) { + subtract -= Math.ceil( + elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] - + parseFloat( styles[ dimension ] ) - + boxModelAdjustment( elem, dimension, "border", false, styles ) - + 0.5 + ); + } + + // Convert to pixels if value adjustment is needed + if ( subtract && ( matches = rcssNum.exec( value ) ) && + ( matches[ 3 ] || "px" ) !== "px" ) { + + elem.style[ dimension ] = value; + value = jQuery.css( elem, dimension ); + } + + return setPositiveNumber( elem, value, subtract ); + } + }; +} ); + +jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft, + function( elem, computed ) { + if ( computed ) { + return ( parseFloat( curCSS( elem, "marginLeft" ) ) || + elem.getBoundingClientRect().left - + swap( elem, { marginLeft: 0 }, function() { + return elem.getBoundingClientRect().left; + } ) + ) + "px"; + } + } +); + +// These hooks are used by animate to expand properties +jQuery.each( { + margin: "", + padding: "", + border: "Width" +}, function( prefix, suffix ) { + jQuery.cssHooks[ prefix + suffix ] = { + expand: function( value ) { + var i = 0, + expanded = {}, + + // Assumes a single number if not a string + parts = typeof value === "string" ? value.split( " " ) : [ value ]; + + for ( ; i < 4; i++ ) { + expanded[ prefix + cssExpand[ i ] + suffix ] = + parts[ i ] || parts[ i - 2 ] || parts[ 0 ]; + } + + return expanded; + } + }; + + if ( prefix !== "margin" ) { + jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber; + } +} ); + +jQuery.fn.extend( { + css: function( name, value ) { + return access( this, function( elem, name, value ) { + var styles, len, + map = {}, + i = 0; + + if ( Array.isArray( name ) ) { + styles = getStyles( elem ); + len = name.length; + + for ( ; i < len; i++ ) { + map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles ); + } + + return map; + } + + return value !== undefined ? + jQuery.style( elem, name, value ) : + jQuery.css( elem, name ); + }, name, value, arguments.length > 1 ); + } +} ); + + +function Tween( elem, options, prop, end, easing ) { + return new Tween.prototype.init( elem, options, prop, end, easing ); +} +jQuery.Tween = Tween; + +Tween.prototype = { + constructor: Tween, + init: function( elem, options, prop, end, easing, unit ) { + this.elem = elem; + this.prop = prop; + this.easing = easing || jQuery.easing._default; + this.options = options; + this.start = this.now = this.cur(); + this.end = end; + this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" ); + }, + cur: function() { + var hooks = Tween.propHooks[ this.prop ]; + + return hooks && hooks.get ? + hooks.get( this ) : + Tween.propHooks._default.get( this ); + }, + run: function( percent ) { + var eased, + hooks = Tween.propHooks[ this.prop ]; + + if ( this.options.duration ) { + this.pos = eased = jQuery.easing[ this.easing ]( + percent, this.options.duration * percent, 0, 1, this.options.duration + ); + } else { + this.pos = eased = percent; + } + this.now = ( this.end - this.start ) * eased + this.start; + + if ( this.options.step ) { + this.options.step.call( this.elem, this.now, this ); + } + + if ( hooks && hooks.set ) { + hooks.set( this ); + } else { + Tween.propHooks._default.set( this ); + } + return this; + } +}; + +Tween.prototype.init.prototype = Tween.prototype; + +Tween.propHooks = { + _default: { + get: function( tween ) { + var result; + + // Use a property on the element directly when it is not a DOM element, + // or when there is no matching style property that exists. + if ( tween.elem.nodeType !== 1 || + tween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) { + return tween.elem[ tween.prop ]; + } + + // Passing an empty string as a 3rd parameter to .css will automatically + // attempt a parseFloat and fallback to a string if the parse fails. + // Simple values such as "10px" are parsed to Float; + // complex values such as "rotate(1rad)" are returned as-is. + result = jQuery.css( tween.elem, tween.prop, "" ); + + // Empty strings, null, undefined and "auto" are converted to 0. + return !result || result === "auto" ? 0 : result; + }, + set: function( tween ) { + + // Use step hook for back compat. + // Use cssHook if its there. + // Use .style if available and use plain properties where available. + if ( jQuery.fx.step[ tween.prop ] ) { + jQuery.fx.step[ tween.prop ]( tween ); + } else if ( tween.elem.nodeType === 1 && ( + jQuery.cssHooks[ tween.prop ] || + tween.elem.style[ finalPropName( tween.prop ) ] != null ) ) { + jQuery.style( tween.elem, tween.prop, tween.now + tween.unit ); + } else { + tween.elem[ tween.prop ] = tween.now; + } + } + } +}; + +// Support: IE <=9 only +// Panic based approach to setting things on disconnected nodes +Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = { + set: function( tween ) { + if ( tween.elem.nodeType && tween.elem.parentNode ) { + tween.elem[ tween.prop ] = tween.now; + } + } +}; + +jQuery.easing = { + linear: function( p ) { + return p; + }, + swing: function( p ) { + return 0.5 - Math.cos( p * Math.PI ) / 2; + }, + _default: "swing" +}; + +jQuery.fx = Tween.prototype.init; + +// Back compat <1.8 extension point +jQuery.fx.step = {}; + + + + +var + fxNow, inProgress, + rfxtypes = /^(?:toggle|show|hide)$/, + rrun = /queueHooks$/; + +function schedule() { + if ( inProgress ) { + if ( document.hidden === false && window.requestAnimationFrame ) { + window.requestAnimationFrame( schedule ); + } else { + window.setTimeout( schedule, jQuery.fx.interval ); + } + + jQuery.fx.tick(); + } +} + +// Animations created synchronously will run synchronously +function createFxNow() { + window.setTimeout( function() { + fxNow = undefined; + } ); + return ( fxNow = Date.now() ); +} + +// Generate parameters to create a standard animation +function genFx( type, includeWidth ) { + var which, + i = 0, + attrs = { height: type }; + + // If we include width, step value is 1 to do all cssExpand values, + // otherwise step value is 2 to skip over Left and Right + includeWidth = includeWidth ? 1 : 0; + for ( ; i < 4; i += 2 - includeWidth ) { + which = cssExpand[ i ]; + attrs[ "margin" + which ] = attrs[ "padding" + which ] = type; + } + + if ( includeWidth ) { + attrs.opacity = attrs.width = type; + } + + return attrs; +} + +function createTween( value, prop, animation ) { + var tween, + collection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ "*" ] ), + index = 0, + length = collection.length; + for ( ; index < length; index++ ) { + if ( ( tween = collection[ index ].call( animation, prop, value ) ) ) { + + // We're done with this property + return tween; + } + } +} + +function defaultPrefilter( elem, props, opts ) { + var prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display, + isBox = "width" in props || "height" in props, + anim = this, + orig = {}, + style = elem.style, + hidden = elem.nodeType && isHiddenWithinTree( elem ), + dataShow = dataPriv.get( elem, "fxshow" ); + + // Queue-skipping animations hijack the fx hooks + if ( !opts.queue ) { + hooks = jQuery._queueHooks( elem, "fx" ); + if ( hooks.unqueued == null ) { + hooks.unqueued = 0; + oldfire = hooks.empty.fire; + hooks.empty.fire = function() { + if ( !hooks.unqueued ) { + oldfire(); + } + }; + } + hooks.unqueued++; + + anim.always( function() { + + // Ensure the complete handler is called before this completes + anim.always( function() { + hooks.unqueued--; + if ( !jQuery.queue( elem, "fx" ).length ) { + hooks.empty.fire(); + } + } ); + } ); + } + + // Detect show/hide animations + for ( prop in props ) { + value = props[ prop ]; + if ( rfxtypes.test( value ) ) { + delete props[ prop ]; + toggle = toggle || value === "toggle"; + if ( value === ( hidden ? "hide" : "show" ) ) { + + // Pretend to be hidden if this is a "show" and + // there is still data from a stopped show/hide + if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) { + hidden = true; + + // Ignore all other no-op show/hide data + } else { + continue; + } + } + orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop ); + } + } + + // Bail out if this is a no-op like .hide().hide() + propTween = !jQuery.isEmptyObject( props ); + if ( !propTween && jQuery.isEmptyObject( orig ) ) { + return; + } + + // Restrict "overflow" and "display" styles during box animations + if ( isBox && elem.nodeType === 1 ) { + + // Support: IE <=9 - 11, Edge 12 - 15 + // Record all 3 overflow attributes because IE does not infer the shorthand + // from identically-valued overflowX and overflowY and Edge just mirrors + // the overflowX value there. + opts.overflow = [ style.overflow, style.overflowX, style.overflowY ]; + + // Identify a display type, preferring old show/hide data over the CSS cascade + restoreDisplay = dataShow && dataShow.display; + if ( restoreDisplay == null ) { + restoreDisplay = dataPriv.get( elem, "display" ); + } + display = jQuery.css( elem, "display" ); + if ( display === "none" ) { + if ( restoreDisplay ) { + display = restoreDisplay; + } else { + + // Get nonempty value(s) by temporarily forcing visibility + showHide( [ elem ], true ); + restoreDisplay = elem.style.display || restoreDisplay; + display = jQuery.css( elem, "display" ); + showHide( [ elem ] ); + } + } + + // Animate inline elements as inline-block + if ( display === "inline" || display === "inline-block" && restoreDisplay != null ) { + if ( jQuery.css( elem, "float" ) === "none" ) { + + // Restore the original display value at the end of pure show/hide animations + if ( !propTween ) { + anim.done( function() { + style.display = restoreDisplay; + } ); + if ( restoreDisplay == null ) { + display = style.display; + restoreDisplay = display === "none" ? "" : display; + } + } + style.display = "inline-block"; + } + } + } + + if ( opts.overflow ) { + style.overflow = "hidden"; + anim.always( function() { + style.overflow = opts.overflow[ 0 ]; + style.overflowX = opts.overflow[ 1 ]; + style.overflowY = opts.overflow[ 2 ]; + } ); + } + + // Implement show/hide animations + propTween = false; + for ( prop in orig ) { + + // General show/hide setup for this element animation + if ( !propTween ) { + if ( dataShow ) { + if ( "hidden" in dataShow ) { + hidden = dataShow.hidden; + } + } else { + dataShow = dataPriv.access( elem, "fxshow", { display: restoreDisplay } ); + } + + // Store hidden/visible for toggle so `.stop().toggle()` "reverses" + if ( toggle ) { + dataShow.hidden = !hidden; + } + + // Show elements before animating them + if ( hidden ) { + showHide( [ elem ], true ); + } + + /* eslint-disable no-loop-func */ + + anim.done( function() { + + /* eslint-enable no-loop-func */ + + // The final step of a "hide" animation is actually hiding the element + if ( !hidden ) { + showHide( [ elem ] ); + } + dataPriv.remove( elem, "fxshow" ); + for ( prop in orig ) { + jQuery.style( elem, prop, orig[ prop ] ); + } + } ); + } + + // Per-property setup + propTween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim ); + if ( !( prop in dataShow ) ) { + dataShow[ prop ] = propTween.start; + if ( hidden ) { + propTween.end = propTween.start; + propTween.start = 0; + } + } + } +} + +function propFilter( props, specialEasing ) { + var index, name, easing, value, hooks; + + // camelCase, specialEasing and expand cssHook pass + for ( index in props ) { + name = camelCase( index ); + easing = specialEasing[ name ]; + value = props[ index ]; + if ( Array.isArray( value ) ) { + easing = value[ 1 ]; + value = props[ index ] = value[ 0 ]; + } + + if ( index !== name ) { + props[ name ] = value; + delete props[ index ]; + } + + hooks = jQuery.cssHooks[ name ]; + if ( hooks && "expand" in hooks ) { + value = hooks.expand( value ); + delete props[ name ]; + + // Not quite $.extend, this won't overwrite existing keys. + // Reusing 'index' because we have the correct "name" + for ( index in value ) { + if ( !( index in props ) ) { + props[ index ] = value[ index ]; + specialEasing[ index ] = easing; + } + } + } else { + specialEasing[ name ] = easing; + } + } +} + +function Animation( elem, properties, options ) { + var result, + stopped, + index = 0, + length = Animation.prefilters.length, + deferred = jQuery.Deferred().always( function() { + + // Don't match elem in the :animated selector + delete tick.elem; + } ), + tick = function() { + if ( stopped ) { + return false; + } + var currentTime = fxNow || createFxNow(), + remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ), + + // Support: Android 2.3 only + // Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (#12497) + temp = remaining / animation.duration || 0, + percent = 1 - temp, + index = 0, + length = animation.tweens.length; + + for ( ; index < length; index++ ) { + animation.tweens[ index ].run( percent ); + } + + deferred.notifyWith( elem, [ animation, percent, remaining ] ); + + // If there's more to do, yield + if ( percent < 1 && length ) { + return remaining; + } + + // If this was an empty animation, synthesize a final progress notification + if ( !length ) { + deferred.notifyWith( elem, [ animation, 1, 0 ] ); + } + + // Resolve the animation and report its conclusion + deferred.resolveWith( elem, [ animation ] ); + return false; + }, + animation = deferred.promise( { + elem: elem, + props: jQuery.extend( {}, properties ), + opts: jQuery.extend( true, { + specialEasing: {}, + easing: jQuery.easing._default + }, options ), + originalProperties: properties, + originalOptions: options, + startTime: fxNow || createFxNow(), + duration: options.duration, + tweens: [], + createTween: function( prop, end ) { + var tween = jQuery.Tween( elem, animation.opts, prop, end, + animation.opts.specialEasing[ prop ] || animation.opts.easing ); + animation.tweens.push( tween ); + return tween; + }, + stop: function( gotoEnd ) { + var index = 0, + + // If we are going to the end, we want to run all the tweens + // otherwise we skip this part + length = gotoEnd ? animation.tweens.length : 0; + if ( stopped ) { + return this; + } + stopped = true; + for ( ; index < length; index++ ) { + animation.tweens[ index ].run( 1 ); + } + + // Resolve when we played the last frame; otherwise, reject + if ( gotoEnd ) { + deferred.notifyWith( elem, [ animation, 1, 0 ] ); + deferred.resolveWith( elem, [ animation, gotoEnd ] ); + } else { + deferred.rejectWith( elem, [ animation, gotoEnd ] ); + } + return this; + } + } ), + props = animation.props; + + propFilter( props, animation.opts.specialEasing ); + + for ( ; index < length; index++ ) { + result = Animation.prefilters[ index ].call( animation, elem, props, animation.opts ); + if ( result ) { + if ( isFunction( result.stop ) ) { + jQuery._queueHooks( animation.elem, animation.opts.queue ).stop = + result.stop.bind( result ); + } + return result; + } + } + + jQuery.map( props, createTween, animation ); + + if ( isFunction( animation.opts.start ) ) { + animation.opts.start.call( elem, animation ); + } + + // Attach callbacks from options + animation + .progress( animation.opts.progress ) + .done( animation.opts.done, animation.opts.complete ) + .fail( animation.opts.fail ) + .always( animation.opts.always ); + + jQuery.fx.timer( + jQuery.extend( tick, { + elem: elem, + anim: animation, + queue: animation.opts.queue + } ) + ); + + return animation; +} + +jQuery.Animation = jQuery.extend( Animation, { + + tweeners: { + "*": [ function( prop, value ) { + var tween = this.createTween( prop, value ); + adjustCSS( tween.elem, prop, rcssNum.exec( value ), tween ); + return tween; + } ] + }, + + tweener: function( props, callback ) { + if ( isFunction( props ) ) { + callback = props; + props = [ "*" ]; + } else { + props = props.match( rnothtmlwhite ); + } + + var prop, + index = 0, + length = props.length; + + for ( ; index < length; index++ ) { + prop = props[ index ]; + Animation.tweeners[ prop ] = Animation.tweeners[ prop ] || []; + Animation.tweeners[ prop ].unshift( callback ); + } + }, + + prefilters: [ defaultPrefilter ], + + prefilter: function( callback, prepend ) { + if ( prepend ) { + Animation.prefilters.unshift( callback ); + } else { + Animation.prefilters.push( callback ); + } + } +} ); + +jQuery.speed = function( speed, easing, fn ) { + var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : { + complete: fn || !fn && easing || + isFunction( speed ) && speed, + duration: speed, + easing: fn && easing || easing && !isFunction( easing ) && easing + }; + + // Go to the end state if fx are off + if ( jQuery.fx.off ) { + opt.duration = 0; + + } else { + if ( typeof opt.duration !== "number" ) { + if ( opt.duration in jQuery.fx.speeds ) { + opt.duration = jQuery.fx.speeds[ opt.duration ]; + + } else { + opt.duration = jQuery.fx.speeds._default; + } + } + } + + // Normalize opt.queue - true/undefined/null -> "fx" + if ( opt.queue == null || opt.queue === true ) { + opt.queue = "fx"; + } + + // Queueing + opt.old = opt.complete; + + opt.complete = function() { + if ( isFunction( opt.old ) ) { + opt.old.call( this ); + } + + if ( opt.queue ) { + jQuery.dequeue( this, opt.queue ); + } + }; + + return opt; +}; + +jQuery.fn.extend( { + fadeTo: function( speed, to, easing, callback ) { + + // Show any hidden elements after setting opacity to 0 + return this.filter( isHiddenWithinTree ).css( "opacity", 0 ).show() + + // Animate to the value specified + .end().animate( { opacity: to }, speed, easing, callback ); + }, + animate: function( prop, speed, easing, callback ) { + var empty = jQuery.isEmptyObject( prop ), + optall = jQuery.speed( speed, easing, callback ), + doAnimation = function() { + + // Operate on a copy of prop so per-property easing won't be lost + var anim = Animation( this, jQuery.extend( {}, prop ), optall ); + + // Empty animations, or finishing resolves immediately + if ( empty || dataPriv.get( this, "finish" ) ) { + anim.stop( true ); + } + }; + + doAnimation.finish = doAnimation; + + return empty || optall.queue === false ? + this.each( doAnimation ) : + this.queue( optall.queue, doAnimation ); + }, + stop: function( type, clearQueue, gotoEnd ) { + var stopQueue = function( hooks ) { + var stop = hooks.stop; + delete hooks.stop; + stop( gotoEnd ); + }; + + if ( typeof type !== "string" ) { + gotoEnd = clearQueue; + clearQueue = type; + type = undefined; + } + if ( clearQueue ) { + this.queue( type || "fx", [] ); + } + + return this.each( function() { + var dequeue = true, + index = type != null && type + "queueHooks", + timers = jQuery.timers, + data = dataPriv.get( this ); + + if ( index ) { + if ( data[ index ] && data[ index ].stop ) { + stopQueue( data[ index ] ); + } + } else { + for ( index in data ) { + if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) { + stopQueue( data[ index ] ); + } + } + } + + for ( index = timers.length; index--; ) { + if ( timers[ index ].elem === this && + ( type == null || timers[ index ].queue === type ) ) { + + timers[ index ].anim.stop( gotoEnd ); + dequeue = false; + timers.splice( index, 1 ); + } + } + + // Start the next in the queue if the last step wasn't forced. + // Timers currently will call their complete callbacks, which + // will dequeue but only if they were gotoEnd. + if ( dequeue || !gotoEnd ) { + jQuery.dequeue( this, type ); + } + } ); + }, + finish: function( type ) { + if ( type !== false ) { + type = type || "fx"; + } + return this.each( function() { + var index, + data = dataPriv.get( this ), + queue = data[ type + "queue" ], + hooks = data[ type + "queueHooks" ], + timers = jQuery.timers, + length = queue ? queue.length : 0; + + // Enable finishing flag on private data + data.finish = true; + + // Empty the queue first + jQuery.queue( this, type, [] ); + + if ( hooks && hooks.stop ) { + hooks.stop.call( this, true ); + } + + // Look for any active animations, and finish them + for ( index = timers.length; index--; ) { + if ( timers[ index ].elem === this && timers[ index ].queue === type ) { + timers[ index ].anim.stop( true ); + timers.splice( index, 1 ); + } + } + + // Look for any animations in the old queue and finish them + for ( index = 0; index < length; index++ ) { + if ( queue[ index ] && queue[ index ].finish ) { + queue[ index ].finish.call( this ); + } + } + + // Turn off finishing flag + delete data.finish; + } ); + } +} ); + +jQuery.each( [ "toggle", "show", "hide" ], function( _i, name ) { + var cssFn = jQuery.fn[ name ]; + jQuery.fn[ name ] = function( speed, easing, callback ) { + return speed == null || typeof speed === "boolean" ? + cssFn.apply( this, arguments ) : + this.animate( genFx( name, true ), speed, easing, callback ); + }; +} ); + +// Generate shortcuts for custom animations +jQuery.each( { + slideDown: genFx( "show" ), + slideUp: genFx( "hide" ), + slideToggle: genFx( "toggle" ), + fadeIn: { opacity: "show" }, + fadeOut: { opacity: "hide" }, + fadeToggle: { opacity: "toggle" } +}, function( name, props ) { + jQuery.fn[ name ] = function( speed, easing, callback ) { + return this.animate( props, speed, easing, callback ); + }; +} ); + +jQuery.timers = []; +jQuery.fx.tick = function() { + var timer, + i = 0, + timers = jQuery.timers; + + fxNow = Date.now(); + + for ( ; i < timers.length; i++ ) { + timer = timers[ i ]; + + // Run the timer and safely remove it when done (allowing for external removal) + if ( !timer() && timers[ i ] === timer ) { + timers.splice( i--, 1 ); + } + } + + if ( !timers.length ) { + jQuery.fx.stop(); + } + fxNow = undefined; +}; + +jQuery.fx.timer = function( timer ) { + jQuery.timers.push( timer ); + jQuery.fx.start(); +}; + +jQuery.fx.interval = 13; +jQuery.fx.start = function() { + if ( inProgress ) { + return; + } + + inProgress = true; + schedule(); +}; + +jQuery.fx.stop = function() { + inProgress = null; +}; + +jQuery.fx.speeds = { + slow: 600, + fast: 200, + + // Default speed + _default: 400 +}; + + +// Based off of the plugin by Clint Helfers, with permission. +// https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/ +jQuery.fn.delay = function( time, type ) { + time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time; + type = type || "fx"; + + return this.queue( type, function( next, hooks ) { + var timeout = window.setTimeout( next, time ); + hooks.stop = function() { + window.clearTimeout( timeout ); + }; + } ); +}; + + +( function() { + var input = document.createElement( "input" ), + select = document.createElement( "select" ), + opt = select.appendChild( document.createElement( "option" ) ); + + input.type = "checkbox"; + + // Support: Android <=4.3 only + // Default value for a checkbox should be "on" + support.checkOn = input.value !== ""; + + // Support: IE <=11 only + // Must access selectedIndex to make default options select + support.optSelected = opt.selected; + + // Support: IE <=11 only + // An input loses its value after becoming a radio + input = document.createElement( "input" ); + input.value = "t"; + input.type = "radio"; + support.radioValue = input.value === "t"; +} )(); + + +var boolHook, + attrHandle = jQuery.expr.attrHandle; + +jQuery.fn.extend( { + attr: function( name, value ) { + return access( this, jQuery.attr, name, value, arguments.length > 1 ); + }, + + removeAttr: function( name ) { + return this.each( function() { + jQuery.removeAttr( this, name ); + } ); + } +} ); + +jQuery.extend( { + attr: function( elem, name, value ) { + var ret, hooks, + nType = elem.nodeType; + + // Don't get/set attributes on text, comment and attribute nodes + if ( nType === 3 || nType === 8 || nType === 2 ) { + return; + } + + // Fallback to prop when attributes are not supported + if ( typeof elem.getAttribute === "undefined" ) { + return jQuery.prop( elem, name, value ); + } + + // Attribute hooks are determined by the lowercase version + // Grab necessary hook if one is defined + if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) { + hooks = jQuery.attrHooks[ name.toLowerCase() ] || + ( jQuery.expr.match.bool.test( name ) ? boolHook : undefined ); + } + + if ( value !== undefined ) { + if ( value === null ) { + jQuery.removeAttr( elem, name ); + return; + } + + if ( hooks && "set" in hooks && + ( ret = hooks.set( elem, value, name ) ) !== undefined ) { + return ret; + } + + elem.setAttribute( name, value + "" ); + return value; + } + + if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) { + return ret; + } + + ret = jQuery.find.attr( elem, name ); + + // Non-existent attributes return null, we normalize to undefined + return ret == null ? undefined : ret; + }, + + attrHooks: { + type: { + set: function( elem, value ) { + if ( !support.radioValue && value === "radio" && + nodeName( elem, "input" ) ) { + var val = elem.value; + elem.setAttribute( "type", value ); + if ( val ) { + elem.value = val; + } + return value; + } + } + } + }, + + removeAttr: function( elem, value ) { + var name, + i = 0, + + // Attribute names can contain non-HTML whitespace characters + // https://html.spec.whatwg.org/multipage/syntax.html#attributes-2 + attrNames = value && value.match( rnothtmlwhite ); + + if ( attrNames && elem.nodeType === 1 ) { + while ( ( name = attrNames[ i++ ] ) ) { + elem.removeAttribute( name ); + } + } + } +} ); + +// Hooks for boolean attributes +boolHook = { + set: function( elem, value, name ) { + if ( value === false ) { + + // Remove boolean attributes when set to false + jQuery.removeAttr( elem, name ); + } else { + elem.setAttribute( name, name ); + } + return name; + } +}; + +jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( _i, name ) { + var getter = attrHandle[ name ] || jQuery.find.attr; + + attrHandle[ name ] = function( elem, name, isXML ) { + var ret, handle, + lowercaseName = name.toLowerCase(); + + if ( !isXML ) { + + // Avoid an infinite loop by temporarily removing this function from the getter + handle = attrHandle[ lowercaseName ]; + attrHandle[ lowercaseName ] = ret; + ret = getter( elem, name, isXML ) != null ? + lowercaseName : + null; + attrHandle[ lowercaseName ] = handle; + } + return ret; + }; +} ); + + + + +var rfocusable = /^(?:input|select|textarea|button)$/i, + rclickable = /^(?:a|area)$/i; + +jQuery.fn.extend( { + prop: function( name, value ) { + return access( this, jQuery.prop, name, value, arguments.length > 1 ); + }, + + removeProp: function( name ) { + return this.each( function() { + delete this[ jQuery.propFix[ name ] || name ]; + } ); + } +} ); + +jQuery.extend( { + prop: function( elem, name, value ) { + var ret, hooks, + nType = elem.nodeType; + + // Don't get/set properties on text, comment and attribute nodes + if ( nType === 3 || nType === 8 || nType === 2 ) { + return; + } + + if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) { + + // Fix name and attach hooks + name = jQuery.propFix[ name ] || name; + hooks = jQuery.propHooks[ name ]; + } + + if ( value !== undefined ) { + if ( hooks && "set" in hooks && + ( ret = hooks.set( elem, value, name ) ) !== undefined ) { + return ret; + } + + return ( elem[ name ] = value ); + } + + if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) { + return ret; + } + + return elem[ name ]; + }, + + propHooks: { + tabIndex: { + get: function( elem ) { + + // Support: IE <=9 - 11 only + // elem.tabIndex doesn't always return the + // correct value when it hasn't been explicitly set + // https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/ + // Use proper attribute retrieval(#12072) + var tabindex = jQuery.find.attr( elem, "tabindex" ); + + if ( tabindex ) { + return parseInt( tabindex, 10 ); + } + + if ( + rfocusable.test( elem.nodeName ) || + rclickable.test( elem.nodeName ) && + elem.href + ) { + return 0; + } + + return -1; + } + } + }, + + propFix: { + "for": "htmlFor", + "class": "className" + } +} ); + +// Support: IE <=11 only +// Accessing the selectedIndex property +// forces the browser to respect setting selected +// on the option +// The getter ensures a default option is selected +// when in an optgroup +// eslint rule "no-unused-expressions" is disabled for this code +// since it considers such accessions noop +if ( !support.optSelected ) { + jQuery.propHooks.selected = { + get: function( elem ) { + + /* eslint no-unused-expressions: "off" */ + + var parent = elem.parentNode; + if ( parent && parent.parentNode ) { + parent.parentNode.selectedIndex; + } + return null; + }, + set: function( elem ) { + + /* eslint no-unused-expressions: "off" */ + + var parent = elem.parentNode; + if ( parent ) { + parent.selectedIndex; + + if ( parent.parentNode ) { + parent.parentNode.selectedIndex; + } + } + } + }; +} + +jQuery.each( [ + "tabIndex", + "readOnly", + "maxLength", + "cellSpacing", + "cellPadding", + "rowSpan", + "colSpan", + "useMap", + "frameBorder", + "contentEditable" +], function() { + jQuery.propFix[ this.toLowerCase() ] = this; +} ); + + + + + // Strip and collapse whitespace according to HTML spec + // https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace + function stripAndCollapse( value ) { + var tokens = value.match( rnothtmlwhite ) || []; + return tokens.join( " " ); + } + + +function getClass( elem ) { + return elem.getAttribute && elem.getAttribute( "class" ) || ""; +} + +function classesToArray( value ) { + if ( Array.isArray( value ) ) { + return value; + } + if ( typeof value === "string" ) { + return value.match( rnothtmlwhite ) || []; + } + return []; +} + +jQuery.fn.extend( { + addClass: function( value ) { + var classes, elem, cur, curValue, clazz, j, finalValue, + i = 0; + + if ( isFunction( value ) ) { + return this.each( function( j ) { + jQuery( this ).addClass( value.call( this, j, getClass( this ) ) ); + } ); + } + + classes = classesToArray( value ); + + if ( classes.length ) { + while ( ( elem = this[ i++ ] ) ) { + curValue = getClass( elem ); + cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " ); + + if ( cur ) { + j = 0; + while ( ( clazz = classes[ j++ ] ) ) { + if ( cur.indexOf( " " + clazz + " " ) < 0 ) { + cur += clazz + " "; + } + } + + // Only assign if different to avoid unneeded rendering. + finalValue = stripAndCollapse( cur ); + if ( curValue !== finalValue ) { + elem.setAttribute( "class", finalValue ); + } + } + } + } + + return this; + }, + + removeClass: function( value ) { + var classes, elem, cur, curValue, clazz, j, finalValue, + i = 0; + + if ( isFunction( value ) ) { + return this.each( function( j ) { + jQuery( this ).removeClass( value.call( this, j, getClass( this ) ) ); + } ); + } + + if ( !arguments.length ) { + return this.attr( "class", "" ); + } + + classes = classesToArray( value ); + + if ( classes.length ) { + while ( ( elem = this[ i++ ] ) ) { + curValue = getClass( elem ); + + // This expression is here for better compressibility (see addClass) + cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " ); + + if ( cur ) { + j = 0; + while ( ( clazz = classes[ j++ ] ) ) { + + // Remove *all* instances + while ( cur.indexOf( " " + clazz + " " ) > -1 ) { + cur = cur.replace( " " + clazz + " ", " " ); + } + } + + // Only assign if different to avoid unneeded rendering. + finalValue = stripAndCollapse( cur ); + if ( curValue !== finalValue ) { + elem.setAttribute( "class", finalValue ); + } + } + } + } + + return this; + }, + + toggleClass: function( value, stateVal ) { + var type = typeof value, + isValidValue = type === "string" || Array.isArray( value ); + + if ( typeof stateVal === "boolean" && isValidValue ) { + return stateVal ? this.addClass( value ) : this.removeClass( value ); + } + + if ( isFunction( value ) ) { + return this.each( function( i ) { + jQuery( this ).toggleClass( + value.call( this, i, getClass( this ), stateVal ), + stateVal + ); + } ); + } + + return this.each( function() { + var className, i, self, classNames; + + if ( isValidValue ) { + + // Toggle individual class names + i = 0; + self = jQuery( this ); + classNames = classesToArray( value ); + + while ( ( className = classNames[ i++ ] ) ) { + + // Check each className given, space separated list + if ( self.hasClass( className ) ) { + self.removeClass( className ); + } else { + self.addClass( className ); + } + } + + // Toggle whole class name + } else if ( value === undefined || type === "boolean" ) { + className = getClass( this ); + if ( className ) { + + // Store className if set + dataPriv.set( this, "__className__", className ); + } + + // If the element has a class name or if we're passed `false`, + // then remove the whole classname (if there was one, the above saved it). + // Otherwise bring back whatever was previously saved (if anything), + // falling back to the empty string if nothing was stored. + if ( this.setAttribute ) { + this.setAttribute( "class", + className || value === false ? + "" : + dataPriv.get( this, "__className__" ) || "" + ); + } + } + } ); + }, + + hasClass: function( selector ) { + var className, elem, + i = 0; + + className = " " + selector + " "; + while ( ( elem = this[ i++ ] ) ) { + if ( elem.nodeType === 1 && + ( " " + stripAndCollapse( getClass( elem ) ) + " " ).indexOf( className ) > -1 ) { + return true; + } + } + + return false; + } +} ); + + + + +var rreturn = /\r/g; + +jQuery.fn.extend( { + val: function( value ) { + var hooks, ret, valueIsFunction, + elem = this[ 0 ]; + + if ( !arguments.length ) { + if ( elem ) { + hooks = jQuery.valHooks[ elem.type ] || + jQuery.valHooks[ elem.nodeName.toLowerCase() ]; + + if ( hooks && + "get" in hooks && + ( ret = hooks.get( elem, "value" ) ) !== undefined + ) { + return ret; + } + + ret = elem.value; + + // Handle most common string cases + if ( typeof ret === "string" ) { + return ret.replace( rreturn, "" ); + } + + // Handle cases where value is null/undef or number + return ret == null ? "" : ret; + } + + return; + } + + valueIsFunction = isFunction( value ); + + return this.each( function( i ) { + var val; + + if ( this.nodeType !== 1 ) { + return; + } + + if ( valueIsFunction ) { + val = value.call( this, i, jQuery( this ).val() ); + } else { + val = value; + } + + // Treat null/undefined as ""; convert numbers to string + if ( val == null ) { + val = ""; + + } else if ( typeof val === "number" ) { + val += ""; + + } else if ( Array.isArray( val ) ) { + val = jQuery.map( val, function( value ) { + return value == null ? "" : value + ""; + } ); + } + + hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ]; + + // If set returns undefined, fall back to normal setting + if ( !hooks || !( "set" in hooks ) || hooks.set( this, val, "value" ) === undefined ) { + this.value = val; + } + } ); + } +} ); + +jQuery.extend( { + valHooks: { + option: { + get: function( elem ) { + + var val = jQuery.find.attr( elem, "value" ); + return val != null ? + val : + + // Support: IE <=10 - 11 only + // option.text throws exceptions (#14686, #14858) + // Strip and collapse whitespace + // https://html.spec.whatwg.org/#strip-and-collapse-whitespace + stripAndCollapse( jQuery.text( elem ) ); + } + }, + select: { + get: function( elem ) { + var value, option, i, + options = elem.options, + index = elem.selectedIndex, + one = elem.type === "select-one", + values = one ? null : [], + max = one ? index + 1 : options.length; + + if ( index < 0 ) { + i = max; + + } else { + i = one ? index : 0; + } + + // Loop through all the selected options + for ( ; i < max; i++ ) { + option = options[ i ]; + + // Support: IE <=9 only + // IE8-9 doesn't update selected after form reset (#2551) + if ( ( option.selected || i === index ) && + + // Don't return options that are disabled or in a disabled optgroup + !option.disabled && + ( !option.parentNode.disabled || + !nodeName( option.parentNode, "optgroup" ) ) ) { + + // Get the specific value for the option + value = jQuery( option ).val(); + + // We don't need an array for one selects + if ( one ) { + return value; + } + + // Multi-Selects return an array + values.push( value ); + } + } + + return values; + }, + + set: function( elem, value ) { + var optionSet, option, + options = elem.options, + values = jQuery.makeArray( value ), + i = options.length; + + while ( i-- ) { + option = options[ i ]; + + /* eslint-disable no-cond-assign */ + + if ( option.selected = + jQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1 + ) { + optionSet = true; + } + + /* eslint-enable no-cond-assign */ + } + + // Force browsers to behave consistently when non-matching value is set + if ( !optionSet ) { + elem.selectedIndex = -1; + } + return values; + } + } + } +} ); + +// Radios and checkboxes getter/setter +jQuery.each( [ "radio", "checkbox" ], function() { + jQuery.valHooks[ this ] = { + set: function( elem, value ) { + if ( Array.isArray( value ) ) { + return ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 ); + } + } + }; + if ( !support.checkOn ) { + jQuery.valHooks[ this ].get = function( elem ) { + return elem.getAttribute( "value" ) === null ? "on" : elem.value; + }; + } +} ); + + + + +// Return jQuery for attributes-only inclusion + + +support.focusin = "onfocusin" in window; + + +var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/, + stopPropagationCallback = function( e ) { + e.stopPropagation(); + }; + +jQuery.extend( jQuery.event, { + + trigger: function( event, data, elem, onlyHandlers ) { + + var i, cur, tmp, bubbleType, ontype, handle, special, lastElement, + eventPath = [ elem || document ], + type = hasOwn.call( event, "type" ) ? event.type : event, + namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split( "." ) : []; + + cur = lastElement = tmp = elem = elem || document; + + // Don't do events on text and comment nodes + if ( elem.nodeType === 3 || elem.nodeType === 8 ) { + return; + } + + // focus/blur morphs to focusin/out; ensure we're not firing them right now + if ( rfocusMorph.test( type + jQuery.event.triggered ) ) { + return; + } + + if ( type.indexOf( "." ) > -1 ) { + + // Namespaced trigger; create a regexp to match event type in handle() + namespaces = type.split( "." ); + type = namespaces.shift(); + namespaces.sort(); + } + ontype = type.indexOf( ":" ) < 0 && "on" + type; + + // Caller can pass in a jQuery.Event object, Object, or just an event type string + event = event[ jQuery.expando ] ? + event : + new jQuery.Event( type, typeof event === "object" && event ); + + // Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true) + event.isTrigger = onlyHandlers ? 2 : 3; + event.namespace = namespaces.join( "." ); + event.rnamespace = event.namespace ? + new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ) : + null; + + // Clean up the event in case it is being reused + event.result = undefined; + if ( !event.target ) { + event.target = elem; + } + + // Clone any incoming data and prepend the event, creating the handler arg list + data = data == null ? + [ event ] : + jQuery.makeArray( data, [ event ] ); + + // Allow special events to draw outside the lines + special = jQuery.event.special[ type ] || {}; + if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) { + return; + } + + // Determine event propagation path in advance, per W3C events spec (#9951) + // Bubble up to document, then to window; watch for a global ownerDocument var (#9724) + if ( !onlyHandlers && !special.noBubble && !isWindow( elem ) ) { + + bubbleType = special.delegateType || type; + if ( !rfocusMorph.test( bubbleType + type ) ) { + cur = cur.parentNode; + } + for ( ; cur; cur = cur.parentNode ) { + eventPath.push( cur ); + tmp = cur; + } + + // Only add window if we got to document (e.g., not plain obj or detached DOM) + if ( tmp === ( elem.ownerDocument || document ) ) { + eventPath.push( tmp.defaultView || tmp.parentWindow || window ); + } + } + + // Fire handlers on the event path + i = 0; + while ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) { + lastElement = cur; + event.type = i > 1 ? + bubbleType : + special.bindType || type; + + // jQuery handler + handle = ( dataPriv.get( cur, "events" ) || Object.create( null ) )[ event.type ] && + dataPriv.get( cur, "handle" ); + if ( handle ) { + handle.apply( cur, data ); + } + + // Native handler + handle = ontype && cur[ ontype ]; + if ( handle && handle.apply && acceptData( cur ) ) { + event.result = handle.apply( cur, data ); + if ( event.result === false ) { + event.preventDefault(); + } + } + } + event.type = type; + + // If nobody prevented the default action, do it now + if ( !onlyHandlers && !event.isDefaultPrevented() ) { + + if ( ( !special._default || + special._default.apply( eventPath.pop(), data ) === false ) && + acceptData( elem ) ) { + + // Call a native DOM method on the target with the same name as the event. + // Don't do default actions on window, that's where global variables be (#6170) + if ( ontype && isFunction( elem[ type ] ) && !isWindow( elem ) ) { + + // Don't re-trigger an onFOO event when we call its FOO() method + tmp = elem[ ontype ]; + + if ( tmp ) { + elem[ ontype ] = null; + } + + // Prevent re-triggering of the same event, since we already bubbled it above + jQuery.event.triggered = type; + + if ( event.isPropagationStopped() ) { + lastElement.addEventListener( type, stopPropagationCallback ); + } + + elem[ type ](); + + if ( event.isPropagationStopped() ) { + lastElement.removeEventListener( type, stopPropagationCallback ); + } + + jQuery.event.triggered = undefined; + + if ( tmp ) { + elem[ ontype ] = tmp; + } + } + } + } + + return event.result; + }, + + // Piggyback on a donor event to simulate a different one + // Used only for `focus(in | out)` events + simulate: function( type, elem, event ) { + var e = jQuery.extend( + new jQuery.Event(), + event, + { + type: type, + isSimulated: true + } + ); + + jQuery.event.trigger( e, null, elem ); + } + +} ); + +jQuery.fn.extend( { + + trigger: function( type, data ) { + return this.each( function() { + jQuery.event.trigger( type, data, this ); + } ); + }, + triggerHandler: function( type, data ) { + var elem = this[ 0 ]; + if ( elem ) { + return jQuery.event.trigger( type, data, elem, true ); + } + } +} ); + + +// Support: Firefox <=44 +// Firefox doesn't have focus(in | out) events +// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787 +// +// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1 +// focus(in | out) events fire after focus & blur events, +// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order +// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857 +if ( !support.focusin ) { + jQuery.each( { focus: "focusin", blur: "focusout" }, function( orig, fix ) { + + // Attach a single capturing handler on the document while someone wants focusin/focusout + var handler = function( event ) { + jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ) ); + }; + + jQuery.event.special[ fix ] = { + setup: function() { + + // Handle: regular nodes (via `this.ownerDocument`), window + // (via `this.document`) & document (via `this`). + var doc = this.ownerDocument || this.document || this, + attaches = dataPriv.access( doc, fix ); + + if ( !attaches ) { + doc.addEventListener( orig, handler, true ); + } + dataPriv.access( doc, fix, ( attaches || 0 ) + 1 ); + }, + teardown: function() { + var doc = this.ownerDocument || this.document || this, + attaches = dataPriv.access( doc, fix ) - 1; + + if ( !attaches ) { + doc.removeEventListener( orig, handler, true ); + dataPriv.remove( doc, fix ); + + } else { + dataPriv.access( doc, fix, attaches ); + } + } + }; + } ); +} +var location = window.location; + +var nonce = { guid: Date.now() }; + +var rquery = ( /\?/ ); + + + +// Cross-browser xml parsing +jQuery.parseXML = function( data ) { + var xml, parserErrorElem; + if ( !data || typeof data !== "string" ) { + return null; + } + + // Support: IE 9 - 11 only + // IE throws on parseFromString with invalid input. + try { + xml = ( new window.DOMParser() ).parseFromString( data, "text/xml" ); + } catch ( e ) {} + + parserErrorElem = xml && xml.getElementsByTagName( "parsererror" )[ 0 ]; + if ( !xml || parserErrorElem ) { + jQuery.error( "Invalid XML: " + ( + parserErrorElem ? + jQuery.map( parserErrorElem.childNodes, function( el ) { + return el.textContent; + } ).join( "\n" ) : + data + ) ); + } + return xml; +}; + + +var + rbracket = /\[\]$/, + rCRLF = /\r?\n/g, + rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i, + rsubmittable = /^(?:input|select|textarea|keygen)/i; + +function buildParams( prefix, obj, traditional, add ) { + var name; + + if ( Array.isArray( obj ) ) { + + // Serialize array item. + jQuery.each( obj, function( i, v ) { + if ( traditional || rbracket.test( prefix ) ) { + + // Treat each array item as a scalar. + add( prefix, v ); + + } else { + + // Item is non-scalar (array or object), encode its numeric index. + buildParams( + prefix + "[" + ( typeof v === "object" && v != null ? i : "" ) + "]", + v, + traditional, + add + ); + } + } ); + + } else if ( !traditional && toType( obj ) === "object" ) { + + // Serialize object item. + for ( name in obj ) { + buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add ); + } + + } else { + + // Serialize scalar item. + add( prefix, obj ); + } +} + +// Serialize an array of form elements or a set of +// key/values into a query string +jQuery.param = function( a, traditional ) { + var prefix, + s = [], + add = function( key, valueOrFunction ) { + + // If value is a function, invoke it and use its return value + var value = isFunction( valueOrFunction ) ? + valueOrFunction() : + valueOrFunction; + + s[ s.length ] = encodeURIComponent( key ) + "=" + + encodeURIComponent( value == null ? "" : value ); + }; + + if ( a == null ) { + return ""; + } + + // If an array was passed in, assume that it is an array of form elements. + if ( Array.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) { + + // Serialize the form elements + jQuery.each( a, function() { + add( this.name, this.value ); + } ); + + } else { + + // If traditional, encode the "old" way (the way 1.3.2 or older + // did it), otherwise encode params recursively. + for ( prefix in a ) { + buildParams( prefix, a[ prefix ], traditional, add ); + } + } + + // Return the resulting serialization + return s.join( "&" ); +}; + +jQuery.fn.extend( { + serialize: function() { + return jQuery.param( this.serializeArray() ); + }, + serializeArray: function() { + return this.map( function() { + + // Can add propHook for "elements" to filter or add form elements + var elements = jQuery.prop( this, "elements" ); + return elements ? jQuery.makeArray( elements ) : this; + } ).filter( function() { + var type = this.type; + + // Use .is( ":disabled" ) so that fieldset[disabled] works + return this.name && !jQuery( this ).is( ":disabled" ) && + rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) && + ( this.checked || !rcheckableType.test( type ) ); + } ).map( function( _i, elem ) { + var val = jQuery( this ).val(); + + if ( val == null ) { + return null; + } + + if ( Array.isArray( val ) ) { + return jQuery.map( val, function( val ) { + return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; + } ); + } + + return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; + } ).get(); + } +} ); + + +var + r20 = /%20/g, + rhash = /#.*$/, + rantiCache = /([?&])_=[^&]*/, + rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg, + + // #7653, #8125, #8152: local protocol detection + rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/, + rnoContent = /^(?:GET|HEAD)$/, + rprotocol = /^\/\//, + + /* Prefilters + * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example) + * 2) These are called: + * - BEFORE asking for a transport + * - AFTER param serialization (s.data is a string if s.processData is true) + * 3) key is the dataType + * 4) the catchall symbol "*" can be used + * 5) execution will start with transport dataType and THEN continue down to "*" if needed + */ + prefilters = {}, + + /* Transports bindings + * 1) key is the dataType + * 2) the catchall symbol "*" can be used + * 3) selection will start with transport dataType and THEN go to "*" if needed + */ + transports = {}, + + // Avoid comment-prolog char sequence (#10098); must appease lint and evade compression + allTypes = "*/".concat( "*" ), + + // Anchor tag for parsing the document origin + originAnchor = document.createElement( "a" ); + +originAnchor.href = location.href; + +// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport +function addToPrefiltersOrTransports( structure ) { + + // dataTypeExpression is optional and defaults to "*" + return function( dataTypeExpression, func ) { + + if ( typeof dataTypeExpression !== "string" ) { + func = dataTypeExpression; + dataTypeExpression = "*"; + } + + var dataType, + i = 0, + dataTypes = dataTypeExpression.toLowerCase().match( rnothtmlwhite ) || []; + + if ( isFunction( func ) ) { + + // For each dataType in the dataTypeExpression + while ( ( dataType = dataTypes[ i++ ] ) ) { + + // Prepend if requested + if ( dataType[ 0 ] === "+" ) { + dataType = dataType.slice( 1 ) || "*"; + ( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func ); + + // Otherwise append + } else { + ( structure[ dataType ] = structure[ dataType ] || [] ).push( func ); + } + } + } + }; +} + +// Base inspection function for prefilters and transports +function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) { + + var inspected = {}, + seekingTransport = ( structure === transports ); + + function inspect( dataType ) { + var selected; + inspected[ dataType ] = true; + jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) { + var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR ); + if ( typeof dataTypeOrTransport === "string" && + !seekingTransport && !inspected[ dataTypeOrTransport ] ) { + + options.dataTypes.unshift( dataTypeOrTransport ); + inspect( dataTypeOrTransport ); + return false; + } else if ( seekingTransport ) { + return !( selected = dataTypeOrTransport ); + } + } ); + return selected; + } + + return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" ); +} + +// A special extend for ajax options +// that takes "flat" options (not to be deep extended) +// Fixes #9887 +function ajaxExtend( target, src ) { + var key, deep, + flatOptions = jQuery.ajaxSettings.flatOptions || {}; + + for ( key in src ) { + if ( src[ key ] !== undefined ) { + ( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ]; + } + } + if ( deep ) { + jQuery.extend( true, target, deep ); + } + + return target; +} + +/* Handles responses to an ajax request: + * - finds the right dataType (mediates between content-type and expected dataType) + * - returns the corresponding response + */ +function ajaxHandleResponses( s, jqXHR, responses ) { + + var ct, type, finalDataType, firstDataType, + contents = s.contents, + dataTypes = s.dataTypes; + + // Remove auto dataType and get content-type in the process + while ( dataTypes[ 0 ] === "*" ) { + dataTypes.shift(); + if ( ct === undefined ) { + ct = s.mimeType || jqXHR.getResponseHeader( "Content-Type" ); + } + } + + // Check if we're dealing with a known content-type + if ( ct ) { + for ( type in contents ) { + if ( contents[ type ] && contents[ type ].test( ct ) ) { + dataTypes.unshift( type ); + break; + } + } + } + + // Check to see if we have a response for the expected dataType + if ( dataTypes[ 0 ] in responses ) { + finalDataType = dataTypes[ 0 ]; + } else { + + // Try convertible dataTypes + for ( type in responses ) { + if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[ 0 ] ] ) { + finalDataType = type; + break; + } + if ( !firstDataType ) { + firstDataType = type; + } + } + + // Or just use first one + finalDataType = finalDataType || firstDataType; + } + + // If we found a dataType + // We add the dataType to the list if needed + // and return the corresponding response + if ( finalDataType ) { + if ( finalDataType !== dataTypes[ 0 ] ) { + dataTypes.unshift( finalDataType ); + } + return responses[ finalDataType ]; + } +} + +/* Chain conversions given the request and the original response + * Also sets the responseXXX fields on the jqXHR instance + */ +function ajaxConvert( s, response, jqXHR, isSuccess ) { + var conv2, current, conv, tmp, prev, + converters = {}, + + // Work with a copy of dataTypes in case we need to modify it for conversion + dataTypes = s.dataTypes.slice(); + + // Create converters map with lowercased keys + if ( dataTypes[ 1 ] ) { + for ( conv in s.converters ) { + converters[ conv.toLowerCase() ] = s.converters[ conv ]; + } + } + + current = dataTypes.shift(); + + // Convert to each sequential dataType + while ( current ) { + + if ( s.responseFields[ current ] ) { + jqXHR[ s.responseFields[ current ] ] = response; + } + + // Apply the dataFilter if provided + if ( !prev && isSuccess && s.dataFilter ) { + response = s.dataFilter( response, s.dataType ); + } + + prev = current; + current = dataTypes.shift(); + + if ( current ) { + + // There's only work to do if current dataType is non-auto + if ( current === "*" ) { + + current = prev; + + // Convert response if prev dataType is non-auto and differs from current + } else if ( prev !== "*" && prev !== current ) { + + // Seek a direct converter + conv = converters[ prev + " " + current ] || converters[ "* " + current ]; + + // If none found, seek a pair + if ( !conv ) { + for ( conv2 in converters ) { + + // If conv2 outputs current + tmp = conv2.split( " " ); + if ( tmp[ 1 ] === current ) { + + // If prev can be converted to accepted input + conv = converters[ prev + " " + tmp[ 0 ] ] || + converters[ "* " + tmp[ 0 ] ]; + if ( conv ) { + + // Condense equivalence converters + if ( conv === true ) { + conv = converters[ conv2 ]; + + // Otherwise, insert the intermediate dataType + } else if ( converters[ conv2 ] !== true ) { + current = tmp[ 0 ]; + dataTypes.unshift( tmp[ 1 ] ); + } + break; + } + } + } + } + + // Apply converter (if not an equivalence) + if ( conv !== true ) { + + // Unless errors are allowed to bubble, catch and return them + if ( conv && s.throws ) { + response = conv( response ); + } else { + try { + response = conv( response ); + } catch ( e ) { + return { + state: "parsererror", + error: conv ? e : "No conversion from " + prev + " to " + current + }; + } + } + } + } + } + } + + return { state: "success", data: response }; +} + +jQuery.extend( { + + // Counter for holding the number of active queries + active: 0, + + // Last-Modified header cache for next request + lastModified: {}, + etag: {}, + + ajaxSettings: { + url: location.href, + type: "GET", + isLocal: rlocalProtocol.test( location.protocol ), + global: true, + processData: true, + async: true, + contentType: "application/x-www-form-urlencoded; charset=UTF-8", + + /* + timeout: 0, + data: null, + dataType: null, + username: null, + password: null, + cache: null, + throws: false, + traditional: false, + headers: {}, + */ + + accepts: { + "*": allTypes, + text: "text/plain", + html: "text/html", + xml: "application/xml, text/xml", + json: "application/json, text/javascript" + }, + + contents: { + xml: /\bxml\b/, + html: /\bhtml/, + json: /\bjson\b/ + }, + + responseFields: { + xml: "responseXML", + text: "responseText", + json: "responseJSON" + }, + + // Data converters + // Keys separate source (or catchall "*") and destination types with a single space + converters: { + + // Convert anything to text + "* text": String, + + // Text to html (true = no transformation) + "text html": true, + + // Evaluate text as a json expression + "text json": JSON.parse, + + // Parse text as xml + "text xml": jQuery.parseXML + }, + + // For options that shouldn't be deep extended: + // you can add your own custom options here if + // and when you create one that shouldn't be + // deep extended (see ajaxExtend) + flatOptions: { + url: true, + context: true + } + }, + + // Creates a full fledged settings object into target + // with both ajaxSettings and settings fields. + // If target is omitted, writes into ajaxSettings. + ajaxSetup: function( target, settings ) { + return settings ? + + // Building a settings object + ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) : + + // Extending ajaxSettings + ajaxExtend( jQuery.ajaxSettings, target ); + }, + + ajaxPrefilter: addToPrefiltersOrTransports( prefilters ), + ajaxTransport: addToPrefiltersOrTransports( transports ), + + // Main method + ajax: function( url, options ) { + + // If url is an object, simulate pre-1.5 signature + if ( typeof url === "object" ) { + options = url; + url = undefined; + } + + // Force options to be an object + options = options || {}; + + var transport, + + // URL without anti-cache param + cacheURL, + + // Response headers + responseHeadersString, + responseHeaders, + + // timeout handle + timeoutTimer, + + // Url cleanup var + urlAnchor, + + // Request state (becomes false upon send and true upon completion) + completed, + + // To know if global events are to be dispatched + fireGlobals, + + // Loop variable + i, + + // uncached part of the url + uncached, + + // Create the final options object + s = jQuery.ajaxSetup( {}, options ), + + // Callbacks context + callbackContext = s.context || s, + + // Context for global events is callbackContext if it is a DOM node or jQuery collection + globalEventContext = s.context && + ( callbackContext.nodeType || callbackContext.jquery ) ? + jQuery( callbackContext ) : + jQuery.event, + + // Deferreds + deferred = jQuery.Deferred(), + completeDeferred = jQuery.Callbacks( "once memory" ), + + // Status-dependent callbacks + statusCode = s.statusCode || {}, + + // Headers (they are sent all at once) + requestHeaders = {}, + requestHeadersNames = {}, + + // Default abort message + strAbort = "canceled", + + // Fake xhr + jqXHR = { + readyState: 0, + + // Builds headers hashtable if needed + getResponseHeader: function( key ) { + var match; + if ( completed ) { + if ( !responseHeaders ) { + responseHeaders = {}; + while ( ( match = rheaders.exec( responseHeadersString ) ) ) { + responseHeaders[ match[ 1 ].toLowerCase() + " " ] = + ( responseHeaders[ match[ 1 ].toLowerCase() + " " ] || [] ) + .concat( match[ 2 ] ); + } + } + match = responseHeaders[ key.toLowerCase() + " " ]; + } + return match == null ? null : match.join( ", " ); + }, + + // Raw string + getAllResponseHeaders: function() { + return completed ? responseHeadersString : null; + }, + + // Caches the header + setRequestHeader: function( name, value ) { + if ( completed == null ) { + name = requestHeadersNames[ name.toLowerCase() ] = + requestHeadersNames[ name.toLowerCase() ] || name; + requestHeaders[ name ] = value; + } + return this; + }, + + // Overrides response content-type header + overrideMimeType: function( type ) { + if ( completed == null ) { + s.mimeType = type; + } + return this; + }, + + // Status-dependent callbacks + statusCode: function( map ) { + var code; + if ( map ) { + if ( completed ) { + + // Execute the appropriate callbacks + jqXHR.always( map[ jqXHR.status ] ); + } else { + + // Lazy-add the new callbacks in a way that preserves old ones + for ( code in map ) { + statusCode[ code ] = [ statusCode[ code ], map[ code ] ]; + } + } + } + return this; + }, + + // Cancel the request + abort: function( statusText ) { + var finalText = statusText || strAbort; + if ( transport ) { + transport.abort( finalText ); + } + done( 0, finalText ); + return this; + } + }; + + // Attach deferreds + deferred.promise( jqXHR ); + + // Add protocol if not provided (prefilters might expect it) + // Handle falsy url in the settings object (#10093: consistency with old signature) + // We also use the url parameter if available + s.url = ( ( url || s.url || location.href ) + "" ) + .replace( rprotocol, location.protocol + "//" ); + + // Alias method option to type as per ticket #12004 + s.type = options.method || options.type || s.method || s.type; + + // Extract dataTypes list + s.dataTypes = ( s.dataType || "*" ).toLowerCase().match( rnothtmlwhite ) || [ "" ]; + + // A cross-domain request is in order when the origin doesn't match the current origin. + if ( s.crossDomain == null ) { + urlAnchor = document.createElement( "a" ); + + // Support: IE <=8 - 11, Edge 12 - 15 + // IE throws exception on accessing the href property if url is malformed, + // e.g. http://example.com:80x/ + try { + urlAnchor.href = s.url; + + // Support: IE <=8 - 11 only + // Anchor's host property isn't correctly set when s.url is relative + urlAnchor.href = urlAnchor.href; + s.crossDomain = originAnchor.protocol + "//" + originAnchor.host !== + urlAnchor.protocol + "//" + urlAnchor.host; + } catch ( e ) { + + // If there is an error parsing the URL, assume it is crossDomain, + // it can be rejected by the transport if it is invalid + s.crossDomain = true; + } + } + + // Convert data if not already a string + if ( s.data && s.processData && typeof s.data !== "string" ) { + s.data = jQuery.param( s.data, s.traditional ); + } + + // Apply prefilters + inspectPrefiltersOrTransports( prefilters, s, options, jqXHR ); + + // If request was aborted inside a prefilter, stop there + if ( completed ) { + return jqXHR; + } + + // We can fire global events as of now if asked to + // Don't fire events if jQuery.event is undefined in an AMD-usage scenario (#15118) + fireGlobals = jQuery.event && s.global; + + // Watch for a new set of requests + if ( fireGlobals && jQuery.active++ === 0 ) { + jQuery.event.trigger( "ajaxStart" ); + } + + // Uppercase the type + s.type = s.type.toUpperCase(); + + // Determine if request has content + s.hasContent = !rnoContent.test( s.type ); + + // Save the URL in case we're toying with the If-Modified-Since + // and/or If-None-Match header later on + // Remove hash to simplify url manipulation + cacheURL = s.url.replace( rhash, "" ); + + // More options handling for requests with no content + if ( !s.hasContent ) { + + // Remember the hash so we can put it back + uncached = s.url.slice( cacheURL.length ); + + // If data is available and should be processed, append data to url + if ( s.data && ( s.processData || typeof s.data === "string" ) ) { + cacheURL += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data; + + // #9682: remove data so that it's not used in an eventual retry + delete s.data; + } + + // Add or update anti-cache param if needed + if ( s.cache === false ) { + cacheURL = cacheURL.replace( rantiCache, "$1" ); + uncached = ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + ( nonce.guid++ ) + + uncached; + } + + // Put hash and anti-cache on the URL that will be requested (gh-1732) + s.url = cacheURL + uncached; + + // Change '%20' to '+' if this is encoded form body content (gh-2658) + } else if ( s.data && s.processData && + ( s.contentType || "" ).indexOf( "application/x-www-form-urlencoded" ) === 0 ) { + s.data = s.data.replace( r20, "+" ); + } + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + if ( jQuery.lastModified[ cacheURL ] ) { + jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] ); + } + if ( jQuery.etag[ cacheURL ] ) { + jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] ); + } + } + + // Set the correct header, if data is being sent + if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) { + jqXHR.setRequestHeader( "Content-Type", s.contentType ); + } + + // Set the Accepts header for the server, depending on the dataType + jqXHR.setRequestHeader( + "Accept", + s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ? + s.accepts[ s.dataTypes[ 0 ] ] + + ( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) : + s.accepts[ "*" ] + ); + + // Check for headers option + for ( i in s.headers ) { + jqXHR.setRequestHeader( i, s.headers[ i ] ); + } + + // Allow custom headers/mimetypes and early abort + if ( s.beforeSend && + ( s.beforeSend.call( callbackContext, jqXHR, s ) === false || completed ) ) { + + // Abort if not done already and return + return jqXHR.abort(); + } + + // Aborting is no longer a cancellation + strAbort = "abort"; + + // Install callbacks on deferreds + completeDeferred.add( s.complete ); + jqXHR.done( s.success ); + jqXHR.fail( s.error ); + + // Get transport + transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR ); + + // If no transport, we auto-abort + if ( !transport ) { + done( -1, "No Transport" ); + } else { + jqXHR.readyState = 1; + + // Send global event + if ( fireGlobals ) { + globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] ); + } + + // If request was aborted inside ajaxSend, stop there + if ( completed ) { + return jqXHR; + } + + // Timeout + if ( s.async && s.timeout > 0 ) { + timeoutTimer = window.setTimeout( function() { + jqXHR.abort( "timeout" ); + }, s.timeout ); + } + + try { + completed = false; + transport.send( requestHeaders, done ); + } catch ( e ) { + + // Rethrow post-completion exceptions + if ( completed ) { + throw e; + } + + // Propagate others as results + done( -1, e ); + } + } + + // Callback for when everything is done + function done( status, nativeStatusText, responses, headers ) { + var isSuccess, success, error, response, modified, + statusText = nativeStatusText; + + // Ignore repeat invocations + if ( completed ) { + return; + } + + completed = true; + + // Clear timeout if it exists + if ( timeoutTimer ) { + window.clearTimeout( timeoutTimer ); + } + + // Dereference transport for early garbage collection + // (no matter how long the jqXHR object will be used) + transport = undefined; + + // Cache response headers + responseHeadersString = headers || ""; + + // Set readyState + jqXHR.readyState = status > 0 ? 4 : 0; + + // Determine if successful + isSuccess = status >= 200 && status < 300 || status === 304; + + // Get response data + if ( responses ) { + response = ajaxHandleResponses( s, jqXHR, responses ); + } + + // Use a noop converter for missing script but not if jsonp + if ( !isSuccess && + jQuery.inArray( "script", s.dataTypes ) > -1 && + jQuery.inArray( "json", s.dataTypes ) < 0 ) { + s.converters[ "text script" ] = function() {}; + } + + // Convert no matter what (that way responseXXX fields are always set) + response = ajaxConvert( s, response, jqXHR, isSuccess ); + + // If successful, handle type chaining + if ( isSuccess ) { + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + modified = jqXHR.getResponseHeader( "Last-Modified" ); + if ( modified ) { + jQuery.lastModified[ cacheURL ] = modified; + } + modified = jqXHR.getResponseHeader( "etag" ); + if ( modified ) { + jQuery.etag[ cacheURL ] = modified; + } + } + + // if no content + if ( status === 204 || s.type === "HEAD" ) { + statusText = "nocontent"; + + // if not modified + } else if ( status === 304 ) { + statusText = "notmodified"; + + // If we have data, let's convert it + } else { + statusText = response.state; + success = response.data; + error = response.error; + isSuccess = !error; + } + } else { + + // Extract error from statusText and normalize for non-aborts + error = statusText; + if ( status || !statusText ) { + statusText = "error"; + if ( status < 0 ) { + status = 0; + } + } + } + + // Set data for the fake xhr object + jqXHR.status = status; + jqXHR.statusText = ( nativeStatusText || statusText ) + ""; + + // Success/Error + if ( isSuccess ) { + deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] ); + } else { + deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] ); + } + + // Status-dependent callbacks + jqXHR.statusCode( statusCode ); + statusCode = undefined; + + if ( fireGlobals ) { + globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError", + [ jqXHR, s, isSuccess ? success : error ] ); + } + + // Complete + completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] ); + + if ( fireGlobals ) { + globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] ); + + // Handle the global AJAX counter + if ( !( --jQuery.active ) ) { + jQuery.event.trigger( "ajaxStop" ); + } + } + } + + return jqXHR; + }, + + getJSON: function( url, data, callback ) { + return jQuery.get( url, data, callback, "json" ); + }, + + getScript: function( url, callback ) { + return jQuery.get( url, undefined, callback, "script" ); + } +} ); + +jQuery.each( [ "get", "post" ], function( _i, method ) { + jQuery[ method ] = function( url, data, callback, type ) { + + // Shift arguments if data argument was omitted + if ( isFunction( data ) ) { + type = type || callback; + callback = data; + data = undefined; + } + + // The url can be an options object (which then must have .url) + return jQuery.ajax( jQuery.extend( { + url: url, + type: method, + dataType: type, + data: data, + success: callback + }, jQuery.isPlainObject( url ) && url ) ); + }; +} ); + +jQuery.ajaxPrefilter( function( s ) { + var i; + for ( i in s.headers ) { + if ( i.toLowerCase() === "content-type" ) { + s.contentType = s.headers[ i ] || ""; + } + } +} ); + + +jQuery._evalUrl = function( url, options, doc ) { + return jQuery.ajax( { + url: url, + + // Make this explicit, since user can override this through ajaxSetup (#11264) + type: "GET", + dataType: "script", + cache: true, + async: false, + global: false, + + // Only evaluate the response if it is successful (gh-4126) + // dataFilter is not invoked for failure responses, so using it instead + // of the default converter is kludgy but it works. + converters: { + "text script": function() {} + }, + dataFilter: function( response ) { + jQuery.globalEval( response, options, doc ); + } + } ); +}; + + +jQuery.fn.extend( { + wrapAll: function( html ) { + var wrap; + + if ( this[ 0 ] ) { + if ( isFunction( html ) ) { + html = html.call( this[ 0 ] ); + } + + // The elements to wrap the target around + wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true ); + + if ( this[ 0 ].parentNode ) { + wrap.insertBefore( this[ 0 ] ); + } + + wrap.map( function() { + var elem = this; + + while ( elem.firstElementChild ) { + elem = elem.firstElementChild; + } + + return elem; + } ).append( this ); + } + + return this; + }, + + wrapInner: function( html ) { + if ( isFunction( html ) ) { + return this.each( function( i ) { + jQuery( this ).wrapInner( html.call( this, i ) ); + } ); + } + + return this.each( function() { + var self = jQuery( this ), + contents = self.contents(); + + if ( contents.length ) { + contents.wrapAll( html ); + + } else { + self.append( html ); + } + } ); + }, + + wrap: function( html ) { + var htmlIsFunction = isFunction( html ); + + return this.each( function( i ) { + jQuery( this ).wrapAll( htmlIsFunction ? html.call( this, i ) : html ); + } ); + }, + + unwrap: function( selector ) { + this.parent( selector ).not( "body" ).each( function() { + jQuery( this ).replaceWith( this.childNodes ); + } ); + return this; + } +} ); + + +jQuery.expr.pseudos.hidden = function( elem ) { + return !jQuery.expr.pseudos.visible( elem ); +}; +jQuery.expr.pseudos.visible = function( elem ) { + return !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length ); +}; + + + + +jQuery.ajaxSettings.xhr = function() { + try { + return new window.XMLHttpRequest(); + } catch ( e ) {} +}; + +var xhrSuccessStatus = { + + // File protocol always yields status code 0, assume 200 + 0: 200, + + // Support: IE <=9 only + // #1450: sometimes IE returns 1223 when it should be 204 + 1223: 204 + }, + xhrSupported = jQuery.ajaxSettings.xhr(); + +support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported ); +support.ajax = xhrSupported = !!xhrSupported; + +jQuery.ajaxTransport( function( options ) { + var callback, errorCallback; + + // Cross domain only allowed if supported through XMLHttpRequest + if ( support.cors || xhrSupported && !options.crossDomain ) { + return { + send: function( headers, complete ) { + var i, + xhr = options.xhr(); + + xhr.open( + options.type, + options.url, + options.async, + options.username, + options.password + ); + + // Apply custom fields if provided + if ( options.xhrFields ) { + for ( i in options.xhrFields ) { + xhr[ i ] = options.xhrFields[ i ]; + } + } + + // Override mime type if needed + if ( options.mimeType && xhr.overrideMimeType ) { + xhr.overrideMimeType( options.mimeType ); + } + + // X-Requested-With header + // For cross-domain requests, seeing as conditions for a preflight are + // akin to a jigsaw puzzle, we simply never set it to be sure. + // (it can always be set on a per-request basis or even using ajaxSetup) + // For same-domain requests, won't change header if already provided. + if ( !options.crossDomain && !headers[ "X-Requested-With" ] ) { + headers[ "X-Requested-With" ] = "XMLHttpRequest"; + } + + // Set headers + for ( i in headers ) { + xhr.setRequestHeader( i, headers[ i ] ); + } + + // Callback + callback = function( type ) { + return function() { + if ( callback ) { + callback = errorCallback = xhr.onload = + xhr.onerror = xhr.onabort = xhr.ontimeout = + xhr.onreadystatechange = null; + + if ( type === "abort" ) { + xhr.abort(); + } else if ( type === "error" ) { + + // Support: IE <=9 only + // On a manual native abort, IE9 throws + // errors on any property access that is not readyState + if ( typeof xhr.status !== "number" ) { + complete( 0, "error" ); + } else { + complete( + + // File: protocol always yields status 0; see #8605, #14207 + xhr.status, + xhr.statusText + ); + } + } else { + complete( + xhrSuccessStatus[ xhr.status ] || xhr.status, + xhr.statusText, + + // Support: IE <=9 only + // IE9 has no XHR2 but throws on binary (trac-11426) + // For XHR2 non-text, let the caller handle it (gh-2498) + ( xhr.responseType || "text" ) !== "text" || + typeof xhr.responseText !== "string" ? + { binary: xhr.response } : + { text: xhr.responseText }, + xhr.getAllResponseHeaders() + ); + } + } + }; + }; + + // Listen to events + xhr.onload = callback(); + errorCallback = xhr.onerror = xhr.ontimeout = callback( "error" ); + + // Support: IE 9 only + // Use onreadystatechange to replace onabort + // to handle uncaught aborts + if ( xhr.onabort !== undefined ) { + xhr.onabort = errorCallback; + } else { + xhr.onreadystatechange = function() { + + // Check readyState before timeout as it changes + if ( xhr.readyState === 4 ) { + + // Allow onerror to be called first, + // but that will not handle a native abort + // Also, save errorCallback to a variable + // as xhr.onerror cannot be accessed + window.setTimeout( function() { + if ( callback ) { + errorCallback(); + } + } ); + } + }; + } + + // Create the abort callback + callback = callback( "abort" ); + + try { + + // Do send the request (this may raise an exception) + xhr.send( options.hasContent && options.data || null ); + } catch ( e ) { + + // #14683: Only rethrow if this hasn't been notified as an error yet + if ( callback ) { + throw e; + } + } + }, + + abort: function() { + if ( callback ) { + callback(); + } + } + }; + } +} ); + + + + +// Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432) +jQuery.ajaxPrefilter( function( s ) { + if ( s.crossDomain ) { + s.contents.script = false; + } +} ); + +// Install script dataType +jQuery.ajaxSetup( { + accepts: { + script: "text/javascript, application/javascript, " + + "application/ecmascript, application/x-ecmascript" + }, + contents: { + script: /\b(?:java|ecma)script\b/ + }, + converters: { + "text script": function( text ) { + jQuery.globalEval( text ); + return text; + } + } +} ); + +// Handle cache's special case and crossDomain +jQuery.ajaxPrefilter( "script", function( s ) { + if ( s.cache === undefined ) { + s.cache = false; + } + if ( s.crossDomain ) { + s.type = "GET"; + } +} ); + +// Bind script tag hack transport +jQuery.ajaxTransport( "script", function( s ) { + + // This transport only deals with cross domain or forced-by-attrs requests + if ( s.crossDomain || s.scriptAttrs ) { + var script, callback; + return { + send: function( _, complete ) { + script = jQuery( " + + + + + Contents + + + + + + Menu + + + + + + + + Expand + + + + + + Light mode + + + + + + + + + + + + + + Dark mode + + + + + + + Auto light/dark mode + + + + + + + + + + + + + + + + + + + +
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+

Code Examples#

+

A number of examples are included in the source distribution of Reticulum. +You can use these examples to learn how to write your own programs.

+
+

Minimal#

+

The Minimal example demonstrates the bare-minimum setup required to connect to +a Reticulum network from your program. In about five lines of code, you will +have the Reticulum Network Stack initialised, and ready to pass traffic in your +program.

+
##########################################################
+# This RNS example demonstrates a minimal setup, that    #
+# will start up the Reticulum Network Stack, generate a  #
+# new destination, and let the user send an announce.    #
+##########################################################
+
+import argparse
+import RNS
+
+# Let's define an app name. We'll use this for all
+# destinations we create. Since this basic example
+# is part of a range of example utilities, we'll put
+# them all within the app namespace "example_utilities"
+APP_NAME = "example_utilities"
+
+# This initialisation is executed when the program is started
+def program_setup(configpath):
+    # We must first initialise Reticulum
+    reticulum = RNS.Reticulum(configpath)
+    
+    # Randomly create a new identity for our example
+    identity = RNS.Identity()
+
+    # Using the identity we just created, we create a destination.
+    # Destinations are endpoints in Reticulum, that can be addressed
+    # and communicated with. Destinations can also announce their
+    # existence, which will let the network know they are reachable
+    # and autoomatically create paths to them, from anywhere else
+    # in the network.
+    destination = RNS.Destination(
+        identity,
+        RNS.Destination.IN,
+        RNS.Destination.SINGLE,
+        APP_NAME,
+        "minimalsample"
+    )
+
+    # We configure the destination to automatically prove all
+    # packets adressed to it. By doing this, RNS will automatically
+    # generate a proof for each incoming packet and transmit it
+    # back to the sender of that packet. This will let anyone that
+    # tries to communicate with the destination know whether their
+    # communication was received correctly.
+    destination.set_proof_strategy(RNS.Destination.PROVE_ALL)
+    
+    # Everything's ready!
+    # Let's hand over control to the announce loop
+    announceLoop(destination)
+
+
+def announceLoop(destination):
+    # Let the user know that everything is ready
+    RNS.log(
+        "Minimal example "+
+        RNS.prettyhexrep(destination.hash)+
+        " running, hit enter to manually send an announce (Ctrl-C to quit)"
+    )
+
+    # We enter a loop that runs until the users exits.
+    # If the user hits enter, we will announce our server
+    # destination on the network, which will let clients
+    # know how to create messages directed towards it.
+    while True:
+        entered = input()
+        destination.announce()
+        RNS.log("Sent announce from "+RNS.prettyhexrep(destination.hash))
+
+
+##########################################################
+#### Program Startup #####################################
+##########################################################
+
+# This part of the program gets run at startup,
+# and parses input from the user, and then starts
+# the desired program mode.
+if __name__ == "__main__":
+    try:
+        parser = argparse.ArgumentParser(
+            description="Minimal example to start Reticulum and create a destination"
+        )
+
+        parser.add_argument(
+            "--config",
+            action="store",
+            default=None,
+            help="path to alternative Reticulum config directory",
+            type=str
+        )
+
+        args = parser.parse_args()
+
+        if args.config:
+            configarg = args.config
+        else:
+            configarg = None
+
+        program_setup(configarg)
+
+    except KeyboardInterrupt:
+        print("")
+        exit()
+
+
+

This example can also be found at https://github.com/markqvist/Reticulum/blob/master/Examples/Minimal.py.

+
+
+

Announce#

+

The Announce example builds upon the previous example by exploring how to +announce a destination on the network, and how to let your program receive +notifications about announces from relevant destinations.

+
##########################################################
+# This RNS example demonstrates setting up announce      #
+# callbacks, which will let an application receive a     #
+# notification when an announce relevant for it arrives  #
+##########################################################
+
+import argparse
+import random
+import RNS
+
+# Let's define an app name. We'll use this for all
+# destinations we create. Since this basic example
+# is part of a range of example utilities, we'll put
+# them all within the app namespace "example_utilities"
+APP_NAME = "example_utilities"
+
+# We initialise two lists of strings to use as app_data
+fruits = ["Peach", "Quince", "Date", "Tangerine", "Pomelo", "Carambola", "Grape"]
+noble_gases = ["Helium", "Neon", "Argon", "Krypton", "Xenon", "Radon", "Oganesson"]
+
+# This initialisation is executed when the program is started
+def program_setup(configpath):
+    # We must first initialise Reticulum
+    reticulum = RNS.Reticulum(configpath)
+    
+    # Randomly create a new identity for our example
+    identity = RNS.Identity()
+
+    # Using the identity we just created, we create two destinations
+    # in the "example_utilities.announcesample" application space.
+    #
+    # Destinations are endpoints in Reticulum, that can be addressed
+    # and communicated with. Destinations can also announce their
+    # existence, which will let the network know they are reachable
+    # and autoomatically create paths to them, from anywhere else
+    # in the network.
+    destination_1 = RNS.Destination(
+        identity,
+        RNS.Destination.IN,
+        RNS.Destination.SINGLE,
+        APP_NAME,
+        "announcesample",
+        "fruits"
+    )
+
+    destination_2 = RNS.Destination(
+        identity,
+        RNS.Destination.IN,
+        RNS.Destination.SINGLE,
+        APP_NAME,
+        "announcesample",
+        "noble_gases"
+    )
+
+    # We configure the destinations to automatically prove all
+    # packets adressed to it. By doing this, RNS will automatically
+    # generate a proof for each incoming packet and transmit it
+    # back to the sender of that packet. This will let anyone that
+    # tries to communicate with the destination know whether their
+    # communication was received correctly.
+    destination_1.set_proof_strategy(RNS.Destination.PROVE_ALL)
+    destination_2.set_proof_strategy(RNS.Destination.PROVE_ALL)
+
+    # We create an announce handler and configure it to only ask for
+    # announces from "example_utilities.announcesample.fruits".
+    # Try changing the filter and see what happens.
+    announce_handler = ExampleAnnounceHandler(
+        aspect_filter="example_utilities.announcesample.fruits"
+    )
+
+    # We register the announce handler with Reticulum
+    RNS.Transport.register_announce_handler(announce_handler)
+    
+    # Everything's ready!
+    # Let's hand over control to the announce loop
+    announceLoop(destination_1, destination_2)
+
+
+def announceLoop(destination_1, destination_2):
+    # Let the user know that everything is ready
+    RNS.log("Announce example running, hit enter to manually send an announce (Ctrl-C to quit)")
+
+    # We enter a loop that runs until the users exits.
+    # If the user hits enter, we will announce our server
+    # destination on the network, which will let clients
+    # know how to create messages directed towards it.
+    while True:
+        entered = input()
+        
+        # Randomly select a fruit
+        fruit = fruits[random.randint(0,len(fruits)-1)]
+
+        # Send the announce including the app data
+        destination_1.announce(app_data=fruit.encode("utf-8"))
+        RNS.log(
+            "Sent announce from "+
+            RNS.prettyhexrep(destination_1.hash)+
+            " ("+destination_1.name+")"
+        )
+
+        # Randomly select a noble gas
+        noble_gas = noble_gases[random.randint(0,len(noble_gases)-1)]
+
+        # Send the announce including the app data
+        destination_2.announce(app_data=noble_gas.encode("utf-8"))
+        RNS.log(
+            "Sent announce from "+
+            RNS.prettyhexrep(destination_2.hash)+
+            " ("+destination_2.name+")"
+        )
+
+# We will need to define an announce handler class that
+# Reticulum can message when an announce arrives.
+class ExampleAnnounceHandler:
+    # The initialisation method takes the optional
+    # aspect_filter argument. If aspect_filter is set to
+    # None, all announces will be passed to the instance.
+    # If only some announces are wanted, it can be set to
+    # an aspect string.
+    def __init__(self, aspect_filter=None):
+        self.aspect_filter = aspect_filter
+
+    # This method will be called by Reticulums Transport
+    # system when an announce arrives that matches the
+    # configured aspect filter. Filters must be specific,
+    # and cannot use wildcards.
+    def received_announce(self, destination_hash, announced_identity, app_data):
+        RNS.log(
+            "Received an announce from "+
+            RNS.prettyhexrep(destination_hash)
+        )
+
+        if app_data:
+            RNS.log(
+                "The announce contained the following app data: "+
+                app_data.decode("utf-8")
+            )
+
+##########################################################
+#### Program Startup #####################################
+##########################################################
+
+# This part of the program gets run at startup,
+# and parses input from the user, and then starts
+# the desired program mode.
+if __name__ == "__main__":
+    try:
+        parser = argparse.ArgumentParser(
+            description="Reticulum example that demonstrates announces and announce handlers"
+        )
+
+        parser.add_argument(
+            "--config",
+            action="store",
+            default=None,
+            help="path to alternative Reticulum config directory",
+            type=str
+        )
+
+        args = parser.parse_args()
+
+        if args.config:
+            configarg = args.config
+        else:
+            configarg = None
+
+        program_setup(configarg)
+
+    except KeyboardInterrupt:
+        print("")
+        exit()
+
+
+

This example can also be found at https://github.com/markqvist/Reticulum/blob/master/Examples/Announce.py.

+
+
+

Broadcast#

+

The Broadcast example explores how to transmit plaintext broadcast messages +over the network.

+
##########################################################
+# This RNS example demonstrates broadcasting unencrypted #
+# information to any listening destinations.             #
+##########################################################
+
+import sys
+import argparse
+import RNS
+
+# Let's define an app name. We'll use this for all
+# destinations we create. Since this basic example
+# is part of a range of example utilities, we'll put
+# them all within the app namespace "example_utilities"
+APP_NAME = "example_utilities"
+
+# This initialisation is executed when the program is started
+def program_setup(configpath, channel=None):
+    # We must first initialise Reticulum
+    reticulum = RNS.Reticulum(configpath)
+    
+    # If the user did not select a "channel" we use
+    # a default one called "public_information".
+    # This "channel" is added to the destination name-
+    # space, so the user can select different broadcast
+    # channels.
+    if channel == None:
+        channel = "public_information"
+
+    # We create a PLAIN destination. This is an uncencrypted endpoint
+    # that anyone can listen to and send information to.
+    broadcast_destination = RNS.Destination(
+        None,
+        RNS.Destination.IN,
+        RNS.Destination.PLAIN,
+        APP_NAME,
+        "broadcast",
+        channel
+    )
+
+    # We specify a callback that will get called every time
+    # the destination receives data.
+    broadcast_destination.set_packet_callback(packet_callback)
+    
+    # Everything's ready!
+    # Let's hand over control to the main loop
+    broadcastLoop(broadcast_destination)
+
+def packet_callback(data, packet):
+    # Simply print out the received data
+    print("")
+    print("Received data: "+data.decode("utf-8")+"\r\n> ", end="")
+    sys.stdout.flush()
+
+def broadcastLoop(destination):
+    # Let the user know that everything is ready
+    RNS.log(
+        "Broadcast example "+
+        RNS.prettyhexrep(destination.hash)+
+        " running, enter text and hit enter to broadcast (Ctrl-C to quit)"
+    )
+
+    # We enter a loop that runs until the users exits.
+    # If the user hits enter, we will send the information
+    # that the user entered into the prompt.
+    while True:
+        print("> ", end="")
+        entered = input()
+
+        if entered != "":
+            data    = entered.encode("utf-8")
+            packet  = RNS.Packet(destination, data)
+            packet.send()
+
+
+
+##########################################################
+#### Program Startup #####################################
+##########################################################
+
+# This part of the program gets run at startup,
+# and parses input from the user, and then starts
+# the program.
+if __name__ == "__main__":
+    try:
+        parser = argparse.ArgumentParser(
+            description="Reticulum example demonstrating sending and receiving broadcasts"
+        )
+
+        parser.add_argument(
+            "--config",
+            action="store",
+            default=None,
+            help="path to alternative Reticulum config directory",
+            type=str
+        )
+
+        parser.add_argument(
+            "--channel",
+            action="store",
+            default=None,
+            help="broadcast channel name",
+            type=str
+        )
+
+        args = parser.parse_args()
+
+        if args.config:
+            configarg = args.config
+        else:
+            configarg = None
+
+        if args.channel:
+            channelarg = args.channel
+        else:
+            channelarg = None
+
+        program_setup(configarg, channelarg)
+
+    except KeyboardInterrupt:
+        print("")
+        exit()
+
+
+

This example can also be found at https://github.com/markqvist/Reticulum/blob/master/Examples/Broadcast.py.

+
+
+

Echo#

+

The Echo example demonstrates communication between two destinations using +the Packet interface.

+
##########################################################
+# This RNS example demonstrates a simple client/server   #
+# echo utility. A client can send an echo request to the #
+# server, and the server will respond by proving receipt #
+# of the packet.                                         #
+##########################################################
+
+import argparse
+import RNS
+
+# Let's define an app name. We'll use this for all
+# destinations we create. Since this echo example
+# is part of a range of example utilities, we'll put
+# them all within the app namespace "example_utilities"
+APP_NAME = "example_utilities"
+
+
+##########################################################
+#### Server Part #########################################
+##########################################################
+
+# This initialisation is executed when the users chooses
+# to run as a server
+def server(configpath):
+    global reticulum
+
+    # We must first initialise Reticulum
+    reticulum = RNS.Reticulum(configpath)
+    
+    # Randomly create a new identity for our echo server
+    server_identity = RNS.Identity()
+
+    # We create a destination that clients can query. We want
+    # to be able to verify echo replies to our clients, so we
+    # create a "single" destination that can receive encrypted
+    # messages. This way the client can send a request and be
+    # certain that no-one else than this destination was able
+    # to read it. 
+    echo_destination = RNS.Destination(
+        server_identity,
+        RNS.Destination.IN,
+        RNS.Destination.SINGLE,
+        APP_NAME,
+        "echo",
+        "request"
+    )
+
+    # We configure the destination to automatically prove all
+    # packets adressed to it. By doing this, RNS will automatically
+    # generate a proof for each incoming packet and transmit it
+    # back to the sender of that packet.
+    echo_destination.set_proof_strategy(RNS.Destination.PROVE_ALL)
+    
+    # Tell the destination which function in our program to
+    # run when a packet is received. We do this so we can
+    # print a log message when the server receives a request
+    echo_destination.set_packet_callback(server_callback)
+
+    # Everything's ready!
+    # Let's Wait for client requests or user input
+    announceLoop(echo_destination)
+
+
+def announceLoop(destination):
+    # Let the user know that everything is ready
+    RNS.log(
+        "Echo server "+
+        RNS.prettyhexrep(destination.hash)+
+        " running, hit enter to manually send an announce (Ctrl-C to quit)"
+    )
+
+    # We enter a loop that runs until the users exits.
+    # If the user hits enter, we will announce our server
+    # destination on the network, which will let clients
+    # know how to create messages directed towards it.
+    while True:
+        entered = input()
+        destination.announce()
+        RNS.log("Sent announce from "+RNS.prettyhexrep(destination.hash))
+
+
+def server_callback(message, packet):
+    global reticulum
+    
+    # Tell the user that we received an echo request, and
+    # that we are going to send a reply to the requester.
+    # Sending the proof is handled automatically, since we
+    # set up the destination to prove all incoming packets.
+
+    reception_stats = ""
+    if reticulum.is_connected_to_shared_instance:
+        reception_rssi = reticulum.get_packet_rssi(packet.packet_hash)
+        reception_snr  = reticulum.get_packet_snr(packet.packet_hash)
+
+        if reception_rssi != None:
+            reception_stats += " [RSSI "+str(reception_rssi)+" dBm]"
+        
+        if reception_snr != None:
+            reception_stats += " [SNR "+str(reception_snr)+" dBm]"
+
+    else:
+        if packet.rssi != None:
+            reception_stats += " [RSSI "+str(packet.rssi)+" dBm]"
+        
+        if packet.snr != None:
+            reception_stats += " [SNR "+str(packet.snr)+" dB]"
+
+    RNS.log("Received packet from echo client, proof sent"+reception_stats)
+
+
+##########################################################
+#### Client Part #########################################
+##########################################################
+
+# This initialisation is executed when the users chooses
+# to run as a client
+def client(destination_hexhash, configpath, timeout=None):
+    global reticulum
+    
+    # We need a binary representation of the destination
+    # hash that was entered on the command line
+    try:
+        dest_len = (RNS.Reticulum.TRUNCATED_HASHLENGTH//8)*2
+        if len(destination_hexhash) != dest_len:
+            raise ValueError(
+                "Destination length is invalid, must be {hex} hexadecimal characters ({byte} bytes).".format(hex=dest_len, byte=dest_len//2)
+            )
+
+        destination_hash = bytes.fromhex(destination_hexhash)
+    except Exception as e:
+        RNS.log("Invalid destination entered. Check your input!")
+        RNS.log(str(e)+"\n")
+        exit()
+
+    # We must first initialise Reticulum
+    reticulum = RNS.Reticulum(configpath)
+
+    # We override the loglevel to provide feedback when
+    # an announce is received
+    if RNS.loglevel < RNS.LOG_INFO:
+        RNS.loglevel = RNS.LOG_INFO
+
+    # Tell the user that the client is ready!
+    RNS.log(
+        "Echo client ready, hit enter to send echo request to "+
+        destination_hexhash+
+        " (Ctrl-C to quit)"
+    )
+
+    # We enter a loop that runs until the user exits.
+    # If the user hits enter, we will try to send an
+    # echo request to the destination specified on the
+    # command line.
+    while True:
+        input()
+        
+        # Let's first check if RNS knows a path to the destination.
+        # If it does, we'll load the server identity and create a packet
+        if RNS.Transport.has_path(destination_hash):
+
+            # To address the server, we need to know it's public
+            # key, so we check if Reticulum knows this destination.
+            # This is done by calling the "recall" method of the
+            # Identity module. If the destination is known, it will
+            # return an Identity instance that can be used in
+            # outgoing destinations.
+            server_identity = RNS.Identity.recall(destination_hash)
+
+            # We got the correct identity instance from the
+            # recall method, so let's create an outgoing
+            # destination. We use the naming convention:
+            # example_utilities.echo.request
+            # This matches the naming we specified in the
+            # server part of the code.
+            request_destination = RNS.Destination(
+                server_identity,
+                RNS.Destination.OUT,
+                RNS.Destination.SINGLE,
+                APP_NAME,
+                "echo",
+                "request"
+            )
+
+            # The destination is ready, so let's create a packet.
+            # We set the destination to the request_destination
+            # that was just created, and the only data we add
+            # is a random hash.
+            echo_request = RNS.Packet(request_destination, RNS.Identity.get_random_hash())
+
+            # Send the packet! If the packet is successfully
+            # sent, it will return a PacketReceipt instance.
+            packet_receipt = echo_request.send()
+
+            # If the user specified a timeout, we set this
+            # timeout on the packet receipt, and configure
+            # a callback function, that will get called if
+            # the packet times out.
+            if timeout != None:
+                packet_receipt.set_timeout(timeout)
+                packet_receipt.set_timeout_callback(packet_timed_out)
+
+            # We can then set a delivery callback on the receipt.
+            # This will get automatically called when a proof for
+            # this specific packet is received from the destination.
+            packet_receipt.set_delivery_callback(packet_delivered)
+
+            # Tell the user that the echo request was sent
+            RNS.log("Sent echo request to "+RNS.prettyhexrep(request_destination.hash))
+        else:
+            # If we do not know this destination, tell the
+            # user to wait for an announce to arrive.
+            RNS.log("Destination is not yet known. Requesting path...")
+            RNS.log("Hit enter to manually retry once an announce is received.")
+            RNS.Transport.request_path(destination_hash)
+
+# This function is called when our reply destination
+# receives a proof packet.
+def packet_delivered(receipt):
+    global reticulum
+
+    if receipt.status == RNS.PacketReceipt.DELIVERED:
+        rtt = receipt.get_rtt()
+        if (rtt >= 1):
+            rtt = round(rtt, 3)
+            rttstring = str(rtt)+" seconds"
+        else:
+            rtt = round(rtt*1000, 3)
+            rttstring = str(rtt)+" milliseconds"
+
+        reception_stats = ""
+        if reticulum.is_connected_to_shared_instance:
+            reception_rssi = reticulum.get_packet_rssi(receipt.proof_packet.packet_hash)
+            reception_snr  = reticulum.get_packet_snr(receipt.proof_packet.packet_hash)
+
+            if reception_rssi != None:
+                reception_stats += " [RSSI "+str(reception_rssi)+" dBm]"
+            
+            if reception_snr != None:
+                reception_stats += " [SNR "+str(reception_snr)+" dB]"
+
+        else:
+            if receipt.proof_packet != None:
+                if receipt.proof_packet.rssi != None:
+                    reception_stats += " [RSSI "+str(receipt.proof_packet.rssi)+" dBm]"
+                
+                if receipt.proof_packet.snr != None:
+                    reception_stats += " [SNR "+str(receipt.proof_packet.snr)+" dB]"
+
+        RNS.log(
+            "Valid reply received from "+
+            RNS.prettyhexrep(receipt.destination.hash)+
+            ", round-trip time is "+rttstring+
+            reception_stats
+        )
+
+# This function is called if a packet times out.
+def packet_timed_out(receipt):
+    if receipt.status == RNS.PacketReceipt.FAILED:
+        RNS.log("Packet "+RNS.prettyhexrep(receipt.hash)+" timed out")
+
+
+##########################################################
+#### Program Startup #####################################
+##########################################################
+
+# This part of the program gets run at startup,
+# and parses input from the user, and then starts
+# the desired program mode.
+if __name__ == "__main__":
+    try:
+        parser = argparse.ArgumentParser(description="Simple echo server and client utility")
+
+        parser.add_argument(
+            "-s",
+            "--server",
+            action="store_true",
+            help="wait for incoming packets from clients"
+        )
+
+        parser.add_argument(
+            "-t",
+            "--timeout",
+            action="store",
+            metavar="s",
+            default=None,
+            help="set a reply timeout in seconds",
+            type=float
+        )
+
+        parser.add_argument("--config",
+            action="store",
+            default=None,
+            help="path to alternative Reticulum config directory",
+            type=str
+        )
+
+        parser.add_argument(
+            "destination",
+            nargs="?",
+            default=None,
+            help="hexadecimal hash of the server destination",
+            type=str
+        )
+
+        args = parser.parse_args()
+
+        if args.server:
+            configarg=None
+            if args.config:
+                configarg = args.config
+            server(configarg)
+        else:
+            if args.config:
+                configarg = args.config
+            else:
+                configarg = None
+
+            if args.timeout:
+                timeoutarg = float(args.timeout)
+            else:
+                timeoutarg = None
+
+            if (args.destination == None):
+                print("")
+                parser.print_help()
+                print("")
+            else:
+                client(args.destination, configarg, timeout=timeoutarg)
+    except KeyboardInterrupt:
+        print("")
+        exit()
+
+
+

This example can also be found at https://github.com/markqvist/Reticulum/blob/master/Examples/Echo.py.

+
+ +
+

Identification#

+

The Identify example explores identifying an intiator of a link, once +the link has been established.

+
##########################################################
+# This RNS example demonstrates how to set up a link to  #
+# a destination, and identify the initiator to it's peer #
+##########################################################
+
+import os
+import sys
+import time
+import argparse
+import RNS
+
+# Let's define an app name. We'll use this for all
+# destinations we create. Since this echo example
+# is part of a range of example utilities, we'll put
+# them all within the app namespace "example_utilities"
+APP_NAME = "example_utilities"
+
+##########################################################
+#### Server Part #########################################
+##########################################################
+
+# A reference to the latest client link that connected
+latest_client_link = None
+
+# This initialisation is executed when the users chooses
+# to run as a server
+def server(configpath):
+    # We must first initialise Reticulum
+    reticulum = RNS.Reticulum(configpath)
+    
+    # Randomly create a new identity for our link example
+    server_identity = RNS.Identity()
+
+    # We create a destination that clients can connect to. We
+    # want clients to create links to this destination, so we
+    # need to create a "single" destination type.
+    server_destination = RNS.Destination(
+        server_identity,
+        RNS.Destination.IN,
+        RNS.Destination.SINGLE,
+        APP_NAME,
+        "identifyexample"
+    )
+
+    # We configure a function that will get called every time
+    # a new client creates a link to this destination.
+    server_destination.set_link_established_callback(client_connected)
+
+    # Everything's ready!
+    # Let's Wait for client requests or user input
+    server_loop(server_destination)
+
+def server_loop(destination):
+    # Let the user know that everything is ready
+    RNS.log(
+        "Link identification example "+
+        RNS.prettyhexrep(destination.hash)+
+        " running, waiting for a connection."
+    )
+
+    RNS.log("Hit enter to manually send an announce (Ctrl-C to quit)")
+
+    # We enter a loop that runs until the users exits.
+    # If the user hits enter, we will announce our server
+    # destination on the network, which will let clients
+    # know how to create messages directed towards it.
+    while True:
+        entered = input()
+        destination.announce()
+        RNS.log("Sent announce from "+RNS.prettyhexrep(destination.hash))
+
+# When a client establishes a link to our server
+# destination, this function will be called with
+# a reference to the link.
+def client_connected(link):
+    global latest_client_link
+
+    RNS.log("Client connected")
+    link.set_link_closed_callback(client_disconnected)
+    link.set_packet_callback(server_packet_received)
+    link.set_remote_identified_callback(remote_identified)
+    latest_client_link = link
+
+def client_disconnected(link):
+    RNS.log("Client disconnected")
+
+def remote_identified(link, identity):
+    RNS.log("Remote identified as: "+str(identity))
+
+def server_packet_received(message, packet):
+    global latest_client_link
+
+    # Get the originating identity for display
+    remote_peer =  "unidentified peer"
+    if packet.link.get_remote_identity() != None:
+        remote_peer = str(packet.link.get_remote_identity())
+
+    # When data is received over any active link,
+    # it will all be directed to the last client
+    # that connected.
+    text = message.decode("utf-8")
+
+    RNS.log("Received data from "+remote_peer+": "+text)
+    
+    reply_text = "I received \""+text+"\" over the link from "+remote_peer
+    reply_data = reply_text.encode("utf-8")
+    RNS.Packet(latest_client_link, reply_data).send()
+
+
+##########################################################
+#### Client Part #########################################
+##########################################################
+
+# A reference to the server link
+server_link = None
+
+# A reference to the client identity
+client_identity = None
+
+# This initialisation is executed when the users chooses
+# to run as a client
+def client(destination_hexhash, configpath):
+    global client_identity
+    # We need a binary representation of the destination
+    # hash that was entered on the command line
+    try:
+        dest_len = (RNS.Reticulum.TRUNCATED_HASHLENGTH//8)*2
+        if len(destination_hexhash) != dest_len:
+            raise ValueError(
+                "Destination length is invalid, must be {hex} hexadecimal characters ({byte} bytes).".format(hex=dest_len, byte=dest_len//2)
+            )
+
+        destination_hash = bytes.fromhex(destination_hexhash)
+    except:
+        RNS.log("Invalid destination entered. Check your input!\n")
+        exit()
+
+    # We must first initialise Reticulum
+    reticulum = RNS.Reticulum(configpath)
+
+    # Create a new client identity
+    client_identity = RNS.Identity()
+    RNS.log(
+        "Client created new identity "+
+        str(client_identity)
+    )
+
+    # Check if we know a path to the destination
+    if not RNS.Transport.has_path(destination_hash):
+        RNS.log("Destination is not yet known. Requesting path and waiting for announce to arrive...")
+        RNS.Transport.request_path(destination_hash)
+        while not RNS.Transport.has_path(destination_hash):
+            time.sleep(0.1)
+
+    # Recall the server identity
+    server_identity = RNS.Identity.recall(destination_hash)
+
+    # Inform the user that we'll begin connecting
+    RNS.log("Establishing link with server...")
+
+    # When the server identity is known, we set
+    # up a destination
+    server_destination = RNS.Destination(
+        server_identity,
+        RNS.Destination.OUT,
+        RNS.Destination.SINGLE,
+        APP_NAME,
+        "identifyexample"
+    )
+
+    # And create a link
+    link = RNS.Link(server_destination)
+
+    # We set a callback that will get executed
+    # every time a packet is received over the
+    # link
+    link.set_packet_callback(client_packet_received)
+
+    # We'll also set up functions to inform the
+    # user when the link is established or closed
+    link.set_link_established_callback(link_established)
+    link.set_link_closed_callback(link_closed)
+
+    # Everything is set up, so let's enter a loop
+    # for the user to interact with the example
+    client_loop()
+
+def client_loop():
+    global server_link
+
+    # Wait for the link to become active
+    while not server_link:
+        time.sleep(0.1)
+
+    should_quit = False
+    while not should_quit:
+        try:
+            print("> ", end=" ")
+            text = input()
+
+            # Check if we should quit the example
+            if text == "quit" or text == "q" or text == "exit":
+                should_quit = True
+                server_link.teardown()
+
+            # If not, send the entered text over the link
+            if text != "":
+                data = text.encode("utf-8")
+                if len(data) <= RNS.Link.MDU:
+                    RNS.Packet(server_link, data).send()
+                else:
+                    RNS.log(
+                        "Cannot send this packet, the data size of "+
+                        str(len(data))+" bytes exceeds the link packet MDU of "+
+                        str(RNS.Link.MDU)+" bytes",
+                        RNS.LOG_ERROR
+                    )
+
+        except Exception as e:
+            RNS.log("Error while sending data over the link: "+str(e))
+            should_quit = True
+            server_link.teardown()
+
+# This function is called when a link
+# has been established with the server
+def link_established(link):
+    # We store a reference to the link
+    # instance for later use
+    global server_link, client_identity
+    server_link = link
+
+    # Inform the user that the server is
+    # connected
+    RNS.log("Link established with server, identifying to remote peer...")
+
+    link.identify(client_identity)
+
+# When a link is closed, we'll inform the
+# user, and exit the program
+def link_closed(link):
+    if link.teardown_reason == RNS.Link.TIMEOUT:
+        RNS.log("The link timed out, exiting now")
+    elif link.teardown_reason == RNS.Link.DESTINATION_CLOSED:
+        RNS.log("The link was closed by the server, exiting now")
+    else:
+        RNS.log("Link closed, exiting now")
+    
+    RNS.Reticulum.exit_handler()
+    time.sleep(1.5)
+    os._exit(0)
+
+# When a packet is received over the link, we
+# simply print out the data.
+def client_packet_received(message, packet):
+    text = message.decode("utf-8")
+    RNS.log("Received data on the link: "+text)
+    print("> ", end=" ")
+    sys.stdout.flush()
+
+
+##########################################################
+#### Program Startup #####################################
+##########################################################
+
+# This part of the program runs at startup,
+# and parses input of from the user, and then
+# starts up the desired program mode.
+if __name__ == "__main__":
+    try:
+        parser = argparse.ArgumentParser(description="Simple link example")
+
+        parser.add_argument(
+            "-s",
+            "--server",
+            action="store_true",
+            help="wait for incoming link requests from clients"
+        )
+
+        parser.add_argument(
+            "--config",
+            action="store",
+            default=None,
+            help="path to alternative Reticulum config directory",
+            type=str
+        )
+
+        parser.add_argument(
+            "destination",
+            nargs="?",
+            default=None,
+            help="hexadecimal hash of the server destination",
+            type=str
+        )
+
+        args = parser.parse_args()
+
+        if args.config:
+            configarg = args.config
+        else:
+            configarg = None
+
+        if args.server:
+            server(configarg)
+        else:
+            if (args.destination == None):
+                print("")
+                parser.print_help()
+                print("")
+            else:
+                client(args.destination, configarg)
+
+    except KeyboardInterrupt:
+        print("")
+        exit()
+
+
+

This example can also be found at https://github.com/markqvist/Reticulum/blob/master/Examples/Identify.py.

+
+
+

Requests & Responses#

+

The Request example explores sendig requests and receiving responses.

+
##########################################################
+# This RNS example demonstrates how to set perform       #
+# requests and receive responses over a link.            #
+##########################################################
+
+import os
+import sys
+import time
+import random
+import argparse
+import RNS
+
+# Let's define an app name. We'll use this for all
+# destinations we create. Since this echo example
+# is part of a range of example utilities, we'll put
+# them all within the app namespace "example_utilities"
+APP_NAME = "example_utilities"
+
+##########################################################
+#### Server Part #########################################
+##########################################################
+
+# A reference to the latest client link that connected
+latest_client_link = None
+
+def random_text_generator(path, data, request_id, link_id, remote_identity, requested_at):
+    RNS.log("Generating response to request "+RNS.prettyhexrep(request_id)+" on link "+RNS.prettyhexrep(link_id))
+    texts = ["They looked up", "On each full moon", "Becky was upset", "I’ll stay away from it", "The pet shop stocks everything"]
+    return texts[random.randint(0, len(texts)-1)]
+
+# This initialisation is executed when the users chooses
+# to run as a server
+def server(configpath):
+    # We must first initialise Reticulum
+    reticulum = RNS.Reticulum(configpath)
+    
+    # Randomly create a new identity for our link example
+    server_identity = RNS.Identity()
+
+    # We create a destination that clients can connect to. We
+    # want clients to create links to this destination, so we
+    # need to create a "single" destination type.
+    server_destination = RNS.Destination(
+        server_identity,
+        RNS.Destination.IN,
+        RNS.Destination.SINGLE,
+        APP_NAME,
+        "requestexample"
+    )
+
+    # We configure a function that will get called every time
+    # a new client creates a link to this destination.
+    server_destination.set_link_established_callback(client_connected)
+
+    # We register a request handler for handling incoming
+    # requests over any established links.
+    server_destination.register_request_handler(
+        "/random/text",
+        response_generator = random_text_generator,
+        allow = RNS.Destination.ALLOW_ALL
+    )
+
+    # Everything's ready!
+    # Let's Wait for client requests or user input
+    server_loop(server_destination)
+
+def server_loop(destination):
+    # Let the user know that everything is ready
+    RNS.log(
+        "Request example "+
+        RNS.prettyhexrep(destination.hash)+
+        " running, waiting for a connection."
+    )
+
+    RNS.log("Hit enter to manually send an announce (Ctrl-C to quit)")
+
+    # We enter a loop that runs until the users exits.
+    # If the user hits enter, we will announce our server
+    # destination on the network, which will let clients
+    # know how to create messages directed towards it.
+    while True:
+        entered = input()
+        destination.announce()
+        RNS.log("Sent announce from "+RNS.prettyhexrep(destination.hash))
+
+# When a client establishes a link to our server
+# destination, this function will be called with
+# a reference to the link.
+def client_connected(link):
+    global latest_client_link
+
+    RNS.log("Client connected")
+    link.set_link_closed_callback(client_disconnected)
+    latest_client_link = link
+
+def client_disconnected(link):
+    RNS.log("Client disconnected")
+
+
+##########################################################
+#### Client Part #########################################
+##########################################################
+
+# A reference to the server link
+server_link = None
+
+# This initialisation is executed when the users chooses
+# to run as a client
+def client(destination_hexhash, configpath):
+    # We need a binary representation of the destination
+    # hash that was entered on the command line
+    try:
+        dest_len = (RNS.Reticulum.TRUNCATED_HASHLENGTH//8)*2
+        if len(destination_hexhash) != dest_len:
+            raise ValueError(
+                "Destination length is invalid, must be {hex} hexadecimal characters ({byte} bytes).".format(hex=dest_len, byte=dest_len//2)
+            )
+            
+        destination_hash = bytes.fromhex(destination_hexhash)
+    except:
+        RNS.log("Invalid destination entered. Check your input!\n")
+        exit()
+
+    # We must first initialise Reticulum
+    reticulum = RNS.Reticulum(configpath)
+
+    # Check if we know a path to the destination
+    if not RNS.Transport.has_path(destination_hash):
+        RNS.log("Destination is not yet known. Requesting path and waiting for announce to arrive...")
+        RNS.Transport.request_path(destination_hash)
+        while not RNS.Transport.has_path(destination_hash):
+            time.sleep(0.1)
+
+    # Recall the server identity
+    server_identity = RNS.Identity.recall(destination_hash)
+
+    # Inform the user that we'll begin connecting
+    RNS.log("Establishing link with server...")
+
+    # When the server identity is known, we set
+    # up a destination
+    server_destination = RNS.Destination(
+        server_identity,
+        RNS.Destination.OUT,
+        RNS.Destination.SINGLE,
+        APP_NAME,
+        "requestexample"
+    )
+
+    # And create a link
+    link = RNS.Link(server_destination)
+
+    # We'll set up functions to inform the
+    # user when the link is established or closed
+    link.set_link_established_callback(link_established)
+    link.set_link_closed_callback(link_closed)
+
+    # Everything is set up, so let's enter a loop
+    # for the user to interact with the example
+    client_loop()
+
+def client_loop():
+    global server_link
+
+    # Wait for the link to become active
+    while not server_link:
+        time.sleep(0.1)
+
+    should_quit = False
+    while not should_quit:
+        try:
+            print("> ", end=" ")
+            text = input()
+
+            # Check if we should quit the example
+            if text == "quit" or text == "q" or text == "exit":
+                should_quit = True
+                server_link.teardown()
+
+            else:
+                server_link.request(
+                    "/random/text",
+                    data = None,
+                    response_callback = got_response,
+                    failed_callback = request_failed
+                )
+
+
+        except Exception as e:
+            RNS.log("Error while sending request over the link: "+str(e))
+            should_quit = True
+            server_link.teardown()
+
+def got_response(request_receipt):
+    request_id = request_receipt.request_id
+    response = request_receipt.response
+
+    RNS.log("Got response for request "+RNS.prettyhexrep(request_id)+": "+str(response))
+
+def request_received(request_receipt):
+    RNS.log("The request "+RNS.prettyhexrep(request_receipt.request_id)+" was received by the remote peer.")
+
+def request_failed(request_receipt):
+    RNS.log("The request "+RNS.prettyhexrep(request_receipt.request_id)+" failed.")
+
+
+# This function is called when a link
+# has been established with the server
+def link_established(link):
+    # We store a reference to the link
+    # instance for later use
+    global server_link
+    server_link = link
+
+    # Inform the user that the server is
+    # connected
+    RNS.log("Link established with server, hit enter to perform a request, or type in \"quit\" to quit")
+
+# When a link is closed, we'll inform the
+# user, and exit the program
+def link_closed(link):
+    if link.teardown_reason == RNS.Link.TIMEOUT:
+        RNS.log("The link timed out, exiting now")
+    elif link.teardown_reason == RNS.Link.DESTINATION_CLOSED:
+        RNS.log("The link was closed by the server, exiting now")
+    else:
+        RNS.log("Link closed, exiting now")
+    
+    RNS.Reticulum.exit_handler()
+    time.sleep(1.5)
+    os._exit(0)
+
+
+##########################################################
+#### Program Startup #####################################
+##########################################################
+
+# This part of the program runs at startup,
+# and parses input of from the user, and then
+# starts up the desired program mode.
+if __name__ == "__main__":
+    try:
+        parser = argparse.ArgumentParser(description="Simple request/response example")
+
+        parser.add_argument(
+            "-s",
+            "--server",
+            action="store_true",
+            help="wait for incoming requests from clients"
+        )
+
+        parser.add_argument(
+            "--config",
+            action="store",
+            default=None,
+            help="path to alternative Reticulum config directory",
+            type=str
+        )
+
+        parser.add_argument(
+            "destination",
+            nargs="?",
+            default=None,
+            help="hexadecimal hash of the server destination",
+            type=str
+        )
+
+        args = parser.parse_args()
+
+        if args.config:
+            configarg = args.config
+        else:
+            configarg = None
+
+        if args.server:
+            server(configarg)
+        else:
+            if (args.destination == None):
+                print("")
+                parser.print_help()
+                print("")
+            else:
+                client(args.destination, configarg)
+
+    except KeyboardInterrupt:
+        print("")
+        exit()
+
+
+

This example can also be found at https://github.com/markqvist/Reticulum/blob/master/Examples/Request.py.

+
+
+

Channel#

+

The Channel example explores using a Channel to send structured +data between peers of a Link.

+
##########################################################
+# This RNS example demonstrates how to set up a link to  #
+# a destination, and pass structured messages over it    #
+# using a channel.                                       #
+##########################################################
+
+import os
+import sys
+import time
+import argparse
+from datetime import datetime
+
+import RNS
+from RNS.vendor import umsgpack
+
+# Let's define an app name. We'll use this for all
+# destinations we create. Since this echo example
+# is part of a range of example utilities, we'll put
+# them all within the app namespace "example_utilities"
+APP_NAME = "example_utilities"
+
+##########################################################
+#### Shared Objects ######################################
+##########################################################
+
+# Channel data must be structured in a subclass of
+# MessageBase. This ensures that the channel will be able
+# to serialize and deserialize the object and multiplex it
+# with other objects. Both ends of a link will need the
+# same object definitions to be able to communicate over
+# a channel.
+#
+# Note: The objects we wish to use over the channel must
+# be registered with the channel, and each link has a
+# different channel instance. See the client_connected
+# and link_established functions in this example to see
+# how message types are registered.
+
+# Let's make a simple message class called StringMessage
+# that will convey a string with a timestamp.
+
+class StringMessage(RNS.MessageBase):
+    # The MSGTYPE class variable needs to be assigned a
+    # 2 byte integer value. This identifier allows the
+    # channel to look up your message's constructor when a
+    # message arrives over the channel.
+    #
+    # MSGTYPE must be unique across all message types we
+    # register with the channel. MSGTYPEs >= 0xf000 are
+    # reserved for the system.
+    MSGTYPE = 0x0101
+
+    # The constructor of our object must be callable with
+    # no arguments. We can have parameters, but they must
+    # have a default assignment.
+    #
+    # This is needed so the channel can create an empty
+    # version of our message into which the incoming
+    # message can be unpacked.
+    def __init__(self, data=None):
+        self.data = data
+        self.timestamp = datetime.now()
+
+    # Finally, our message needs to implement functions
+    # the channel can call to pack and unpack our message
+    # to/from the raw packet payload. We'll use the
+    # umsgpack package bundled with RNS. We could also use
+    # the struct package bundled with Python if we wanted
+    # more control over the structure of the packed bytes.
+    #
+    # Also note that packed message objects must fit
+    # entirely in one packet. The number of bytes
+    # available for message payloads can be queried from
+    # the channel using the Channel.MDU property. The
+    # channel MDU is slightly less than the link MDU due
+    # to encoding the message header.
+
+    # The pack function encodes the message contents into
+    # a byte stream.
+    def pack(self) -> bytes:
+        return umsgpack.packb((self.data, self.timestamp))
+
+    # And the unpack function decodes a byte stream into
+    # the message contents.
+    def unpack(self, raw):
+        self.data, self.timestamp = umsgpack.unpackb(raw)
+
+
+##########################################################
+#### Server Part #########################################
+##########################################################
+
+# A reference to the latest client link that connected
+latest_client_link = None
+
+# This initialisation is executed when the users chooses
+# to run as a server
+def server(configpath):
+    # We must first initialise Reticulum
+    reticulum = RNS.Reticulum(configpath)
+    
+    # Randomly create a new identity for our link example
+    server_identity = RNS.Identity()
+
+    # We create a destination that clients can connect to. We
+    # want clients to create links to this destination, so we
+    # need to create a "single" destination type.
+    server_destination = RNS.Destination(
+        server_identity,
+        RNS.Destination.IN,
+        RNS.Destination.SINGLE,
+        APP_NAME,
+        "channelexample"
+    )
+
+    # We configure a function that will get called every time
+    # a new client creates a link to this destination.
+    server_destination.set_link_established_callback(client_connected)
+
+    # Everything's ready!
+    # Let's Wait for client requests or user input
+    server_loop(server_destination)
+
+def server_loop(destination):
+    # Let the user know that everything is ready
+    RNS.log(
+        "Link example "+
+        RNS.prettyhexrep(destination.hash)+
+        " running, waiting for a connection."
+    )
+
+    RNS.log("Hit enter to manually send an announce (Ctrl-C to quit)")
+
+    # We enter a loop that runs until the users exits.
+    # If the user hits enter, we will announce our server
+    # destination on the network, which will let clients
+    # know how to create messages directed towards it.
+    while True:
+        entered = input()
+        destination.announce()
+        RNS.log("Sent announce from "+RNS.prettyhexrep(destination.hash))
+
+# When a client establishes a link to our server
+# destination, this function will be called with
+# a reference to the link.
+def client_connected(link):
+    global latest_client_link
+    latest_client_link = link
+
+    RNS.log("Client connected")
+    link.set_link_closed_callback(client_disconnected)
+
+    # Register message types and add callback to channel
+    channel = link.get_channel()
+    channel.register_message_type(StringMessage)
+    channel.add_message_handler(server_message_received)
+
+def client_disconnected(link):
+    RNS.log("Client disconnected")
+
+def server_message_received(message):
+    """
+    A message handler
+    @param message: An instance of a subclass of MessageBase
+    @return: True if message was handled
+    """
+    global latest_client_link
+    # When a message is received over any active link,
+    # the replies will all be directed to the last client
+    # that connected.
+
+    # In a message handler, any deserializable message
+    # that arrives over the link's channel will be passed
+    # to all message handlers, unless a preceding handler indicates it
+    # has handled the message.
+    #
+    #
+    if isinstance(message, StringMessage):
+        RNS.log("Received data on the link: " + message.data + " (message created at " + str(message.timestamp) + ")")
+
+        reply_message = StringMessage("I received \""+message.data+"\" over the link")
+        latest_client_link.get_channel().send(reply_message)
+
+        # Incoming messages are sent to each message
+        # handler added to the channel, in the order they
+        # were added.
+        # If any message handler returns True, the message
+        # is considered handled and any subsequent
+        # handlers are skipped.
+        return True
+
+
+##########################################################
+#### Client Part #########################################
+##########################################################
+
+# A reference to the server link
+server_link = None
+
+# This initialisation is executed when the users chooses
+# to run as a client
+def client(destination_hexhash, configpath):
+    # We need a binary representation of the destination
+    # hash that was entered on the command line
+    try:
+        dest_len = (RNS.Reticulum.TRUNCATED_HASHLENGTH//8)*2
+        if len(destination_hexhash) != dest_len:
+            raise ValueError(
+                "Destination length is invalid, must be {hex} hexadecimal characters ({byte} bytes).".format(hex=dest_len, byte=dest_len//2)
+            )
+            
+        destination_hash = bytes.fromhex(destination_hexhash)
+    except:
+        RNS.log("Invalid destination entered. Check your input!\n")
+        exit()
+
+    # We must first initialise Reticulum
+    reticulum = RNS.Reticulum(configpath)
+
+    # Check if we know a path to the destination
+    if not RNS.Transport.has_path(destination_hash):
+        RNS.log("Destination is not yet known. Requesting path and waiting for announce to arrive...")
+        RNS.Transport.request_path(destination_hash)
+        while not RNS.Transport.has_path(destination_hash):
+            time.sleep(0.1)
+
+    # Recall the server identity
+    server_identity = RNS.Identity.recall(destination_hash)
+
+    # Inform the user that we'll begin connecting
+    RNS.log("Establishing link with server...")
+
+    # When the server identity is known, we set
+    # up a destination
+    server_destination = RNS.Destination(
+        server_identity,
+        RNS.Destination.OUT,
+        RNS.Destination.SINGLE,
+        APP_NAME,
+        "channelexample"
+    )
+
+    # And create a link
+    link = RNS.Link(server_destination)
+
+    # We'll also set up functions to inform the
+    # user when the link is established or closed
+    link.set_link_established_callback(link_established)
+    link.set_link_closed_callback(link_closed)
+
+    # Everything is set up, so let's enter a loop
+    # for the user to interact with the example
+    client_loop()
+
+def client_loop():
+    global server_link
+
+    # Wait for the link to become active
+    while not server_link:
+        time.sleep(0.1)
+
+    should_quit = False
+    while not should_quit:
+        try:
+            print("> ", end=" ")
+            text = input()
+
+            # Check if we should quit the example
+            if text == "quit" or text == "q" or text == "exit":
+                should_quit = True
+                server_link.teardown()
+
+            # If not, send the entered text over the link
+            if text != "":
+                message = StringMessage(text)
+                packed_size = len(message.pack())
+                channel = server_link.get_channel()
+                if channel.is_ready_to_send():
+                    if packed_size <= channel.MDU:
+                        channel.send(message)
+                    else:
+                        RNS.log(
+                            "Cannot send this packet, the data size of "+
+                            str(packed_size)+" bytes exceeds the link packet MDU of "+
+                            str(channel.MDU)+" bytes",
+                            RNS.LOG_ERROR
+                        )
+                else:
+                    RNS.log("Channel is not ready to send, please wait for " +
+                            "pending messages to complete.", RNS.LOG_ERROR)
+
+        except Exception as e:
+            RNS.log("Error while sending data over the link: "+str(e))
+            should_quit = True
+            server_link.teardown()
+
+# This function is called when a link
+# has been established with the server
+def link_established(link):
+    # We store a reference to the link
+    # instance for later use
+    global server_link
+    server_link = link
+
+    # Register messages and add handler to channel
+    channel = link.get_channel()
+    channel.register_message_type(StringMessage)
+    channel.add_message_handler(client_message_received)
+
+    # Inform the user that the server is
+    # connected
+    RNS.log("Link established with server, enter some text to send, or \"quit\" to quit")
+
+# When a link is closed, we'll inform the
+# user, and exit the program
+def link_closed(link):
+    if link.teardown_reason == RNS.Link.TIMEOUT:
+        RNS.log("The link timed out, exiting now")
+    elif link.teardown_reason == RNS.Link.DESTINATION_CLOSED:
+        RNS.log("The link was closed by the server, exiting now")
+    else:
+        RNS.log("Link closed, exiting now")
+    
+    RNS.Reticulum.exit_handler()
+    time.sleep(1.5)
+    os._exit(0)
+
+# When a packet is received over the channel, we
+# simply print out the data.
+def client_message_received(message):
+    if isinstance(message, StringMessage):
+        RNS.log("Received data on the link: " + message.data + " (message created at " + str(message.timestamp) + ")")
+        print("> ", end=" ")
+        sys.stdout.flush()
+
+
+##########################################################
+#### Program Startup #####################################
+##########################################################
+
+# This part of the program runs at startup,
+# and parses input of from the user, and then
+# starts up the desired program mode.
+if __name__ == "__main__":
+    try:
+        parser = argparse.ArgumentParser(description="Simple channel example")
+
+        parser.add_argument(
+            "-s",
+            "--server",
+            action="store_true",
+            help="wait for incoming link requests from clients"
+        )
+
+        parser.add_argument(
+            "--config",
+            action="store",
+            default=None,
+            help="path to alternative Reticulum config directory",
+            type=str
+        )
+
+        parser.add_argument(
+            "destination",
+            nargs="?",
+            default=None,
+            help="hexadecimal hash of the server destination",
+            type=str
+        )
+
+        args = parser.parse_args()
+
+        if args.config:
+            configarg = args.config
+        else:
+            configarg = None
+
+        if args.server:
+            server(configarg)
+        else:
+            if (args.destination == None):
+                print("")
+                parser.print_help()
+                print("")
+            else:
+                client(args.destination, configarg)
+
+    except KeyboardInterrupt:
+        print("")
+        exit()
+
+
+

This example can also be found at https://github.com/markqvist/Reticulum/blob/master/Examples/Channel.py.

+
+
+

Buffer#

+

The Buffer example explores using buffered readers and writers to send +binary data between peers of a Link.

+
##########################################################
+# This RNS example demonstrates how to set up a link to  #
+# a destination, and pass binary data over it using a    #
+# channel buffer.                                        #
+##########################################################
+from __future__ import annotations
+import os
+import sys
+import time
+import argparse
+from datetime import datetime
+
+import RNS
+from RNS.vendor import umsgpack
+
+# Let's define an app name. We'll use this for all
+# destinations we create. Since this echo example
+# is part of a range of example utilities, we'll put
+# them all within the app namespace "example_utilities"
+APP_NAME = "example_utilities"
+
+
+##########################################################
+#### Server Part #########################################
+##########################################################
+
+# A reference to the latest client link that connected
+latest_client_link = None
+
+# A reference to the latest buffer object
+latest_buffer = None
+
+# This initialisation is executed when the users chooses
+# to run as a server
+def server(configpath):
+    # We must first initialise Reticulum
+    reticulum = RNS.Reticulum(configpath)
+    
+    # Randomly create a new identity for our example
+    server_identity = RNS.Identity()
+
+    # We create a destination that clients can connect to. We
+    # want clients to create links to this destination, so we
+    # need to create a "single" destination type.
+    server_destination = RNS.Destination(
+        server_identity,
+        RNS.Destination.IN,
+        RNS.Destination.SINGLE,
+        APP_NAME,
+        "bufferexample"
+    )
+
+    # We configure a function that will get called every time
+    # a new client creates a link to this destination.
+    server_destination.set_link_established_callback(client_connected)
+
+    # Everything's ready!
+    # Let's Wait for client requests or user input
+    server_loop(server_destination)
+
+def server_loop(destination):
+    # Let the user know that everything is ready
+    RNS.log(
+        "Link buffer example "+
+        RNS.prettyhexrep(destination.hash)+
+        " running, waiting for a connection."
+    )
+
+    RNS.log("Hit enter to manually send an announce (Ctrl-C to quit)")
+
+    # We enter a loop that runs until the users exits.
+    # If the user hits enter, we will announce our server
+    # destination on the network, which will let clients
+    # know how to create messages directed towards it.
+    while True:
+        entered = input()
+        destination.announce()
+        RNS.log("Sent announce from "+RNS.prettyhexrep(destination.hash))
+
+# When a client establishes a link to our server
+# destination, this function will be called with
+# a reference to the link.
+def client_connected(link):
+    global latest_client_link, latest_buffer
+    latest_client_link = link
+
+    RNS.log("Client connected")
+    link.set_link_closed_callback(client_disconnected)
+
+    # If a new connection is received, the old reader
+    # needs to be disconnected.
+    if latest_buffer:
+        latest_buffer.close()
+
+
+    # Create buffer objects.
+    #   The stream_id parameter to these functions is
+    #   a bit like a file descriptor, except that it
+    #   is unique to the *receiver*.
+    #
+    #   In this example, both the reader and the writer
+    #   use stream_id = 0, but there are actually two
+    #   separate unidirectional streams flowing in
+    #   opposite directions.
+    #
+    channel = link.get_channel()
+    latest_buffer = RNS.Buffer.create_bidirectional_buffer(0, 0, channel, server_buffer_ready)
+
+def client_disconnected(link):
+    RNS.log("Client disconnected")
+
+def server_buffer_ready(ready_bytes: int):
+    """
+    Callback from buffer when buffer has data available
+
+    :param ready_bytes: The number of bytes ready to read
+    """
+    global latest_buffer
+
+    data = latest_buffer.read(ready_bytes)
+    data = data.decode("utf-8")
+
+    RNS.log("Received data over the buffer: " + data)
+
+    reply_message = "I received \""+data+"\" over the buffer"
+    reply_message = reply_message.encode("utf-8")
+    latest_buffer.write(reply_message)
+    latest_buffer.flush()
+
+
+
+
+##########################################################
+#### Client Part #########################################
+##########################################################
+
+# A reference to the server link
+server_link = None
+
+# A reference to the buffer object, needed to share the
+# object from the link connected callback to the client
+# loop.
+buffer = None
+
+# This initialisation is executed when the users chooses
+# to run as a client
+def client(destination_hexhash, configpath):
+    # We need a binary representation of the destination
+    # hash that was entered on the command line
+    try:
+        dest_len = (RNS.Reticulum.TRUNCATED_HASHLENGTH//8)*2
+        if len(destination_hexhash) != dest_len:
+            raise ValueError(
+                "Destination length is invalid, must be {hex} hexadecimal characters ({byte} bytes).".format(hex=dest_len, byte=dest_len//2)
+            )
+            
+        destination_hash = bytes.fromhex(destination_hexhash)
+    except:
+        RNS.log("Invalid destination entered. Check your input!\n")
+        exit()
+
+    # We must first initialise Reticulum
+    reticulum = RNS.Reticulum(configpath)
+
+    # Check if we know a path to the destination
+    if not RNS.Transport.has_path(destination_hash):
+        RNS.log("Destination is not yet known. Requesting path and waiting for announce to arrive...")
+        RNS.Transport.request_path(destination_hash)
+        while not RNS.Transport.has_path(destination_hash):
+            time.sleep(0.1)
+
+    # Recall the server identity
+    server_identity = RNS.Identity.recall(destination_hash)
+
+    # Inform the user that we'll begin connecting
+    RNS.log("Establishing link with server...")
+
+    # When the server identity is known, we set
+    # up a destination
+    server_destination = RNS.Destination(
+        server_identity,
+        RNS.Destination.OUT,
+        RNS.Destination.SINGLE,
+        APP_NAME,
+        "bufferexample"
+    )
+
+    # And create a link
+    link = RNS.Link(server_destination)
+
+    # We'll also set up functions to inform the
+    # user when the link is established or closed
+    link.set_link_established_callback(link_established)
+    link.set_link_closed_callback(link_closed)
+
+    # Everything is set up, so let's enter a loop
+    # for the user to interact with the example
+    client_loop()
+
+def client_loop():
+    global server_link
+
+    # Wait for the link to become active
+    while not server_link:
+        time.sleep(0.1)
+
+    should_quit = False
+    while not should_quit:
+        try:
+            print("> ", end=" ")
+            text = input()
+
+            # Check if we should quit the example
+            if text == "quit" or text == "q" or text == "exit":
+                should_quit = True
+                server_link.teardown()
+            else:
+                # Otherwise, encode the text and write it to the buffer.
+                text = text.encode("utf-8")
+                buffer.write(text)
+                # Flush the buffer to force the data to be sent.
+                buffer.flush()
+
+
+        except Exception as e:
+            RNS.log("Error while sending data over the link buffer: "+str(e))
+            should_quit = True
+            server_link.teardown()
+
+# This function is called when a link
+# has been established with the server
+def link_established(link):
+    # We store a reference to the link
+    # instance for later use
+    global server_link, buffer
+    server_link = link
+
+    # Create buffer, see server_client_connected() for
+    # more detail about setting up the buffer.
+    channel = link.get_channel()
+    buffer = RNS.Buffer.create_bidirectional_buffer(0, 0, channel, client_buffer_ready)
+
+    # Inform the user that the server is
+    # connected
+    RNS.log("Link established with server, enter some text to send, or \"quit\" to quit")
+
+# When a link is closed, we'll inform the
+# user, and exit the program
+def link_closed(link):
+    if link.teardown_reason == RNS.Link.TIMEOUT:
+        RNS.log("The link timed out, exiting now")
+    elif link.teardown_reason == RNS.Link.DESTINATION_CLOSED:
+        RNS.log("The link was closed by the server, exiting now")
+    else:
+        RNS.log("Link closed, exiting now")
+    
+    RNS.Reticulum.exit_handler()
+    time.sleep(1.5)
+    os._exit(0)
+
+# When the buffer has new data, read it and write it to the terminal.
+def client_buffer_ready(ready_bytes: int):
+    global buffer
+    data = buffer.read(ready_bytes)
+    RNS.log("Received data over the link buffer: " + data.decode("utf-8"))
+    print("> ", end=" ")
+    sys.stdout.flush()
+
+
+##########################################################
+#### Program Startup #####################################
+##########################################################
+
+# This part of the program runs at startup,
+# and parses input of from the user, and then
+# starts up the desired program mode.
+if __name__ == "__main__":
+    try:
+        parser = argparse.ArgumentParser(description="Simple buffer example")
+
+        parser.add_argument(
+            "-s",
+            "--server",
+            action="store_true",
+            help="wait for incoming link requests from clients"
+        )
+
+        parser.add_argument(
+            "--config",
+            action="store",
+            default=None,
+            help="path to alternative Reticulum config directory",
+            type=str
+        )
+
+        parser.add_argument(
+            "destination",
+            nargs="?",
+            default=None,
+            help="hexadecimal hash of the server destination",
+            type=str
+        )
+
+        args = parser.parse_args()
+
+        if args.config:
+            configarg = args.config
+        else:
+            configarg = None
+
+        if args.server:
+            server(configarg)
+        else:
+            if (args.destination == None):
+                print("")
+                parser.print_help()
+                print("")
+            else:
+                client(args.destination, configarg)
+
+    except KeyboardInterrupt:
+        print("")
+        exit()
+
+
+

This example can also be found at https://github.com/markqvist/Reticulum/blob/master/Examples/Buffer.py.

+
+
+

Filetransfer#

+

The Filetransfer example implements a basic file-server program that +allow clients to connect and download files. The program uses the Resource +interface to efficiently pass files of any size over a Reticulum Link.

+
##########################################################
+# This RNS example demonstrates a simple filetransfer    #
+# server and client program. The server will serve a     #
+# directory of files, and the clients can list and       #
+# download files from the server.                        #
+#                                                        #
+# Please note that using RNS Resources for large file    #
+# transfers is not recommended, since compression,       #
+# encryption and hashmap sequencing can take a long time #
+# on systems with slow CPUs, which will probably result  #
+# in the client timing out before the resource sender    #
+# can complete preparing the resource.                   #
+#                                                        #
+# If you need to transfer large files, use the Bundle    #
+# class instead, which will automatically slice the data #
+# into chunks suitable for packing as a Resource.        #
+##########################################################
+
+import os
+import sys
+import time
+import threading
+import argparse
+import RNS
+import RNS.vendor.umsgpack as umsgpack
+
+# Let's define an app name. We'll use this for all
+# destinations we create. Since this echo example
+# is part of a range of example utilities, we'll put
+# them all within the app namespace "example_utilities"
+APP_NAME = "example_utilities"
+
+# We'll also define a default timeout, in seconds
+APP_TIMEOUT = 45.0
+
+##########################################################
+#### Server Part #########################################
+##########################################################
+
+serve_path = None
+
+# This initialisation is executed when the users chooses
+# to run as a server
+def server(configpath, path):
+    # We must first initialise Reticulum
+    reticulum = RNS.Reticulum(configpath)
+    
+    # Randomly create a new identity for our file server
+    server_identity = RNS.Identity()
+
+    global serve_path
+    serve_path = path
+
+    # We create a destination that clients can connect to. We
+    # want clients to create links to this destination, so we
+    # need to create a "single" destination type.
+    server_destination = RNS.Destination(
+        server_identity,
+        RNS.Destination.IN,
+        RNS.Destination.SINGLE,
+        APP_NAME,
+        "filetransfer",
+        "server"
+    )
+
+    # We configure a function that will get called every time
+    # a new client creates a link to this destination.
+    server_destination.set_link_established_callback(client_connected)
+
+    # Everything's ready!
+    # Let's Wait for client requests or user input
+    announceLoop(server_destination)
+
+def announceLoop(destination):
+    # Let the user know that everything is ready
+    RNS.log("File server "+RNS.prettyhexrep(destination.hash)+" running")
+    RNS.log("Hit enter to manually send an announce (Ctrl-C to quit)")
+
+    # We enter a loop that runs until the users exits.
+    # If the user hits enter, we will announce our server
+    # destination on the network, which will let clients
+    # know how to create messages directed towards it.
+    while True:
+        entered = input()
+        destination.announce()
+        RNS.log("Sent announce from "+RNS.prettyhexrep(destination.hash))
+
+# Here's a convenience function for listing all files
+# in our served directory
+def list_files():
+    # We add all entries from the directory that are
+    # actual files, and does not start with "."
+    global serve_path
+    return [file for file in os.listdir(serve_path) if os.path.isfile(os.path.join(serve_path, file)) and file[:1] != "."]
+
+# When a client establishes a link to our server
+# destination, this function will be called with
+# a reference to the link. We then send the client
+# a list of files hosted on the server.
+def client_connected(link):
+    # Check if the served directory still exists
+    if os.path.isdir(serve_path):
+        RNS.log("Client connected, sending file list...")
+
+        link.set_link_closed_callback(client_disconnected)
+
+        # We pack a list of files for sending in a packet
+        data = umsgpack.packb(list_files())
+
+        # Check the size of the packed data
+        if len(data) <= RNS.Link.MDU:
+            # If it fits in one packet, we will just
+            # send it as a single packet over the link.
+            list_packet = RNS.Packet(link, data)
+            list_receipt = list_packet.send()
+            list_receipt.set_timeout(APP_TIMEOUT)
+            list_receipt.set_delivery_callback(list_delivered)
+            list_receipt.set_timeout_callback(list_timeout)
+        else:
+            RNS.log("Too many files in served directory!", RNS.LOG_ERROR)
+            RNS.log("You should implement a function to split the filelist over multiple packets.", RNS.LOG_ERROR)
+            RNS.log("Hint: The client already supports it :)", RNS.LOG_ERROR)
+            
+        # After this, we're just going to keep the link
+        # open until the client requests a file. We'll
+        # configure a function that get's called when
+        # the client sends a packet with a file request.
+        link.set_packet_callback(client_request)
+    else:
+        RNS.log("Client connected, but served path no longer exists!", RNS.LOG_ERROR)
+        link.teardown()
+
+def client_disconnected(link):
+    RNS.log("Client disconnected")
+
+def client_request(message, packet):
+    global serve_path
+
+    try:
+        filename = message.decode("utf-8")
+    except Exception as e:
+        filename = None
+
+    if filename in list_files():
+        try:
+            # If we have the requested file, we'll
+            # read it and pack it as a resource
+            RNS.log("Client requested \""+filename+"\"")
+            file = open(os.path.join(serve_path, filename), "rb")
+            
+            file_resource = RNS.Resource(
+                file,
+                packet.link,
+                callback=resource_sending_concluded
+            )
+
+            file_resource.filename = filename
+        except Exception as e:
+            # If somethign went wrong, we close
+            # the link
+            RNS.log("Error while reading file \""+filename+"\"", RNS.LOG_ERROR)
+            packet.link.teardown()
+            raise e
+    else:
+        # If we don't have it, we close the link
+        RNS.log("Client requested an unknown file")
+        packet.link.teardown()
+
+# This function is called on the server when a
+# resource transfer concludes.
+def resource_sending_concluded(resource):
+    if hasattr(resource, "filename"):
+        name = resource.filename
+    else:
+        name = "resource"
+
+    if resource.status == RNS.Resource.COMPLETE:
+        RNS.log("Done sending \""+name+"\" to client")
+    elif resource.status == RNS.Resource.FAILED:
+        RNS.log("Sending \""+name+"\" to client failed")
+
+def list_delivered(receipt):
+    RNS.log("The file list was received by the client")
+
+def list_timeout(receipt):
+    RNS.log("Sending list to client timed out, closing this link")
+    link = receipt.destination
+    link.teardown()
+
+##########################################################
+#### Client Part #########################################
+##########################################################
+
+# We store a global list of files available on the server
+server_files      = []
+
+# A reference to the server link
+server_link       = None
+
+# And a reference to the current download
+current_download  = None
+current_filename  = None
+
+# Variables to store download statistics
+download_started  = 0
+download_finished = 0
+download_time     = 0
+transfer_size     = 0
+file_size         = 0
+
+
+# This initialisation is executed when the users chooses
+# to run as a client
+def client(destination_hexhash, configpath):
+    # We need a binary representation of the destination
+    # hash that was entered on the command line
+    try:
+        dest_len = (RNS.Reticulum.TRUNCATED_HASHLENGTH//8)*2
+        if len(destination_hexhash) != dest_len:
+            raise ValueError(
+                "Destination length is invalid, must be {hex} hexadecimal characters ({byte} bytes).".format(hex=dest_len, byte=dest_len//2)
+            )
+            
+        destination_hash = bytes.fromhex(destination_hexhash)
+    except:
+        RNS.log("Invalid destination entered. Check your input!\n")
+        exit()
+
+    # We must first initialise Reticulum
+    reticulum = RNS.Reticulum(configpath)
+
+
+    # Check if we know a path to the destination
+    if not RNS.Transport.has_path(destination_hash):
+        RNS.log("Destination is not yet known. Requesting path and waiting for announce to arrive...")
+        RNS.Transport.request_path(destination_hash)
+        while not RNS.Transport.has_path(destination_hash):
+            time.sleep(0.1)
+
+    # Recall the server identity
+    server_identity = RNS.Identity.recall(destination_hash)
+
+    # Inform the user that we'll begin connecting
+    RNS.log("Establishing link with server...")
+
+    # When the server identity is known, we set
+    # up a destination
+    server_destination = RNS.Destination(
+        server_identity,
+        RNS.Destination.OUT,
+        RNS.Destination.SINGLE,
+        APP_NAME,
+        "filetransfer",
+        "server"
+    )
+
+    # We also want to automatically prove incoming packets
+    server_destination.set_proof_strategy(RNS.Destination.PROVE_ALL)
+
+    # And create a link
+    link = RNS.Link(server_destination)
+
+    # We expect any normal data packets on the link
+    # to contain a list of served files, so we set
+    # a callback accordingly
+    link.set_packet_callback(filelist_received)
+
+    # We'll also set up functions to inform the
+    # user when the link is established or closed
+    link.set_link_established_callback(link_established)
+    link.set_link_closed_callback(link_closed)
+
+    # And set the link to automatically begin
+    # downloading advertised resources
+    link.set_resource_strategy(RNS.Link.ACCEPT_ALL)
+    link.set_resource_started_callback(download_began)
+    link.set_resource_concluded_callback(download_concluded)
+
+    menu()
+
+# Requests the specified file from the server
+def download(filename):
+    global server_link, menu_mode, current_filename, transfer_size, download_started
+    current_filename = filename
+    download_started = 0
+    transfer_size    = 0
+
+    # We just create a packet containing the
+    # requested filename, and send it down the
+    # link. We also specify we don't need a
+    # packet receipt.
+    request_packet = RNS.Packet(server_link, filename.encode("utf-8"), create_receipt=False)
+    request_packet.send()
+    
+    print("")
+    print(("Requested \""+filename+"\" from server, waiting for download to begin..."))
+    menu_mode = "download_started"
+
+# This function runs a simple menu for the user
+# to select which files to download, or quit
+menu_mode = None
+def menu():
+    global server_files, server_link
+    # Wait until we have a filelist
+    while len(server_files) == 0:
+        time.sleep(0.1)
+    RNS.log("Ready!")
+    time.sleep(0.5)
+
+    global menu_mode
+    menu_mode = "main"
+    should_quit = False
+    while (not should_quit):
+        print_menu()
+
+        while not menu_mode == "main":
+            # Wait
+            time.sleep(0.25)
+
+        user_input = input()
+        if user_input == "q" or user_input == "quit" or user_input == "exit":
+            should_quit = True
+            print("")
+        else:
+            if user_input in server_files:
+                download(user_input)
+            else:
+                try:
+                    if 0 <= int(user_input) < len(server_files):
+                        download(server_files[int(user_input)])
+                except:
+                    pass
+
+    if should_quit:
+        server_link.teardown()
+
+# Prints out menus or screens for the
+# various states of the client program.
+# It's simple and quite uninteresting.
+# I won't go into detail here. Just
+# strings basically.
+def print_menu():
+    global menu_mode, download_time, download_started, download_finished, transfer_size, file_size
+
+    if menu_mode == "main":
+        clear_screen()
+        print_filelist()
+        print("")
+        print("Select a file to download by entering name or number, or q to quit")
+        print(("> "), end=' ')
+    elif menu_mode == "download_started":
+        download_began = time.time()
+        while menu_mode == "download_started":
+            time.sleep(0.1)
+            if time.time() > download_began+APP_TIMEOUT:
+                print("The download timed out")
+                time.sleep(1)
+                server_link.teardown()
+
+    if menu_mode == "downloading":
+        print("Download started")
+        print("")
+        while menu_mode == "downloading":
+            global current_download
+            percent = round(current_download.get_progress() * 100.0, 1)
+            print(("\rProgress: "+str(percent)+" %   "), end=' ')
+            sys.stdout.flush()
+            time.sleep(0.1)
+
+    if menu_mode == "save_error":
+        print(("\rProgress: 100.0 %"), end=' ')
+        sys.stdout.flush()
+        print("")
+        print("Could not write downloaded file to disk")
+        current_download.status = RNS.Resource.FAILED
+        menu_mode = "download_concluded"
+
+    if menu_mode == "download_concluded":
+        if current_download.status == RNS.Resource.COMPLETE:
+            print(("\rProgress: 100.0 %"), end=' ')
+            sys.stdout.flush()
+
+            # Print statistics
+            hours, rem = divmod(download_time, 3600)
+            minutes, seconds = divmod(rem, 60)
+            timestring = "{:0>2}:{:0>2}:{:05.2f}".format(int(hours),int(minutes),seconds)
+            print("")
+            print("")
+            print("--- Statistics -----")
+            print("\tTime taken       : "+timestring)
+            print("\tFile size        : "+size_str(file_size))
+            print("\tData transferred : "+size_str(transfer_size))
+            print("\tEffective rate   : "+size_str(file_size/download_time, suffix='b')+"/s")
+            print("\tTransfer rate    : "+size_str(transfer_size/download_time, suffix='b')+"/s")
+            print("")
+            print("The download completed! Press enter to return to the menu.")
+            print("")
+            input()
+
+        else:
+            print("")
+            print("The download failed! Press enter to return to the menu.")
+            input()
+
+        current_download = None
+        menu_mode = "main"
+        print_menu()
+
+# This function prints out a list of files
+# on the connected server.
+def print_filelist():
+    global server_files
+    print("Files on server:")
+    for index,file in enumerate(server_files):
+        print("\t("+str(index)+")\t"+file)
+
+def filelist_received(filelist_data, packet):
+    global server_files, menu_mode
+    try:
+        # Unpack the list and extend our
+        # local list of available files
+        filelist = umsgpack.unpackb(filelist_data)
+        for file in filelist:
+            if not file in server_files:
+                server_files.append(file)
+
+        # If the menu is already visible,
+        # we'll update it with what was
+        # just received
+        if menu_mode == "main":
+            print_menu()
+    except:
+        RNS.log("Invalid file list data received, closing link")
+        packet.link.teardown()
+
+# This function is called when a link
+# has been established with the server
+def link_established(link):
+    # We store a reference to the link
+    # instance for later use
+    global server_link
+    server_link = link
+
+    # Inform the user that the server is
+    # connected
+    RNS.log("Link established with server")
+    RNS.log("Waiting for filelist...")
+
+    # And set up a small job to check for
+    # a potential timeout in receiving the
+    # file list
+    thread = threading.Thread(target=filelist_timeout_job)
+    thread.setDaemon(True)
+    thread.start()
+
+# This job just sleeps for the specified
+# time, and then checks if the file list
+# was received. If not, the program will
+# exit.
+def filelist_timeout_job():
+    time.sleep(APP_TIMEOUT)
+
+    global server_files
+    if len(server_files) == 0:
+        RNS.log("Timed out waiting for filelist, exiting")
+        os._exit(0)
+
+
+# When a link is closed, we'll inform the
+# user, and exit the program
+def link_closed(link):
+    if link.teardown_reason == RNS.Link.TIMEOUT:
+        RNS.log("The link timed out, exiting now")
+    elif link.teardown_reason == RNS.Link.DESTINATION_CLOSED:
+        RNS.log("The link was closed by the server, exiting now")
+    else:
+        RNS.log("Link closed, exiting now")
+    
+    RNS.Reticulum.exit_handler()
+    time.sleep(1.5)
+    os._exit(0)
+
+# When RNS detects that the download has
+# started, we'll update our menu state
+# so the user can be shown a progress of
+# the download.
+def download_began(resource):
+    global menu_mode, current_download, download_started, transfer_size, file_size
+    current_download = resource
+    
+    if download_started == 0:
+        download_started = time.time()
+    
+    transfer_size += resource.size
+    file_size = resource.total_size
+    
+    menu_mode = "downloading"
+
+# When the download concludes, successfully
+# or not, we'll update our menu state and 
+# inform the user about how it all went.
+def download_concluded(resource):
+    global menu_mode, current_filename, download_started, download_finished, download_time
+    download_finished = time.time()
+    download_time = download_finished - download_started
+
+    saved_filename = current_filename
+
+    if resource.status == RNS.Resource.COMPLETE:
+        counter = 0
+        while os.path.isfile(saved_filename):
+            counter += 1
+            saved_filename = current_filename+"."+str(counter)
+
+        try:
+            file = open(saved_filename, "wb")
+            file.write(resource.data.read())
+            file.close()
+            menu_mode = "download_concluded"
+        except:
+            menu_mode = "save_error"
+    else:
+        menu_mode = "download_concluded"
+
+# A convenience function for printing a human-
+# readable file size
+def size_str(num, suffix='B'):
+    units = ['','Ki','Mi','Gi','Ti','Pi','Ei','Zi']
+    last_unit = 'Yi'
+
+    if suffix == 'b':
+        num *= 8
+        units = ['','K','M','G','T','P','E','Z']
+        last_unit = 'Y'
+
+    for unit in units:
+        if abs(num) < 1024.0:
+            return "%3.2f %s%s" % (num, unit, suffix)
+        num /= 1024.0
+    return "%.2f %s%s" % (num, last_unit, suffix)
+
+# A convenience function for clearing the screen
+def clear_screen():
+    os.system('cls' if os.name=='nt' else 'clear')
+
+##########################################################
+#### Program Startup #####################################
+##########################################################
+
+# This part of the program runs at startup,
+# and parses input of from the user, and then
+# starts up the desired program mode.
+if __name__ == "__main__":
+    try:
+        parser = argparse.ArgumentParser(
+            description="Simple file transfer server and client utility"
+        )
+
+        parser.add_argument(
+            "-s",
+            "--serve",
+            action="store",
+            metavar="dir",
+            help="serve a directory of files to clients"
+        )
+
+        parser.add_argument(
+            "--config",
+            action="store",
+            default=None,
+            help="path to alternative Reticulum config directory",
+            type=str
+        )
+
+        parser.add_argument(
+            "destination",
+            nargs="?",
+            default=None,
+            help="hexadecimal hash of the server destination",
+            type=str
+        )
+
+        args = parser.parse_args()
+
+        if args.config:
+            configarg = args.config
+        else:
+            configarg = None
+
+        if args.serve:
+            if os.path.isdir(args.serve):
+                server(configarg, args.serve)
+            else:
+                RNS.log("The specified directory does not exist")
+        else:
+            if (args.destination == None):
+                print("")
+                parser.print_help()
+                print("")
+            else:
+                client(args.destination, configarg)
+
+    except KeyboardInterrupt:
+        print("")
+        exit()
+
+
+

This example can also be found at https://github.com/markqvist/Reticulum/blob/master/Examples/Filetransfer.py.

+
+
+ +
+
+ +
+ +
+
+ + + + + + + + + + \ No newline at end of file diff --git a/build/manual/forhumans.html b/build/manual/forhumans.html new file mode 100644 index 0000000..88d989d --- /dev/null +++ b/build/manual/forhumans.html @@ -0,0 +1,270 @@ + + + + + + + + + An Explanation of Reticulum for Human Beings - Reticulum Network Stack 0.5.5 beta documentation + + + + + + + + + + + + + + + + + + Contents + + + + + + Menu + + + + + + + + Expand + + + + + + Light mode + + + + + + + + + + + + + + Dark mode + + + + + + + Auto light/dark mode + + + + + + + + + + + + + + + + + + + +
+
+
+ +
+ +
+
+ +
+ +
+
+ +
+
+
+ + + + + Back to top + +
+
+ +
+ +
+
+
+

An Explanation of Reticulum for Human Beings#

+
+ +
+
+
+ + +
+
+ + Generated with Sphinx and + Furo + +
+
+
+ +
+
+
+ +
+
+ +
+
+ + + + + + + + + + \ No newline at end of file diff --git a/build/manual/genindex.html b/build/manual/genindex.html new file mode 100644 index 0000000..a93d5d6 --- /dev/null +++ b/build/manual/genindex.html @@ -0,0 +1,736 @@ + + + + + + + Index - Reticulum Network Stack 0.5.5 beta documentation + + + + + + + + + + + + + + + + + + Contents + + + + + + Menu + + + + + + + + Expand + + + + + + Light mode + + + + + + + + + + + + + + Dark mode + + + + + + + Auto light/dark mode + + + + + + + + + + + + + + + + + + + +
+
+
+ +
+ +
+
+ +
+ +
+
+ +
+
+
+ + + + + Back to top + +
+
+ +
+ +
+
+ +
+

Index

+
_ | A | B | C | D | E | F | G | H | I | K | L | M | N | P | R | S | T | U | V
+
+
+

_

+ + +
+
+ +
+

A

+ + + +
+
+ +
+

B

+ + +
+
+ +
+

C

+ + + +
+
+ +
+

D

+ + + +
+
+ +
+

E

+ + + +
+
+ +
+

F

+ + + +
+
+ +
+

G

+ + + +
+
+ +
+

H

+ + + +
+
+ +
+

I

+ + + +
+
+ +
+

K

+ + + +
+
+ +
+

L

+ + + +
+
+ +
+

M

+ + + +
+
+ +
+

N

+ + + +
+
+ +
+

P

+ + + +
+
+ +
+

R

+ + + +
+
+ +
+

S

+ + + +
+
+ +
+

T

+ + + +
+
+ +
+

U

+ + +
+
+ +
+

V

+ + +
+
+ + +
+
+
+ + +
+
+ + Generated with Sphinx and + Furo + +
+
+
+ +
+
+
+ +
+
+ +
+
+ + + + + + + + + + \ No newline at end of file diff --git a/build/manual/gettingstartedfast.html b/build/manual/gettingstartedfast.html new file mode 100644 index 0000000..be6f19b --- /dev/null +++ b/build/manual/gettingstartedfast.html @@ -0,0 +1,750 @@ + + + + + + + + + Getting Started Fast - Reticulum Network Stack 0.5.5 beta documentation + + + + + + + + + + + + + + + + + + Contents + + + + + + Menu + + + + + + + + Expand + + + + + + Light mode + + + + + + + + + + + + + + Dark mode + + + + + + + Auto light/dark mode + + + + + + + + + + + + + + + + + + + +
+
+
+ +
+ +
+
+ +
+ +
+
+ +
+
+
+ + + + + Back to top + +
+
+ +
+ +
+
+
+

Getting Started Fast#

+

The best way to get started with the Reticulum Network Stack depends on what +you want to do. This guide will outline sensible starting paths for different +scenarios.

+
+

Standalone Reticulum Installation#

+

If you simply want to install Reticulum and related utilities on a system, +the easiest way is via the pip package manager:

+
pip install rns
+
+
+

If you do not already have pip installed, you can install it using the package manager +of your system with a command like sudo apt install python3-pip, +sudo pamac install python-pip or similar.

+

You can also dowload the Reticulum release wheels from GitHub, or other release channels, +and install them offline using pip:

+
pip install ./rns-0.5.1-py3-none-any.whl
+
+
+
+
+

Resolving Dependency & Installation Issues#

+

On some platforms, there may not be binary packages available for all dependencies, and +pip installation may fail with an error message. In these cases, the issue can usually +be resolved by installing the development essentials packages for your platform:

+
# Debian / Ubuntu / Derivatives
+sudo apt install build-essential
+
+# Arch / Manjaro / Derivatives
+sudo pamac install base-devel
+
+# Fedora
+sudo dnf groupinstall "Development Tools" "Development Libraries"
+
+
+

With the base development packages installed, pip should be able to compile any missing +dependencies from source, and complete installation even on platforms that don’t have pre- +compiled packages available.

+
+
+

Try Using a Reticulum-based Program#

+

If you simply want to try using a program built with Reticulum, a few different +programs exist that allow basic communication and a range of other useful functions, +even over extremely low-bandwidth Reticulum networks.

+

These programs will let you get a feel for how Reticulum works. They have been designed +to run well over networks based on LoRa or packet radio, but can also be used over fast +links, such as local WiFi, wired Ethernet, the Internet, or any combination.

+

As such, it is easy to get started experimenting, without having to set up any radio +transceivers or infrastructure just to try it out. Launching the programs on separate +devices connected to the same WiFi network is enough to get started, and physical +radio interfaces can then be added later.

+
+

Remote Shell#

+

The rnsh program lets you establish fully interactive +remote shell sessions over Reticulum. It also allows you to pipe any program to or from a +remote system, and is similar to how ssh works.

+
+
+

Nomad Network#

+

The terminal-based program Nomad Network +provides a complete encrypted communications suite built with Reticulum. It features +encrypted messaging (both direct and delayed-delivery for offline users), file sharing, +and has a built-in text-browser and page server with support for dynamically rendered pages, +user authentication and more.

+_images/nomadnet_3.png +

Nomad Network is a user-facing client +for the messaging and information-sharing protocol +LXMF, another project built with Reticulum.

+

You can install Nomad Network via pip:

+
# Install ...
+pip install nomadnet
+
+# ... and run
+nomadnet
+
+
+

Please Note: If this is the very first time you use pip to install a program +on your system, you might need to reboot your system for your program to become +available. If you get a “command not found” error or similar when running the +program, reboot your system and try again.

+
+
+

Sideband#

+

If you would rather use a program with a graphical user interface, you can take +a look at Sideband, which is available for Android, +Linux and macOS.

+_images/sideband_devices.webp +

Sideband allows you to communicate with other people or LXMF-compatible +systems over Reticulum networks using LoRa, Packet Radio, WiFi, I2P, Encrypted QR +Paper Messages, or anything else Reticulum supports. It also interoperates with +the Nomad Network program.

+
+
+
+

Using the Included Utilities#

+

Reticulum comes with a range of included utilities that make it easier to +manage your network, check connectivity and make Reticulum available to other +programs on your system.

+

You can use rnsd to run Reticulum as a background or foreground service, +and the rnstatus, rnpath and rnprobe utilities to view and query +network status and connectivity.

+

To learn more about these utility programs, have a look at the +Using Reticulum on Your System chapter of this manual.

+
+
+

Creating a Network With Reticulum#

+

To create a network, you will need to specify one or more interfaces for +Reticulum to use. This is done in the Reticulum configuration file, which by +default is located at ~/.reticulum/config. You can get an example +configuration file with all options via rnsd --exampleconfig.

+

When Reticulum is started for the first time, it will create a default +configuration file, with one active interface. This default interface uses +your existing Ethernet and WiFi networks (if any), and only allows you to +communicate with other Reticulum peers within your local broadcast domains.

+

To communicate further, you will have to add one or more interfaces. The default +configuration includes a number of examples, ranging from using TCP over the +internet, to LoRa and Packet Radio interfaces.

+

With Reticulum, you only need to configure what interfaces you want to communicate +over. There is no need to configure address spaces, subnets, routing tables, +or other things you might be used to from other network types.

+

Once Reticulum knows which interfaces it should use, it will automatically +discover topography and configure transport of data to any destinations it +knows about.

+

In situations where you already have an established WiFi or Ethernet network, and +many devices that want to utilise the same external Reticulum network paths (for example over +LoRa), it will often be sufficient to let one system act as a Reticulum gateway, by +adding any external interfaces to the configuration of this system, and then enabling transport on it. Any +other device on your local WiFi will then be able to connect to this wider Reticulum +network just using the default (AutoInterface) configuration.

+

Possibly, the examples in the config file are enough to get you started. If +you want more information, you can read the Building Networks +and Interfaces chapters of this manual.

+
+
+

Connecting Reticulum Instances Over the Internet#

+

Reticulum currently offers two interfaces suitable for connecting instances over the Internet: TCP +and I2P. Each interface offers a different set of features, and Reticulum +users should carefully choose the interface which best suites their needs.

+

The TCPServerInterface allows users to host an instance accessible over TCP/IP. This +method is generally faster, lower latency, and more energy efficient than using I2PInterface, +however it also leaks more data about the server host.

+

TCP connections reveal the IP address of both your instance and the server to anyone who can +inspect the connection. Someone could use this information to determine your location or identity. Adversaries +inspecting your packets may be able to record packet metadata like time of transmission and packet size. +Even though Reticulum encrypts traffic, TCP does not, so an adversary may be able to use +packet inspection to learn that a system is running Reticulum, and what other IP addresses connect to it. +Hosting a publicly reachable instance over TCP also requires a publicly reachable IP address, +which most Internet connections don’t offer anymore.

+

The I2PInterface routes messages through the Invisible Internet Protocol +(I2P). To use this interface, users must also run an I2P daemon in +parallel to rnsd. For always-on I2P nodes it is recommended to use i2pd.

+

By default, I2P will encrypt and mix all traffic sent over the Internet, and +hide both the sender and receiver Reticulum instance IP addresses. Running an I2P node +will also relay other I2P user’s encrypted packets, which will use extra +bandwidth and compute power, but also makes timing attacks and other forms of +deep-packet-inspection much more difficult.

+

I2P also allows users to host globally available Reticulum instances from non-public IP’s and behind firewalls and NAT.

+

In general it is recommended to use an I2P node if you want to host a publicly accessible +instance, while preserving anonymity. If you care more about performance, and a slightly +easier setup, use TCP.

+
+
+

Connect to the Public Testnet#

+

An experimental public testnet has been made accessible over both I2P and TCP. You can join it +by adding one of the following interfaces to your .reticulum/config file:

+
# TCP/IP interface to the Dublin hub
+[[RNS Testnet Dublin]]
+  type = TCPClientInterface
+  enabled = yes
+  target_host = dublin.connect.reticulum.network
+  target_port = 4965
+
+# TCP/IP interface to the BetweenTheBorders Hub (community-provided)
+[[RNS Testnet BetweenTheBorders]]
+  type = TCPClientInterface
+  enabled = yes
+  target_host = betweentheborders.com
+  target_port = 4242
+
+# Interface to I2P hub A
+[[RNS Testnet I2P Hub A]]
+  type = I2PInterface
+  enabled = yes
+  peers = uxg5kubabakh3jtnvsipingbr5574dle7bubvip7llfvwx2tgrua.b32.i2p
+
+
+

Many other Reticulum instances are connecting to this testnet, and you can also join it +via other entry points if you know them. There is absolutely no control over the network +topography, usage or what types of instances connect. It will also occasionally be used +to test various failure scenarios, and there are no availability or service guarantees.

+
+
+

Adding Radio Interfaces#

+

Once you have Reticulum installed and working, you can add radio interfaces with +any compatible hardware you have available. Reticulum supports a wide range of radio +hardware, and if you already have any available, it is very likely that it will +work with Reticulum. For information on how to configure this, see the +Interfaces section of this manual.

+

If you do not already have transceiver hardware available, you can easily and +cheaply build an RNode, which is a general-purpose long-range +digital radio transceiver, that integrates easily with Reticulum.

+

To build one yourself requires installing a custom firmware on a supported LoRa +development board with an auto-install script. Please see the Communications Hardware +chapter for a guide. If you prefer purchasing a ready-made unit, you can refer to the +list of suppliers. For more information on RNode, you can also +refer to these additional external resources:

+ +

If you have communications hardware that is not already supported by any of the +existing interface types, but you think would be suitable for use with Reticulum, +you are welcome to head over to the GitHub discussion pages +and propose adding an interface for the hardware.

+
+
+

Develop a Program with Reticulum#

+

If you want to develop programs that use Reticulum, the easiest way to get +started is to install the latest release of Reticulum via pip:

+
pip3 install rns
+
+
+

The above command will install Reticulum and dependencies, and you will be +ready to import and use RNS in your own programs. The next step will most +likely be to look at some Example Programs.

+

For extended functionality, you can install optional dependencies:

+
pip3 install pyserial
+
+
+

Further information can be found in the API Reference.

+
+
+

Participate in Reticulum Development#

+

If you want to participate in the development of Reticulum and associated +utilities, you’ll want to get the latest source from GitHub. In that case, +don’t use pip, but try this recipe:

+
# Install dependencies
+pip3 install cryptography pyserial
+
+# Clone repository
+git clone https://github.com/markqvist/Reticulum.git
+
+# Move into Reticulum folder and symlink library to examples folder
+cd Reticulum
+ln -s ../RNS ./Examples/
+
+# Run an example
+python3 Examples/Echo.py -s
+
+# Unless you've manually created a config file, Reticulum will do so now,
+# and immediately exit. Make any necessary changes to the file:
+nano ~/.reticulum/config
+
+# ... and launch the example again.
+python3 Examples/Echo.py -s
+
+# You can now repeat the process on another computer,
+# and run the same example with -h to get command line options.
+python3 Examples/Echo.py -h
+
+# Run the example in client mode to "ping" the server.
+# Replace the hash below with the actual destination hash of your server.
+python3 Examples/Echo.py 174a64852a75682259ad8b921b8bf416
+
+# Have a look at another example
+python3 Examples/Filetransfer.py -h
+
+
+

When you have experimented with the basic examples, it’s time to go read the +Understanding Reticulum chapter. Before submitting +your first pull request, it is probably a good idea to introduce yourself on +the disucssion forum on GitHub, +or ask one of the developers or maintainers for a good place to start.

+
+
+

Platform-Specific Install Notes#

+

Some platforms require a slightly different installation procedure, or have +various quirks that are worth being aware of. These are listed here.

+
+

Android#

+

Reticulum can be used on Android in different ways. The easiest way to get +started is using an app like Sideband.

+

For more control and features, you can use Reticulum and related programs via +the Termux app, at the time of writing available on +F-droid.

+

Termux is a terminal emulator and Linux environment for Android based devices, +which includes the ability to use many different programs and libraries, +including Reticulum.

+

To use Reticulum within the Termux environment, you will need to install +python and the python-cryptography library using pkg, the package-manager +build into Termux. After that, you can use pip to install Reticulum.

+

From within Termux, execute the following:

+
# First, make sure indexes and packages are up to date.
+pkg update
+pkg upgrade
+
+# Then install python and the cryptography library.
+pkg install python python-cryptography
+
+# Make sure pip is up to date, and install the wheel module.
+pip install wheel pip --upgrade
+
+# Install Reticulum
+pip install rns
+
+
+

If for some reason the python-cryptography package is not available for +your platform via the Termux package manager, you can attempt to build it +locally on your device using the following command:

+
# First, make sure indexes and packages are up to date.
+pkg update
+pkg upgrade
+
+# Then install dependencies for the cryptography library.
+pkg install python build-essential openssl libffi rust
+
+# Make sure pip is up to date, and install the wheel module.
+pip install wheel pip --upgrade
+
+# To allow the installer to build the cryptography module,
+# we need to let it know what platform we are compiling for:
+export CARGO_BUILD_TARGET="aarch64-linux-android"
+
+# Start the install process for the cryptography module.
+# Depending on your device, this can take several minutes,
+# since the module must be compiled locally on your device.
+pip install cryptography
+
+# If the above installation succeeds, you can now install
+# Reticulum and any related software
+pip install rns
+
+
+

It is also possible to include Reticulum in apps compiled and distributed as +Android APKs. A detailed tutorial and example source code will be included +here at a later point. Until then you can use the Sideband source code as an example and startig point.

+
+
+

ARM64#

+

On some architectures, including ARM64, not all dependencies have precompiled +binaries. On such systems, you may need to install python3-dev before +installing Reticulum or programs that depend on Reticulum.

+
# Install Python and development packages
+sudo apt update
+sudo apt install python3 python3-pip python3-dev
+
+# Install Reticulum
+python3 -m pip install rns
+
+
+
+
+

Raspberry Pi#

+

It is currently recommended to use a 64-bit version of the Raspberry Pi OS +if you want to run Reticulum on Raspberry Pi computers, since 32-bit versions +don’t always have packages available for some dependencies.

+

While it is possible to install and run Reticulum on 32-bit Rasperry Pi OSes, +it will require manually configuring and installing some packages, and is not +detailed in this manual.

+
+
+

Debian Bookworm#

+

On versions of Debian released after April 2023, it is no longer possible +to use pip to install packages onto your system. Unfortunately, you will need to +use the replacement pipx command instead, which places installed packages in an +isolated environment. This should not negatively affect Reticulum, but installation +via this method is not fully tested yet.

+
# Install pipx
+sudo apt install pipx
+
+# Make installed programs available on the command line
+pipx ensurepath
+
+# Install Reticulum
+pipx install rns
+
+
+
+
+

Ubuntu Lunar#

+

On versions of Ubuntu released after April 2023, it is no longer possible +to use pip to install packages onto your system. Unfortunately, you will need to +use the replacement pipx command instead, which places installed packages in an +isolated environment. This should not negatively affect Reticulum, but installation +via this method is not fully tested yet.

+
# Install pipx
+sudo apt install pipx
+
+# Make installed programs available on the command line
+pipx ensurepath
+
+# Install Reticulum
+pipx install rns
+
+
+
+
+
+

Pure-Python Reticulum#

+

In some rare cases, and on more obscure system types, it is not possible to +install one or more dependencies

+

On more unusual systems, and in some rare cases, it might not be possible to +install or even compile one or more of the above modules. In such situations, +you can use the rnspure package instead of the rns package, or use pip +with the --no-dependencies command-line option. The rnspure +package requires no external dependencies for installation. Please note that the +actual contents of the rns and rnspure packages are completely identical. +The only difference is that the rnspure package lists no dependencies required +for installation.

+

No matter how Reticulum is installed and started, it will load external dependencies +only if they are needed and available. If for example you want to use Reticulum +on a system that cannot support pyserial, it is perfectly possible to do so using +the rnspure package, but Reticulum will not be able to use serial-based interfaces. +All other available modules will still be loaded when needed.

+

Please Note! If you use the rnspure package to run Reticulum on systems that +do not support PyCA/cryptography, it is +important that you read and understand the Cryptographic Primitives +section of this manual.

+
+
+ +
+
+ +
+ +
+
+ + + + + + + + + + \ No newline at end of file diff --git a/build/manual/hardware.html b/build/manual/hardware.html new file mode 100644 index 0000000..b44d310 --- /dev/null +++ b/build/manual/hardware.html @@ -0,0 +1,512 @@ + + + + + + + + + Communications Hardware - Reticulum Network Stack 0.5.5 beta documentation + + + + + + + + + + + + + + + + + + Contents + + + + + + Menu + + + + + + + + Expand + + + + + + Light mode + + + + + + + + + + + + + + Dark mode + + + + + + + Auto light/dark mode + + + + + + + + + + + + + + + + + + + +
+
+
+ +
+ +
+
+ +
+ +
+
+ +
+
+
+ + + + + Back to top + +
+
+ +
+ +
+
+
+

Communications Hardware#

+

One of the truly valuable aspects of Reticulum is the ability to use it over +almost any conceivable kind of communications medium. The interface types +available for configuration in Reticulum are flexible enough to cover the use +of most wired and wireless communications hardware available, from decades-old +packet radio modems to modern millimeter-wave backhaul systems.

+

If you already have or operate some kind of communications hardware, there is a +very good chance that it will work with Reticulum out of the box. In case it does +not, it is possible to provide the necessary glue with very little effort using +for example the PipeInterface or the TCPClientInterface +in combination with code like TCP KISS Server +by simplyequipped.

+

While this broad support and flexibility is very useful, an abundance of options +can sometimes make it difficult to know where to begin, especially when you are +starting from scratch.

+

This chapter will outline a few different sensible starting paths to get +real-world functional wireless communications up and running with minimal cost +and effort. Two fundamental devices categories will be covered, RNodes and +WiFi-based radios.

+

While there are many other device categories that are useful in building Reticulum +networks, knowing how to employ just these two will make it possible to build +a wide range of useful networks with little effort.

+
+

RNode#

+

Reliable and general-purpose long-range digital radio transceiver systems are +commonly either very expensive, difficult to set up and operate, hard to source, +power-hungry, or all of the above at the same time. In an attempt to alleviate +this situation, the transceiver system RNode was designed. It is important to +note that RNode is not one specific device, from one particular vendor, but +an open plaform that anyone can use to build interoperable digital transceivers +suited to their needs and particular situations.

+

An RNode is a general purpose, interoperable, low-power and long-range, reliable, +open and flexible radio communications device. Depending on its components, it can +operate on many different frequency bands, and use many different modulation +schemes, but most commonly, and for the purposes of this chapter, we will limit +the discussion to RNodes using LoRa modulation in common ISM bands.

+

Avoid Confusion! RNodes can use LoRa as a physical-layer modulation, but it +does not use, and has nothing to do with the LoRaWAN protocol and standard, commonly +used for centrally controlled IoT devices. RNodes use raw LoRa modulation, without +any additional protocol overhead. All high-level protocol functionality is handled +directly by Reticulum.

+
+

Creating RNodes#

+

RNode has been designed as a system that is easy to replicate across time and +space. You can put together a functioning transceiver using commonly available +components, and a few open source software tools. While you can design and build RNodes +completely from scratch, to your exact desired specifications, this chapter +will explain the easiest possible approach to creating RNodes: Using common +LoRa development boards. This approach can be boiled down to two simple steps:

+
    +
  1. Obtain one or more supported development boards

  2. +
  3. Install the RNode firmware with the automated installer

  4. +
+

Once the firmware has been installed and provisioned by the install script, it +is ready to use with any software that supports RNodes, including Reticulum. +The device can be used with Reticulum by adding an RNodeInterface +to the configuration.

+
+
+

Supported Boards#

+

To create one or more RNodes, you will need to obtain supported development +boards. The following boards are supported by the auto-installer.

+
+

LilyGO LoRa32 v2.1#

+_images/board_t3v21.png +
    +
  • Supported Firmware Lines v1.x & v2.x

  • +
  • Transceiver IC Semtech SX1276

  • +
  • Device Platform ESP32

  • +
  • Manufacturer LilyGO

  • +
+
+
+

LilyGO LoRa32 v2.0#

+_images/board_t3v20.png +
    +
  • Supported Firmware Lines v1.x & v2.x

  • +
  • Transceiver IC Semtech SX1276

  • +
  • Device Platform ESP32

  • +
  • Manufacturer LilyGO

  • +
+
+
+

LilyGO T-Beam#

+_images/board_tbeam.png +
    +
  • Supported Firmware Lines v1.x & v2.x

  • +
  • Transceiver IC Semtech SX1276

  • +
  • Device Platform ESP32

  • +
  • Manufacturer LilyGO

  • +
+
+
+

Heltec LoRa32 v2.0#

+_images/board_heltec32.png +
    +
  • Supported Firmware Lines v1.x & v2.x

  • +
  • Transceiver IC Semtech SX1276

  • +
  • Device Platform ESP32

  • +
  • Manufacturer Heltec Automation

  • +
+
+
+

Unsigned RNode v2.x#

+_images/board_rnodev2.png +
    +
  • Supported Firmware Lines v1.x & v2.x

  • +
  • Transceiver IC Semtech SX1276

  • +
  • Device Platform ESP32

  • +
  • Manufacturer unsigned.io

  • +
+
+
+

Unsigned RNode v1.x#

+_images/board_rnode.png +
    +
  • Supported Firmware Lines v1.x

  • +
  • Transceiver IC Semtech SX1276

  • +
  • Device Platform AVR ATmega1284p

  • +
  • Manufacturer unsigned.io

  • +
+
+
+
+

Installation#

+

Once you have obtained compatible boards, you can install the RNode Firmware +using the RNode Configuration Utility. +If you have installed Reticulum on your system, the rnodeconf program will already be +available. If not, make sure that Python3 and pip is installed on your system, and +then install Reticulum with with pip:

+
pip install rns
+
+
+

Once installation has completed, it is time to start installing the firmware on your +devices. Run rnodeconf in auto-install mode like so:

+
rnodeconf --autoinstall
+
+
+

The utility will guide you through the installation process by asking a series of +questions about your hardware. Simply follow the guide, and the utility will +auto-install and configure your devices.

+
+
+

Usage with Reticulum#

+

When the devices have been installed and provisioned, you can use them with Reticulum +by adding the relevant interface section to the configuration +file of Reticulum. For v1.x firmwares, you will have to specify all interface parameters, +such as serial port and on-air parameters. For v2.x firmwares, you just need to specify +the Connection ID of the RNode, and Reticulum will automatically locate and connect to the +RNode, using the parameters stored in the RNode itself.

+
+
+

Suppliers#

+

Get in touch if you want to have your RNode supplier listed here, or if you want help to +get started with producing RNodes.

+
+
+
+

WiFi-based Hardware#

+

It is possible to use all kinds of both short- and long-range WiFi-based hardware +with Reticulum. Any kind of hardware that fully supports bridged Ethernet over the +WiFi interface will work with the AutoInterface in Reticulum. +Most devices will behave like this by default, or allow it via configuration options.

+

This means that you can simply configure the physical links of the WiFi based devices, +and start communicating over them using Reticulum. It is not necessary to enable any IP +infrastructure such as DHCP servers, DNS or similar, as long as at least Ethernet is +available, and packets are passed transparently over the physical WiFi-based devices.

+_images/radio_rblhg5.png +_images/radio_is5ac.png +

Below is a list of example WiFi (and similar) radios that work well for high capacity +Reticulum links over long distances:

+ +

This list is by no means exhaustive, and only serves as a few examples of radio hardware +that is relatively cheap while providing long range and high capacity for Reticulum +networks. As in all other cases, it is also possible for Reticulum to co-exist with IP +networks running concurrently on such devices.

+
+
+

Combining Hardware Types#

+

It is useful to combine different link and hardware types when designing and +building a network. One useful design pattern is to employ high-capacity point-to-point +links based on WiFi or millimeter-wave radios (with high-gain directional antennas) +for the network backbone, and using LoRa-based RNodes for covering large areas with +connectivity for client devices.

+
+
+ +
+
+ +
+ +
+
+ + + + + + + + + + \ No newline at end of file diff --git a/build/manual/index.html b/build/manual/index.html new file mode 100644 index 0000000..c1568ba --- /dev/null +++ b/build/manual/index.html @@ -0,0 +1,477 @@ + + + + + + + + + Reticulum Network Stack 0.5.5 beta documentation + + + + + + + + + + + + + + + + + + Contents + + + + + + Menu + + + + + + + + Expand + + + + + + Light mode + + + + + + + + + + + + + + Dark mode + + + + + + + Auto light/dark mode + + + + + + + + + + + + + + + + + + + +
+
+
+ +
+ +
+
+ +
+ +
+
+ +
+
+
+ + + + + Back to top + +
+
+ +
+ +
+
+
+

Reticulum Network Stack Manual#

+

This manual aims to provide you with all the information you need to +understand Reticulum, build networks or develop programs using it, or +to participate in the development of Reticulum itself.

+

This manual is also available in PDF and EPUB formats.

+
+

Table Of Contents#

+
+
+ +
+ +
+

Indices and Tables#

+ +
+
+ +
+
+ +
+ +
+
+ + + + + + + + + + \ No newline at end of file diff --git a/build/manual/interfaces.html b/build/manual/interfaces.html new file mode 100644 index 0000000..b2b0e4e --- /dev/null +++ b/build/manual/interfaces.html @@ -0,0 +1,1019 @@ + + + + + + + + + Supported Interfaces - Reticulum Network Stack 0.5.5 beta documentation + + + + + + + + + + + + + + + + + + Contents + + + + + + Menu + + + + + + + + Expand + + + + + + Light mode + + + + + + + + + + + + + + Dark mode + + + + + + + Auto light/dark mode + + + + + + + + + + + + + + + + + + + +
+
+
+ +
+ +
+
+ +
+ +
+
+ +
+
+
+ + + + + Back to top + +
+
+ +
+ +
+
+
+

Supported Interfaces#

+

Reticulum supports using many kinds of devices as networking interfaces, and +allows you to mix and match them in any way you choose. The number of distinct +network topologies you can create with Reticulum is more or less endless, but +common to them all is that you will need to define one or more interfaces +for Reticulum to use.

+

The following sections describe the interfaces currently available in Reticulum, +and gives example configurations for the respective interface types.

+

For a high-level overview of how networks can be formed over different interface +types, have a look at the Building Networks chapter of this +manual.

+
+

Auto Interface#

+

The Auto Interface enables communication with other discoverable Reticulum +nodes over autoconfigured IPv6 and UDP. It does not need any functional IP +infrastructure like routers or DHCP servers, but will require at least some +sort of switching medium between peers (a wired switch, a hub, a WiFi access +point or similar), and that link-local IPv6 is enabled in your operating +system, which should be enabled by default in almost all OSes.

+
# This example demonstrates a TCP server interface.
+# It will listen for incoming connections on the
+# specified IP address and port number.
+
+[[Default Interface]]
+  type = AutoInterface
+  interface_enabled = True
+
+  # You can create multiple isolated Reticulum
+  # networks on the same physical LAN by
+  # specifying different Group IDs.
+
+  group_id = reticulum
+
+  # You can also select specifically which
+  # kernel networking devices to use.
+
+  devices = wlan0,eth1
+
+  # Or let AutoInterface use all suitable
+  # devices except for a list of ignored ones.
+
+  ignored_devices = tun0,eth0
+
+
+

If you are connected to the Internet with IPv6, and your provider will route +IPv6 multicast, you can potentially configure the Auto Interface to globally +autodiscover other Reticulum nodes within your selected Group ID. You can specify +the discovery scope by setting it to one of link, admin, site, +organisation or global.

+
[[Default Interface]]
+  type = AutoInterface
+  interface_enabled = True
+
+  # Configure global discovery
+
+  group_id = custom_network_name
+  discovery_scope = global
+
+  # Other configuration options
+
+  discovery_port = 48555
+  data_port = 49555
+
+
+
+
+

I2P Interface#

+

The I2P interface lets you connect Reticulum instances over the +Invisible Internet Protocol. This can be +especially useful in cases where you want to host a globally reachable +Reticulum instance, but do not have access to any public IP addresses, +have a frequently changing IP address, or have firewalls blocking +inbound traffic.

+

Using the I2P interface, you will get a globally reachable, portable +and persistent I2P address that your Reticulum instance can be reached +at.

+

To use the I2P interface, you must have an I2P router running +on your system. The easiest way to achieve this is to download and +install the latest release +of the i2pd package. For more details about I2P, see the +geti2p.net website.

+

When an I2P router is running on your system, you can simply add +an I2P interface to Reticulum:

+
[[I2P]]
+  type = I2PInterface
+  interface_enabled = yes
+  connectable = yes
+
+
+

On the first start, Reticulum will generate a new I2P address for the +interface and start listening for inbound traffic on it. This can take +a while the first time, especially if your I2P router was also just +started, and is not yet well-connected to the I2P network. When ready, +you should see I2P base32 address printed to your log file. You can +also inspect the status of the interface using the rnstatus utility.

+

To connect to other Reticulum instances over I2P, just add a comma-separated +list of I2P base32 addresses to the peers option of the interface:

+
[[I2P]]
+  type = I2PInterface
+  interface_enabled = yes
+  connectable = yes
+  peers = 5urvjicpzi7q3ybztsef4i5ow2aq4soktfj7zedz53s47r54jnqq.b32.i2p
+
+
+

It can take anywhere from a few seconds to a few minutes to establish +I2P connections to the desired peers, so Reticulum handles the process +in the background, and will output relevant events to the log.

+

Please Note! While the I2P interface is the simplest way to use +Reticulum over I2P, it is also possible to tunnel the TCP server and +client interfaces over I2P manually. This can be useful in situations +where more control is needed, but requires manual tunnel setup through +the I2P daemon configuration.

+

It is important to note that the two methods are interchangably compatible. +You can use the I2PInterface to connect to a TCPServerInterface that +was manually tunneled over I2P, for example. This offers a high degree +of flexibility in network setup, while retaining ease of use in simpler +use-cases.

+
+
+

TCP Server Interface#

+

The TCP Server interface is suitable for allowing other peers to connect over +the Internet or private IP networks. When a TCP server interface has been +configured, other Reticulum peers can connect to it with a TCP Client interface.

+
# This example demonstrates a TCP server interface.
+# It will listen for incoming connections on the
+# specified IP address and port number.
+
+[[TCP Server Interface]]
+  type = TCPServerInterface
+  interface_enabled = True
+
+  # This configuration will listen on all IP
+  # interfaces on port 4242
+
+  listen_ip = 0.0.0.0
+  listen_port = 4242
+
+  # Alternatively you can bind to a specific IP
+
+  # listen_ip = 10.0.0.88
+  # listen_port = 4242
+
+  # Or a specific network device
+
+  # device = eth0
+  # port = 4242
+
+
+

Please Note! The TCP interfaces support tunneling over I2P, but to do so reliably, +you must use the i2p_tunneled option:

+
[[TCP Server on I2P]]
+    type = TCPServerInterface
+    interface_enabled = yes
+    listen_ip = 127.0.0.1
+    listen_port = 5001
+    i2p_tunneled = yes
+
+
+

In almost all cases, it is easier to use the dedicated I2PInterface, but for complete +control, and using I2P routers running on external systems, this option also exists.

+
+
+

TCP Client Interface#

+

To connect to a TCP server interface, you would naturally use the TCP client +interface. Many TCP Client interfaces from different peers can connect to the +same TCP Server interface at the same time.

+

The TCP interface types can also tolerate intermittency in the IP link layer. +This means that Reticulum will gracefully handle IP links that go up and down, +and restore connectivity after a failure, once the other end of a TCP interface reappears.

+
# Here's an example of a TCP Client interface. The
+# target_host can either be an IP address or a hostname.
+
+[[TCP Client Interface]]
+  type = TCPClientInterface
+  interface_enabled = True
+  target_host = 127.0.0.1
+  target_port = 4242
+
+
+

It is also possible to use this interface type to connect via other programs +or hardware devices that expose a KISS interface on a TCP port, for example +software-based soundmodems. To do this, use the kiss_framing option:

+
# Here's an example of a TCP Client interface that connects
+# to a software TNC soundmodem on a KISS over TCP port.
+
+[[TCP KISS Interface]]
+  type = TCPClientInterface
+  interface_enabled = True
+  kiss_framing = True
+  target_host = 127.0.0.1
+  target_port = 8001
+
+
+

Caution! Only use the KISS framing option when connecting to external devices +and programs like soundmodems and similar over TCP. When using the +TCPClientInterface in conjunction with the TCPServerInterface you should +never enable kiss_framing, since this will disable internal reliability and +recovery mechanisms that greatly improves performance over unreliable and +intermittent TCP links.

+

Please Note! The TCP interfaces support tunneling over I2P, but to do so reliably, +you must use the i2p_tunneled option:

+
[[TCP Client over I2P]]
+    type = TCPClientInterface
+    interface_enabled = yes
+    target_host = 127.0.0.1
+    target_port = 5001
+    i2p_tunneled = yes
+
+
+
+
+

UDP Interface#

+

A UDP interface can be useful for communicating over IP networks, both +private and the internet. It can also allow broadcast communication +over IP networks, so it can provide an easy way to enable connectivity +with all other peers on a local area network.

+

Please Note! Using broadcast UDP traffic has performance implications, +especially on WiFi. If your goal is simply to enable easy communication +with all peers in your local Ethernet broadcast domain, the +Auto Interface performs better, and is even +easier to use.

+
# This example enables communication with other
+# local Reticulum peers over UDP.
+
+[[UDP Interface]]
+  type = UDPInterface
+  interface_enabled = True
+
+  listen_ip = 0.0.0.0
+  listen_port = 4242
+  forward_ip = 255.255.255.255
+  forward_port = 4242
+
+  # The above configuration will allow communication
+  # within the local broadcast domains of all local
+  # IP interfaces.
+
+  # Instead of specifying listen_ip, listen_port,
+  # forward_ip and forward_port, you can also bind
+  # to a specific network device like below.
+
+  # device = eth0
+  # port = 4242
+
+  # Assuming the eth0 device has the address
+  # 10.55.0.72/24, the above configuration would
+  # be equivalent to the following manual setup.
+  # Note that we are both listening and forwarding to
+  # the broadcast address of the network segments.
+
+  # listen_ip = 10.55.0.255
+  # listen_port = 4242
+  # forward_ip = 10.55.0.255
+  # forward_port = 4242
+
+  # You can of course also communicate only with
+  # a single IP address
+
+  # listen_ip = 10.55.0.15
+  # listen_port = 4242
+  # forward_ip = 10.55.0.16
+  # forward_port = 4242
+
+
+
+
+

RNode LoRa Interface#

+

To use Reticulum over LoRa, the RNode interface +can be used, and offers full control over LoRa parameters.

+
# Here's an example of how to add a LoRa interface
+# using the RNode LoRa transceiver.
+
+[[RNode LoRa Interface]]
+  type = RNodeInterface
+
+  # Enable interface if you want use it!
+  interface_enabled = True
+
+  # Serial port for the device
+  port = /dev/ttyUSB0
+
+  # Set frequency to 867.2 MHz
+  frequency = 867200000
+
+  # Set LoRa bandwidth to 125 KHz
+  bandwidth = 125000
+
+  # Set TX power to 7 dBm (5 mW)
+  txpower = 7
+
+  # Select spreading factor 8. Valid
+  # range is 7 through 12, with 7
+  # being the fastest and 12 having
+  # the longest range.
+  spreadingfactor = 8
+
+  # Select coding rate 5. Valid range
+  # is 5 throough 8, with 5 being the
+  # fastest, and 8 the longest range.
+  codingrate = 5
+
+  # You can configure the RNode to send
+  # out identification on the channel with
+  # a set interval by configuring the
+  # following two parameters.
+  # id_callsign = MYCALL-0
+  # id_interval = 600
+
+  # For certain homebrew RNode interfaces
+  # with low amounts of RAM, using packet
+  # flow control can be useful. By default
+  # it is disabled.
+  flow_control = False
+
+
+
+
+

Serial Interface#

+

Reticulum can be used over serial ports directly, or over any device with a +serial port, that will transparently pass data. Useful for communicating +directly over a wire-pair, or for using devices such as data radios and lasers.

+
[[Serial Interface]]
+  type = SerialInterface
+  interface_enabled = True
+
+  # Serial port for the device
+  port = /dev/ttyUSB0
+
+  # Set the serial baud-rate and other
+  # configuration parameters.
+  speed = 115200
+  databits = 8
+  parity = none
+  stopbits = 1
+
+
+
+
+

Pipe Interface#

+

Using this interface, Reticulum can use any program as an interface via stdin and +stdout. This can be used to easily create virtual interfaces, or to interface with +custom hardware or other systems.

+
[[Pipe Interface]]
+  type = PipeInterface
+  interface_enabled = True
+
+  # External command to execute
+  command = netcat -l 5757
+
+  # Optional respawn delay, in seconds
+  respawn_delay = 5
+
+
+

Reticulum will write all packets to stdin of the command option, and will +continuously read and scan its stdout for Reticulum packets. If EOF is reached, +Reticulum will try to respawn the program after waiting for respawn_interval seconds.

+
+
+

KISS Interface#

+

With the KISS interface, you can use Reticulum over a variety of packet +radio modems and TNCs, including OpenModem. +KISS interfaces can also be configured to periodically send out beacons +for station identification purposes.

+
[[Packet Radio KISS Interface]]
+  type = KISSInterface
+  interface_enabled = True
+
+  # Serial port for the device
+  port = /dev/ttyUSB1
+
+  # Set the serial baud-rate and other
+  # configuration parameters.
+  speed = 115200
+  databits = 8
+  parity = none
+  stopbits = 1
+
+  # Set the modem preamble.
+  preamble = 150
+
+  # Set the modem TX tail.
+  txtail = 10
+
+  # Configure CDMA parameters. These
+  # settings are reasonable defaults.
+  persistence = 200
+  slottime = 20
+
+  # You can configure the interface to send
+  # out identification on the channel with
+  # a set interval by configuring the
+  # following two parameters. The KISS
+  # interface will only ID if the set
+  # interval has elapsed since it's last
+  # actual transmission. The interval is
+  # configured in seconds.
+  # This option is commented out and not
+  # used by default.
+  # id_callsign = MYCALL-0
+  # id_interval = 600
+
+  # Whether to use KISS flow-control.
+  # This is useful for modems that have
+  # a small internal packet buffer, but
+  # support packet flow control instead.
+  flow_control = false
+
+
+
+
+

AX.25 KISS Interface#

+

If you’re using Reticulum on amateur radio spectrum, you might want to +use the AX.25 KISS interface. This way, Reticulum will automatically +encapsulate it’s traffic in AX.25 and also identify your stations +transmissions with your callsign and SSID.

+

Only do this if you really need to! Reticulum doesn’t need the AX.25 +layer for anything, and it incurs extra overhead on every packet to +encapsulate in AX.25.

+

A more efficient way is to use the plain KISS interface with the +beaconing functionality described above.

+
[[Packet Radio AX.25 KISS Interface]]
+  type = AX25KISSInterface
+
+  # Set the station callsign and SSID
+  callsign = NO1CLL
+  ssid = 0
+
+  # Enable interface if you want use it!
+  interface_enabled = True
+
+  # Serial port for the device
+  port = /dev/ttyUSB2
+
+  # Set the serial baud-rate and other
+  # configuration parameters.
+  speed = 115200
+  databits = 8
+  parity = none
+  stopbits = 1
+
+  # Set the modem preamble. A 150ms
+  # preamble should be a reasonable
+  # default, but may need to be
+  # increased for radios with slow-
+  # opening squelch and long TX/RX
+  # turnaround
+  preamble = 150
+
+  # Set the modem TX tail. In most
+  # cases this should be kept as low
+  # as possible to not waste airtime.
+  txtail = 10
+
+  # Configure CDMA parameters. These
+  # settings are reasonable defaults.
+  persistence = 200
+  slottime = 20
+
+  # Whether to use KISS flow-control.
+  # This is useful for modems with a
+  # small internal packet buffer.
+  flow_control = false
+
+
+
+
+

Common Interface Options#

+

A number of general configuration options are available on most interfaces. +These can be used to control various aspects of interface behaviour.

+
+
    +
  • +
    The enabled option tells Reticulum whether or not +to bring up the interface. Defaults to False. For any +interface to be brought up, the enabled option +must be set to True or Yes.
    +
    +
  • +
  • +
    The mode option allows selecting the high-level behaviour +of the interface from a number of options.
    +
    +
    +
      +
    • The default value is full. In this mode, all discovery, +meshing and transport functionality is available.

    • +
    • In the access_point (or shorthand ap) mode, the +interface will operate as a network access point. In this +mode, announces will not be automatically broadcasted on +the interface, and paths to destinations on the interface +will have a much shorter expiry time. This mode is useful +for creating interfaces that are mostly quiet, unless when +someone is actually using them. An example of this could +be a radio interface serving a wide area, where users are +expected to connect momentarily, use the network, and then +disappear again.

    • +
    +
    +
  • +
  • +
    The outgoing option sets whether an interface is allowed +to transmit. Defaults to True. If set to False or No +the interface will only receive data, and never transmit.
    +
    +
  • +
  • +
    The network_name option sets the virtual network name for +the interface. This allows multiple separate network segments +to exist on the same physical channel or medium.
    +
    +
  • +
  • +
    The passphrase option sets an authentication passphrase on +the interface. This option can be used in conjunction with the +network_name option, or be used alone.
    +
    +
  • +
  • +
    The ifac_size option allows customising the length of the +Interface Authentication Codes carried by each packet on named +and/or authenticated network segments. It is set by default to +a size suitable for the interface in question, but can be set +to a custom size between 8 and 512 bits by using this option. +In normal usage, this option should not be changed from the +default.
    +
    +
  • +
  • +
    The announce_cap option lets you configure the maximum +bandwidth to allocate, at any given time, to propagating +announces and other network upkeep traffic. It is configured at +2% by default, and should normally not need to be changed. Can +be set to any value between 1 and 100.
    +
    +
    +

    If an interface exceeds its announce cap, it will queue announces +for later transmission. Reticulum will always prioritise propagating +announces from nearby nodes first. This ensures that the local +topology is prioritised, and that slow networks are not overwhelmed +by interconnected fast networks.

    +

    Destinations that are rapidly re-announcing will be down-prioritised +further. Trying to get “first-in-line” by announce spamming will have +the exact opposite effect: Getting moved to the back of the queue every +time a new announce from the excessively announcing destination is received.

    +

    This means that it is always beneficial to select a balanced +announce rate, and not announce more often than is actually necesarry +for your application to function.

    +
    +
  • +
  • +
    The bitrate option configures the interface bitrate. +Reticulum will use interface speeds reported by hardware, or +try to guess a suitable rate when the hardware doesn’t report +any. In most cases, the automatically found rate should be +sufficient, but it can be configured by using the bitrate +option, to set the interface speed in bits per second.
    +
    +
  • +
+
+
+
+

Interface Modes#

+

The optional mode setting is available on all interfaces, and allows +selecting the high-level behaviour of the interface from a number of modes. +These modes affect how Reticulum selects paths in the network, how announces +are propagated, how long paths are valid and how paths are discovered.

+

Configuring modes on interfaces is not strictly necessary, but can be useful +when building or connecting to more complex networks. If your Reticulum +instance is not running a Transport Node, it is rarely useful to configure +interface modes, and in such cases interfaces should generally be left in +the default mode.

+
+
    +
  • +
    The default mode is full. In this mode, all discovery, +meshing and transport functionality is activated.
    +
    +
  • +
  • +
    The gateway mode (or shorthand gw) also has all +discovery, meshing and transport functionality available, +but will additionally try to discover unknown paths on +behalf of other nodes residing on the gateway interface. +If Reticulum receives a path request for an unknown +destination, from a node on a gateway interface, it +will try to discover this path via all other active interfaces, +and forward the discovered path to the requestor if one is +found.
    +
    +
    +
    If you want to allow other nodes to widely resolve paths or connect +to a network via an interface, it might be useful to put it in this +mode. By creating a chain of gateway interfaces, other +nodes will be able to immediately discover paths to any +destination along the chain.
    +
    +
    +
    Please note! It is the interface facing the clients that +must be put into gateway mode for this to work, not +the interface facing the wider network (for this, the boundary +mode can be useful, though).
    +
    +
  • +
  • +
    In the access_point (or shorthand ap) mode, the +interface will operate as a network access point. In this +mode, announces will not be automatically broadcasted on +the interface, and paths to destinations on the interface +will have a much shorter expiry time. In addition, path +requests from clients on the access point interface will +be handled in the same way as the gateway interface.
    +
    +
    +
    This mode is useful for creating interfaces that remain +quiet, until someone actually starts using them. An example +of this could be a radio interface serving a wide area, +where users are expected to connect momentarily, use the +network, and then disappear again.
    +
    +
  • +
  • +
    The roaming mode should be used on interfaces that are +roaming (physically mobile), seen from the perspective of +other nodes in the network. As an example, if a vehicle is +equipped with an external LoRa interface, and an internal, +WiFi-based interface, that serves devices that are moving +with the vehicle, the external LoRa interface should be +configured as roaming, and the internal interface can +be left in the default mode. With transport enabled, such +a setup will allow all internal devices to reach each other, +and all other devices that are available on the LoRa side +of the network, when they are in range. Devices on the LoRa +side of the network will also be able to reach devices +internal to the vehicle, when it is in range. Paths via +roaming interfaces also expire faster.
    +
    +
  • +
  • +
    The purpose of the boundary mode is to specify interfaces +that establish connectivity with network segments that are +significantly different than the one this node exists on. +As an example, if a Reticulum instance is part of a LoRa-based +network, but also has a high-speed connection to a +public Transport Node available on the Internet, the interface +connecting over the Internet should be set to boundary mode.
    +
    +
  • +
+
+

For a table describing the impact of all modes on announce propagation, +please see the Announce Propagation Rules section.

+
+
+

Announce Rate Control#

+

The built-in announce control mechanisms and the default announce_cap +option described above are sufficient most of the time, but in some cases, especially on fast +interfaces, it may be useful to control the target announce rate. Using the +announce_rate_target, announce_rate_grace and announce_rate_penalty +options, this can be done on a per-interface basis, and moderates the rate at +which received announces are re-broadcasted to other interfaces.

+
+
    +
  • +
    The announce_rate_target option sets the minimum amount of time, +in seconds, that should pass between received announces, for any one +destination. As an example, setting this value to 3600 means that +announces received on this interface will only be re-transmitted and +propagated to other interfaces once every hour, no matter how often they +are received.
    +
    +
  • +
  • +
    The optional announce_rate_grace defines the number of times a destination +can violate the announce rate before the target rate is enforced.
    +
    +
  • +
  • +
    The optional announce_rate_penalty configures an extra amount of +time that is added to the normal rate target. As an example, if a penalty +of 7200 seconds is defined, once the rate target is enforced, the +destination in question will only have its announces propagated every +3 hours, until it lowers its actual announce rate to within the target.
    +
    +
  • +
+
+

These mechanisms, in conjunction with the annouce_cap mechanisms mentioned +above means that it is essential to select a balanced announce strategy for +your destinations. The more balanced you can make this decision, the easier +it will be for your destinations to make it into slower networks that many hops +away. Or you can prioritise only reaching high-capacity networks with more frequent +announces.

+

Current statistics and information about announce rates can be viewed using the +rnpath -r command.

+

It is important to note that there is no one right or wrong way to set up announce +rates. Slower networks will naturally tend towards using less frequent announces to +conserve bandwidth, while very fast networks can support applications that +need very frequent announces. Reticulum implements these mechanisms to ensure +that a large span of network types can seamlessly co-exist and interconnect.

+
+
+ +
+
+ +
+ +
+
+ + + + + + + + + + \ No newline at end of file diff --git a/build/manual/networks.html b/build/manual/networks.html new file mode 100644 index 0000000..6ae8078 --- /dev/null +++ b/build/manual/networks.html @@ -0,0 +1,480 @@ + + + + + + + + + Building Networks - Reticulum Network Stack 0.5.5 beta documentation + + + + + + + + + + + + + + + + + + Contents + + + + + + Menu + + + + + + + + Expand + + + + + + Light mode + + + + + + + + + + + + + + Dark mode + + + + + + + Auto light/dark mode + + + + + + + + + + + + + + + + + + + +
+
+
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+
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+ +
+
+ +
+
+
+ + + + + Back to top + +
+
+ +
+ +
+
+
+

Building Networks#

+

This chapter will provide you with the knowledge needed to build networks with +Reticulum, which can often be easier than using traditional stacks, since you +don’t have to worry about coordinating addresses, subnets and routing for an +entire network that you might not know how will evolve in the future. With +Reticulum, you can simply add more segments to your network when it becomes +necessary, and Reticulum will handle the convergence of the entire network +automatically.

+
+

Concepts & Overview#

+

There are important points that need to be kept in mind when building networks +with Reticulum:

+
+
    +
  • +
    In a Reticulum network, any node can autonomously generate as many addresses +(called destinations in Reticulum terminology) as it needs, which become +globally reachable to the rest of the network. There is no central point of +control over the address space.
    +
    +
  • +
  • +
    Reticulum was designed to handle both very small, and very large networks. +While the address space can support billions of endpoints, Reticulum is +also very useful when just a few devices needs to communicate.
    +
    +
  • +
  • +
    Low-bandwidth networks, like LoRa and packet radio, can interoperate and +interconnect with much larger and higher bandwidth networks without issue. +Reticulum automatically manages the flow of information to and from various +network segments, and when bandwidth is limited, local traffic is prioritised.
    +
    +
  • +
  • +
    Reticulum provides sender/initiator anonymity by default. There is no way +to filter traffic or discriminate it based on the source of the traffic.
    +
    +
  • +
  • +
    All traffic is encrypted using ephemeral keys generated by an Elliptic Curve +Diffie-Hellman key exchange on Curve25519. There is no way to inspect traffic +contents, and no way to prioritise or throttle certain kinds of traffic. +All transport and routing layers are thus completely agnostic to traffic type, +and will pass all traffic equally.
    +
    +
  • +
  • +
    Reticulum can function both with and without infrastructure. When transport +nodes are available, they can route traffic over multiple hops for other +nodes, and will function as a distributed cryptographic keystore. When there +is no transport nodes available, all nodes that are within communication range +can still communicate.
    +
    +
  • +
  • +
    Every node can become a transport node, simply by enabling it in it’s +configuration, but there is no need for every node on the network to be a +transport node. Letting every node be a transport node will in most cases +degrade the performance and reliability of the network.
    +
    +
    +

    In general terms, if a node is stationary, well-connected and kept running +most of the time, it is a good candidate to be a transport node. For optimal +performance, a network should contain the amount of transport nodes that +provides connectivity to the intended area / topography, and not many more +than that.

    +
    +
  • +
  • +
    Reticulum is designed to work reliably in open, trustless environments. This +means you can use it to create open-access networks, where participants can +join and leave in an free and unorganised manner. This property allows an +entirely new, and so far, mostly unexplored class of networked applications, +where networks, and the information flow within them can form and dissolve +organically.
    +
    +
  • +
  • +
    You can just as easily create closed networks, since Reticulum allows you to +add authentication to any interface. This means you can restrict access on +any interface type, even when using legacy devices, such as modems. You can +also mix authenticated and open interfaces on the same system. See the +Common Interface Options section of the Interfaces +chapter of this manual for information on how to set up interface authentication.
    +
    +
  • +
+
+

Reticulum allows you to mix very different kinds of networking mediums into a +unified mesh, or to keep everything within one medium. You could build a “virtual +network” running entirely over the Internet, where all nodes communicate over TCP +and UDP “channels”. You could also build such a network using other already-established +communications channels as the underlying carrier for Reticulum.

+

However, most real-world networks will probably involve either some form of +wireless or direct hardline communications. To allow Reticulum to communicate +over any type of medium, you must specify it in the configuration file, by default +located at ~/.reticulum/config. See the Supported Interfaces +chapter of this manual for interface configuration examples.

+

Any number of interfaces can be configured, and Reticulum will automatically +decide which are suitable to use in any given situation, depending on where +traffic needs to flow.

+
+
+

Example Scenarios#

+

This section illustrates a few example scenarios, and how they would, in general +terms, be planned, implemented and configured.

+
+

Interconnected LoRa Sites#

+

An organisation wants to provide communication and information services to it’s +members, which are located mainly in three separate areas. Three suitable hill-top +locations are found, where the organisation can install equipment: Site A, B and C.

+

Since the amount of data that needs to be exchanged between users is mainly text- +based, the bandwidth requirements are low, and LoRa radios are chosen to connect +users to the network.

+

Due to the hill-top locations found, there is radio line-of-sight between site A +and B, and also between site B and C. Because of this, the organisation does not +need to use the Internet to interconnect the sites, but purchases four Point-to-Point +WiFi based radios for interconnecting the sites.

+

At each site, a Raspberry Pi is installed to function as a gateway. A LoRa radio +is connected to the Pi with a USB cable, and the WiFi radio is connected to the +Ethernet port of the Pi. At site B, two WiFi radios are needed to be able to reach +both site A and site C, so an extra Ethernet adapter is connected to the Pi in +this location.

+

Once the hardware has been installed, Reticulum is installed on all the Pis, and at +site A and C, one interface is added for the LoRa radio, as well as one for the WiFi +radio. At site B, an interface for the LoRa radio, and one interface for each WiFi +radio is added to the Reticulum configuration file. The transport node option is +enabled in the configuration of all three gateways.

+

The network is now operational, and ready to serve users across all three areas. +The organisation prepares a LoRa radio that is supplied to the end users, along +with a Reticulum configuration file, that contains the right parameters for +communicating with the LoRa radios installed at the gateway sites.

+

Once users connect to the network, anyone will be able to communicate with anyone +else across all three sites.

+
+
+

Bridging Over the Internet#

+

As the organisation grows, several new communities form in places too far away +from the core network to be reachable over WiFi links. New gateways similar to those +previously installed are set up for the new communities at the new sites D and E, but +they are islanded from the core network, and only serve the local users.

+

After investigating the options, it is found that it is possible to install an +Internet connection at site A, and an interface on the Internet connection is +configured for Reticulum on the Raspberry Pi at site A.

+

A member of the organisation at site D, named Dori, is willing to help by sharing +the Internet connection she already has in her home, and is able to leave a Raspberry +Pi running. A new Reticulum interface is configured on her Pi, connecting to the newly +enabled Internet interface on the gateway at site A. Dori is now connected to both +all the nodes at her own local site (through the hill-top LoRa gateway), and all the +combined users of sites A, B and C. She then enables transport on her node, and +traffic from site D can now reach everyone at site A, B and C, and vice versa.

+
+
+

Growth and Convergence#

+

As the organisation grows, more gateways are added to keep up with the growing user +base. Some local gateways even add VHF radios and packet modems to reach outlying users +and communities that are out of reach for the LoRa radios and WiFi backhauls.

+

As more sites, gateways and users are connected, the amount of coordination required +is kept to a minimum. If one community wants to add connectivity to the next one +over, it can simply be done without having to involve everyone or coordinate address +space or routing tables.

+

With the added geographical coverage, the operators at site A one day find that +the original internet bridged interfaces are no longer utilised. The network has +converged to be completely self-connected, and the sites that were once poorly +connected outliers are now an integral part of the network.

+
+
+
+ +
+
+ +
+ +
+
+ + + + + + + + + + \ No newline at end of file diff --git a/build/manual/objects.inv b/build/manual/objects.inv new file mode 100644 index 0000000..058d214 Binary files /dev/null and b/build/manual/objects.inv differ diff --git a/build/manual/reference.html b/build/manual/reference.html new file mode 100644 index 0000000..3b586af --- /dev/null +++ b/build/manual/reference.html @@ -0,0 +1,2026 @@ + + + + + + + + + API Reference - Reticulum Network Stack 0.5.5 beta documentation + + + + + + + + + + + + + + + + + + Contents + + + + + + Menu + + + + + + + + Expand + + + + + + Light mode + + + + + + + + + + + + + + Dark mode + + + + + + + Auto light/dark mode + + + + + + + + + + + + + + + + + + + +
+
+
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+
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+
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+
+ + + + + Back to top + +
+
+ +
+ +
+
+
+

API Reference#

+

Communication over Reticulum networks is achieved by using a simple set of classes exposed by the RNS API. +This chapter lists and explains all classes exposed by the Reticulum Network Stack API, along with their method signatures and usage. It can be used as a reference while writing applications that utilise Reticulum, or it can be read in entirity to gain an understanding of the complete functionality of RNS from a developers perspective.

+

Reticulum

+
+
+class RNS.Reticulum(configdir=None, loglevel=None, logdest=None, verbosity=None)#
+

This class is used to initialise access to Reticulum within a +program. You must create exactly one instance of this class before +carrying out any other RNS operations, such as creating destinations +or sending traffic. Every independently executed program must create +their own instance of the Reticulum class, but Reticulum will +automatically handle inter-program communication on the same system, +and expose all connected programs to external interfaces as well.

+

As soon as an instance of this class is created, Reticulum will start +opening and configuring any hardware devices specified in the supplied +configuration.

+

Currently the first running instance must be kept running while other +local instances are connected, as the first created instance will +act as a master instance that directly communicates with external +hardware such as modems, TNCs and radios. If a master instance is +asked to exit, it will not exit until all client processes have +terminated (unless killed forcibly).

+

If you are running Reticulum on a system with several different +programs that use RNS starting and terminating at different times, +it will be advantageous to run a master RNS instance as a daemon for +other programs to use on demand.

+
+
+MTU = 500#
+

The MTU that Reticulum adheres to, and will expect other peers to +adhere to. By default, the MTU is 507 bytes. In custom RNS network +implementations, it is possible to change this value, but doing so will +completely break compatibility with all other RNS networks. An identical +MTU is a prerequisite for peers to communicate in the same network.

+

Unless you really know what you are doing, the MTU should be left at +the default value.

+
+ +
+
+ANNOUNCE_CAP = 2#
+

The maximum percentage of interface bandwidth that, at any given time, +may be used to propagate announces. If an announce was scheduled for +broadcasting on an interface, but doing so would exceed the allowed +bandwidth allocation, the announce will be queued for transmission +when there is bandwidth available.

+

Reticulum will always prioritise propagating announces with fewer +hops, ensuring that distant, large networks with many peers on fast +links don’t overwhelm the capacity of smaller networks on slower +mediums. If an announce remains queued for an extended amount of time, +it will eventually be dropped.

+

This value will be applied by default to all created interfaces, +but it can be configured individually on a per-interface basis.

+
+ +
+
+static should_use_implicit_proof()#
+

Returns whether proofs sent are explicit or implicit.

+
+
Returns:
+

True if the current running configuration specifies to use implicit proofs. False if not.

+
+
+
+ +
+
+static transport_enabled()#
+

Returns whether Transport is enabled for the running +instance.

+

When Transport is enabled, Reticulum will +route traffic for other peers, respond to path requests +and pass announces over the network.

+
+
Returns:
+

True if Transport is enabled, False if not.

+
+
+
+ +
+ +

Identity

+
+
+class RNS.Identity(create_keys=True)#
+

This class is used to manage identities in Reticulum. It provides methods +for encryption, decryption, signatures and verification, and is the basis +for all encrypted communication over Reticulum networks.

+
+
Parameters:
+

create_keys – Specifies whether new encryption and signing keys should be generated.

+
+
+
+
+CURVE = 'Curve25519'#
+

The curve used for Elliptic Curve DH key exchanges

+
+ +
+
+KEYSIZE = 512#
+

X25519 key size in bits. A complete key is the concatenation of a 256 bit encryption key, and a 256 bit signing key.

+
+ +
+
+TRUNCATED_HASHLENGTH = 128#
+

Constant specifying the truncated hash length (in bits) used by Reticulum +for addressable hashes and other purposes. Non-configurable.

+
+ +
+
+static recall(destination_hash)#
+

Recall identity for a destination hash.

+
+
Parameters:
+

destination_hash – Destination hash as bytes.

+
+
Returns:
+

An RNS.Identity instance that can be used to create an outgoing RNS.Destination, or None if the destination is unknown.

+
+
+
+ +
+
+static recall_app_data(destination_hash)#
+

Recall last heard app_data for a destination hash.

+
+
Parameters:
+

destination_hash – Destination hash as bytes.

+
+
Returns:
+

Bytes containing app_data, or None if the destination is unknown.

+
+
+
+ +
+
+static full_hash(data)#
+

Get a SHA-256 hash of passed data.

+
+
Parameters:
+

data – Data to be hashed as bytes.

+
+
Returns:
+

SHA-256 hash as bytes

+
+
+
+ +
+
+static truncated_hash(data)#
+

Get a truncated SHA-256 hash of passed data.

+
+
Parameters:
+

data – Data to be hashed as bytes.

+
+
Returns:
+

Truncated SHA-256 hash as bytes

+
+
+
+ +
+
+static get_random_hash()#
+

Get a random SHA-256 hash.

+
+
Parameters:
+

data – Data to be hashed as bytes.

+
+
Returns:
+

Truncated SHA-256 hash of random data as bytes

+
+
+
+ +
+
+static from_bytes(prv_bytes)#
+

Create a new RNS.Identity instance from bytes of private key. +Can be used to load previously created and saved identities into Reticulum.

+
+
Parameters:
+

prv_bytes – The bytes of private a saved private key. HAZARD! Never use this to generate a new key by feeding random data in prv_bytes.

+
+
Returns:
+

A RNS.Identity instance, or None if the bytes data was invalid.

+
+
+
+ +
+
+static from_file(path)#
+

Create a new RNS.Identity instance from a file. +Can be used to load previously created and saved identities into Reticulum.

+
+
Parameters:
+

path – The full path to the saved RNS.Identity data

+
+
Returns:
+

A RNS.Identity instance, or None if the loaded data was invalid.

+
+
+
+ +
+
+to_file(path)#
+

Saves the identity to a file. This will write the private key to disk, +and anyone with access to this file will be able to decrypt all +communication for the identity. Be very careful with this method.

+
+
Parameters:
+

path – The full path specifying where to save the identity.

+
+
Returns:
+

True if the file was saved, otherwise False.

+
+
+
+ +
+
+get_private_key()#
+
+
Returns:
+

The private key as bytes

+
+
+
+ +
+
+get_public_key()#
+
+
Returns:
+

The public key as bytes

+
+
+
+ +
+
+load_private_key(prv_bytes)#
+

Load a private key into the instance.

+
+
Parameters:
+

prv_bytes – The private key as bytes.

+
+
Returns:
+

True if the key was loaded, otherwise False.

+
+
+
+ +
+
+load_public_key(pub_bytes)#
+

Load a public key into the instance.

+
+
Parameters:
+

pub_bytes – The public key as bytes.

+
+
Returns:
+

True if the key was loaded, otherwise False.

+
+
+
+ +
+
+encrypt(plaintext)#
+

Encrypts information for the identity.

+
+
Parameters:
+

plaintext – The plaintext to be encrypted as bytes.

+
+
Returns:
+

Ciphertext token as bytes.

+
+
Raises:
+

KeyError if the instance does not hold a public key.

+
+
+
+ +
+
+decrypt(ciphertext_token)#
+

Decrypts information for the identity.

+
+
Parameters:
+

ciphertext – The ciphertext to be decrypted as bytes.

+
+
Returns:
+

Plaintext as bytes, or None if decryption fails.

+
+
Raises:
+

KeyError if the instance does not hold a private key.

+
+
+
+ +
+
+sign(message)#
+

Signs information by the identity.

+
+
Parameters:
+

message – The message to be signed as bytes.

+
+
Returns:
+

Signature as bytes.

+
+
Raises:
+

KeyError if the instance does not hold a private key.

+
+
+
+ +
+
+validate(signature, message)#
+

Validates the signature of a signed message.

+
+
Parameters:
+
    +
  • signature – The signature to be validated as bytes.

  • +
  • message – The message to be validated as bytes.

  • +
+
+
Returns:
+

True if the signature is valid, otherwise False.

+
+
Raises:
+

KeyError if the instance does not hold a public key.

+
+
+
+ +
+ +

Destination

+
+
+class RNS.Destination(identity, direction, type, app_name, *aspects)#
+

A class used to describe endpoints in a Reticulum Network. Destination +instances are used both to create outgoing and incoming endpoints. The +destination type will decide if encryption, and what type, is used in +communication with the endpoint. A destination can also announce its +presence on the network, which will also distribute necessary keys for +encrypted communication with it.

+
+
Parameters:
+
    +
  • identity – An instance of RNS.Identity. Can hold only public keys for an outgoing destination, or holding private keys for an ingoing.

  • +
  • directionRNS.Destination.IN or RNS.Destination.OUT.

  • +
  • typeRNS.Destination.SINGLE, RNS.Destination.GROUP or RNS.Destination.PLAIN.

  • +
  • app_name – A string specifying the app name.

  • +
  • *aspects – Any non-zero number of string arguments.

  • +
+
+
+
+
+static expand_name(identity, app_name, *aspects)#
+
+
Returns:
+

A string containing the full human-readable name of the destination, for an app_name and a number of aspects.

+
+
+
+ +
+
+static app_and_aspects_from_name(full_name)#
+
+
Returns:
+

A tuple containing the app name and a list of aspects, for a full-name string.

+
+
+
+ +
+
+static hash_from_name_and_identity(full_name, identity)#
+
+
Returns:
+

A destination name in adressable hash form, for a full name string and Identity instance.

+
+
+
+ +
+
+static hash(identity, app_name, *aspects)#
+
+
Returns:
+

A destination name in adressable hash form, for an app_name and a number of aspects.

+
+
+
+ +
+
+announce(app_data=None, path_response=False, attached_interface=None, tag=None, send=True)#
+

Creates an announce packet for this destination and broadcasts it on all +relevant interfaces. Application specific data can be added to the announce.

+
+
Parameters:
+
    +
  • app_databytes containing the app_data.

  • +
  • path_response – Internal flag used by RNS.Transport. Ignore.

  • +
+
+
+
+ +
+ +

Set or query whether the destination accepts incoming link requests.

+
+
Parameters:
+

accepts – If True or False, this method sets whether the destination accepts incoming link requests. If not provided or None, the method returns whether the destination currently accepts link requests.

+
+
Returns:
+

True or False depending on whether the destination accepts incoming link requests, if the accepts parameter is not provided or None.

+
+
+
+ +
+ +

Registers a function to be called when a link has been established to +this destination.

+
+
Parameters:
+

callback – A function or method with the signature callback(link) to be called when a new link is established with this destination.

+
+
+
+ +
+
+set_packet_callback(callback)#
+

Registers a function to be called when a packet has been received by +this destination.

+
+
Parameters:
+

callback – A function or method with the signature callback(data, packet) to be called when this destination receives a packet.

+
+
+
+ +
+
+set_proof_requested_callback(callback)#
+

Registers a function to be called when a proof has been requested for +a packet sent to this destination. Allows control over when and if +proofs should be returned for received packets.

+
+
Parameters:
+

callback – A function or method to with the signature callback(packet) be called when a packet that requests a proof is received. The callback must return one of True or False. If the callback returns True, a proof will be sent. If it returns False, a proof will not be sent.

+
+
+
+ +
+
+set_proof_strategy(proof_strategy)#
+

Sets the destinations proof strategy.

+
+
Parameters:
+

proof_strategy – One of RNS.Destination.PROVE_NONE, RNS.Destination.PROVE_ALL or RNS.Destination.PROVE_APP. If RNS.Destination.PROVE_APP is set, the proof_requested_callback will be called to determine whether a proof should be sent or not.

+
+
+
+ +
+
+register_request_handler(path, response_generator=None, allow=ALLOW_NONE, allowed_list=None)#
+

Registers a request handler.

+
+
Parameters:
+
    +
  • path – The path for the request handler to be registered.

  • +
  • response_generator – A function or method with the signature response_generator(path, data, request_id, link_id, remote_identity, requested_at) to be called. Whatever this funcion returns will be sent as a response to the requester. If the function returns None, no response will be sent.

  • +
  • allow – One of RNS.Destination.ALLOW_NONE, RNS.Destination.ALLOW_ALL or RNS.Destination.ALLOW_LIST. If RNS.Destination.ALLOW_LIST is set, the request handler will only respond to requests for identified peers in the supplied list.

  • +
  • allowed_list – A list of bytes-like RNS.Identity hashes.

  • +
+
+
Raises:
+

ValueError if any of the supplied arguments are invalid.

+
+
+
+ +
+
+deregister_request_handler(path)#
+

Deregisters a request handler.

+
+
Parameters:
+

path – The path for the request handler to be deregistered.

+
+
Returns:
+

True if the handler was deregistered, otherwise False.

+
+
+
+ +
+
+create_keys()#
+

For a RNS.Destination.GROUP type destination, creates a new symmetric key.

+
+
Raises:
+

TypeError if called on an incompatible type of destination.

+
+
+
+ +
+
+get_private_key()#
+

For a RNS.Destination.GROUP type destination, returns the symmetric private key.

+
+
Raises:
+

TypeError if called on an incompatible type of destination.

+
+
+
+ +
+
+load_private_key(key)#
+

For a RNS.Destination.GROUP type destination, loads a symmetric private key.

+
+
Parameters:
+

key – A bytes-like containing the symmetric key.

+
+
Raises:
+

TypeError if called on an incompatible type of destination.

+
+
+
+ +
+
+encrypt(plaintext)#
+

Encrypts information for RNS.Destination.SINGLE or RNS.Destination.GROUP type destination.

+
+
Parameters:
+

plaintext – A bytes-like containing the plaintext to be encrypted.

+
+
Raises:
+

ValueError if destination does not hold a necessary key for encryption.

+
+
+
+ +
+
+decrypt(ciphertext)#
+

Decrypts information for RNS.Destination.SINGLE or RNS.Destination.GROUP type destination.

+
+
Parameters:
+

ciphertextBytes containing the ciphertext to be decrypted.

+
+
Raises:
+

ValueError if destination does not hold a necessary key for decryption.

+
+
+
+ +
+
+sign(message)#
+

Signs information for RNS.Destination.SINGLE type destination.

+
+
Parameters:
+

messageBytes containing the message to be signed.

+
+
Returns:
+

A bytes-like containing the message signature, or None if the destination could not sign the message.

+
+
+
+ +
+
+set_default_app_data(app_data=None)#
+

Sets the default app_data for the destination. If set, the default +app_data will be included in every announce sent by the destination, +unless other app_data is specified in the announce method.

+
+
Parameters:
+

app_data – A bytes-like containing the default app_data, or a callable returning a bytes-like containing the app_data.

+
+
+
+ +
+
+clear_default_app_data()#
+

Clears default app_data previously set for the destination.

+
+ +
+ +

Packet

+
+
+class RNS.Packet(destination, data, create_receipt=True)#
+

The Packet class is used to create packet instances that can be sent +over a Reticulum network. Packets will automatically be encrypted if +they are adressed to a RNS.Destination.SINGLE destination, +RNS.Destination.GROUP destination or a RNS.Link.

+

For RNS.Destination.GROUP destinations, Reticulum will use the +pre-shared key configured for the destination. All packets to group +destinations are encrypted with the same AES-128 key.

+

For RNS.Destination.SINGLE destinations, Reticulum will use a newly +derived ephemeral AES-128 key for every packet.

+

For RNS.Link destinations, Reticulum will use per-link +ephemeral keys, and offers Forward Secrecy.

+
+
Parameters:
+
    +
  • destination – A RNS.Destination instance to which the packet will be sent.

  • +
  • data – The data payload to be included in the packet as bytes.

  • +
  • create_receipt – Specifies whether a RNS.PacketReceipt should be created when instantiating the packet.

  • +
+
+
+
+
+ENCRYPTED_MDU = 383#
+

The maximum size of the payload data in a single encrypted packet

+
+ +
+
+PLAIN_MDU = 464#
+

The maximum size of the payload data in a single unencrypted packet

+
+ +
+
+send()#
+

Sends the packet.

+
+
Returns:
+

A RNS.PacketReceipt instance if create_receipt was set to True when the packet was instantiated, if not returns None. If the packet could not be sent False is returned.

+
+
+
+ +
+
+resend()#
+

Re-sends the packet.

+
+
Returns:
+

A RNS.PacketReceipt instance if create_receipt was set to True when the packet was instantiated, if not returns None. If the packet could not be sent False is returned.

+
+
+
+ +
+ +

Packet Receipt

+
+
+class RNS.PacketReceipt#
+

The PacketReceipt class is used to receive notifications about +RNS.Packet instances sent over the network. Instances +of this class are never created manually, but always returned from +the send() method of a RNS.Packet instance.

+
+
+get_status()#
+
+
Returns:
+

The status of the associated RNS.Packet instance. Can be one of RNS.PacketReceipt.SENT, RNS.PacketReceipt.DELIVERED, RNS.PacketReceipt.FAILED or RNS.PacketReceipt.CULLED.

+
+
+
+ +
+
+get_rtt()#
+
+
Returns:
+

The round-trip-time in seconds

+
+
+
+ +
+
+set_timeout(timeout)#
+

Sets a timeout in seconds

+
+
Parameters:
+

timeout – The timeout in seconds.

+
+
+
+ +
+
+set_delivery_callback(callback)#
+

Sets a function that gets called if a successfull delivery has been proven.

+
+
Parameters:
+

callback – A callable with the signature callback(packet_receipt)

+
+
+
+ +
+
+set_timeout_callback(callback)#
+

Sets a function that gets called if the delivery times out.

+
+
Parameters:
+

callback – A callable with the signature callback(packet_receipt)

+
+
+
+ +
+ +

Link

+
+ +

This class is used to establish and manage links to other peers. When a +link instance is created, Reticulum will attempt to establish verified +and encrypted connectivity with the specified destination.

+
+
Parameters:
+
    +
  • destination – A RNS.Destination instance which to establish a link to.

  • +
  • established_callback – An optional function or method with the signature callback(link) to be called when the link has been established.

  • +
  • closed_callback – An optional function or method with the signature callback(link) to be called when the link is closed.

  • +
+
+
+
+
+CURVE = 'Curve25519'#
+

The curve used for Elliptic Curve DH key exchanges

+
+ +
+
+ESTABLISHMENT_TIMEOUT_PER_HOP = 6#
+

Timeout for link establishment in seconds per hop to destination.

+
+ +
+
+KEEPALIVE_TIMEOUT_FACTOR = 4#
+

RTT timeout factor used in link timeout calculation.

+
+ +
+
+STALE_GRACE = 2#
+

Grace period in seconds used in link timeout calculation.

+
+ +
+
+KEEPALIVE = 360#
+

Interval for sending keep-alive packets on established links in seconds.

+
+ +
+
+STALE_TIME = 720#
+

If no traffic or keep-alive packets are received within this period, the +link will be marked as stale, and a final keep-alive packet will be sent. +If after this no traffic or keep-alive packets are received within RTT * +KEEPALIVE_TIMEOUT_FACTOR + STALE_GRACE, the link is considered timed out, +and will be torn down.

+
+ +
+
+identify(identity)#
+

Identifies the initiator of the link to the remote peer. This can only happen +once the link has been established, and is carried out over the encrypted link. +The identity is only revealed to the remote peer, and initiator anonymity is +thus preserved. This method can be used for authentication.

+
+
Parameters:
+

identity – An RNS.Identity instance to identify as.

+
+
+
+ +
+
+request(path, data=None, response_callback=None, failed_callback=None, progress_callback=None, timeout=None)#
+

Sends a request to the remote peer.

+
+
Parameters:
+
    +
  • path – The request path.

  • +
  • response_callback – An optional function or method with the signature response_callback(request_receipt) to be called when a response is received. See the Request Example for more info.

  • +
  • failed_callback – An optional function or method with the signature failed_callback(request_receipt) to be called when a request fails. See the Request Example for more info.

  • +
  • progress_callback – An optional function or method with the signature progress_callback(request_receipt) to be called when progress is made receiving the response. Progress can be accessed as a float between 0.0 and 1.0 by the request_receipt.progress property.

  • +
  • timeout – An optional timeout in seconds for the request. If None is supplied it will be calculated based on link RTT.

  • +
+
+
Returns:
+

A RNS.RequestReceipt instance if the request was sent, or False if it was not.

+
+
+
+ +
+
+get_establishment_rate()#
+
+
Returns:
+

The data transfer rate at which the link establishment procedure ocurred, in bits per second.

+
+
+
+ +
+
+no_inbound_for()#
+
+
Returns:
+

The time in seconds since last inbound packet on the link.

+
+
+
+ +
+
+no_outbound_for()#
+
+
Returns:
+

The time in seconds since last outbound packet on the link.

+
+
+
+ +
+
+inactive_for()#
+
+
Returns:
+

The time in seconds since activity on the link.

+
+
+
+ +
+
+get_remote_identity()#
+
+
Returns:
+

The identity of the remote peer, if it is known. Calling this method will not query the remote initiator to reveal its identity. Returns None if the link initiator has not already independently called the identify(identity) method.

+
+
+
+ +
+
+teardown()#
+

Closes the link and purges encryption keys. New keys will +be used if a new link to the same destination is established.

+
+ +
+
+get_channel()#
+

Get the Channel for this link.

+
+
Returns:
+

Channel object

+
+
+
+ +
+ +

Registers a function to be called when a link has been +torn down.

+
+
Parameters:
+

callback – A function or method with the signature callback(link) to be called.

+
+
+
+ +
+
+set_packet_callback(callback)#
+

Registers a function to be called when a packet has been +received over this link.

+
+
Parameters:
+

callback – A function or method with the signature callback(message, packet) to be called.

+
+
+
+ +
+
+set_resource_callback(callback)#
+

Registers a function to be called when a resource has been +advertised over this link. If the function returns True +the resource will be accepted. If it returns False it will +be ignored.

+
+
Parameters:
+

callback – A function or method with the signature callback(resource) to be called. Please note that only the basic information of the resource is available at this time, such as get_transfer_size(), get_data_size(), get_parts() and is_compressed().

+
+
+
+ +
+
+set_resource_started_callback(callback)#
+

Registers a function to be called when a resource has begun +transferring over this link.

+
+
Parameters:
+

callback – A function or method with the signature callback(resource) to be called.

+
+
+
+ +
+
+set_resource_concluded_callback(callback)#
+

Registers a function to be called when a resource has concluded +transferring over this link.

+
+
Parameters:
+

callback – A function or method with the signature callback(resource) to be called.

+
+
+
+ +
+
+set_remote_identified_callback(callback)#
+

Registers a function to be called when an initiating peer has +identified over this link.

+
+
Parameters:
+

callback – A function or method with the signature callback(link, identity) to be called.

+
+
+
+ +
+
+set_resource_strategy(resource_strategy)#
+

Sets the resource strategy for the link.

+
+
Parameters:
+

resource_strategy – One of RNS.Link.ACCEPT_NONE, RNS.Link.ACCEPT_ALL or RNS.Link.ACCEPT_APP. If RNS.Link.ACCEPT_APP is set, the resource_callback will be called to determine whether the resource should be accepted or not.

+
+
Raises:
+

TypeError if the resource strategy is unsupported.

+
+
+
+ +
+ +

Request Receipt

+
+
+class RNS.RequestReceipt#
+

An instance of this class is returned by the request method of RNS.Link +instances. It should never be instantiated manually. It provides methods to +check status, response time and response data when the request concludes.

+
+
+get_request_id()#
+
+
Returns:
+

The request ID as bytes.

+
+
+
+ +
+
+get_status()#
+
+
Returns:
+

The current status of the request, one of RNS.RequestReceipt.FAILED, RNS.RequestReceipt.SENT, RNS.RequestReceipt.DELIVERED, RNS.RequestReceipt.READY.

+
+
+
+ +
+
+get_progress()#
+
+
Returns:
+

The progress of a response being received as a float between 0.0 and 1.0.

+
+
+
+ +
+
+get_response()#
+
+
Returns:
+

The response as bytes if it is ready, otherwise None.

+
+
+
+ +
+
+get_response_time()#
+
+
Returns:
+

The response time of the request in seconds.

+
+
+
+ +
+ +

Resource

+
+
+class RNS.Resource(data, link, advertise=True, auto_compress=True, callback=None, progress_callback=None, timeout=None)#
+

The Resource class allows transferring arbitrary amounts +of data over a link. It will automatically handle sequencing, +compression, coordination and checksumming.

+
+
Parameters:
+
    +
  • data – The data to be transferred. Can be bytes or an open file handle. See the Filetransfer Example for details.

  • +
  • link – The RNS.Link instance on which to transfer the data.

  • +
  • advertise – Optional. Whether to automatically advertise the resource. Can be True or False.

  • +
  • auto_compress – Optional. Whether to auto-compress the resource. Can be True or False.

  • +
  • callback – An optional callable with the signature callback(resource). Will be called when the resource transfer concludes.

  • +
  • progress_callback – An optional callable with the signature callback(resource). Will be called whenever the resource transfer progress is updated.

  • +
+
+
+
+
+advertise()#
+

Advertise the resource. If the other end of the link accepts +the resource advertisement it will begin transferring.

+
+ +
+
+cancel()#
+

Cancels transferring the resource.

+
+ +
+
+get_progress()#
+
+
Returns:
+

The current progress of the resource transfer as a float between 0.0 and 1.0.

+
+
+
+ +
+
+get_transfer_size()#
+
+
Returns:
+

The number of bytes needed to transfer the resource.

+
+
+
+ +
+
+get_data_size()#
+
+
Returns:
+

The total data size of the resource.

+
+
+
+ +
+
+get_parts()#
+
+
Returns:
+

The number of parts the resource will be transferred in.

+
+
+
+ +
+
+get_segments()#
+
+
Returns:
+

The number of segments the resource is divided into.

+
+
+
+ +
+
+get_hash()#
+
+
Returns:
+

The hash of the resource.

+
+
+
+ +
+
+is_compressed()#
+
+
Returns:
+

Whether the resource is compressed.

+
+
+
+ +
+ +

Channel

+
+
+class RNS.Channel.Channel#
+

Provides reliable delivery of messages over +a link.

+

Channel differs from Request and +Resource in some important ways:

+
+
+
Continuous

Messages can be sent or received as long as +the Link is open.

+
+
Bi-directional

Messages can be sent in either direction on +the Link; neither end is the client or +server.

+
+
Size-constrained

Messages must be encoded into a single packet.

+
+
+
+

Channel is similar to Packet, except that it +provides reliable delivery (automatic retries) as well +as a structure for exchanging several types of +messages over the Link.

+

Channel is not instantiated directly, but rather +obtained from a Link with get_channel().

+
+
+register_message_type(message_class: Type[MessageBase])#
+

Register a message class for reception over a Channel.

+

Message classes must extend MessageBase.

+
+
Parameters:
+

message_class – Class to register

+
+
+
+ +
+
+add_message_handler(callback: MessageCallbackType)#
+

Add a handler for incoming messages. A handler +has the following signature:

+

(message: MessageBase) -> bool

+

Handlers are processed in the order they are +added. If any handler returns True, processing +of the message stops; handlers after the +returning handler will not be called.

+
+
Parameters:
+

callback – Function to call

+
+
+
+ +
+
+remove_message_handler(callback: MessageCallbackType)#
+

Remove a handler added with add_message_handler.

+
+
Parameters:
+

callback – handler to remove

+
+
+
+ +
+
+is_ready_to_send() bool#
+

Check if Channel is ready to send.

+
+
Returns:
+

True if ready

+
+
+
+ +
+
+send(message: MessageBase) Envelope#
+

Send a message. If a message send is attempted and +Channel is not ready, an exception is thrown.

+
+
Parameters:
+

message – an instance of a MessageBase subclass

+
+
+
+ +
+
+property MDU#
+

Maximum Data Unit: the number of bytes available +for a message to consume in a single send. This +value is adjusted from the Link MDU to accommodate +message header information.

+
+
Returns:
+

number of bytes available

+
+
+
+ +
+ +

MessageBase

+
+
+class RNS.MessageBase#
+

Base type for any messages sent or received on a Channel. +Subclasses must define the two abstract methods as well as +the MSGTYPE class variable.

+
+
+MSGTYPE = None#
+

Defines a unique identifier for a message class.

+
    +
  • Must be unique within all classes registered with a Channel

  • +
  • Must be less than 0xf000. Values greater than or equal to 0xf000 are reserved.

  • +
+
+ +
+
+abstract pack() bytes#
+

Create and return the binary representation of the message

+
+
Returns:
+

binary representation of message

+
+
+
+ +
+
+abstract unpack(raw: bytes)#
+

Populate message from binary representation

+
+
Parameters:
+

raw – binary representation

+
+
+
+ +
+ +

Buffer

+
+
+class RNS.Buffer#
+

Static functions for creating buffered streams that send +and receive over a Channel.

+

These functions use BufferedReader, BufferedWriter, +and BufferedRWPair to add buffering to +RawChannelReader and RawChannelWriter.

+
+
+static create_reader(stream_id: int, channel: Channel, ready_callback: Optional[Callable[[int], None]] = None) BufferedReader#
+

Create a buffered reader that reads binary data sent +over a Channel, with an optional callback when +new data is available.

+

Callback signature: (ready_bytes: int) -> None

+

For more information on the reader-specific functions +of this object, see the Python documentation for +BufferedReader

+
+
Parameters:
+
    +
  • stream_id – the local stream id to receive from

  • +
  • channel – the channel to receive on

  • +
  • ready_callback – function to call when new data is available

  • +
+
+
Returns:
+

a BufferedReader object

+
+
+
+ +
+
+static create_writer(stream_id: int, channel: Channel) BufferedWriter#
+

Create a buffered writer that writes binary data over +a Channel.

+

For more information on the writer-specific functions +of this object, see the Python documentation for +BufferedWriter

+
+
Parameters:
+
    +
  • stream_id – the remote stream id to send to

  • +
  • channel – the channel to send on

  • +
+
+
Returns:
+

a BufferedWriter object

+
+
+
+ +
+
+static create_bidirectional_buffer(receive_stream_id: int, send_stream_id: int, channel: Channel, ready_callback: Optional[Callable[[int], None]] = None) BufferedRWPair#
+

Create a buffered reader/writer pair that reads and +writes binary data over a Channel, with an +optional callback when new data is available.

+

Callback signature: (ready_bytes: int) -> None

+

For more information on the reader-specific functions +of this object, see the Python documentation for +BufferedRWPair

+
+
Parameters:
+
    +
  • receive_stream_id – the local stream id to receive at

  • +
  • send_stream_id – the remote stream id to send to

  • +
  • channel – the channel to send and receive on

  • +
  • ready_callback – function to call when new data is available

  • +
+
+
Returns:
+

a BufferedRWPair object

+
+
+
+ +
+ +

RawChannelReader

+
+
+class RNS.RawChannelReader(stream_id: int, channel: Channel)#
+

An implementation of RawIOBase that receives +binary stream data sent over a Channel.

+
+

This class generally need not be instantiated directly. +Use RNS.Buffer.create_reader(), +RNS.Buffer.create_writer(), and +RNS.Buffer.create_bidirectional_buffer() functions +to create buffered streams with optional callbacks.

+

For additional information on the API of this +object, see the Python documentation for +RawIOBase.

+
+
+
+__init__(stream_id: int, channel: Channel)#
+

Create a raw channel reader.

+
+
Parameters:
+
    +
  • stream_id – local stream id to receive at

  • +
  • channelChannel object to receive from

  • +
+
+
+
+ +
+
+add_ready_callback(cb: Callable[[int], None])#
+

Add a function to be called when new data is available. +The function should have the signature (ready_bytes: int) -> None

+
+
Parameters:
+

cb – function to call

+
+
+
+ +
+
+remove_ready_callback(cb: Callable[[int], None])#
+

Remove a function added with RNS.RawChannelReader.add_ready_callback()

+
+
Parameters:
+

cb – function to remove

+
+
+
+ +
+ +

RawChannelWriter

+
+
+class RNS.RawChannelWriter(stream_id: int, channel: Channel)#
+

An implementation of RawIOBase that receives +binary stream data sent over a channel.

+
+

This class generally need not be instantiated directly. +Use RNS.Buffer.create_reader(), +RNS.Buffer.create_writer(), and +RNS.Buffer.create_bidirectional_buffer() functions +to create buffered streams with optional callbacks.

+

For additional information on the API of this +object, see the Python documentation for +RawIOBase.

+
+
+
+__init__(stream_id: int, channel: Channel)#
+

Create a raw channel writer.

+
+
Parameters:
+
    +
  • stream_id – remote stream id to sent do

  • +
  • channelChannel object to send on

  • +
+
+
+
+ +
+ +

Transport

+
+
+class RNS.Transport#
+

Through static methods of this class you can interact with the +Transport system of Reticulum.

+
+
+PATHFINDER_M = 128#
+

Maximum amount of hops that Reticulum will transport a packet.

+
+ +
+
+static register_announce_handler(handler)#
+

Registers an announce handler.

+
+
Parameters:
+

handler – Must be an object with an aspect_filter attribute and a received_announce(destination_hash, announced_identity, app_data) callable. See the Announce Example for more info.

+
+
+
+ +
+
+static deregister_announce_handler(handler)#
+

Deregisters an announce handler.

+
+
Parameters:
+

handler – The announce handler to be deregistered.

+
+
+
+ +
+
+static has_path(destination_hash)#
+
+
Parameters:
+

destination_hash – A destination hash as bytes.

+
+
Returns:
+

True if a path to the destination is known, otherwise False.

+
+
+
+ +
+
+static hops_to(destination_hash)#
+
+
Parameters:
+

destination_hash – A destination hash as bytes.

+
+
Returns:
+

The number of hops to the specified destination, or RNS.Transport.PATHFINDER_M if the number of hops is unknown.

+
+
+
+ +
+
+static next_hop(destination_hash)#
+
+
Parameters:
+

destination_hash – A destination hash as bytes.

+
+
Returns:
+

The destination hash as bytes for the next hop to the specified destination, or None if the next hop is unknown.

+
+
+
+ +
+
+static next_hop_interface(destination_hash)#
+
+
Parameters:
+

destination_hash – A destination hash as bytes.

+
+
Returns:
+

The interface for the next hop to the specified destination, or None if the interface is unknown.

+
+
+
+ +
+
+static request_path(destination_hash, on_interface=None, tag=None, recursive=False)#
+

Requests a path to the destination from the network. If +another reachable peer on the network knows a path, it +will announce it.

+
+
Parameters:
+
    +
  • destination_hash – A destination hash as bytes.

  • +
  • on_interface – If specified, the path request will only be sent on this interface. In normal use, Reticulum handles this automatically, and this parameter should not be used.

  • +
+
+
+
+ +
+ +
+ +
+
+ +
+ +
+
+ + + + + + + + + + \ No newline at end of file diff --git a/build/manual/search.html b/build/manual/search.html new file mode 100644 index 0000000..50dbed1 --- /dev/null +++ b/build/manual/search.html @@ -0,0 +1,278 @@ + + + + + + + Search - Reticulum Network Stack 0.5.5 beta documentation + + + + + + + + + + + + + + + + + Contents + + + + + + Menu + + + + + + + + Expand + + + + + + Light mode + + + + + + + + + + + + + + Dark mode + + + + + + + Auto light/dark mode + + + + + + + + + + + + + + + + + + + +
+
+
+ +
+ +
+
+ +
+ +
+
+ +
+
+
+ + + + + Back to top + +
+
+ +
+ +
+
+ + + +
+ +
+
+
+ + +
+
+ + Generated with Sphinx and + Furo + +
+
+
+ +
+
+
+ +
+
+ +
+
+ + + + + + + + + + + + + \ No newline at end of file diff --git a/build/manual/searchindex.js b/build/manual/searchindex.js new file mode 100644 index 0000000..76d264e --- /dev/null +++ b/build/manual/searchindex.js @@ -0,0 +1 @@ +Search.setIndex({"docnames": ["examples", "forhumans", "gettingstartedfast", "hardware", "index", "interfaces", "networks", "reference", "support", "understanding", "using", "whatis"], "filenames": ["examples.rst", "forhumans.rst", "gettingstartedfast.rst", "hardware.rst", "index.rst", "interfaces.rst", "networks.rst", "reference.rst", "support.rst", "understanding.rst", "using.rst", "whatis.rst"], "titles": ["Code Examples", "An Explanation of Reticulum for Human Beings", "Getting Started Fast", "Communications Hardware", "Reticulum Network Stack Manual", "Supported Interfaces", "Building Networks", "API Reference", "Support Reticulum", "Understanding Reticulum", "Using Reticulum on Your System", "What is Reticulum?"], "terms": {"A": [0, 2, 5, 6, 7, 9, 11], 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the Destination": [[9, "reaching-the-destination"]], "Link Establishment in Detail": [[9, "link-establishment-in-detail"]], "Resources": [[9, "resources"]], "Reference Setup": [[9, "reference-setup"]], "Protocol Specifics": [[9, "protocol-specifics"]], "Packet Prioritisation": [[9, "packet-prioritisation"]], "Interface Access Codes": [[9, "interface-access-codes"]], "Wire Format": [[9, "wire-format"]], "Announce Propagation Rules": [[9, "announce-propagation-rules"]], "Cryptographic Primitives": [[9, "cryptographic-primitives"]], "Using Reticulum on Your System": [[10, "using-reticulum-on-your-system"]], "Configuration & Data": [[10, "configuration-data"]], "Included Utility Programs": [[10, "included-utility-programs"]], "The rnsd Utility": [[10, "the-rnsd-utility"]], "The rnstatus Utility": [[10, "the-rnstatus-utility"]], "The rnpath Utility": [[10, "the-rnpath-utility"]], "The rnprobe Utility": [[10, "the-rnprobe-utility"]], "The rncp Utility": [[10, "the-rncp-utility"]], "The rnx 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"deregister_announce_handler() (rns.transport static method)": [[7, "RNS.Transport.deregister_announce_handler"]], "deregister_request_handler() (rns.destination method)": [[7, "RNS.Destination.deregister_request_handler"]], "encrypt() (rns.destination method)": [[7, "RNS.Destination.encrypt"]], "encrypt() (rns.identity method)": [[7, "RNS.Identity.encrypt"]], "expand_name() (rns.destination static method)": [[7, "RNS.Destination.expand_name"]], "from_bytes() (rns.identity static method)": [[7, "RNS.Identity.from_bytes"]], "from_file() (rns.identity static method)": [[7, "RNS.Identity.from_file"]], "full_hash() (rns.identity static method)": [[7, "RNS.Identity.full_hash"]], "get_channel() (rns.link method)": [[7, "RNS.Link.get_channel"]], "get_data_size() (rns.resource method)": [[7, "RNS.Resource.get_data_size"]], "get_establishment_rate() (rns.link method)": [[7, "RNS.Link.get_establishment_rate"]], "get_hash() (rns.resource method)": [[7, "RNS.Resource.get_hash"]], "get_parts() (rns.resource method)": [[7, "RNS.Resource.get_parts"]], "get_private_key() (rns.destination method)": [[7, "RNS.Destination.get_private_key"]], "get_private_key() (rns.identity method)": [[7, "RNS.Identity.get_private_key"]], "get_progress() (rns.requestreceipt method)": [[7, "RNS.RequestReceipt.get_progress"]], "get_progress() (rns.resource method)": [[7, "RNS.Resource.get_progress"]], "get_public_key() (rns.identity method)": [[7, "RNS.Identity.get_public_key"]], "get_random_hash() (rns.identity static method)": [[7, "RNS.Identity.get_random_hash"]], "get_remote_identity() (rns.link method)": [[7, "RNS.Link.get_remote_identity"]], "get_request_id() (rns.requestreceipt method)": [[7, "RNS.RequestReceipt.get_request_id"]], "get_response() (rns.requestreceipt method)": [[7, "RNS.RequestReceipt.get_response"]], "get_response_time() (rns.requestreceipt method)": [[7, "RNS.RequestReceipt.get_response_time"]], "get_rtt() (rns.packetreceipt method)": [[7, "RNS.PacketReceipt.get_rtt"]], "get_segments() (rns.resource method)": [[7, "RNS.Resource.get_segments"]], "get_status() (rns.packetreceipt method)": [[7, "RNS.PacketReceipt.get_status"]], "get_status() (rns.requestreceipt method)": [[7, "RNS.RequestReceipt.get_status"]], "get_transfer_size() (rns.resource method)": [[7, "RNS.Resource.get_transfer_size"]], "has_path() (rns.transport static method)": [[7, "RNS.Transport.has_path"]], "hash() (rns.destination static method)": [[7, "RNS.Destination.hash"]], "hash_from_name_and_identity() (rns.destination static method)": [[7, "RNS.Destination.hash_from_name_and_identity"]], "hops_to() (rns.transport static method)": [[7, "RNS.Transport.hops_to"]], "identify() (rns.link method)": [[7, "RNS.Link.identify"]], "inactive_for() (rns.link method)": [[7, "RNS.Link.inactive_for"]], "is_compressed() (rns.resource method)": [[7, "RNS.Resource.is_compressed"]], "is_ready_to_send() (rns.channel.channel method)": [[7, "RNS.Channel.Channel.is_ready_to_send"]], "load_private_key() (rns.destination method)": [[7, "RNS.Destination.load_private_key"]], "load_private_key() (rns.identity method)": [[7, "RNS.Identity.load_private_key"]], "load_public_key() (rns.identity method)": [[7, "RNS.Identity.load_public_key"]], "next_hop() (rns.transport static method)": [[7, "RNS.Transport.next_hop"]], "next_hop_interface() (rns.transport static method)": [[7, "RNS.Transport.next_hop_interface"]], "no_inbound_for() (rns.link method)": [[7, "RNS.Link.no_inbound_for"]], "no_outbound_for() (rns.link method)": [[7, "RNS.Link.no_outbound_for"]], "pack() (rns.messagebase method)": [[7, "RNS.MessageBase.pack"]], "recall() (rns.identity static method)": [[7, "RNS.Identity.recall"]], "recall_app_data() (rns.identity static method)": [[7, "RNS.Identity.recall_app_data"]], "register_announce_handler() (rns.transport static method)": [[7, "RNS.Transport.register_announce_handler"]], "register_message_type() (rns.channel.channel method)": [[7, "RNS.Channel.Channel.register_message_type"]], "register_request_handler() (rns.destination method)": [[7, "RNS.Destination.register_request_handler"]], "remove_message_handler() (rns.channel.channel method)": [[7, "RNS.Channel.Channel.remove_message_handler"]], "remove_ready_callback() (rns.rawchannelreader method)": [[7, "RNS.RawChannelReader.remove_ready_callback"]], "request() (rns.link method)": [[7, "RNS.Link.request"]], "request_path() (rns.transport static method)": [[7, "RNS.Transport.request_path"]], "resend() (rns.packet method)": [[7, "RNS.Packet.resend"]], "send() (rns.channel.channel method)": [[7, "RNS.Channel.Channel.send"]], "send() (rns.packet method)": [[7, "RNS.Packet.send"]], "set_default_app_data() (rns.destination method)": [[7, "RNS.Destination.set_default_app_data"]], "set_delivery_callback() (rns.packetreceipt method)": [[7, "RNS.PacketReceipt.set_delivery_callback"]], "set_link_closed_callback() (rns.link method)": [[7, "RNS.Link.set_link_closed_callback"]], "set_link_established_callback() (rns.destination method)": [[7, "RNS.Destination.set_link_established_callback"]], "set_packet_callback() (rns.destination method)": [[7, "RNS.Destination.set_packet_callback"]], "set_packet_callback() (rns.link method)": [[7, "RNS.Link.set_packet_callback"]], "set_proof_requested_callback() (rns.destination method)": [[7, "RNS.Destination.set_proof_requested_callback"]], "set_proof_strategy() (rns.destination method)": [[7, "RNS.Destination.set_proof_strategy"]], "set_remote_identified_callback() (rns.link method)": [[7, "RNS.Link.set_remote_identified_callback"]], "set_resource_callback() (rns.link method)": [[7, "RNS.Link.set_resource_callback"]], "set_resource_concluded_callback() (rns.link method)": [[7, "RNS.Link.set_resource_concluded_callback"]], "set_resource_started_callback() (rns.link method)": [[7, "RNS.Link.set_resource_started_callback"]], "set_resource_strategy() (rns.link method)": [[7, "RNS.Link.set_resource_strategy"]], "set_timeout() (rns.packetreceipt method)": [[7, "RNS.PacketReceipt.set_timeout"]], "set_timeout_callback() (rns.packetreceipt method)": [[7, "RNS.PacketReceipt.set_timeout_callback"]], "should_use_implicit_proof() (rns.reticulum static method)": [[7, "RNS.Reticulum.should_use_implicit_proof"]], "sign() (rns.destination method)": [[7, "RNS.Destination.sign"]], "sign() (rns.identity method)": [[7, "RNS.Identity.sign"]], "teardown() (rns.link method)": [[7, "RNS.Link.teardown"]], "to_file() (rns.identity method)": [[7, "RNS.Identity.to_file"]], "transport_enabled() (rns.reticulum static method)": [[7, "RNS.Reticulum.transport_enabled"]], "truncated_hash() (rns.identity static method)": [[7, "RNS.Identity.truncated_hash"]], "unpack() (rns.messagebase method)": [[7, "RNS.MessageBase.unpack"]], "validate() (rns.identity method)": [[7, "RNS.Identity.validate"]]}}) \ No newline at end of file diff --git a/build/manual/support.html b/build/manual/support.html new file mode 100644 index 0000000..89d4f34 --- /dev/null +++ b/build/manual/support.html @@ -0,0 +1,343 @@ + + + + + + + + + Support Reticulum - Reticulum Network Stack 0.5.5 beta documentation + + + + + + + + + + + + + + + + + + Contents + + + + + + Menu + + + + + + + + Expand + + + + + + Light mode + + + + + + + + + + + + + + Dark mode + + + + + + + Auto light/dark mode + + + + + + + + + + + + + + + + + + + +
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Support Reticulum#

+

You can help support the continued development of open, free and private communications +systems by donating, providing feedback and contributing code and learning resources.

+
+

Donations#

+

Donations are gratefully accepted via the following channels:

+
Monero:
+84FpY1QbxHcgdseePYNmhTHcrgMX4nFfBYtz2GKYToqHVVhJp8Eaw1Z1EedRnKD19b3B8NiLCGVxzKV17UMmmeEsCrPyA5w
+
+Ethereum:
+0x81F7B979fEa6134bA9FD5c701b3501A2e61E897a
+
+Bitcoin:
+3CPmacGm34qYvR6XWLVEJmi2aNe3PZqUuq
+
+Ko-Fi:
+https://ko-fi.com/markqvist
+
+
+

Are certain features in the development roadmap are important to you or your +organisation? Make them a reality quickly by sponsoring their implementation.

+
+
+

Provide Feedback#

+

All feedback on the usage, functioning and potential dysfunctioning of any and +all components of the system is very valuable to the continued development and +improvement of Reticulum. Absolutely no automated analytics, telemetry, error +reporting or statistics is collected and reported by Reticulum under any +circumstances, so we rely on old-fashioned human feedback.

+
+
+

Contribute Code#

+

Join us on the GitHub repository to +report issues, suggest functionality and contribute code to Reticulum.

+
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+ + + + + + + + + + \ No newline at end of file diff --git a/build/manual/understanding.html b/build/manual/understanding.html new file mode 100644 index 0000000..915b065 --- /dev/null +++ b/build/manual/understanding.html @@ -0,0 +1,1209 @@ + + + + + + + + + Understanding Reticulum - Reticulum Network Stack 0.5.5 beta documentation + + + + + + + + + + + + + + + + + + Contents + + + + + + Menu + + + + + + + + Expand + + + + + + Light mode + + + + + + + + + + + + + + Dark mode + + + + + + + Auto light/dark mode + + + + + + + + + + + + + + + + + + + +
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+

Understanding Reticulum#

+

This chapter will briefly describe the overall purpose and operating principles of Reticulum. +It should give you an overview of how the stack works, and an understanding of how to +develop networked applications using Reticulum.

+

This chapter is not an exhaustive source of information on Reticulum, at least not yet. Currently, +the only complete repository, and final authority on how Reticulum actually functions, is the Python +reference implementation and API reference. That being said, this chapter is an essential resource in +understanding how Reticulum works from a high-level perspective, along with the general principles of +Reticulum, and how to apply them when creating your own networks or software.

+

After reading this document, you should be well-equipped to understand how a Reticulum network +operates, what it can achieve, and how you can use it yourself. If you want to help out with the +development, this is also the place to start, since it will provide a pretty clear overview of the +sentiments and the philosophy behind Reticulum, what problems it seeks to solve, and how it +approaches those solutions.

+
+

Motivation#

+

The primary motivation for designing and implementing Reticulum has been the current lack of +reliable, functional and secure minimal-infrastructure modes of digital communication. It is my +belief that it is highly desirable to create a reliable and efficient way to set up long-range digital +communication networks that can securely allow exchange of information between people and +machines, with no central point of authority, control, censorship or barrier to entry.

+

Almost all of the various networking systems in use today share a common limitation: They +require large amounts of coordination and centralised trust and power to function. To join such networks, you need approval +of gatekeepers in control. This need for coordination and trust inevitably leads to an environment of +central control, where it’s very easy for infrastructure operators or governments to control or alter +traffic, and censor or persecute unwanted actors. It also makes it completely impossible to freely deploy +and use networks at will, like one would use other common tools that enhance individual agency and freedom.

+

Reticulum aims to require as little coordination and trust as possible. It aims to make secure, +anonymous and permissionless networking and information exchange a tool that anyone can just pick up and use.

+

Since Reticulum is completely medium agnostic, it can be used to build networks on whatever is best +suited to the situation, or whatever you have available. In some cases, this might be packet radio +links over VHF frequencies, in other cases it might be a 2.4 GHz +network using off-the-shelf radios, or it might be using common LoRa development boards.

+

At the time of release of this document, the fastest and easiest setup for development and testing is using +LoRa radio modules with an open source firmware (see the section Reference Setup), +connected to any kind of computer or mobile device that Reticulum can run on.

+

The ultimate aim of Reticulum is to allow anyone to be their own network operator, and to make it +cheap and easy to cover vast areas with a myriad of independent, interconnectable and autonomous networks. +Reticulum is not one network, it is a tool to build thousands of networks. Networks without +kill-switches, surveillance, censorship and control. Networks that can freely interoperate, associate and disassociate +with each other, and require no central oversight. Networks for human beings. Networks for the people.

+
+
+

Goals#

+

To be as widely usable and efficient to deploy as possible, the following goals have been used to +guide the design of Reticulum:

+
    +
  • +
    Fully useable as open source software stack

    Reticulum must be implemented with, and be able to run using only open source software. This is +critical to ensuring the availability, security and transparency of the system.

    +
    +
    +
  • +
  • +
    Hardware layer agnosticism

    Reticulum must be fully hardware agnostic, and shall be useable over a wide range of +physical networking layers, such as data radios, serial lines, modems, handheld transceivers, +wired Ethernet, WiFi, or anything else that can carry a digital data stream. Hardware made for +dedicated Reticulum use shall be as cheap as possible and use off-the-shelf components, so +it can be easily modified and replicated by anyone interested in doing so.

    +
    +
    +
  • +
  • +
    Very low bandwidth requirements

    Reticulum should be able to function reliably over links with a transmission capacity as low +as 500 bits per second.

    +
    +
    +
  • +
  • +
    Encryption by default

    Reticulum must use strong encryption by default for all communication.

    +
    +
    +
  • +
  • +
    Initiator Anonymity

    It must be possible to communicate over a Reticulum network without revealing any identifying +information about oneself.

    +
    +
    +
  • +
  • +
    Unlicensed use

    Reticulum shall be functional over physical communication mediums that do not require any +form of license to use. Reticulum must be designed in a way, so it is usable over ISM radio +frequency bands, and can provide functional long distance links in such conditions, for example +by connecting a modem to a PMR or CB radio, or by using LoRa or WiFi modules.

    +
    +
    +
  • +
  • +
    Supplied software

    In addition to the core networking stack and API, that allows a developer to build +applications with Reticulum, a basic set of Reticulum-based communication tools must be +implemented and released along with Reticulum itself. These shall serve both as a +functional, basic communication suite, and as an example and learning resource to others wishing +to build applications with Reticulum.

    +
    +
    +
  • +
  • +
    Ease of use

    The reference implementation of Reticulum is written in Python, to make it easy to use +and understand. A programmer with only basic experience should be able to use +Reticulum to write networked applications.

    +
    +
    +
  • +
  • +
    Low cost

    It shall be as cheap as possible to deploy a communication system based on Reticulum. This +should be achieved by using cheap off-the-shelf hardware that potential users might already +own. The cost of setting up a functioning node should be less than $100 even if all parts +needs to be purchased.

    +
    +
    +
  • +
+
+
+

Introduction & Basic Functionality#

+

Reticulum is a networking stack suited for high-latency, low-bandwidth links. Reticulum is at its +core a message oriented system. It is suited for both local point-to-point or point-to-multipoint +scenarios where all nodes are within range of each other, as well as scenarios where packets need +to be transported over multiple hops in a complex network to reach the recipient.

+

Reticulum does away with the idea of addresses and ports known from IP, TCP and UDP. Instead +Reticulum uses the singular concept of destinations. Any application using Reticulum as its +networking stack will need to create one or more destinations to receive data, and know the +destinations it needs to send data to.

+

All destinations in Reticulum are _represented_ as a 16 byte hash. This hash is derived from truncating a full +SHA-256 hash of identifying characteristics of the destination. To users, the destination addresses +will be displayed as 16 hexadecimal bytes, like this example: <13425ec15b621c1d928589718000d814>.

+

The truncation size of 16 bytes (128 bits) for destinations has been chosen as a reasonable trade-off +between address space +and packet overhead. The address space accommodated by this size can support many billions of +simultaneously active devices on the same network, while keeping packet overhead low, which is +essential on low-bandwidth networks. In the very unlikely case that this address space nears +congestion, a one-line code change can upgrade the Reticulum address space all the way up to 256 +bits, ensuring the Reticulum address space could potentially support galactic-scale networks. +This is obviously complete and ridiculous over-allocation, and as such, the current 128 bits should +be sufficient, even far into the future.

+

By default Reticulum encrypts all data using elliptic curve cryptography and AES. Any packet sent to a +destination is encrypted with a per-packet derived key. Reticulum can also set up an encrypted +channel to a destination, called a Link. Both data sent over Links and single packets offer +Initiator Anonymity, and links additionally offer Forward Secrecy by using an Elliptic Curve +Diffie Hellman key exchange on Curve25519 to derive per-link ephemeral keys. The multi-hop transport, +coordination, verification and reliability layers are fully autonomous and also based on elliptic +curve cryptography.

+

Reticulum also offers symmetric key encryption for group-oriented communications, as well as +unencrypted packets for local broadcast purposes.

+

Reticulum can connect to a variety of interfaces such as radio modems, data radios and serial ports, +and offers the possibility to easily tunnel Reticulum traffic over IP links such as the Internet or +private IP networks.

+
+

Destinations#

+

To receive and send data with the Reticulum stack, an application needs to create one or more +destinations. Reticulum uses three different basic destination types, and one special:

+
    +
  • +
    Single

    The single destination type is the most common type in Reticulum, and should be used for +most purposes. It is always identified by a unique public key. Any data sent to this +destination will be encrypted using ephemeral keys derived from an ECDH key exchange, and will +only be readable by the creator of the destination, who holds the corresponding private key.

    +
    +
    +
  • +
  • +
    Plain

    A plain destination type is unencrypted, and suited for traffic that should be broadcast to a +number of users, or should be readable by anyone. Traffic to a plain destination is not encrypted. +Generally, plain destinations can be used for broadcast information intended to be public. +Plain destinations are only reachable directly, and packets addressed to plain destinations are +never transported over multiple hops in the network. To be transportable over multiple hops in Reticulum, information +must be encrypted, since Reticulum uses the per-packet encryption to verify routing paths and +keep them alive.

    +
    +
    +
  • +
  • +
    Group

    The group special destination type, that defines a symmetrically encrypted virtual destination. +Data sent to this destination will be encrypted with a symmetric key, and will be readable by +anyone in possession of the key, but as with the plain destination type, packets to this type +of destination are not currently transported over multiple hops, although a planned upgrade +to Reticulum will allow globally reachable group destinations.

    +
    +
    +
  • +
  • +
    Link

    A link is a special destination type, that serves as an abstract channel to a single +destination, directly connected or over multiple hops. The link also offers reliability and +more efficient encryption, forward secrecy, initiator anonymity, and as such can be useful even +when a node is directly reachable. It also offers a more capable API and allows easily carrying +out requests and responses, large data transfers and more.

    +
    +
    +
  • +
+
+

Destination Naming#

+

Destinations are created and named in an easy to understand dotted notation of aspects, and +represented on the network as a hash of this value. The hash is a SHA-256 truncated to 128 bits. The +top level aspect should always be a unique identifier for the application using the destination. +The next levels of aspects can be defined in any way by the creator of the application.

+

Aspects can be as long and as plentiful as required, and a resulting long destination name will not +impact efficiency, as names are always represented as truncated SHA-256 hashes on the network.

+

As an example, a destination for a environmental monitoring application could be made up of the +application name, a device type and measurement type, like this:

+
app name  : environmentlogger
+aspects   : remotesensor, temperature
+
+full name : environmentlogger.remotesensor.temperature
+hash      : 4faf1b2e0a077e6a9d92fa051f256038
+
+
+

For the single destination, Reticulum will automatically append the associated public key as a +destination aspect before hashing. This is done to ensure only the correct destination is reached, +since anyone can listen to any destination name. Appending the public key ensures that a given +packet is only directed at the destination that holds the corresponding private key to decrypt the +packet.

+

Take note! There is a very important concept to understand here:

+
    +
  • Anyone can use the destination name environmentlogger.remotesensor.temperature

  • +
  • Each destination that does so will still have a unique destination hash, and thus be uniquely +addressable, because their public keys will differ.

  • +
+

In actual use of single destination naming, it is advisable not to use any uniquely identifying +features in aspect naming. Aspect names should be general terms describing what kind of destination +is represented. The uniquely identifying aspect is always achieved by appending the public key, +which expands the destination into a uniquely identifiable one. Reticulum does this automatically.

+

Any destination on a Reticulum network can be addressed and reached simply by knowing its +destination hash (and public key, but if the public key is not known, it can be requested from the +network simply by knowing the destination hash). The use of app names and aspects makes it easy to +structure Reticulum programs and makes it possible to filter what information and data your program +receives.

+

To recap, the different destination types should be used in the following situations:

+
    +
  • +
    Single

    When private communication between two endpoints is needed. Supports multiple hops.

    +
    +
    +
  • +
  • +
    Group

    When private communication between two or more endpoints is needed. Supports multiple hops +indirectly, but must first be established through a single destination.

    +
    +
    +
  • +
  • +
    Plain

    When plain-text communication is desirable, for example when broadcasting information, or for local discovery purposes.

    +
    +
    +
  • +
+

To communicate with a single destination, you need to know its public key. Any method for +obtaining the public key is valid, but Reticulum includes a simple mechanism for making other +nodes aware of your destinations public key, called the announce. It is also possible to request +an unknown public key from the network, as all transport instances serve as a distributed ledger +of public keys.

+

Note that public key information can be shared and verified in other ways than using the +built-in announce functionality, and that it is therefore not required to use the announce and path request +functionality to obtain public keys. It is by far the easiest though, and should definitely be used +if there is not a very good reason for doing it differently.

+
+
+
+

Public Key Announcements#

+

An announce will send a special packet over any relevant interfaces, containing all needed +information about the destination hash and public key, and can also contain some additional, +application specific data. The entire packet is signed by the sender to ensure authenticity. It is not +required to use the announce functionality, but in many cases it will be the simplest way to share +public keys on the network. The announce mechanism also serves to establish end-to-end connectivity +to the announced destination, as the announce propagates through the network.

+

As an example, an announce in a simple messenger application might contain the following information:

+
    +
  • The announcers destination hash

  • +
  • The announcers public key

  • +
  • Application specific data, in this case the users nickname and availability status

  • +
  • A random blob, making each new announce unique

  • +
  • An Ed25519 signature of the above information, verifying authenticity

  • +
+

With this information, any Reticulum node that receives it will be able to reconstruct an outgoing +destination to securely communicate with that destination. You might have noticed that there is one +piece of information lacking to reconstruct full knowledge of the announced destination, and that is +the aspect names of the destination. These are intentionally left out to save bandwidth, since they +will be implicit in almost all cases. The receiving application will already know them. If a destination +name is not entirely implicit, information can be included in the application specific data part that +will allow the receiver to infer the naming.

+

It is important to note that announces will be forwarded throughout the network according to a +certain pattern. This will be detailed in the section +The Announce Mechanism in Detail.

+

In Reticulum, destinations are allowed to move around the network at will. This is very different from +protocols such as IP, where an address is always expected to stay within the network segment it was assigned in. +This limitation does not exist in Reticulum, and any destination is completely portable over the entire topography +of the network, and can even be moved to other Reticulum networks than the one it was created in, and +still become reachable. To update its reachability, a destination simply needs to send an announce on any +networks it is part of. After a short while, it will be globally reachable in the network.

+

Seeing how single destinations are always tied to a private/public key pair leads us to the next topic.

+
+
+

Identities#

+

In Reticulum, an identity does not necessarily represent a personal identity, but is an abstraction that +can represent any kind of verifiable entity. This could very well be a person, but it could also be the +control interface of a machine, a program, robot, computer, sensor or something else entirely. In +general, any kind of agent that can act, or be acted upon, or store or manipulate information, can be +represented as an identity. An identity can be used to create any number of destinations.

+

A single destination will always have an identity tied to it, but not plain or group +destinations. Destinations and identities share a multilateral connection. You can create a +destination, and if it is not connected to an identity upon creation, it will just create a new one to use +automatically. This may be desirable in some situations, but often you will probably want to create +the identity first, and then use it to create new destinations.

+

As an example, we could use an identity to represent the user of a messaging application. +Destinations can then be created by this identity to allow communication to reach the user. +In all cases it is of great importance to store the private keys associated with any +Reticulum Identity securely and privately, since obtaining access to the identity keys equals +obtaining access and controlling reachability to any destinations created by that identity.

+
+
+

Getting Further#

+

The above functions and principles form the core of Reticulum, and would suffice to create +functional networked applications in local clusters, for example over radio links where all interested +nodes can directly hear each other. But to be truly useful, we need a way to direct traffic over multiple +hops in the network.

+

In the following sections, two concepts that allow this will be introduced, paths and links.

+
+
+
+

Reticulum Transport#

+

The methods of routing used in traditional networks are fundamentally incompatible with the physical medium +types and circumstances that Reticulum was designed to handle. These mechanisms mostly assume trust at the physical layer, +and often needs a lot more bandwidth than Reticulum can assume is available. Since Reticulum is designed to +survive running over open radio spectrum, no such trust can be assumed, and bandwidth is often very limited.

+

To overcome such challenges, Reticulum’s Transport system uses asymmetric elliptic curve cryptography to +implement the concept of paths that allow discovery of how to get information closer to a certain +destination. It is important to note that no single node in a Reticulum network knows the complete +path to a destination. Every Transport node participating in a Reticulum network will only +know the most direct way to get a packet one hop closer to it’s destination.

+
+

Node Types#

+

Currently, Reticulum distinguishes between two types of network nodes. All nodes on a Reticulum network +are Reticulum Instances, and some are also Transport Nodes. If a system running Reticulum is fixed in +one place, and is intended to be kept available most of the time, it is a good contender to be a Transport Node.

+

Any Reticulum Instance can become a Transport Node by enabling it in the configuration. +This distinction is made by the user configuring the node, and is used to determine what nodes on the +network will help forward traffic, and what nodes rely on other nodes for wider connectivity.

+

If a node is an Instance it should be given the configuration directive enable_transport = No, which +is the default setting.

+

If it is a Transport Node, it should be given the configuration directive enable_transport = Yes.

+
+
+

The Announce Mechanism in Detail#

+

When an announce for a destination is transmitted by a Reticulum instance, it will be forwarded by +any transport node receiving it, but according to some specific rules:

+
    +
  • +
    If this exact announce has already been received before, ignore it.
    +
    +
  • +
  • +
    If not, record into a table which Transport Node the announce was received from, and how many times in +total it has been retransmitted to get here.
    +
    +
  • +
  • +
    If the announce has been retransmitted m+1 times, it will not be forwarded any more. By default, m is +set to 128.
    +
    +
  • +
  • +
    After a randomised delay, the announce will be retransmitted on all interfaces that have bandwidth +available for processing announces. By default, the maximum bandwidth allocation for processing +announces is set at 2%, but can be configured on a per-interface basis.
    +
    +
  • +
  • +
    If any given interface does not have enough bandwidth available for retransmitting the announce, +the announce will be assigned a priority inversely proportional to its hop count, and be inserted +into a queue managed by the interface.
    +
    +
  • +
  • +
    When the interface has bandwidth available for processing an announce, it will prioritise announces +for destinations that are closest in terms of hops, thus prioritising reachability and connectivity +of local nodes, even on slow networks that connect to wider and faster networks.
    +
    +
  • +
  • +
    After the announce has been re-transmitted, and if no other nodes are heard retransmitting the announce +with a greater hop count than when it left this node, transmitting it will be retried r times. By default, +r is set to 1.
    +
    +
  • +
  • +
    If a newer announce from the same destination arrives, while an identical one is already waiting +to be transmitted, the newest announce is discarded. If the newest announce contains different +application specific data, it will replace the old announce.
    +
    +
  • +
+

Once an announce has reached a node in the network, any other node in direct contact with that +node will be able to reach the destination the announce originated from, simply by sending a packet +addressed to that destination. Any node with knowledge of the announce will be able to direct the +packet towards the destination by looking up the next node with the shortest amount of hops to the +destination.

+

According to these rules, an announce will propagate throughout the network in a predictable way, +and make the announced destination reachable in a short amount of time. Fast networks that have the +capacity to process many announces can reach full convergence very quickly, even when constantly adding +new destinations. Slower segments of such networks might take a bit longer to gain full knowledge about +the wide and fast networks they are connected to, but can still do so over time, while prioritising full +and quickly converging end-to-end connectivity for their local, slower segments.

+

In general, even extremely complex networks, that utilize the maximum 128 hops will converge to full +end-to-end connectivity in about one minute, given there is enough bandwidth available to process +the required amount of announces.

+
+
+

Reaching the Destination#

+

In networks with changing topology and trustless connectivity, nodes need a way to establish +verified connectivity with each other. Since the network is assumed to be trustless, Reticulum +must provide a way to guarantee that the peer you are communicating with is actually who you +expect. Reticulum offers two ways to do this.

+

For exchanges of small amounts of information, Reticulum offers the Packet API, which works exactly like you would expect - on a per packet level. The following process is employed when sending a packet:

+
    +
  • +
    A packet is always created with an associated destination and some payload data. When the packet is sent +to a single destination type, Reticulum will automatically create an ephemeral encryption key, perform +an ECDH key exchange with the destination’s public key, and encrypt the information.
    +
    +
  • +
  • +
    It is important to note that this key exchange does not require any network traffic. The sender already +knows the public key of the destination from an earlier received announce, and can thus perform the ECDH +key exchange locally, before sending the packet.
    +
    +
  • +
  • +
    The public part of the newly generated ephemeral key-pair is included with the encrypted token, and sent +along with the encrypted payload data in the packet.
    +
    +
  • +
  • +
    When the destination receives the packet, it can itself perform an ECDH key exchange and decrypt the +packet.
    +
    +
  • +
  • +
    A new ephemeral key is used for every packet sent in this way.
    +
    +
  • +
  • +
    Once the packet has been received and decrypted by the addressed destination, that destination can opt +to prove its receipt of the packet. It does this by calculating the SHA-256 hash of the received packet, +and signing this hash with its Ed25519 signing key. Transport nodes in the network can then direct this +proof back to the packets origin, where the signature can be verified against the destination’s known +public signing key.
    +
    +
  • +
  • +
    In case the packet is addressed to a group destination type, the packet will be encrypted with the +pre-shared AES-128 key associated with the destination. In case the packet is addressed to a plain +destination type, the payload data will not be encrypted. Neither of these two destination types can offer +forward secrecy. In general, it is recommended to always use the single destination type, unless it is +strictly necessary to use one of the others.
    +
    +
  • +
+

For exchanges of larger amounts of data, or when longer sessions of bidirectional communication is desired, Reticulum offers the Link API. To establish a link, the following process is employed:

+
    +
  • +
    First, the node that wishes to establish a link will send out a special packet, that +traverses the network and locates the desired destination. Along the way, the Transport Nodes that +forward the packet will take note of this link request.
    +
    +
  • +
  • +
    Second, if the destination accepts the link request , it will send back a packet that proves the +authenticity of its identity (and the receipt of the link request) to the initiating node. All +nodes that initially forwarded the packet will also be able to verify this proof, and thus +accept the validity of the link throughout the network.
    +
    +
  • +
  • +
    When the validity of the link has been accepted by forwarding nodes, these nodes will +remember the link , and it can subsequently be used by referring to a hash representing it.
    +
    +
  • +
  • +
    As a part of the link request, an Elliptic Curve Diffie-Hellman key exchange takes place, that sets up an +efficiently encrypted tunnel between the two nodes. As such, this mode of communication is preferred, +even for situations when nodes can directly communicate, when the amount of data to be exchanged numbers +in the tens of packets, or whenever the use of the more advanced API functions is desired.
    +
    +
  • +
  • +
    When a link has been set up, it automatically provides message receipt functionality, through +the same proof mechanism discussed before, so the sending node can obtain verified confirmation +that the information reached the intended recipient.
    +
    +
  • +
  • +
    Once the link has been set up, the initiator can remain anonymous, or choose to authenticate towards +the destination using a Reticulum Identity. This authentication is happening inside the encrypted +link, and is only revealed to the verified destination, and no intermediaries.
    +
    +
  • +
+

In a moment, we will discuss the details of how this methodology is +implemented, but let’s first recap what purposes this methodology serves. We +first ensure that the node answering our request is actually the one we want to +communicate with, and not a malicious actor pretending to be so. At the same +time we establish an efficient encrypted channel. The setup of this is +relatively cheap in terms of bandwidth, so it can be used just for a short +exchange, and then recreated as needed, which will also rotate encryption keys. +The link can also be kept alive for longer periods of time, if this is more +suitable to the application. The procedure also inserts the link id , a hash +calculated from the link request packet, into the memory of forwarding nodes, +which means that the communicating nodes can thereafter reach each other simply +by referring to this link id.

+

The combined bandwidth cost of setting up a link is 3 packets totalling 297 bytes (more info in the +Binary Packet Format section). The amount of bandwidth used on keeping +a link open is practically negligible, at 0.45 bits per second. Even on a slow 1200 bits per second packet +radio channel, 100 concurrent links will still leave 96% channel capacity for actual data.

+ +
+
+

Resources#

+

For exchanging small amounts of data over a Reticulum network, the Packet interface +is sufficient, but for exchanging data that would require many packets, an efficient way to coordinate +the transfer is needed.

+

This is the purpose of the Reticulum Resource. A Resource can automatically +handle the reliable transfer of an arbitrary amount of data over an established Link. +Resources can auto-compress data, will handle breaking the data into individual packets, sequencing +the transfer, integrity verification and reassembling the data on the other end.

+

Resources are programmatically very simple to use, and only requires a few lines +of codes to reliably transfer any amount of data. They can be used to transfer data stored in memory, +or stream data directly from files.

+
+
+
+

Reference Setup#

+

This section will detail a recommended Reference Setup for Reticulum. It is important to +note that Reticulum is designed to be usable on more or less any computing device, and over more +or less any medium that allows you to send and receive data, which satisfies some very low +minimum requirements.

+

The communication channel must support at least half-duplex operation, and provide an average +throughput of around 500 bits per second, and supports a physical layer MTU of 500 bytes. The +Reticulum stack should be able to run on more or less any hardware that can provide a Python 3.x +runtime environment.

+

That being said, this reference setup has been outlined to provide a common platform for anyone +who wants to help in the development of Reticulum, and for everyone who wants to know a +recommended setup to get started experimenting. A reference system consists of three parts:

+
    +
  • +
    An Interface Device

    Which provides access to the physical medium whereupon the communication +takes place, for example a radio with an integrated modem. A setup with a separate modem +connected to a radio would also be an interface device.

    +
    +
    +
  • +
  • +
    A Host Device

    Some sort of computing device that can run the necessary software, communicate with the +interface device, and provide user interaction.

    +
    +
    +
  • +
  • +
    A Software Stack

    The software implementing the Reticulum protocol and applications using it.

    +
    +
    +
  • +
+

The reference setup can be considered a relatively stable platform to develop on, and also to start +building networks or applications on. While details of the implementation might change at the current stage of +development, it is the goal to maintain hardware compatibility for as long as entirely possible, and +the current reference setup has been determined to provide a functional platform for many years +into the future. The current Reference System Setup is as follows:

+
    +
  • +
    Interface Device

    A data radio consisting of a LoRa radio module, and a microcontroller with open source +firmware, that can connect to host devices via USB. It operates in either the 430, 868 or 900 +MHz frequency bands. More details can be found on the RNode Page.

    +
    +
    +
  • +
  • +
    Host Device

    Any computer device running Linux and Python. A Raspberry Pi with a Debian based OS is +recommended.

    +
    +
    +
  • +
  • +
    Software Stack

    The most recently released Python Implementation of Reticulum, running on a Debian based +operating system.

    +
    +
    +
  • +
+

To avoid confusion, it is very important to note, that the reference interface device does not +use the LoRaWAN standard, but uses a custom MAC layer on top of the plain LoRa modulation! As such, you will +need a plain LoRa radio module connected to an controller with the correct firmware. Full details on how to +get or make such a device is available on the RNode Page.

+

With the current reference setup, it should be possible to get on a Reticulum network for around 100$ +even if you have none of the hardware already, and need to purchase everything.

+

This reference setup is of course just a recommendation for getting started easily, and you should +tailor it to your own specific needs, or whatever hardware you have available.

+
+
+

Protocol Specifics#

+

This chapter will detail protocol specific information that is essential to the implementation of +Reticulum, but non critical in understanding how the protocol works on a general level. It should be +treated more as a reference than as essential reading.

+
+

Packet Prioritisation#

+

Currently, Reticulum is completely priority-agnostic regarding general traffic. All traffic is handled +on a first-come, first-serve basis. Announce re-transmission are handled according to the re-transmission +times and priorities described earlier in this chapter.

+
+
+

Interface Access Codes#

+

Reticulum can create named virtual networks, and networks that are only accessible by knowing a preshared +passphrase. The configuration of this is detailed in the Common Interface Options +section. To implement these feature, Reticulum uses the concept of Interface Access Codes, that are calculated +and verified per packet.

+

An interface with a named virtual network or passphrase authentication enabled will derive a shared Ed25519 +signing identity, and for every outbound packet generate a signature of the entire packet. This signature is +then inserted into the packet as an Interface Access Code before transmission. Depending on the speed and +capabilities of the interface, the IFAC can be the full 512-bit Ed25519 signature, or a truncated version. +Configured IFAC length can be inspected for all interfaces with the rnstatus utility.

+

Upon receipt, the interface will check that the signature matches the expected value, and drop the packet if it +does not. This ensures that only packets sent with the correct naming and/or passphrase parameters are allowed to +pass onto the network.

+
+
+

Wire Format#

+
== Reticulum Wire Format ======
+
+A Reticulum packet is composed of the following fields:
+
+[HEADER 2 bytes] [ADDRESSES 16/32 bytes] [CONTEXT 1 byte] [DATA 0-465 bytes]
+
+* The HEADER field is 2 bytes long.
+  * Byte 1: [IFAC Flag], [Header Type], [Propagation Type], [Destination Type] and [Packet Type]
+  * Byte 2: Number of hops
+
+* Interface Access Code field if the IFAC flag was set.
+  * The length of the Interface Access Code can vary from
+    1 to 64 bytes according to physical interface
+    capabilities and configuration.
+
+* The ADDRESSES field contains either 1 or 2 addresses.
+  * Each address is 16 bytes long.
+  * The Header Type flag in the HEADER field determines
+    whether the ADDRESSES field contains 1 or 2 addresses.
+  * Addresses are SHA-256 hashes truncated to 16 bytes.
+
+* The CONTEXT field is 1 byte.
+  * It is used by Reticulum to determine packet context.
+
+* The DATA field is between 0 and 465 bytes.
+  * It contains the packets data payload.
+
+IFAC Flag
+-----------------
+open             0  Packet for publically accessible interface
+authenticated    1  Interface authentication is included in packet
+
+
+Header Types
+-----------------
+type 1           0  Two byte header, one 16 byte address field
+type 2           1  Two byte header, two 16 byte address fields
+
+
+Propagation Types
+-----------------
+broadcast       00
+transport       01
+reserved        10
+reserved        11
+
+
+Destination Types
+-----------------
+single          00
+group           01
+plain           10
+link            11
+
+
+Packet Types
+-----------------
+data            00
+announce        01
+link request    10
+proof           11
+
+
++- Packet Example -+
+
+   HEADER FIELD           DESTINATION FIELDS            CONTEXT FIELD  DATA FIELD
+ _______|_______   ________________|________________   ________|______   __|_
+|               | |                                 | |               | |    |
+01010000 00000100 [HASH1, 16 bytes] [HASH2, 16 bytes] [CONTEXT, 1 byte] [DATA]
+|| | | |    |
+|| | | |    +-- Hops             = 4
+|| | | +------- Packet Type      = DATA
+|| | +--------- Destination Type = SINGLE
+|| +----------- Propagation Type = TRANSPORT
+|+------------- Header Type      = HEADER_2 (two byte header, two address fields)
++-------------- Access Codes     = DISABLED
+
+
++- Packet Example -+
+
+   HEADER FIELD   DESTINATION FIELD   CONTEXT FIELD  DATA FIELD
+ _______|_______   _______|_______   ________|______   __|_
+|               | |               | |               | |    |
+00000000 00000111 [HASH1, 16 bytes] [CONTEXT, 1 byte] [DATA]
+|| | | |    |
+|| | | |    +-- Hops             = 7
+|| | | +------- Packet Type      = DATA
+|| | +--------- Destination Type = SINGLE
+|| +----------- Propagation Type = BROADCAST
+|+------------- Header Type      = HEADER_1 (two byte header, one address field)
++-------------- Access Codes     = DISABLED
+
+
++- Packet Example -+
+
+   HEADER FIELD     IFAC FIELD    DESTINATION FIELD   CONTEXT FIELD  DATA FIELD
+ _______|_______   ______|______   _______|_______   ________|______   __|_
+|               | |             | |               | |               | |    |
+10000000 00000111 [IFAC, N bytes] [HASH1, 16 bytes] [CONTEXT, 1 byte] [DATA]
+|| | | |    |
+|| | | |    +-- Hops             = 7
+|| | | +------- Packet Type      = DATA
+|| | +--------- Destination Type = SINGLE
+|| +----------- Propagation Type = BROADCAST
+|+------------- Header Type      = HEADER_1 (two byte header, one address field)
++-------------- Access Codes     = ENABLED
+
+
+Size examples of different packet types
+---------------------------------------
+
+The following table lists example sizes of various
+packet types. The size listed are the complete on-
+wire size counting all fields including headers,
+but excluding any interface access codes.
+
+- Path Request    :    51  bytes
+- Announce        :    167 bytes
+- Link Request    :    83  bytes
+- Link Proof      :    115 bytes
+- Link RTT packet :    99  bytes
+- Link keepalive  :    20  bytes
+
+
+
+
+

Announce Propagation Rules#

+

The following table illustrates the rules for automatically propagating announces +from one interface type to another, for all possible combinations. For the purpose +of announce propagation, the Full and Gateway modes are identical.

+_images/if_mode_graph_b.png +

See the Interface Modes section for a conceptual overview +of the different interface modes, and how they are configured.

+
+
+

Cryptographic Primitives#

+

Reticulum has been designed to use a simple suite of efficient, strong and modern +cryptographic primitives, with widely available implementations that can be used +both on general-purpose CPUs and on microcontrollers. The necessary primitives are:

+
    +
  • Ed25519 for signatures

  • +
  • X25519 for ECDH key exchanges

  • +
  • HKDF for key derivation

  • +
  • Fernet for encrypted tokens

    +
      +
    • AES-128 in CBC mode

    • +
    • HMAC for message authentication

    • +
    +
  • +
  • SHA-256

  • +
  • SHA-512

  • +
+

In the default installation configuration, the X25519, Ed25519 and AES-128-CBC +primitives are provided by OpenSSL (via the PyCA/cryptography +package). The hashing functions SHA-256 and SHA-512 are provided by the standard +Python hashlib. The HKDF, HMAC, +Fernet primitives, and the PKCS7 padding function are always provided by the +following internal implementations:

+
    +
  • RNS/Cryptography/HKDF.py

  • +
  • RNS/Cryptography/HMAC.py

  • +
  • RNS/Cryptography/Fernet.py

  • +
  • RNS/Cryptography/PKCS7.py

  • +
+

Reticulum also includes a complete implementation of all necessary primitives in pure Python. +If OpenSSL & PyCA are not available on the system when Reticulum is started, Reticulum will +instead use the internal pure-python primitives. A trivial consequence of this is performance, +with the OpenSSL backend being much faster. The most important consequence however, is the +potential loss of security by using primitives that has not seen the same amount of scrutiny, +testing and review as those from OpenSSL.

+

If you want to use the internal pure-python primitives, it is highly advisable that you +have a good understanding of the risks that this pose, and make an informed decision on whether +those risks are acceptable to you.

+
+
+
+ +
+
+ +
+ +
+
+ + + + + + + + + + \ No newline at end of file diff --git a/build/manual/using.html b/build/manual/using.html new file mode 100644 index 0000000..563cc7a --- /dev/null +++ b/build/manual/using.html @@ -0,0 +1,825 @@ + + + + + + + + + Using Reticulum on Your System - Reticulum Network Stack 0.5.5 beta documentation + + + + + + + + + + + + + + + + + + Contents + + + + + + Menu + + + + + + + + Expand + + + + + + Light mode + + + + + + + + + + + + + + Dark mode + + + + + + + Auto light/dark mode + + + + + + + + + + + + + + + + + + + +
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+

Using Reticulum on Your System#

+

Reticulum is not installed as a driver or kernel module, as one might expect +of a networking stack. Instead, Reticulum is distributed as a Python module, +containing the networking core, and a set of utility and daemon programs.

+

This means that no special privileges are required to install or use it. It +is also very light-weight, and easy to transfer to, and install on new systems.

+

When you have Reticulum installed, any program or application that uses Reticulum +will automatically load and initialise Reticulum when it starts, if it is not +already running.

+

In many cases, this approach is sufficient. When any program needs to use +Reticulum, it is loaded, initialised, interfaces are brought up, and the +program can now communicate over any Reticulum networks available. If another +program starts up and also wants access to the same Reticulum network, the already +running instance is simply shared. This works for any number of programs running +concurrently, and is very easy to use, but depending on your use case, there +are other options.

+
+

Configuration & Data#

+

Reticulum stores all information that it needs to function in a single file-system +directory. When Reticulum is started, it will look for a valid configuration +directory in the following places:

+
    +
  • /etc/reticulum

  • +
  • ~/.config/reticulum

  • +
  • ~/.reticulum

  • +
+

If no existing configuration directory is found, the directory ~/.reticulum +is created, and the default configuration will be automatically created here. +You can move it to one of the other locations if you wish.

+

It is also possible to use completely arbitrary configuration directories by +specifying the relevant command-line parameters when running Reticulum-based +programs. You can also run multiple separate Reticulum instances on the same +physical system, either in isolation from each other, or connected together.

+

In most cases, a single physical system will only need to run one Reticulum +instance. This can either be launched at boot, as a system service, or simply +be brought up when a program needs it. In either case, any number of programs +running on the same system will automatically share the same Reticulum instance, +if the configuration allows for it, which it does by default.

+

The entire configuration of Reticulum is found in the ~/.reticulum/config +file. When Reticulum is first started on a new system, a basic, but fully functional +configuration file is created. The default configuration looks like this:

+
# This is the default Reticulum config file.
+# You should probably edit it to include any additional,
+# interfaces and settings you might need.
+
+# Only the most basic options are included in this default
+# configuration. To see a more verbose, and much longer,
+# configuration example, you can run the command:
+# rnsd --exampleconfig
+
+
+[reticulum]
+
+# If you enable Transport, your system will route traffic
+# for other peers, pass announces and serve path requests.
+# This should only be done for systems that are suited to
+# act as transport nodes, ie. if they are stationary and
+# always-on. This directive is optional and can be removed
+# for brevity.
+
+enable_transport = False
+
+
+# By default, the first program to launch the Reticulum
+# Network Stack will create a shared instance, that other
+# programs can communicate with. Only the shared instance
+# opens all the configured interfaces directly, and other
+# local programs communicate with the shared instance over
+# a local socket. This is completely transparent to the
+# user, and should generally be turned on. This directive
+# is optional and can be removed for brevity.
+
+share_instance = Yes
+
+
+# If you want to run multiple *different* shared instances
+# on the same system, you will need to specify different
+# shared instance ports for each. The defaults are given
+# below, and again, these options can be left out if you
+# don't need them.
+
+shared_instance_port = 37428
+instance_control_port = 37429
+
+
+# You can configure Reticulum to panic and forcibly close
+# if an unrecoverable interface error occurs, such as the
+# hardware device for an interface disappearing. This is
+# an optional directive, and can be left out for brevity.
+# This behaviour is disabled by default.
+
+panic_on_interface_error = No
+
+
+[logging]
+# Valid log levels are 0 through 7:
+#   0: Log only critical information
+#   1: Log errors and lower log levels
+#   2: Log warnings and lower log levels
+#   3: Log notices and lower log levels
+#   4: Log info and lower (this is the default)
+#   5: Verbose logging
+#   6: Debug logging
+#   7: Extreme logging
+
+loglevel = 4
+
+
+# The interfaces section defines the physical and virtual
+# interfaces Reticulum will use to communicate on. This
+# section will contain examples for a variety of interface
+# types. You can modify these or use them as a basis for
+# your own config, or simply remove the unused ones.
+
+[interfaces]
+
+  # This interface enables communication with other
+  # link-local Reticulum nodes over UDP. It does not
+  # need any functional IP infrastructure like routers
+  # or DHCP servers, but will require that at least link-
+  # local IPv6 is enabled in your operating system, which
+  # should be enabled by default in almost any OS. See
+  # the Reticulum Manual for more configuration options.
+
+  [[Default Interface]]
+    type = AutoInterface
+    interface_enabled = True
+
+
+

If Reticulum infrastructure already exists locally, you probably don’t need to +change anything, and you may already be connected to a wider network. If not, +you will probably need to add relevant interfaces to the configuration, in +order to communicate with other systems. It is a good idea to read the comments +and explanations in the above default config. It will teach you the basic +concepts you need to understand to configure your network. Once you have done that, +take a look at the Interfaces chapter of this manual.

+
+
+

Included Utility Programs#

+

Reticulum includes a range of useful utilities, both for managing your Reticulum +networks, and for carrying out common tasks over Reticulum networks, such as +transferring files to remote systems, and executing commands and programs remotely.

+

If you often use Reticulum from several different programs, or simply want +Reticulum to stay available all the time, for example if you are hosting +a transport node, you might want to run Reticulum as a separate service that +other programs, applications and services can utilise.

+
+

The rnsd Utility#

+

It is very easy to run Reticulum as a service. Simply run the included rnsd command. +When rnsd is running, it will keep all configured interfaces open, handle transport if +it is enabled, and allow any other programs to immediately utilise the +Reticulum network it is configured for.

+

You can even run multiple instances of rnsd with different configurations on +the same system.

+
# Install Reticulum
+pip3 install rns
+
+# Run rnsd
+rnsd
+
+
+
usage: rnsd [-h] [--config CONFIG] [-v] [-q] [--version]
+
+Reticulum Network Stack Daemon
+
+optional arguments:
+  -h, --help       show this help message and exit
+  --config CONFIG  path to alternative Reticulum config directory
+  -v, --verbose
+  -q, --quiet
+  --version        show program's version number and exit
+
+
+

You can easily add rnsd as an always-on service by configuring a service.

+
+
+

The rnstatus Utility#

+

Using the rnstatus utility, you can view the status of configured Reticulum +interfaces, similar to the ifconfig program.

+
# Run rnstatus
+rnstatus
+
+# Example output
+Shared Instance[37428]
+   Status  : Up
+   Serving : 1 program
+   Rate    : 1.00 Gbps
+   Traffic : 83.13 KB↑
+             86.10 KB↓
+
+AutoInterface[Local]
+   Status  : Up
+   Mode    : Full
+   Rate    : 10.00 Mbps
+   Peers   : 1 reachable
+   Traffic : 63.23 KB↑
+             80.17 KB↓
+
+TCPInterface[RNS Testnet Dublin/dublin.connect.reticulum.network:4965]
+   Status  : Up
+   Mode    : Full
+   Rate    : 10.00 Mbps
+   Traffic : 187.27 KB↑
+             74.17 KB↓
+
+RNodeInterface[RNode UHF]
+   Status  : Up
+   Mode    : Access Point
+   Rate    : 1.30 kbps
+   Access  : 64-bit IFAC by <…e702c42ba8>
+   Traffic : 8.49 KB↑
+             9.23 KB↓
+
+Reticulum Transport Instance <5245a8efe1788c6a1cd36144a270e13b> running
+
+
+
usage: rnstatus [-h] [--config CONFIG] [--version] [-a] [-v]
+
+Reticulum Network Stack Status
+
+optional arguments:
+  -h, --help       show this help message and exit
+  --config CONFIG  path to alternative Reticulum config directory
+  --version        show program's version number and exit
+  -a, --all        show all interfaces
+  -v, --verbose
+
+
+
+
+

The rnpath Utility#

+

With the rnpath utility, you can look up and view paths for +destinations on the Reticulum network.

+
# Run rnpath
+rnpath c89b4da064bf66d280f0e4d8abfd9806
+
+# Example output
+Path found, destination <c89b4da064bf66d280f0e4d8abfd9806> is 4 hops away via <f53a1c4278e0726bb73fcc623d6ce763> on TCPInterface[Testnet/dublin.connect.reticulum.network:4965]
+
+
+
usage: rnpath [-h] [--config CONFIG] [--version] [-t] [-r] [-d] [-D] [-w seconds] [-v] [destination]
+
+Reticulum Path Discovery Utility
+
+positional arguments:
+  destination           hexadecimal hash of the destination
+
+optional arguments:
+  -h, --help            show this help message and exit
+  --config CONFIG       path to alternative Reticulum config directory
+  --version             show program's version number and exit
+  -t, --table           show all known paths
+  -r, --rates           show announce rate info
+  -d, --drop            remove the path to a destination
+  -D, --drop-announces  drop all queued announces
+  -w seconds            timeout before giving up
+  -v, --verbose
+
+
+
+
+

The rnprobe Utility#

+

The rnprobe utility lets you probe a destination for connectivity, similar +to the ping program. Please note that probes will only be answered if the +specified destination is configured to send proofs for received packets. Many +destinations will not have this option enabled, and will not be probable.

+
# Run rnprobe
+rnprobe example_utilities.echo.request 2d03725b327348980d570f739a3a5708
+
+# Example output
+Sent 16 byte probe to <2d03725b327348980d570f739a3a5708>
+Valid reply received from <2d03725b327348980d570f739a3a5708>
+Round-trip time is 38.469 milliseconds over 2 hops
+
+
+
usage: rnprobe [-h] [--config CONFIG] [--version] [-v] [full_name] [destination_hash]
+
+Reticulum Probe Utility
+
+positional arguments:
+  full_name         full destination name in dotted notation
+  destination_hash  hexadecimal hash of the destination
+
+optional arguments:
+  -h, --help        show this help message and exit
+  --config CONFIG   path to alternative Reticulum config directory
+  --version         show program's version number and exit
+  -v, --verbose
+
+
+
+
+

The rncp Utility#

+

The rncp utility is a simple file transfer tool. Using it, you can transfer +files through Reticulum.

+
# Run rncp on the receiving system, specifying which identities
+# are allowed to send files
+rncp --receive -a 1726dbad538775b5bf9b0ea25a4079c8 -a c50cc4e4f7838b6c31f60ab9032cbc62
+
+# From another system, copy a file to the receiving system
+rncp ~/path/to/file.tgz 73cbd378bb0286ed11a707c13447bb1e
+
+
+

You can specify as many allowed senders as needed, or complete disable authentication.

+
usage: rncp [-h] [--config path] [-v] [-q] [-p] [-r] [-b] [-a allowed_hash] [-n] [-w seconds] [--version] [file] [destination]
+
+Reticulum File Transfer Utility
+
+positional arguments:
+  file                  file to be transferred
+  destination           hexadecimal hash of the receiver
+
+optional arguments:
+  -h, --help            show this help message and exit
+  --config path         path to alternative Reticulum config directory
+  -v, --verbose         increase verbosity
+  -q, --quiet           decrease verbosity
+  -p, --print-identity  print identity and destination info and exit
+  -r, --receive         wait for incoming files
+  -b, --no-announce     don't announce at program start
+  -a allowed_hash       accept from this identity
+  -n, --no-auth         accept files from anyone
+  -w seconds            sender timeout before giving up
+  --version             show program's version number and exit
+  -v, --verbose
+
+
+
+
+

The rnx Utility#

+

The rnx utility is a basic remote command execution program. It allows you to +execute commands on remote systems over Reticulum, and to view returned command +output.

+
# Run rnx on the listening system, specifying which identities
+# are allowed to execute commands
+rnx --listen -a 941bed5e228775e5a8079fc38b1ccf3f -a 1b03013c25f1c2ca068a4f080b844a10
+
+# From another system, run a command
+rnx 7a55144adf826958a9529a3bcf08b149 "cat /proc/cpuinfo"
+
+# Or enter the interactive mode pseudo-shell
+rnx 7a55144adf826958a9529a3bcf08b149 -x
+
+# The default identity file is stored in
+# ~/.reticulum/identities/rnx, but you can use
+# another one, which will be created if it does
+# not already exist
+rnx 7a55144adf826958a9529a3bcf08b149 -i /path/to/identity -x
+
+
+

You can specify as many allowed senders as needed, or completely disable authentication.

+
usage: rnx [-h] [--config path] [-v] [-q] [-p] [-l] [-i identity] [-x] [-b] [-a allowed_hash] [-n] [-N] [-d] [-m] [-w seconds] [-W seconds] [--stdin STDIN] [--stdout STDOUT] [--stderr STDERR] [--version]
+           [destination] [command]
+
+Reticulum Remote Execution Utility
+
+positional arguments:
+  destination           hexadecimal hash of the listener
+  command               command to be execute
+
+optional arguments:
+  -h, --help            show this help message and exit
+  --config path         path to alternative Reticulum config directory
+  -v, --verbose         increase verbosity
+  -q, --quiet           decrease verbosity
+  -p, --print-identity  print identity and destination info and exit
+  -l, --listen          listen for incoming commands
+  -i identity           path to identity to use
+  -x, --interactive     enter interactive mode
+  -b, --no-announce     don't announce at program start
+  -a allowed_hash       accept from this identity
+  -n, --noauth          accept files from anyone
+  -N, --noid            don't identify to listener
+  -d, --detailed        show detailed result output
+  -m                    mirror exit code of remote command
+  -w seconds            connect and request timeout before giving up
+  -W seconds            max result download time
+  --stdin STDIN         pass input to stdin
+  --stdout STDOUT       max size in bytes of returned stdout
+  --stderr STDERR       max size in bytes of returned stderr
+  --version             show program's version number and exit
+
+
+
+
+

The rnodeconf Utility#

+

The rnodeconf utility allows you to inspect and configure existing RNodes, and +to create and provision new RNodes from any supported hardware devices.

+
usage: rnodeconf [-h] [-i] [-a] [-u] [-U] [--fw-version version] [--nocheck] [-C] [-N] [-T] [-b] [-B] [-p] [--freq Hz] [--bw Hz] [--txp dBm] [--sf factor] [--cr rate] [--eeprom-backup] [--eeprom-dump] [--eeprom-wipe] [--version] [port]
+
+RNode Configuration and firmware utility. This program allows you to change various settings and startup modes of RNode. It can also install, flash and update the firmware on supported devices.
+
+positional arguments:
+  port                  serial port where RNode is attached
+
+options:
+  -h, --help            show this help message and exit
+  -i, --info            Show device info
+  -a, --autoinstall     Automatic installation on various supported devices
+  -u, --update          Update firmware to the latest version
+  -U, --force-update    Update to specified firmware even if version matches or is older than installed version
+  --fw-version version  Use a specific firmware version for update or autoinstall
+  --nocheck             Don't check for firmware updates online
+  -e, --extract         Extract firmware from connected RNode for later use
+  -E, --use-extracted   Use the extracted firmware for autoinstallation or update
+  -C, --clear-cache     Clear locally cached firmware files
+  -N, --normal          Switch device to normal mode
+  -T, --tnc             Switch device to TNC mode
+  -b, --bluetooth-on    Turn device bluetooth on
+  -B, --bluetooth-off   Turn device bluetooth off
+  -p, --bluetooth-pair  Put device into bluetooth pairing mode
+  --freq Hz             Frequency in Hz for TNC mode
+  --bw Hz               Bandwidth in Hz for TNC mode
+  --txp dBm             TX power in dBm for TNC mode
+  --sf factor           Spreading factor for TNC mode (7 - 12)
+  --cr rate             Coding rate for TNC mode (5 - 8)
+  --eeprom-backup       Backup EEPROM to file
+  --eeprom-dump         Dump EEPROM to console
+  --eeprom-wipe         Unlock and wipe EEPROM
+  --version             Print program version and exit
+
+
+

For more information on how to create your own RNodes, please read the Creating RNodes +section of this manual.

+
+
+
+

Improving System Configuration#

+

If you are setting up a system for permanent use with Reticulum, there is a +few system configuration changes that can make this easier to administrate. +These changes will be detailed here.

+
+

Fixed Serial Port Names#

+

On a Reticulum instance with several serial port based interfaces, it can be +beneficial to use the fixed device names for the serial ports, instead +of the dynamically allocated shorthands such as /dev/ttyUSB0. Under most +Debian-based distributions, including Ubuntu and Raspberry Pi OS, these nodes +can be found under /dev/serial/by-id.

+

You can use such a device path directly in place of the numbered shorthands. +Here is an example of a packet radio TNC configured as such:

+
[[Packet Radio KISS Interface]]
+  type = KISSInterface
+  interface_enabled = True
+  outgoing = true
+  port = /dev/serial/by-id/usb-FTDI_FT230X_Basic_UART_43891CKM-if00-port0
+  speed = 115200
+  databits = 8
+  parity = none
+  stopbits = 1
+  preamble = 150
+  txtail = 10
+  persistence = 200
+  slottime = 20
+
+
+

Using this methodology avoids potential naming mix-ups where physical devices +might be plugged and unplugged in different orders, or when device name +assignment varies from one boot to another.

+
+
+

Reticulum as a System Service#

+

Instead of starting Reticulum manually, you can install rnsd as a system +service and have it start automatically at boot.

+

If you installed Reticulum with pip, the rnsd program will most likely +be located in a user-local installation path only, which means systemd will not +be able to execute it. In this case, you can simply symlink the rnsd program +into a directory that is in systemd’s path:

+
sudo ln -s $(which rnsd) /usr/local/bin/
+
+
+

You can then create the service file /etc/systemd/system/rnsd.service with the +following content:

+
[Unit]
+Description=Reticulum Network Stack Daemon
+After=multi-user.target
+
+[Service]
+# If you run Reticulum on WiFi devices,
+# or other devices that need some extra
+# time to initialise, you might want to
+# add a short delay before Reticulum is
+# started by systemd:
+# ExecStartPre=/bin/sleep 10
+Type=simple
+Restart=always
+RestartSec=3
+User=USERNAMEHERE
+ExecStart=rnsd --service
+
+[Install]
+WantedBy=multi-user.target
+
+
+

Be sure to replace USERNAMEHERE with the user you want to run rnsd as.

+

To manually start rnsd run:

+
sudo systemctl start rnsd
+
+
+

If you want to automatically start rnsd at boot, run:

+
sudo systemctl enable rnsd
+
+
+
+
+
+ +
+
+ +
+ +
+
+ + + + + + + + + + \ No newline at end of file diff --git a/build/manual/whatis.html b/build/manual/whatis.html new file mode 100644 index 0000000..9d919ac --- /dev/null +++ b/build/manual/whatis.html @@ -0,0 +1,447 @@ + + + + + + + + + What is Reticulum? - Reticulum Network Stack 0.5.5 beta documentation + + + + + + + + + + + + + + + + + + Contents + + + + + + Menu + + + + + + + + Expand + + + + + + Light mode + + + + + + + + + + + + + + Dark mode + + + + + + + Auto light/dark mode + + + + + + + + + + + + + + + + + + + +
+
+
+ +
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+
+ +
+ +
+
+ +
+
+
+ + + + + Back to top + +
+
+ +
+ +
+
+
+

What is Reticulum?#

+

Reticulum is a cryptography-based networking stack for building both local and +wide-area networks with readily available hardware, that can continue to operate +under adverse conditions, such as extremely low bandwidth and very high latency.

+

Reticulum allows you to build wide-area networks with off-the-shelf tools, and +offers end-to-end encryption, forward secrecy, autoconfiguring cryptographically +backed multi-hop transport, efficient addressing, unforgeable packet +acknowledgements and more.

+

From a users perspective, Reticulum allows the creation of applications that +respect and empower the autonomy and sovereignty of communities and individuals. +Reticulum enables secure digital communication that cannot be subjected to +outside control, manipulation or censorship.

+

Reticulum enables the construction of both small and potentially planetary-scale +networks, without any need for hierarchical or beaureucratic structures to control +or manage them, while ensuring individuals and communities full sovereignty +over their own network segments.

+

Reticulum is a complete networking stack, and does not need IP or higher +layers, although it is easy to utilise IP (with TCP or UDP) as the underlying +carrier for Reticulum. It is therefore trivial to tunnel Reticulum over the +Internet or private IP networks. Reticulum is built directly on cryptographic +principles, allowing resilience and stable functionality in open and trustless +networks.

+

No kernel modules or drivers are required. Reticulum runs completely in +userland, and can run on practically any system that runs Python 3. Reticulum +runs well even on small single-board computers like the Pi Zero.

+
+

Current Status#

+

Please know! Reticulum should currently be considered beta software. All core protocol +features are implemented and functioning, but additions will probably occur as +real-world use is explored. There will be bugs. The API and wire-format can be +considered stable at the moment, but could change if absolutely warranted.

+
+
+

What does Reticulum Offer?#

+
    +
  • Coordination-less globally unique addressing and identification

  • +
  • Fully self-configuring multi-hop routing

  • +
  • Complete initiator anonymity, communicate without revealing your identity

  • +
  • Asymmetric encryption based on X25519, and Ed25519 signatures as a basis for all communication

  • +
  • Forward Secrecy by using ephemeral Elliptic Curve Diffie-Hellman keys on Curve25519

  • +
  • Reticulum uses the Fernet specification for on-the-wire / over-the-air encryption

    +
      +
    • All keys are ephemeral and derived from an ECDH key exchange on Curve25519

    • +
    • AES-128 in CBC mode with PKCS7 padding

    • +
    • HMAC using SHA256 for authentication

    • +
    • IVs are generated through os.urandom()

    • +
    +
  • +
  • Unforgeable packet delivery confirmations

  • +
  • A variety of supported interface types

  • +
  • An intuitive and developer-friendly API

  • +
  • Efficient link establishment

    +
      +
    • Total bandwidth cost of setting up a link is only 3 packets, totalling 297 bytes

    • +
    • Low cost of keeping links open at only 0.44 bits per second

    • +
    +
  • +
  • Reliable and efficient transfer of arbitrary amounts of data

    +
      +
    • Reticulum can handle a few bytes of data or files of many gigabytes

    • +
    • Sequencing, transfer coordination and checksumming is automatic

    • +
    • The API is very easy to use, and provides transfer progress

    • +
    +
  • +
  • Authentication and virtual network segmentation on all supported interface types

  • +
  • Flexible scalability allowing extremely low-bandwidth networks to co-exist and interoperate with large, high-bandwidth networks

  • +
+
+
+

Where can Reticulum be Used?#

+

Over practically any medium that can support at least a half-duplex channel +with 500 bits per second throughput, and an MTU of 500 bytes. Data radios, +modems, LoRa radios, serial lines, AX.25 TNCs, amateur radio digital modes, +ad-hoc WiFi, free-space optical links and similar systems are all examples +of the types of interfaces Reticulum was designed for.

+

An open-source LoRa-based interface called RNode +has been designed as an example transceiver that is very suitable for +Reticulum. It is possible to build it yourself, to transform a common LoRa +development board into one, or it can be purchased as a complete transceiver.

+

Reticulum can also be encapsulated over existing IP networks, so there’s +nothing stopping you from using it over wired Ethernet or your local WiFi +network, where it’ll work just as well. In fact, one of the strengths of +Reticulum is how easily it allows you to connect different mediums into a +self-configuring, resilient and encrypted mesh.

+

As an example, it’s possible to set up a Raspberry Pi connected to both a +LoRa radio, a packet radio TNC and a WiFi network. Once the interfaces are +added, Reticulum will take care of the rest, and any device on the WiFi +network can communicate with nodes on the LoRa and packet radio sides of the +network, and vice versa.

+
+
+

Interface Types and Devices#

+

Reticulum implements a range of generalised interface types that covers the communications hardware that Reticulum can run over. If your hardware is not supported, it’s relatively simple to implement an interface class. Currently, Reticulum can use the following devices and communication mediums:

+
    +
  • Any Ethernet device

    +
      +
    • WiFi devices

    • +
    • Wired Ethernet devices

    • +
    • Fibre-optic transceivers

    • +
    • Data radios with Ethernet ports

    • +
    +
  • +
  • LoRa using RNode

    + +
  • +
  • Packet Radio TNCs, such as OpenModem

    +
      +
    • Any packet radio TNC in KISS mode

    • +
    • Ideal for VHF and UHF radio

    • +
    +
  • +
  • Any device with a serial port

  • +
  • The I2P network

  • +
  • TCP over IP networks

  • +
  • UDP over IP networks

  • +
  • Anything you can connect via stdio

    +
      +
    • Reticulum can use external programs and pipes as interfaces

    • +
    • This can be used to easily hack in virtual interfaces

    • +
    • Or to quickly create interfaces with custom hardware

    • +
    +
  • +
+

For a full list and more details, see the Supported Interfaces chapter.

+
+
+

Caveat Emptor#

+

Reticulum is an experimental networking stack, and should be considered as +such. While it has been built with cryptography best-practices very foremost in +mind, it has not yet been externally security audited, and there could very well be +privacy-breaking bugs. To be considered secure, Reticulum needs a thorough +security review by independent cryptographers and security researchers. If you +want to help out with this, or can help sponsor an audit, please do get in touch.

+
+
+ +
+
+ +
+ +
+
+ + + + + + + + + + \ No newline at end of file diff --git a/build/start.html b/build/start.html new file mode 100644 index 0000000..8e0564a --- /dev/null +++ b/build/start.html @@ -0,0 +1,65 @@ + + + + + + +Reticulum Network + + + +

+

Get Started

+

The best way to get started with the Reticulum Network Stack depends on what +you want to do. For full details and examples, have a look at the Getting Started Fast section of the Reticulum Manual.

+

Experimental Software

+

Please Know! Reticulum is still in beta. This means, that while it already works very well, and is very stable, there could very well still be critical bugs or flaws in the behaviour, privacy or security of the system as a whole. Use Reticulum if you are comfortable with this, and understand the implications.

+

Community & Support

+

If you are having trouble, or if something is not working, here are some great places to ask for help:

+ +

Installation

+

To install Reticulum and related utilities on your system, the easiest way is via pip:

+
pip install rns
+
+

You can then start any program that uses Reticulum, or start Reticulum as a system service with the rnsd utility.

+

If pip is not available on your system, install the python3 and python3-pip packages for your OS first.

+

When first started, Reticulum will create a default configuration file, providing basic connectivity to other Reticulum peers that might be locally reachable. If any of those local peers are Transport Instances, these might connect you to wider networks. The default config file contains a few examples, and references for creating a more complex configuration.

+

For more detailed examples on how to expand communication over many mediums such as packet radio or LoRa, serial ports, or over fast IP links and the Internet using the UDP and TCP interfaces, take a look at the Supported Interfaces section of the Reticulum Manual.

+

Included Utilities

+

Reticulum includes a range of useful utilities for managing your networks, viewing status and information, and other tasks. You can read more about these programs in the Included Utility Programs section of the Reticulum Manual.

+
    +
  • The system daemon rnsd for running Reticulum as an always-available service
  • +
  • An interface status utility called rnstatus, that displays information about interfaces
  • +
  • The path lookup and and management tool rnpath letting you view and modify path tables
  • +
  • A diagnostics tool called rnprobe for checking connectivity to destinations
  • +
  • A simple file transfer program called rncp making it easy to copy files to remote systems
  • +
  • The remote command execution program rnx that let's you run commands and programs and retrieve output from remote systems
  • +
+

All tools, including rnx and rncp, work reliably and well even over very low-bandwidth links like LoRa or Packet Radio.

+

Programs Using Reticulum

+

If you want to quickly get an idea of what Reticulum can do, take a look at the following resources.

+
    +
  • For an off-grid, encrypted and resilient mesh communications platform, see Nomad Network
  • +
  • The Android, Linux and macOS app Sideband has a graphical interface and focuses on ease of use.
  • +
  • LXMF is a distributed, delay and disruption tolerant message transfer protocol built on Reticulum
  • +
+

Dependencies

+

The installation of the default rns package requires the dependencies listed below. Almost all systems and distributions have readily available packages for these dependencies, and when the rns package is installed with pip, they will be downloaded and installed as well.

+ +

On more unusual systems, and in some rare cases, it might not be possible to install or even compile one or more of the above modules. In such situations, you can use the rnspure package instead, which require no external dependencies for installation. Please note that the contents of the rns and rnspure packages are identical. The only difference is that the rnspure package lists no dependencies required for installation.

+

No matter how Reticulum is installed and started, it will load external dependencies only if they are needed and available. If for example you want to use Reticulum on a system that cannot support pyserial, it is perfectly possible to do so using the rnspure package, but Reticulum will not be able to use serial-based interfaces. All other available modules will still be loaded when needed.

+

Please Note! If you use the rnspure package to run Reticulum on systems that do not support PyCA/cryptography, it is important that you read and understand the Cryptographic Primitives section of this site.

+

Performance

+

Reticulum targets a very wide usable performance envelope, but prioritises functionality and performance over low-bandwidth mediums. The goal is to provide a dynamic performance envelope from 250 bits per second, to 1 gigabit per second on normal hardware.

+

Currently, the usable performance envelope is approximately 500 bits per second to 20 megabits per second, with physical mediums faster than that not being saturated. Performance beyond the current level is intended for future upgrades, but not highly prioritised until the wire format and API has been locked in.

+

Next Topic: Supported Hardware

+ + diff --git a/build/start_de.html b/build/start_de.html new file mode 100644 index 0000000..6e2a23f --- /dev/null +++ b/build/start_de.html @@ -0,0 +1,65 @@ + + + + + + +Reticulum Network + + + +

+

Los geht's

+

Wie Sie am besten mit dem Reticulum Network Stack beginnen, hängt davon ab, was +Sie durchführen möchten. Ausführliche Informationen und Beispiele finden Sie im Abschnitt Schneller Einstieg des Reticulum-Handbuchs.

+

Experimentelle Software

+

Bitte beachten Sie! Reticulum befindet sich noch im Beta-Stadium. Das bedeutet, dass es zwar bereits sehr gut funktioniert und sehr stabil ist, es aber durchaus noch kritische Fehler oder Schwachstellen im Verhalten, im Datenschutz oder in der Sicherheit des gesamten Systems geben kann. Verwenden Sie Reticulum nur, wenn Sie damit einverstanden sind und die Auswirkungen verstehen.

+

Gemeinschaft & Unterstützung

+

Wenn Sie Probleme haben oder etwas nicht funktioniert, finden Sie hier einige gute Stellen, an denen Sie um Hilfe bitten können:

+ +

Installation

+

Der einfachste Weg, Reticulum und zugehörige Dienstprogramme auf Ihrem System zu installieren, ist über pip:

+
pip install rns
+
+

Sie können dann jedes Programm starten, das Reticulum verwendet, oder Reticulum als Systemdienst starten mit [dem Dienstprogramm rnsd] .(manual/using.html#the-rnsd-utility).

+

Wenn pip auf Ihrem System nicht verfügbar ist, installieren Sie zuerst die Pakete python3 und python3-pip für Ihr Betriebssystem.

+

Beim ersten Start erstellt Reticulum eine Standardkonfigurationsdatei, die eine grundlegende Konnektivität zu anderen Reticulum-Peers herstellt, die lokal erreichbar sein könnten. Wenn es sich bei einem dieser lokalen Peers um eine Transportinstanz handelt, können Sie über diese eine Verbindung zu einem größeren Netzwerk herstellen. Die Standardkonfigurationsdatei enthält einige Beispiele und Referenzen für die Erstellung einer komplexeren Konfiguration.

+

Ausführlichere Beispiele für die Erweiterung der Kommunikation über verschiedene Medien wie Packet Radio oder LoRa, serielle Schnittstellen oder über schnelle IP-Verbindungen und das Internet unter Verwendung der UDP- und TCP-Schnittstellen finden Sie im Abschnitt Unterstützte Schnittstellen im Reticulum Handbuch.

+

Enthaltene Dienstprogramme

+

Reticulum enthält eine Reihe nützlicher Hilfsprogramme zur Verwaltung Ihrer Netzwerke, zur Anzeige von Status und Informationen und für andere Aufgaben. Weitere Informationen zu diesen Programmen finden Sie im Abschnitt Enthaltene Dienstprogramme im Reticulum Handbuch.

+
    +
  • Der System-Daemon rnsd für den Betrieb von Reticulum als immer verfügbarer Dienst
  • +
  • Ein Dienstprogramm für den Schnittstellenstatus namens rnstatus, das Informationen über Schnittstellen anzeigt
  • +
  • Das Werkzeug rnpath zum Nachschlagen und Verwalten von Pfaden, mit dem Sie Pfad-Tabellen anzeigen und ändern können
  • +
  • Ein Diagnosewerkzeug namens rnprobe zur Überprüfung der Konnektivität zu Zielen
  • +
  • Ein einfaches Dateiübertragungsprogramm namens rncp, das das Kopieren von Dateien auf entfernte Systeme erleichtert
  • +
  • Das Programm rnx zur Ausführung von Fernbefehlen, mit dem Sie Befehle und Programme ausführen und Ausgaben von entfernten Systemen abrufen können
  • +
+

Alle Tools, einschließlich rnx und rncp, arbeiten zuverlässig und gut auch über Verbindungen mit sehr geringer Bandbreite wie LoRa oder Packet Radio.

+

Programme welche Reticulum verwenden

+

Wenn Sie sich schnell einen Überblick über die Möglichkeiten von Reticulum verschaffen möchten, werfen Sie einen Blick auf die folgenden Ressourcen.

+
    +
  • Eine netzunabhängige, verschlüsselte und widerstandsfähige Mesh-Kommunikationsplattform finden Sie unter Nomad Network
  • +
  • Die Android-, Linux- und macOS-Anwendung Sideband verfügt über eine grafische Oberfläche und legt den Schwerpunkt auf Benutzerfreundlichkeit.
  • +
  • LXMF ist ein verteiltes, verzögerungs- und unterbrechungstolerantes Nachrichtenübertragungsprotokoll, das auf Reticulum aufbaut.
  • +
+

Abhängigkeiten

+

Die Installation des Standardpakets rns erfordert die unten aufgeführten Abhängigkeiten. Fast alle Systeme und Distributionen haben leicht verfügbare Pakete für diese Abhängigkeiten, und wenn das rns-Paket mit pip installiert wird, werden sie ebenfalls heruntergeladen und installiert.

+ +

Auf ungewöhnlicheren Systemen und in einigen seltenen Fällen ist es möglicherweise nicht möglich, eines oder mehrere der oben genannten Module zu installieren oder gar zu kompilieren. In solchen Situationen können Sie stattdessen das Paket rnspure verwenden, das keine externen Abhängigkeiten für die Installation benötigt. Bitte beachten Sie, dass der Inhalt der Pakete rns und rnspure identisch ist. Der einzige Unterschied besteht darin, dass das Paket rnspure keine Abhängigkeiten auflistet, die für die Installation erforderlich sind.

+

Unabhängig davon, wie Reticulum installiert und gestartet wird, lädt es externe Abhängigkeiten nur, wenn sie benötigt und verfügbar sind. Wenn Sie Reticulum beispielsweise auf einem System verwenden möchten, das pyserial nicht unterstützt, ist es durchaus möglich, das Paket rnspure zu verwenden, aber Reticulum kann dann keine seriell basierten Schnittstellen nutzen. Alle anderen verfügbaren Module werden bei Bedarf weiterhin geladen.

+

Bitte beachten Sie! Wenn Sie das Paket rnspure verwenden, um Reticulum auf Systemen zu betreiben, die PyCA/cryptography nicht unterstützen, ist es wichtig, dass Sie den Abschnitt Kryptographische Primitiven auf dieser Website lesen und verstehen.

+

Leistung

+

Reticulum zielt auf einen sehr großen nutzbaren Leistungsbereich ab, gibt aber der Funktionalität und Leistung Vorrang auf Medien mit geringer Bandbreite. Ziel ist es, einen dynamischen Leistungsbereich von 250 Bit pro Sekunde bis zu 1 Gigabit pro Sekunde auf normaler Hardware bereitzustellen.

+

Derzeit liegt der nutzbare Leistungsbereich bei etwa 500 Bit pro Sekunde bis 20 Megabit pro Sekunde, wobei schnellere physische Medien nicht gesättigt sind. Eine über das derzeitige Niveau hinausgehende Leistung ist für künftige Upgrades vorgesehen, hat aber keine hohe Priorität, solange das Leitungsformat und die API noch nicht festgelegt sind.

+

Nächstes Thema: Unterstützte Hardware

+ + diff --git a/build/start_pl.html b/build/start_pl.html new file mode 100644 index 0000000..5507753 --- /dev/null +++ b/build/start_pl.html @@ -0,0 +1,65 @@ + + + + + + +Reticulum Network + + + +

+

Jak zacząć

+

Najlepszy sposób na rozpoczęcie pracy z Reticulum Network Stack zależy od tego, co +co chcesz zrobić. Aby uzyskać pełne szczegóły i przykłady, sprawdź rodział Jak szybko zacząć w Podręczniku Reticulum.

+

Eksperymentalne Oprogramowanie

+

Proszę Pamiętaj! Reticulum jest wciąż w fazie beta. Oznacza to, że choć działa bardzo dobrze i jest bardzo stabilne, to nadal mogą istnieć krytyczne błędy lub wady w zachowaniu, prywatności lub bezpieczeństwie całego systemu. Używaj Reticulum, jeśli czujesz się z tym komfortowo i rozumiesz konsekwencje.

+

Społeczność & Wsparcie

+

Jeśli masz problemy lub coś nie działa, oto kilka świetnych miejsc, w których możesz poprosić o pomoc:

+ +

Instalacja

+

Najprostszym sposobem, żeby zainstalować Reticulum i powiązane narzędzia jest przy wykorzystanie pip:

+
pip install rns
+
+

Możesz wtedy uruchomić każdy program, który używa Reticulum, lub uruchomić Reticulum jako usługę systemową za pomocą narzędzia rnsd.

+

Jeśli pip nie jest dostępny na twoim systemie, zainstaluj najpierw pakiety python3 i python3-pip dla swojego systemu operacyjnego.

+

Przy pierwszym uruchomieniu Reticulum tworzy domyślny plik konfiguracyjny, zapewniający podstawową łączność z innymi serwerami Reticulum, które mogą być osiągalne lokalnie. Jeśli któryś z tych lokalnych peerów jest Instancją Transportową, może on połączyć Ciebie z większymi sieciami. Domyślny plik konfiguracyjny zawiera kilka przykładów oraz referencje do tworzenia bardziej złożonych konfiguracji.

+

W celu uzyskania bardziej szczegółowych przykładów dotyczących rozszerzenia komunikacji za pomocą wielu mediów, takich jak packet radio lub LoRa, porty szeregowe lub za pomocą szybkich łączy IP i Internetu przy użyciu interfejsów UDP i TCP, sprawdź sekcję Wspierane Interfejsy w Podręczniku Reticulum.

+

Zawarte Narzędzia

+

Reticulum zawiera szereg przydatnych narzędzi do zarządzania sieciami, przeglądania stanu i informacji oraz innych zadań. You can read more about these programs in the Możesz przeczytać więcej o tych programach w sekcji Zawarte Programy Użytkowe w Podręczniku Reticulum.

+
    +
  • Demon systemowy rnsd do uruchamiania Reticulum jako zawsze dostępnej usługi
  • +
  • Narzędzie statusu interfejsu o nazwie rnstatus, które wyświetla informacje o interfejsach
  • +
  • Narzędzie do wyszukiwania i zarządzania ścieżkami rnpath pozwalające na przeglądanie i modyfikowanie tablic ścieżek
  • +
  • Narzędzie diagnostyczne o nazwie rnprobe do sprawdzania łączności z miejscami docelowymi
  • +
  • Prosty program do transferu plików o nazwie rncp ułatwiający kopiowanie plików na zdalne systemy
  • +
  • Program do zdalnego wykonywania poleceń rnx, który pozwala uruchamiać polecenia i programy oraz pobierać dane wyjściowe ze zdalnych systemów
  • +
+

Wszystkie narzędzia, w tym rnx i rncp, działają niezawodnie i dobrze nawet na łączach o bardzo niskiej przepustowości, takich jak LoRa czy Packet Radio.

+

Programy Używające Reticulum

+

Jeśli chcesz szybko zorientować się, co potrafi Reticulum, zapoznaj się z poniższymi materiałami.

+
    +
  • Dla pozasieciowej, szyfrowanej i odpornej platformy komunikacyjnej typu mesh, zobacz Nomad Network
  • +
  • Aplikacja Sideband na Androida, Linuxa i macOS posiada interfejs graficzny i koncentruje się na łatwości użytkowania.
  • +
  • LXMF jest rozproszonym, odpornym na opóźnienia i zakłócenia protokołem wysyłania wiadomości zbudowanym na Reticulum
  • +
+

Zależności

+

Instalacja domyślnego pakietu rns wymaga zależności wymienionych poniżej. Prawie wszystkie systemy i dystrybucje mają łatwo dostępne pakiety dla tych zależności, a kiedy pakiet rns jest instalowany z pip, zostaną one pobrane i zainstalowane również.

+ +

Na bardziej nietypowych systemach, w niektórych rzadkich przypadkach, może nie być możliwe zainstalowanie lub nawet skompilowanie jednego lub więcej z powyższych modułów. W takich sytuacjach można użyć pakietu rnspure, który nie wymaga zewnętrznych zależności do instalacji. Proszę zauważyć, że zawartość pakietów rns i rnspure jest identyczna. Jedyną różnicą jest to, że pakiet rnspure nie zawiera żadnych zależności wymaganych do instalacji.

+

Bez względu na to, jak Reticulum jest zainstalowane i uruchomione, załaduje zewnętrzne zależności tylko wtedy, gdy są one potrzebne i dostępne. Jeśli na przykład chcesz używać Reticulum na systemie, który nie może obsługiwać pyserial, jest to całkowicie możliwe przy użyciu pakietu rnspure, ale Reticulum nie będzie w stanie korzystać z interfejsów opartych na portach szeregowych. Wszystkie inne dostępne moduły będą nadal ładowane w razie potrzeby.

+

Uwaga! Jeśli używasz pakietu rnspure do uruchomienia Reticulum na systemach, które nie wspierają PyCA/cryptography, ważne jest, abyś przeczytał i zrozumiał sekcję Prymitywy Kryptograficzne na tej stronie.

+

Wydajność

+

Reticulum celuje w bardzo szeroki zakres wydajności użytkowej, ale priorytetowo traktuje funkcjonalność i wydajność w stosunku do mediów o niskiej przepustowości. Celem jest zapewnienie dynamicznej wydajności od 250 bitów na sekundę do 1 gigabita na sekundę na normalnym sprzęcie.

+

Obecnie użyteczna wydajność wynosi około 500 bitów na sekundę do 20 megabitów na sekundę, z nośnikami fizycznymi szybszymi niż te które nie są nienasycone. Wydajność wykraczająca poza obecny poziom jest przeznaczona do przyszłych aktualizacji, ale nie ma wysokiego priorytetu do czasu zablokowania formatu przewodów i API.

+

Następny Temat: Wspierany Hardware

+ + diff --git a/build/start_pt-br.html b/build/start_pt-br.html new file mode 100644 index 0000000..6439cda --- /dev/null +++ b/build/start_pt-br.html @@ -0,0 +1,64 @@ + + + + + + +Reticulum Network + + + +

+

Começar

+

A melhor forma de começar com o framework Reticulum depende do que você quer fazer. para detalhes completos e exemplos, olhe na seção Começo Rápido do Manual Reticulum.

+

Software Experimental

+

Atenção! Reticulum ainda está em beta, Isso significa que ele atualmente executa bem, muito estável, mesmo assim ainda pode ter bugs críticos e falhas no funcionamento, privacidade ou a segurança do sistema como um todo. +Utilize o Reticulum se estiver confortável em relação a isso e entenda suas implicações.

+

Comunidade e Ajuda

+

Se você estiver com problemas ou se algo não estiver funcionando, aqui estão alguns ótimos lugares para pedir ajuda:

+ +

Instalação

+

Para instalar o Reticulum e utilitários relacionados no seu sistema, a forma mais fácil é via pip:

+
pip install rns
+
+

Feito isto, é possível utilizar qualquer programa que utilize o Reticulum ou inicie o Reticulum como um serviço do sistema com a ferramenta rnsd.

+

Se o pip não estiver disponível no seu sistema, instale o python3 ou python3-pip no seu sistema antes.

+

Durante a primeira execução, Reticulum irá criar um arquivo de configuração padrão, provendo conexão básica para outros pares Reticulum que podem ser alcançados. Se algum desses pares locais são Instâncias de Transporte, isso poderá te conectar a redes maiores. O arquivo de configuração padrão tem alguns exemplos e referências para criar uma configuração mais complexa.

+

Para exemplos mais detalhados de como expandir a comunicação por muitos dispositivos, tais como rádio amador, LoRa, portas seriais, links rápidos de IP ou pela Internet utilizando UDP ou TCP, leia mais na seção de Interfaces Suportadas do Manual Reticulum.

+

Ferramentas Incluídas

+

Reticulum incluí uma variedade de ferramentas úteis para gerenciar suas redes, como ver estado, informações e outras tarefas. Você pode ler mais sobre essas ferramentas na seção de Utilitários Incluídos do Manual Reticulum.

+
    +
  • O serviço de sistema rnsd (daemon) para executar o Reticulum é um serviço sempre disponível.
  • +
  • Uma ferramenta para interface de estado chamada rnstatus, que mostra informações sobre as interfaces.
  • +
  • A ferramenta para bloqueio de caminho e gerenciamento rnpath permitindo que você observe e modifique tabelas de caminho.
  • +
  • Uma ferramenta de diagnóstico chamada rnprobe para checar a conectividade nos destinos.
  • +
  • Um programa simples de transferência de arquivos chamado rncp tornando fácil de copiar arquivos para sistemas remotos.
  • +
  • Um programa de comandos remotos rnx que permite você executar comandos e programas para obter dados de sistemas remotos.
  • +
+

Todas as ferramentas, incluindo rnx e rncp, funcionam de forma confiável e bem mesmo sob links de baixa largura de banda como LoRa e rádio amador.

+

Programas utilizando Reticulum

+

Se você quiser ter uma noção do que o Reticulum é capaz de fazer, veja os seguintes projetos.

+
    +
  • Para uma plataforma de comunicação mesh resiliente, isolada da Internet e criptografada, veja a Nomad Network.
  • +
  • O app Sideband para Android, Linux e MacOSX possuí interface gráfica e foca em facilidade.
  • +
  • LXMF é um protocolo de transferência de mensagens distribuído, resistente a delays e interrupções, criado no Reticulum.
  • +
+

Dependências

+

A instalação do pacote padrão rns requer as dependências listadas abaixo. Quase todos os sistemas e distribuições tem pacotes disponíveis para estas dependências, quando o pacote rns é instalado via pip, eles serão baixados e instalados em conjunto.

+ +

Em alguns sistemas ou em raros casos, pode não ser possível instalar ou até compilar um ou mais dos módulos acima. Em tais situações, você pode utilizar o pacote rnspure no lugar, que não irá pedir dependências externas para instalação. Note que o conteúdo dos pacotes rns e rnspure é idêntico. A única diferença são as listas do pacote rnspure que não requerem dependências para instalação.

+

Não importa como o Reticulum é instalado ou iniciado, ele vai carregar as dependências externas apenas caso forem necessárias ou disponíveis. Se por exemplo você quer utilizar o Reticulum em um sistema que não suporta o pyserial, é perfeitamente possível utilizar o pacote rnspure, mas o Reticulum em sistemas que não suportam a PyCA/cryptography, é importante que você leia e entenda a seção de Criptografia neste site.

+

Desempenho

+

Reticulum possuí um grande potencial de desempenho, mas prioriza a funcionalidade e desempenho em dispositivos de baixa largura de rede. O objetivo é fornecer desempenho dinâmico de 250 bits por segundo para 1 gigabit por segundo em hardware normal.

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Atualmente o desempenho usual é aproximadamente 500 bits por segundo até 20 megabits por segundo, com dispositivos físicos mais rápidos que isso não sendo saturados. O desempenho além do nível atual é esperado para as próximas atualizações, mas não com prioridade alta até que o formato de cabo e API estejam maduros.

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Próxima Página: Hardware Compátivel

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