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Richard van der Hoff fbd9de6d1f Synapse 1.26.0 (2021-01-27)
===========================
 
 This release brings a new schema version for Synapse and rolling back to a previous
 version is not trivial. Please review [UPGRADE.rst](UPGRADE.rst) for more details
 on these changes and for general upgrade guidance.
 
 No significant changes since 1.26.0rc2.
 
 Synapse 1.26.0rc2 (2021-01-25)
 ==============================
 
 Bugfixes
 --------
 
 - Fix receipts and account data not being sent down sync. Introduced in v1.26.0rc1. ([\#9193](https://github.com/matrix-org/synapse/issues/9193), [\#9195](https://github.com/matrix-org/synapse/issues/9195))
 - Fix chain cover update to handle events with duplicate auth events. Introduced in v1.26.0rc1. ([\#9210](https://github.com/matrix-org/synapse/issues/9210))
 
 Internal Changes
 ----------------
 
 - Add an `oidc-` prefix to any `idp_id`s which are given in the `oidc_providers` configuration. ([\#9189](https://github.com/matrix-org/synapse/issues/9189))
 - Bump minimum `psycopg2` version to v2.8. ([\#9204](https://github.com/matrix-org/synapse/issues/9204))
 
 Synapse 1.26.0rc1 (2021-01-20)
 ==============================
 
 This release brings a new schema version for Synapse and rolling back to a previous
 version is not trivial. Please review [UPGRADE.rst](UPGRADE.rst) for more details
 on these changes and for general upgrade guidance.
 
 Features
 --------
 
 - Add support for multiple SSO Identity Providers. ([\#9015](https://github.com/matrix-org/synapse/issues/9015), [\#9017](https://github.com/matrix-org/synapse/issues/9017), [\#9036](https://github.com/matrix-org/synapse/issues/9036), [\#9067](https://github.com/matrix-org/synapse/issues/9067), [\#9081](https://github.com/matrix-org/synapse/issues/9081), [\#9082](https://github.com/matrix-org/synapse/issues/9082), [\#9105](https://github.com/matrix-org/synapse/issues/9105), [\#9107](https://github.com/matrix-org/synapse/issues/9107), [\#9109](https://github.com/matrix-org/synapse/issues/9109), [\#9110](https://github.com/matrix-org/synapse/issues/9110), [\#9127](https://github.com/matrix-org/synapse/issues/9127), [\#9153](https://github.com/matrix-org/synapse/issues/9153), [\#9154](https://github.com/matrix-org/synapse/issues/9154), [\#9177](https://github.com/matrix-org/synapse/issues/9177))
 - During user-interactive authentication via single-sign-on, give a better error if the user uses the wrong account on the SSO IdP. ([\#9091](https://github.com/matrix-org/synapse/issues/9091))
 - Give the `public_baseurl` a default value, if it is not explicitly set in the configuration file. ([\#9159](https://github.com/matrix-org/synapse/issues/9159))
 - Improve performance when calculating ignored users in large rooms. ([\#9024](https://github.com/matrix-org/synapse/issues/9024))
 - Implement [MSC2176](https://github.com/matrix-org/matrix-doc/pull/2176) in an experimental room version. ([\#8984](https://github.com/matrix-org/synapse/issues/8984))
 - Add an admin API for protecting local media from quarantine. ([\#9086](https://github.com/matrix-org/synapse/issues/9086))
 - Remove a user's avatar URL and display name when deactivated with the Admin API. ([\#8932](https://github.com/matrix-org/synapse/issues/8932))
 - Update `/_synapse/admin/v1/users/<user_id>/joined_rooms` to work for both local and remote users. ([\#8948](https://github.com/matrix-org/synapse/issues/8948))
 - Add experimental support for handling to-device messages on worker processes. ([\#9042](https://github.com/matrix-org/synapse/issues/9042), [\#9043](https://github.com/matrix-org/synapse/issues/9043), [\#9044](https://github.com/matrix-org/synapse/issues/9044), [\#9130](https://github.com/matrix-org/synapse/issues/9130))
 - Add experimental support for handling `/keys/claim` and `/room_keys` APIs on worker processes. ([\#9068](https://github.com/matrix-org/synapse/issues/9068))
 - Add experimental support for handling `/devices` API on worker processes. ([\#9092](https://github.com/matrix-org/synapse/issues/9092))
 - Add experimental support for moving off receipts and account data persistence off master. ([\#9104](https://github.com/matrix-org/synapse/issues/9104), [\#9166](https://github.com/matrix-org/synapse/issues/9166))
 
 Bugfixes
 --------
 
 - Fix a long-standing issue where an internal server error would occur when requesting a profile over federation that did not include a display name / avatar URL. ([\#9023](https://github.com/matrix-org/synapse/issues/9023))
 - Fix a long-standing bug where some caches could grow larger than configured. ([\#9028](https://github.com/matrix-org/synapse/issues/9028))
 - Fix error handling during insertion of client IPs into the database. ([\#9051](https://github.com/matrix-org/synapse/issues/9051))
 - Fix bug where we didn't correctly record CPU time spent in `on_new_event` block. ([\#9053](https://github.com/matrix-org/synapse/issues/9053))
 - Fix a minor bug which could cause confusing error messages from invalid configurations. ([\#9054](https://github.com/matrix-org/synapse/issues/9054))
 - Fix incorrect exit code when there is an error at startup. ([\#9059](https://github.com/matrix-org/synapse/issues/9059))
 - Fix `JSONDecodeError` spamming the logs when sending transactions to remote servers. ([\#9070](https://github.com/matrix-org/synapse/issues/9070))
 - Fix "Failed to send request" errors when a client provides an invalid room alias. ([\#9071](https://github.com/matrix-org/synapse/issues/9071))
 - Fix bugs in federation catchup logic that caused outbound federation to be delayed for large servers after start up. Introduced in v1.8.0 and v1.21.0. ([\#9114](https://github.com/matrix-org/synapse/issues/9114), [\#9116](https://github.com/matrix-org/synapse/issues/9116))
 - Fix corruption of `pushers` data when a postgres bouncer is used. ([\#9117](https://github.com/matrix-org/synapse/issues/9117))
 - Fix minor bugs in handling the `clientRedirectUrl` parameter for SSO login. ([\#9128](https://github.com/matrix-org/synapse/issues/9128))
 - Fix "Unhandled error in Deferred: BodyExceededMaxSize" errors when .well-known files that are too large. ([\#9108](https://github.com/matrix-org/synapse/issues/9108))
 - Fix "UnboundLocalError: local variable 'length' referenced before assignment" errors when the response body exceeds the expected size. This bug was introduced in v1.25.0. ([\#9145](https://github.com/matrix-org/synapse/issues/9145))
 - Fix a long-standing bug "ValueError: invalid literal for int() with base 10" when `/publicRooms` is requested with an invalid `server` parameter. ([\#9161](https://github.com/matrix-org/synapse/issues/9161))
 
 Improved Documentation
 ----------------------
 
 - Add some extra docs for getting Synapse running on macOS. ([\#8997](https://github.com/matrix-org/synapse/issues/8997))
 - Correct a typo in the `systemd-with-workers` documentation. ([\#9035](https://github.com/matrix-org/synapse/issues/9035))
 - Correct a typo in `INSTALL.md`. ([\#9040](https://github.com/matrix-org/synapse/issues/9040))
 - Add missing `user_mapping_provider` configuration to the Keycloak OIDC example. Contributed by @chris-ruecker. ([\#9057](https://github.com/matrix-org/synapse/issues/9057))
 - Quote `pip install` packages when extras are used to avoid shells interpreting bracket characters. ([\#9151](https://github.com/matrix-org/synapse/issues/9151))
 
 Deprecations and Removals
 -------------------------
 
 - Remove broken and unmaintained `demo/webserver.py` script. ([\#9039](https://github.com/matrix-org/synapse/issues/9039))
 
 Internal Changes
 ----------------
 
 - Improve efficiency of large state resolutions. ([\#8868](https://github.com/matrix-org/synapse/issues/8868), [\#9029](https://github.com/matrix-org/synapse/issues/9029), [\#9115](https://github.com/matrix-org/synapse/issues/9115), [\#9118](https://github.com/matrix-org/synapse/issues/9118), [\#9124](https://github.com/matrix-org/synapse/issues/9124))
 - Various clean-ups to the structured logging and logging context code. ([\#8939](https://github.com/matrix-org/synapse/issues/8939))
 - Ensure rejected events get added to some metadata tables. ([\#9016](https://github.com/matrix-org/synapse/issues/9016))
 - Ignore date-rotated homeserver logs saved to disk. ([\#9018](https://github.com/matrix-org/synapse/issues/9018))
 - Remove an unused column from `access_tokens` table. ([\#9025](https://github.com/matrix-org/synapse/issues/9025))
 - Add a `-noextras` factor to `tox.ini`, to support running the tests with no optional dependencies. ([\#9030](https://github.com/matrix-org/synapse/issues/9030))
 - Fix running unit tests when optional dependencies are not installed. ([\#9031](https://github.com/matrix-org/synapse/issues/9031))
 - Allow bumping schema version when using split out state database. ([\#9033](https://github.com/matrix-org/synapse/issues/9033))
 - Configure the linters to run on a consistent set of files. ([\#9038](https://github.com/matrix-org/synapse/issues/9038))
 - Various cleanups to device inbox store. ([\#9041](https://github.com/matrix-org/synapse/issues/9041))
 - Drop unused database tables. ([\#9055](https://github.com/matrix-org/synapse/issues/9055))
 - Remove unused `SynapseService` class. ([\#9058](https://github.com/matrix-org/synapse/issues/9058))
 - Remove unnecessary declarations in the tests for the admin API. ([\#9063](https://github.com/matrix-org/synapse/issues/9063))
 - Remove `SynapseRequest.get_user_agent`. ([\#9069](https://github.com/matrix-org/synapse/issues/9069))
 - Remove redundant `Homeserver.get_ip_from_request` method. ([\#9080](https://github.com/matrix-org/synapse/issues/9080))
 - Add type hints to media repository. ([\#9093](https://github.com/matrix-org/synapse/issues/9093))
 - Fix the wrong arguments being passed to `BlacklistingAgentWrapper` from `MatrixFederationAgent`. Contributed by Timothy Leung. ([\#9098](https://github.com/matrix-org/synapse/issues/9098))
 - Reduce the scope of caught exceptions in `BlacklistingAgentWrapper`. ([\#9106](https://github.com/matrix-org/synapse/issues/9106))
 - Improve `UsernamePickerTestCase`. ([\#9112](https://github.com/matrix-org/synapse/issues/9112))
 - Remove dependency on `distutils`. ([\#9125](https://github.com/matrix-org/synapse/issues/9125))
 - Enforce that replication HTTP clients are called with keyword arguments only. ([\#9144](https://github.com/matrix-org/synapse/issues/9144))
 - Fix the Python 3.5 / old dependencies build in CI. ([\#9146](https://github.com/matrix-org/synapse/issues/9146))
 - Replace the old `perspectives` option in the Synapse docker config file template with `trusted_key_servers`. ([\#9157](https://github.com/matrix-org/synapse/issues/9157))
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Merge tag 'v1.26.0' into social_login

Synapse 1.26.0 (2021-01-27)
===========================

This release brings a new schema version for Synapse and rolling back to a previous
version is not trivial. Please review [UPGRADE.rst](UPGRADE.rst) for more details
on these changes and for general upgrade guidance.

No significant changes since 1.26.0rc2.

Synapse 1.26.0rc2 (2021-01-25)
==============================

Bugfixes
--------

- Fix receipts and account data not being sent down sync. Introduced in v1.26.0rc1. ([\#9193](https://github.com/matrix-org/synapse/issues/9193), [\#9195](https://github.com/matrix-org/synapse/issues/9195))
- Fix chain cover update to handle events with duplicate auth events. Introduced in v1.26.0rc1. ([\#9210](https://github.com/matrix-org/synapse/issues/9210))

Internal Changes
----------------

- Add an `oidc-` prefix to any `idp_id`s which are given in the `oidc_providers` configuration. ([\#9189](https://github.com/matrix-org/synapse/issues/9189))
- Bump minimum `psycopg2` version to v2.8. ([\#9204](https://github.com/matrix-org/synapse/issues/9204))

Synapse 1.26.0rc1 (2021-01-20)
==============================

This release brings a new schema version for Synapse and rolling back to a previous
version is not trivial. Please review [UPGRADE.rst](UPGRADE.rst) for more details
on these changes and for general upgrade guidance.

Features
--------

- Add support for multiple SSO Identity Providers. ([\#9015](https://github.com/matrix-org/synapse/issues/9015), [\#9017](https://github.com/matrix-org/synapse/issues/9017), [\#9036](https://github.com/matrix-org/synapse/issues/9036), [\#9067](https://github.com/matrix-org/synapse/issues/9067), [\#9081](https://github.com/matrix-org/synapse/issues/9081), [\#9082](https://github.com/matrix-org/synapse/issues/9082), [\#9105](https://github.com/matrix-org/synapse/issues/9105), [\#9107](https://github.com/matrix-org/synapse/issues/9107), [\#9109](https://github.com/matrix-org/synapse/issues/9109), [\#9110](https://github.com/matrix-org/synapse/issues/9110), [\#9127](https://github.com/matrix-org/synapse/issues/9127), [\#9153](https://github.com/matrix-org/synapse/issues/9153), [\#9154](https://github.com/matrix-org/synapse/issues/9154), [\#9177](https://github.com/matrix-org/synapse/issues/9177))
- During user-interactive authentication via single-sign-on, give a better error if the user uses the wrong account on the SSO IdP. ([\#9091](https://github.com/matrix-org/synapse/issues/9091))
- Give the `public_baseurl` a default value, if it is not explicitly set in the configuration file. ([\#9159](https://github.com/matrix-org/synapse/issues/9159))
- Improve performance when calculating ignored users in large rooms. ([\#9024](https://github.com/matrix-org/synapse/issues/9024))
- Implement [MSC2176](https://github.com/matrix-org/matrix-doc/pull/2176) in an experimental room version. ([\#8984](https://github.com/matrix-org/synapse/issues/8984))
- Add an admin API for protecting local media from quarantine. ([\#9086](https://github.com/matrix-org/synapse/issues/9086))
- Remove a user's avatar URL and display name when deactivated with the Admin API. ([\#8932](https://github.com/matrix-org/synapse/issues/8932))
- Update `/_synapse/admin/v1/users/<user_id>/joined_rooms` to work for both local and remote users. ([\#8948](https://github.com/matrix-org/synapse/issues/8948))
- Add experimental support for handling to-device messages on worker processes. ([\#9042](https://github.com/matrix-org/synapse/issues/9042), [\#9043](https://github.com/matrix-org/synapse/issues/9043), [\#9044](https://github.com/matrix-org/synapse/issues/9044), [\#9130](https://github.com/matrix-org/synapse/issues/9130))
- Add experimental support for handling `/keys/claim` and `/room_keys` APIs on worker processes. ([\#9068](https://github.com/matrix-org/synapse/issues/9068))
- Add experimental support for handling `/devices` API on worker processes. ([\#9092](https://github.com/matrix-org/synapse/issues/9092))
- Add experimental support for moving off receipts and account data persistence off master. ([\#9104](https://github.com/matrix-org/synapse/issues/9104), [\#9166](https://github.com/matrix-org/synapse/issues/9166))

Bugfixes
--------

- Fix a long-standing issue where an internal server error would occur when requesting a profile over federation that did not include a display name / avatar URL. ([\#9023](https://github.com/matrix-org/synapse/issues/9023))
- Fix a long-standing bug where some caches could grow larger than configured. ([\#9028](https://github.com/matrix-org/synapse/issues/9028))
- Fix error handling during insertion of client IPs into the database. ([\#9051](https://github.com/matrix-org/synapse/issues/9051))
- Fix bug where we didn't correctly record CPU time spent in `on_new_event` block. ([\#9053](https://github.com/matrix-org/synapse/issues/9053))
- Fix a minor bug which could cause confusing error messages from invalid configurations. ([\#9054](https://github.com/matrix-org/synapse/issues/9054))
- Fix incorrect exit code when there is an error at startup. ([\#9059](https://github.com/matrix-org/synapse/issues/9059))
- Fix `JSONDecodeError` spamming the logs when sending transactions to remote servers. ([\#9070](https://github.com/matrix-org/synapse/issues/9070))
- Fix "Failed to send request" errors when a client provides an invalid room alias. ([\#9071](https://github.com/matrix-org/synapse/issues/9071))
- Fix bugs in federation catchup logic that caused outbound federation to be delayed for large servers after start up. Introduced in v1.8.0 and v1.21.0. ([\#9114](https://github.com/matrix-org/synapse/issues/9114), [\#9116](https://github.com/matrix-org/synapse/issues/9116))
- Fix corruption of `pushers` data when a postgres bouncer is used. ([\#9117](https://github.com/matrix-org/synapse/issues/9117))
- Fix minor bugs in handling the `clientRedirectUrl` parameter for SSO login. ([\#9128](https://github.com/matrix-org/synapse/issues/9128))
- Fix "Unhandled error in Deferred: BodyExceededMaxSize" errors when .well-known files that are too large. ([\#9108](https://github.com/matrix-org/synapse/issues/9108))
- Fix "UnboundLocalError: local variable 'length' referenced before assignment" errors when the response body exceeds the expected size. This bug was introduced in v1.25.0. ([\#9145](https://github.com/matrix-org/synapse/issues/9145))
- Fix a long-standing bug "ValueError: invalid literal for int() with base 10" when `/publicRooms` is requested with an invalid `server` parameter. ([\#9161](https://github.com/matrix-org/synapse/issues/9161))

Improved Documentation
----------------------

- Add some extra docs for getting Synapse running on macOS. ([\#8997](https://github.com/matrix-org/synapse/issues/8997))
- Correct a typo in the `systemd-with-workers` documentation. ([\#9035](https://github.com/matrix-org/synapse/issues/9035))
- Correct a typo in `INSTALL.md`. ([\#9040](https://github.com/matrix-org/synapse/issues/9040))
- Add missing `user_mapping_provider` configuration to the Keycloak OIDC example. Contributed by @chris-ruecker. ([\#9057](https://github.com/matrix-org/synapse/issues/9057))
- Quote `pip install` packages when extras are used to avoid shells interpreting bracket characters. ([\#9151](https://github.com/matrix-org/synapse/issues/9151))

Deprecations and Removals
-------------------------

- Remove broken and unmaintained `demo/webserver.py` script. ([\#9039](https://github.com/matrix-org/synapse/issues/9039))

Internal Changes
----------------

- Improve efficiency of large state resolutions. ([\#8868](https://github.com/matrix-org/synapse/issues/8868), [\#9029](https://github.com/matrix-org/synapse/issues/9029), [\#9115](https://github.com/matrix-org/synapse/issues/9115), [\#9118](https://github.com/matrix-org/synapse/issues/9118), [\#9124](https://github.com/matrix-org/synapse/issues/9124))
- Various clean-ups to the structured logging and logging context code. ([\#8939](https://github.com/matrix-org/synapse/issues/8939))
- Ensure rejected events get added to some metadata tables. ([\#9016](https://github.com/matrix-org/synapse/issues/9016))
- Ignore date-rotated homeserver logs saved to disk. ([\#9018](https://github.com/matrix-org/synapse/issues/9018))
- Remove an unused column from `access_tokens` table. ([\#9025](https://github.com/matrix-org/synapse/issues/9025))
- Add a `-noextras` factor to `tox.ini`, to support running the tests with no optional dependencies. ([\#9030](https://github.com/matrix-org/synapse/issues/9030))
- Fix running unit tests when optional dependencies are not installed. ([\#9031](https://github.com/matrix-org/synapse/issues/9031))
- Allow bumping schema version when using split out state database. ([\#9033](https://github.com/matrix-org/synapse/issues/9033))
- Configure the linters to run on a consistent set of files. ([\#9038](https://github.com/matrix-org/synapse/issues/9038))
- Various cleanups to device inbox store. ([\#9041](https://github.com/matrix-org/synapse/issues/9041))
- Drop unused database tables. ([\#9055](https://github.com/matrix-org/synapse/issues/9055))
- Remove unused `SynapseService` class. ([\#9058](https://github.com/matrix-org/synapse/issues/9058))
- Remove unnecessary declarations in the tests for the admin API. ([\#9063](https://github.com/matrix-org/synapse/issues/9063))
- Remove `SynapseRequest.get_user_agent`. ([\#9069](https://github.com/matrix-org/synapse/issues/9069))
- Remove redundant `Homeserver.get_ip_from_request` method. ([\#9080](https://github.com/matrix-org/synapse/issues/9080))
- Add type hints to media repository. ([\#9093](https://github.com/matrix-org/synapse/issues/9093))
- Fix the wrong arguments being passed to `BlacklistingAgentWrapper` from `MatrixFederationAgent`. Contributed by Timothy Leung. ([\#9098](https://github.com/matrix-org/synapse/issues/9098))
- Reduce the scope of caught exceptions in `BlacklistingAgentWrapper`. ([\#9106](https://github.com/matrix-org/synapse/issues/9106))
- Improve `UsernamePickerTestCase`. ([\#9112](https://github.com/matrix-org/synapse/issues/9112))
- Remove dependency on `distutils`. ([\#9125](https://github.com/matrix-org/synapse/issues/9125))
- Enforce that replication HTTP clients are called with keyword arguments only. ([\#9144](https://github.com/matrix-org/synapse/issues/9144))
- Fix the Python 3.5 / old dependencies build in CI. ([\#9146](https://github.com/matrix-org/synapse/issues/9146))
- Replace the old `perspectives` option in the Synapse docker config file template with `trusted_key_servers`. ([\#9157](https://github.com/matrix-org/synapse/issues/9157))
2021-01-27 17:27:58 +00:00
.buildkite Fix Python 3.5 old deps build by using a compatible pip version. (#9217) 2021-01-25 19:38:31 +00:00
.circleci Don't publish latest docker image until all archs are built (#8909) 2020-12-10 17:00:29 +00:00
.github bug report template: move comments into comment (#8030) 2020-08-05 09:34:42 +01:00
changelog.d Implement MSC2858 support (#9183) 2021-01-27 12:41:24 +00:00
contrib Add missing prometheus rules for persisted events (#8802) 2020-12-02 15:18:41 +00:00
debian Remote dependency on distutils (#9125) 2021-01-15 15:59:20 +00:00
demo Remove broken and unmaintained 'webserver.py' script (#9039) 2021-01-08 14:09:06 +00:00
docker Replace 'perspectives' config block with 'trusted_key_servers' in docker homeserver.yaml template (#9157) 2021-01-19 16:19:32 +00:00
docs Merge remote-tracking branch 'origin/release-v1.26.0' into develop 2021-01-21 13:17:07 +00:00
scripts Add background update for add chain cover index (#9029) 2021-01-14 15:18:27 +00:00
scripts-dev Add type hints to the push module. (#8901) 2020-12-11 11:43:53 -05:00
snap Added explicit Python build tools to snap requirements (#7213) 2020-04-17 17:28:00 +01:00
stubs Run the linters on a consistent list of files (#9038) 2021-01-08 14:08:44 +00:00
synapse Synapse 1.26.0 (2021-01-27) 2021-01-27 17:27:58 +00:00
synmark Support generating structured logs in addition to standard logs. (#8607) 2020-10-29 07:27:37 -04:00
tests Implement MSC2858 support (#9183) 2021-01-27 12:41:24 +00:00
.codecov.yml Disable codecov reports to GH comments. 2019-07-31 10:56:02 +01:00
.coveragerc Fix coverage in sytest and use plugins for buildkite (#5922) 2019-08-29 22:19:57 +10:00
.dockerignore Reduce the amount of stuff we send in the docker context (#5564) 2019-06-27 11:18:51 +01:00
.editorconfig Add a basic .editorconfig 2018-12-03 22:38:47 -06:00
.gitignore Add some extra notes for getting Synapse running on macOS. (#8997) 2021-01-15 06:58:31 -05:00
AUTHORS.rst Automatically delete empty groups/communities (#6453) 2019-12-16 12:12:40 +00:00
CHANGES.md Move note above changes. 2021-01-27 11:02:04 -05:00
CONTRIBUTING.md Add documentation about documentation to CONTRIBUTING.md (#8714) 2020-11-06 11:59:22 +00:00
INSTALL.md Add some extra notes for getting Synapse running on macOS. (#8997) 2021-01-15 06:58:31 -05:00
LICENSE Reference Matrix Home Server 2014-08-12 15:10:52 +01:00
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=========================================================
Synapse |support| |development| |license| |pypi| |python|
=========================================================

.. contents::

Introduction
============

Matrix is an ambitious new ecosystem for open federated Instant Messaging and
VoIP.  The basics you need to know to get up and running are:

- Everything in Matrix happens in a room.  Rooms are distributed and do not
  exist on any single server.  Rooms can be located using convenience aliases
  like ``#matrix:matrix.org`` or ``#test:localhost:8448``.

- Matrix user IDs look like ``@matthew:matrix.org`` (although in the future
  you will normally refer to yourself and others using a third party identifier
  (3PID): email address, phone number, etc rather than manipulating Matrix user IDs)

The overall architecture is::

      client <----> homeserver <=====================> homeserver <----> client
             https://somewhere.org/_matrix      https://elsewhere.net/_matrix

``#matrix:matrix.org`` is the official support room for Matrix, and can be
accessed by any client from https://matrix.org/docs/projects/try-matrix-now.html or
via IRC bridge at irc://irc.freenode.net/matrix.

Synapse is currently in rapid development, but as of version 0.5 we believe it
is sufficiently stable to be run as an internet-facing service for real usage!

About Matrix
============

Matrix specifies a set of pragmatic RESTful HTTP JSON APIs as an open standard,
which handle:

- Creating and managing fully distributed chat rooms with no
  single points of control or failure
- Eventually-consistent cryptographically secure synchronisation of room
  state across a global open network of federated servers and services
- Sending and receiving extensible messages in a room with (optional)
  end-to-end encryption
- Inviting, joining, leaving, kicking, banning room members
- Managing user accounts (registration, login, logout)
- Using 3rd Party IDs (3PIDs) such as email addresses, phone numbers,
  Facebook accounts to authenticate, identify and discover users on Matrix.
- Placing 1:1 VoIP and Video calls

These APIs are intended to be implemented on a wide range of servers, services
and clients, letting developers build messaging and VoIP functionality on top
of the entirely open Matrix ecosystem rather than using closed or proprietary
solutions. The hope is for Matrix to act as the building blocks for a new
generation of fully open and interoperable messaging and VoIP apps for the
internet.

Synapse is a reference "homeserver" implementation of Matrix from the core
development team at matrix.org, written in Python/Twisted.  It is intended to
showcase the concept of Matrix and let folks see the spec in the context of a
codebase and let you run your own homeserver and generally help bootstrap the
ecosystem.

In Matrix, every user runs one or more Matrix clients, which connect through to
a Matrix homeserver. The homeserver stores all their personal chat history and
user account information - much as a mail client connects through to an
IMAP/SMTP server. Just like email, you can either run your own Matrix
homeserver and control and own your own communications and history or use one
hosted by someone else (e.g. matrix.org) - there is no single point of control
or mandatory service provider in Matrix, unlike WhatsApp, Facebook, Hangouts,
etc.

We'd like to invite you to join #matrix:matrix.org (via
https://matrix.org/docs/projects/try-matrix-now.html), run a homeserver, take a look
at the `Matrix spec <https://matrix.org/docs/spec>`_, and experiment with the
`APIs <https://matrix.org/docs/api>`_ and `Client SDKs
<https://matrix.org/docs/projects/try-matrix-now.html#client-sdks>`_.

Thanks for using Matrix!

Support
=======

For support installing or managing Synapse, please join |room|_ (from a matrix.org
account if necessary) and ask questions there. We do not use GitHub issues for
support requests, only for bug reports and feature requests.

.. |room| replace:: ``#synapse:matrix.org``
.. _room: https://matrix.to/#/#synapse:matrix.org


Synapse Installation
====================

.. _federation:

* For details on how to install synapse, see `<INSTALL.md>`_.
* For specific details on how to configure Synapse for federation see `docs/federate.md <docs/federate.md>`_


Connecting to Synapse from a client
===================================

The easiest way to try out your new Synapse installation is by connecting to it
from a web client.

Unless you are running a test instance of Synapse on your local machine, in
general, you will need to enable TLS support before you can successfully
connect from a client: see `<INSTALL.md#tls-certificates>`_.

An easy way to get started is to login or register via Element at
https://app.element.io/#/login or https://app.element.io/#/register respectively.
You will need to change the server you are logging into from ``matrix.org``
and instead specify a Homeserver URL of ``https://<server_name>:8448``
(or just ``https://<server_name>`` if you are using a reverse proxy).
If you prefer to use another client, refer to our
`client breakdown <https://matrix.org/docs/projects/clients-matrix>`_.

If all goes well you should at least be able to log in, create a room, and
start sending messages.

.. _`client-user-reg`:

Registering a new user from a client
------------------------------------

By default, registration of new users via Matrix clients is disabled. To enable
it, specify ``enable_registration: true`` in ``homeserver.yaml``. (It is then
recommended to also set up CAPTCHA - see `<docs/CAPTCHA_SETUP.md>`_.)

Once ``enable_registration`` is set to ``true``, it is possible to register a
user via a Matrix client.

Your new user name will be formed partly from the ``server_name``, and partly
from a localpart you specify when you create the account. Your name will take
the form of::

    @localpart:my.domain.name

(pronounced "at localpart on my dot domain dot name").

As when logging in, you will need to specify a "Custom server".  Specify your
desired ``localpart`` in the 'User name' box.

ACME setup
==========

For details on having Synapse manage your federation TLS certificates
automatically, please see `<docs/ACME.md>`_.


Security Note
=============

Matrix serves raw user generated data in some APIs - specifically the `content
repository endpoints <https://matrix.org/docs/spec/client_server/latest.html#get-matrix-media-r0-download-servername-mediaid>`_.

Whilst we have tried to mitigate against possible XSS attacks (e.g.
https://github.com/matrix-org/synapse/pull/1021) we recommend running
matrix homeservers on a dedicated domain name, to limit any malicious user generated
content served to web browsers a matrix API from being able to attack webapps hosted
on the same domain.  This is particularly true of sharing a matrix webclient and
server on the same domain.

See https://github.com/vector-im/riot-web/issues/1977 and
https://developer.github.com/changes/2014-04-25-user-content-security for more details.


Upgrading an existing Synapse
=============================

The instructions for upgrading synapse are in `UPGRADE.rst`_.
Please check these instructions as upgrading may require extra steps for some
versions of synapse.

.. _UPGRADE.rst: UPGRADE.rst

.. _reverse-proxy:

Using a reverse proxy with Synapse
==================================

It is recommended to put a reverse proxy such as
`nginx <https://nginx.org/en/docs/http/ngx_http_proxy_module.html>`_,
`Apache <https://httpd.apache.org/docs/current/mod/mod_proxy_http.html>`_,
`Caddy <https://caddyserver.com/docs/quick-starts/reverse-proxy>`_ or
`HAProxy <https://www.haproxy.org/>`_ in front of Synapse. One advantage of
doing so is that it means that you can expose the default https port (443) to
Matrix clients without needing to run Synapse with root privileges.

For information on configuring one, see `<docs/reverse_proxy.md>`_.

Identity Servers
================

Identity servers have the job of mapping email addresses and other 3rd Party
IDs (3PIDs) to Matrix user IDs, as well as verifying the ownership of 3PIDs
before creating that mapping.

**They are not where accounts or credentials are stored - these live on home
servers. Identity Servers are just for mapping 3rd party IDs to matrix IDs.**

This process is very security-sensitive, as there is obvious risk of spam if it
is too easy to sign up for Matrix accounts or harvest 3PID data. In the longer
term, we hope to create a decentralised system to manage it (`matrix-doc #712
<https://github.com/matrix-org/matrix-doc/issues/712>`_), but in the meantime,
the role of managing trusted identity in the Matrix ecosystem is farmed out to
a cluster of known trusted ecosystem partners, who run 'Matrix Identity
Servers' such as `Sydent <https://github.com/matrix-org/sydent>`_, whose role
is purely to authenticate and track 3PID logins and publish end-user public
keys.

You can host your own copy of Sydent, but this will prevent you reaching other
users in the Matrix ecosystem via their email address, and prevent them finding
you. We therefore recommend that you use one of the centralised identity servers
at ``https://matrix.org`` or ``https://vector.im`` for now.

To reiterate: the Identity server will only be used if you choose to associate
an email address with your account, or send an invite to another user via their
email address.


Password reset
==============

Users can reset their password through their client. Alternatively, a server admin
can reset a users password using the `admin API <docs/admin_api/user_admin_api.rst#reset-password>`_
or by directly editing the database as shown below.

First calculate the hash of the new password::

    $ ~/synapse/env/bin/hash_password
    Password:
    Confirm password:
    $2a$12$xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Then update the ``users`` table in the database::

    UPDATE users SET password_hash='$2a$12$xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'
        WHERE name='@test:test.com';


Synapse Development
===================

Join our developer community on Matrix: `#synapse-dev:matrix.org <https://matrix.to/#/#synapse-dev:matrix.org>`_

Before setting up a development environment for synapse, make sure you have the
system dependencies (such as the python header files) installed - see
`Installing from source <INSTALL.md#installing-from-source>`_.

To check out a synapse for development, clone the git repo into a working
directory of your choice::

    git clone https://github.com/matrix-org/synapse.git
    cd synapse

Synapse has a number of external dependencies, that are easiest
to install using pip and a virtualenv::

    python3 -m venv ./env
    source ./env/bin/activate
    pip install -e ".[all,test]"

This will run a process of downloading and installing all the needed
dependencies into a virtual env. If any dependencies fail to install,
try installing the failing modules individually::

    pip install -e "module-name"

Once this is done, you may wish to run Synapse's unit tests to
check that everything is installed correctly::

    python -m twisted.trial tests

This should end with a 'PASSED' result (note that exact numbers will
differ)::

    Ran 1337 tests in 716.064s

    PASSED (skips=15, successes=1322)

We recommend using the demo which starts 3 federated instances running on ports `8080` - `8082`

    ./demo/start.sh

(to stop, you can use `./demo/stop.sh`)

If you just want to start a single instance of the app and run it directly::

    # Create the homeserver.yaml config once
    python -m synapse.app.homeserver \
      --server-name my.domain.name \
      --config-path homeserver.yaml \
      --generate-config \
      --report-stats=[yes|no]

    # Start the app
    python -m synapse.app.homeserver --config-path homeserver.yaml




Running the Integration Tests
=============================

Synapse is accompanied by `SyTest <https://github.com/matrix-org/sytest>`_,
a Matrix homeserver integration testing suite, which uses HTTP requests to
access the API as a Matrix client would. It is able to run Synapse directly from
the source tree, so installation of the server is not required.

Testing with SyTest is recommended for verifying that changes related to the
Client-Server API are functioning correctly. See the `installation instructions
<https://github.com/matrix-org/sytest#installing>`_ for details.

Troubleshooting
===============

Need help? Join our community support room on Matrix:
`#synapse:matrix.org <https://matrix.to/#/#synapse:matrix.org>`_

Running out of File Handles
---------------------------

If synapse runs out of file handles, it typically fails badly - live-locking
at 100% CPU, and/or failing to accept new TCP connections (blocking the
connecting client).  Matrix currently can legitimately use a lot of file handles,
thanks to busy rooms like #matrix:matrix.org containing hundreds of participating
servers.  The first time a server talks in a room it will try to connect
simultaneously to all participating servers, which could exhaust the available
file descriptors between DNS queries & HTTPS sockets, especially if DNS is slow
to respond. (We need to improve the routing algorithm used to be better than
full mesh, but as of March 2019 this hasn't happened yet).

If you hit this failure mode, we recommend increasing the maximum number of
open file handles to be at least 4096 (assuming a default of 1024 or 256).
This is typically done by editing ``/etc/security/limits.conf``

Separately, Synapse may leak file handles if inbound HTTP requests get stuck
during processing - e.g. blocked behind a lock or talking to a remote server etc.
This is best diagnosed by matching up the 'Received request' and 'Processed request'
log lines and looking for any 'Processed request' lines which take more than
a few seconds to execute. Please let us know at #synapse:matrix.org if
you see this failure mode so we can help debug it, however.

Help!! Synapse is slow and eats all my RAM/CPU!
-----------------------------------------------

First, ensure you are running the latest version of Synapse, using Python 3
with a PostgreSQL database.

Synapse's architecture is quite RAM hungry currently - we deliberately
cache a lot of recent room data and metadata in RAM in order to speed up
common requests. We'll improve this in the future, but for now the easiest
way to either reduce the RAM usage (at the risk of slowing things down)
is to set the almost-undocumented ``SYNAPSE_CACHE_FACTOR`` environment
variable. The default is 0.5, which can be decreased to reduce RAM usage
in memory constrained enviroments, or increased if performance starts to
degrade.

However, degraded performance due to a low cache factor, common on
machines with slow disks, often leads to explosions in memory use due
backlogged requests. In this case, reducing the cache factor will make
things worse. Instead, try increasing it drastically. 2.0 is a good
starting value.

Using `libjemalloc <http://jemalloc.net/>`_ can also yield a significant
improvement in overall memory use, and especially in terms of giving back
RAM to the OS. To use it, the library must simply be put in the
LD_PRELOAD environment variable when launching Synapse. On Debian, this
can be done by installing the ``libjemalloc1`` package and adding this
line to ``/etc/default/matrix-synapse``::

    LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libjemalloc.so.1

This can make a significant difference on Python 2.7 - it's unclear how
much of an improvement it provides on Python 3.x.

If you're encountering high CPU use by the Synapse process itself, you
may be affected by a bug with presence tracking that leads to a
massive excess of outgoing federation requests (see `discussion
<https://github.com/matrix-org/synapse/issues/3971>`_). If metrics
indicate that your server is also issuing far more outgoing federation
requests than can be accounted for by your users' activity, this is a
likely cause. The misbehavior can be worked around by setting
``use_presence: false`` in the Synapse config file.

People can't accept room invitations from me
--------------------------------------------

The typical failure mode here is that you send an invitation to someone 
to join a room or direct chat, but when they go to accept it, they get an
error (typically along the lines of "Invalid signature"). They might see
something like the following in their logs::

    2019-09-11 19:32:04,271 - synapse.federation.transport.server - 288 - WARNING - GET-11752 - authenticate_request failed: 401: Invalid signature for server <server> with key ed25519:a_EqML: Unable to verify signature for <server>

This is normally caused by a misconfiguration in your reverse-proxy. See
`<docs/reverse_proxy.md>`_ and double-check that your settings are correct.

.. |support| image:: https://img.shields.io/matrix/synapse:matrix.org?label=support&logo=matrix
  :alt: (get support on #synapse:matrix.org)
  :target: https://matrix.to/#/#synapse:matrix.org

.. |development| image:: https://img.shields.io/matrix/synapse-dev:matrix.org?label=development&logo=matrix
  :alt: (discuss development on #synapse-dev:matrix.org)
  :target: https://matrix.to/#/#synapse-dev:matrix.org

.. |license| image:: https://img.shields.io/github/license/matrix-org/synapse
  :alt: (check license in LICENSE file)
  :target: LICENSE

.. |pypi| image:: https://img.shields.io/pypi/v/matrix-synapse
  :alt: (latest version released on PyPi)
  :target: https://pypi.org/project/matrix-synapse

.. |python| image:: https://img.shields.io/pypi/pyversions/matrix-synapse
  :alt: (supported python versions)
  :target: https://pypi.org/project/matrix-synapse