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Updated documentation
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Mark Qvist
parent
e36312a3cb
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8 changed files with 617 additions and 12 deletions
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@ -2148,11 +2148,6 @@ data between peers of a <code class="docutils literal notranslate"><span class="
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<span class="c1"># And create a link</span>
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<span class="n">link</span> <span class="o">=</span> <span class="n">RNS</span><span class="o">.</span><span class="n">Link</span><span class="p">(</span><span class="n">server_destination</span><span class="p">)</span>
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<span class="c1"># We set a callback that will get executed</span>
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<span class="c1"># every time a packet is received over the</span>
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<span class="c1"># link</span>
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<span class="n">link</span><span class="o">.</span><span class="n">set_packet_callback</span><span class="p">(</span><span class="n">client_message_received</span><span class="p">)</span>
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<span class="c1"># We'll also set up functions to inform the</span>
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<span class="c1"># user when the link is established or closed</span>
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<span class="n">link</span><span class="o">.</span><span class="n">set_link_established_callback</span><span class="p">(</span><span class="n">link_established</span><span class="p">)</span>
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@ -2235,7 +2230,7 @@ data between peers of a <code class="docutils literal notranslate"><span class="
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<span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="mf">1.5</span><span class="p">)</span>
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<span class="n">os</span><span class="o">.</span><span class="n">_exit</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
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<span class="c1"># When a packet is received over the link, we</span>
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<span class="c1"># When a packet is received over the channel, we</span>
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<span class="c1"># simply print out the data.</span>
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<span class="k">def</span> <span class="nf">client_message_received</span><span class="p">(</span><span class="n">message</span><span class="p">):</span>
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<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">message</span><span class="p">,</span> <span class="n">StringMessage</span><span class="p">):</span>
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@ -2253,7 +2248,7 @@ data between peers of a <code class="docutils literal notranslate"><span class="
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<span class="c1"># starts up the desired program mode.</span>
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<span class="k">if</span> <span class="vm">__name__</span> <span class="o">==</span> <span class="s2">"__main__"</span><span class="p">:</span>
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<span class="k">try</span><span class="p">:</span>
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<span class="n">parser</span> <span class="o">=</span> <span class="n">argparse</span><span class="o">.</span><span class="n">ArgumentParser</span><span class="p">(</span><span class="n">description</span><span class="o">=</span><span class="s2">"Simple link example"</span><span class="p">)</span>
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<span class="n">parser</span> <span class="o">=</span> <span class="n">argparse</span><span class="o">.</span><span class="n">ArgumentParser</span><span class="p">(</span><span class="n">description</span><span class="o">=</span><span class="s2">"Simple channel example"</span><span class="p">)</span>
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<span class="n">parser</span><span class="o">.</span><span class="n">add_argument</span><span class="p">(</span>
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<span class="s2">"-s"</span><span class="p">,</span>
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@ -2302,6 +2297,337 @@ data between peers of a <code class="docutils literal notranslate"><span class="
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</div>
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<p>This example can also be found at <a class="reference external" href="https://github.com/markqvist/Reticulum/blob/master/Examples/Channel.py">https://github.com/markqvist/Reticulum/blob/master/Examples/Channel.py</a>.</p>
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</section>
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<section id="buffer">
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<h2>Buffer<a class="headerlink" href="#buffer" title="Permalink to this heading">#</a></h2>
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<p>The <em>Buffer</em> example explores using buffered readers and writers to send
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binary data between peers of a <code class="docutils literal notranslate"><span class="pre">Link</span></code>.</p>
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="c1">##########################################################</span>
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<span class="c1"># This RNS example demonstrates how to set up a link to #</span>
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<span class="c1"># a destination, and pass binary data over it using a #</span>
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<span class="c1"># using a channel buffer. #</span>
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<span class="c1">##########################################################</span>
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<span class="kn">from</span> <span class="nn">__future__</span> <span class="kn">import</span> <span class="n">annotations</span>
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<span class="kn">import</span> <span class="nn">os</span>
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<span class="kn">import</span> <span class="nn">sys</span>
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<span class="kn">import</span> <span class="nn">time</span>
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<span class="kn">import</span> <span class="nn">argparse</span>
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<span class="kn">from</span> <span class="nn">datetime</span> <span class="kn">import</span> <span class="n">datetime</span>
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<span class="kn">import</span> <span class="nn">RNS</span>
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<span class="kn">from</span> <span class="nn">RNS.vendor</span> <span class="kn">import</span> <span class="n">umsgpack</span>
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<span class="c1"># Let's define an app name. We'll use this for all</span>
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<span class="c1"># destinations we create. Since this echo example</span>
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<span class="c1"># is part of a range of example utilities, we'll put</span>
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<span class="c1"># them all within the app namespace "example_utilities"</span>
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<span class="n">APP_NAME</span> <span class="o">=</span> <span class="s2">"example_utilities"</span>
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<span class="c1">##########################################################</span>
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<span class="c1">#### Server Part #########################################</span>
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<span class="c1">##########################################################</span>
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<span class="c1"># A reference to the latest client link that connected</span>
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<span class="n">latest_client_link</span> <span class="o">=</span> <span class="kc">None</span>
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<span class="c1"># A reference to the latest buffer object</span>
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<span class="n">latest_buffer</span> <span class="o">=</span> <span class="kc">None</span>
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<span class="c1"># This initialisation is executed when the users chooses</span>
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<span class="c1"># to run as a server</span>
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<span class="k">def</span> <span class="nf">server</span><span class="p">(</span><span class="n">configpath</span><span class="p">):</span>
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<span class="c1"># We must first initialise Reticulum</span>
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<span class="n">reticulum</span> <span class="o">=</span> <span class="n">RNS</span><span class="o">.</span><span class="n">Reticulum</span><span class="p">(</span><span class="n">configpath</span><span class="p">)</span>
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<span class="c1"># Randomly create a new identity for our link example</span>
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<span class="n">server_identity</span> <span class="o">=</span> <span class="n">RNS</span><span class="o">.</span><span class="n">Identity</span><span class="p">()</span>
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<span class="c1"># We create a destination that clients can connect to. We</span>
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<span class="c1"># want clients to create links to this destination, so we</span>
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<span class="c1"># need to create a "single" destination type.</span>
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<span class="n">server_destination</span> <span class="o">=</span> <span class="n">RNS</span><span class="o">.</span><span class="n">Destination</span><span class="p">(</span>
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<span class="n">server_identity</span><span class="p">,</span>
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<span class="n">RNS</span><span class="o">.</span><span class="n">Destination</span><span class="o">.</span><span class="n">IN</span><span class="p">,</span>
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<span class="n">RNS</span><span class="o">.</span><span class="n">Destination</span><span class="o">.</span><span class="n">SINGLE</span><span class="p">,</span>
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<span class="n">APP_NAME</span><span class="p">,</span>
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<span class="s2">"bufferexample"</span>
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<span class="p">)</span>
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<span class="c1"># We configure a function that will get called every time</span>
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<span class="c1"># a new client creates a link to this destination.</span>
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<span class="n">server_destination</span><span class="o">.</span><span class="n">set_link_established_callback</span><span class="p">(</span><span class="n">client_connected</span><span class="p">)</span>
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<span class="c1"># Everything's ready!</span>
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<span class="c1"># Let's Wait for client requests or user input</span>
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<span class="n">server_loop</span><span class="p">(</span><span class="n">server_destination</span><span class="p">)</span>
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<span class="k">def</span> <span class="nf">server_loop</span><span class="p">(</span><span class="n">destination</span><span class="p">):</span>
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<span class="c1"># Let the user know that everything is ready</span>
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<span class="n">RNS</span><span class="o">.</span><span class="n">log</span><span class="p">(</span>
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<span class="s2">"Link example "</span><span class="o">+</span>
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<span class="n">RNS</span><span class="o">.</span><span class="n">prettyhexrep</span><span class="p">(</span><span class="n">destination</span><span class="o">.</span><span class="n">hash</span><span class="p">)</span><span class="o">+</span>
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<span class="s2">" running, waiting for a connection."</span>
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<span class="p">)</span>
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<span class="n">RNS</span><span class="o">.</span><span class="n">log</span><span class="p">(</span><span class="s2">"Hit enter to manually send an announce (Ctrl-C to quit)"</span><span class="p">)</span>
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<span class="c1"># We enter a loop that runs until the users exits.</span>
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<span class="c1"># If the user hits enter, we will announce our server</span>
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<span class="c1"># destination on the network, which will let clients</span>
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<span class="c1"># know how to create messages directed towards it.</span>
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<span class="k">while</span> <span class="kc">True</span><span class="p">:</span>
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<span class="n">entered</span> <span class="o">=</span> <span class="nb">input</span><span class="p">()</span>
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<span class="n">destination</span><span class="o">.</span><span class="n">announce</span><span class="p">()</span>
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<span class="n">RNS</span><span class="o">.</span><span class="n">log</span><span class="p">(</span><span class="s2">"Sent announce from "</span><span class="o">+</span><span class="n">RNS</span><span class="o">.</span><span class="n">prettyhexrep</span><span class="p">(</span><span class="n">destination</span><span class="o">.</span><span class="n">hash</span><span class="p">))</span>
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<span class="c1"># When a client establishes a link to our server</span>
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<span class="c1"># destination, this function will be called with</span>
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<span class="c1"># a reference to the link.</span>
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<span class="k">def</span> <span class="nf">client_connected</span><span class="p">(</span><span class="n">link</span><span class="p">):</span>
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<span class="k">global</span> <span class="n">latest_client_link</span><span class="p">,</span> <span class="n">latest_buffer</span>
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<span class="n">latest_client_link</span> <span class="o">=</span> <span class="n">link</span>
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<span class="n">RNS</span><span class="o">.</span><span class="n">log</span><span class="p">(</span><span class="s2">"Client connected"</span><span class="p">)</span>
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<span class="n">link</span><span class="o">.</span><span class="n">set_link_closed_callback</span><span class="p">(</span><span class="n">client_disconnected</span><span class="p">)</span>
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<span class="c1"># If a new connection is received, the old reader</span>
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<span class="c1"># needs to be disconnected.</span>
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<span class="k">if</span> <span class="n">latest_buffer</span><span class="p">:</span>
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<span class="n">latest_buffer</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
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<span class="c1"># Create buffer objects.</span>
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<span class="c1"># The stream_id parameter to these functions is</span>
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<span class="c1"># a bit like a file descriptor, except that it</span>
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<span class="c1"># is unique to the *receiver*.</span>
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<span class="c1">#</span>
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<span class="c1"># In this example, both the reader and the writer</span>
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<span class="c1"># use stream_id = 0, but there are actually two</span>
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<span class="c1"># separate unidirectional streams flowing in</span>
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<span class="c1"># opposite directions.</span>
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<span class="c1">#</span>
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<span class="n">channel</span> <span class="o">=</span> <span class="n">link</span><span class="o">.</span><span class="n">get_channel</span><span class="p">()</span>
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<span class="n">latest_buffer</span> <span class="o">=</span> <span class="n">RNS</span><span class="o">.</span><span class="n">Buffer</span><span class="o">.</span><span class="n">create_bidirectional_buffer</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="n">channel</span><span class="p">,</span> <span class="n">server_buffer_ready</span><span class="p">)</span>
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<span class="k">def</span> <span class="nf">client_disconnected</span><span class="p">(</span><span class="n">link</span><span class="p">):</span>
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<span class="n">RNS</span><span class="o">.</span><span class="n">log</span><span class="p">(</span><span class="s2">"Client disconnected"</span><span class="p">)</span>
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<span class="k">def</span> <span class="nf">server_buffer_ready</span><span class="p">(</span><span class="n">ready_bytes</span><span class="p">:</span> <span class="nb">int</span><span class="p">):</span>
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<span class="sd">"""</span>
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<span class="sd"> Callback from buffer when buffer has data available</span>
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<span class="sd"> :param ready_bytes: The number of bytes ready to read</span>
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<span class="sd"> """</span>
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<span class="k">global</span> <span class="n">latest_buffer</span>
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<span class="n">data</span> <span class="o">=</span> <span class="n">latest_buffer</span><span class="o">.</span><span class="n">read</span><span class="p">(</span><span class="n">ready_bytes</span><span class="p">)</span>
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<span class="n">data</span> <span class="o">=</span> <span class="n">data</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="s2">"utf-8"</span><span class="p">)</span>
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<span class="n">RNS</span><span class="o">.</span><span class="n">log</span><span class="p">(</span><span class="s2">"Received data on the link: "</span> <span class="o">+</span> <span class="n">data</span><span class="p">)</span>
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<span class="n">reply_message</span> <span class="o">=</span> <span class="s2">"I received </span><span class="se">\"</span><span class="s2">"</span><span class="o">+</span><span class="n">data</span><span class="o">+</span><span class="s2">"</span><span class="se">\"</span><span class="s2"> over the buffer"</span>
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<span class="n">reply_message</span> <span class="o">=</span> <span class="n">reply_message</span><span class="o">.</span><span class="n">encode</span><span class="p">(</span><span class="s2">"utf-8"</span><span class="p">)</span>
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<span class="n">latest_buffer</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">reply_message</span><span class="p">)</span>
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<span class="n">latest_buffer</span><span class="o">.</span><span class="n">flush</span><span class="p">()</span>
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<span class="c1">##########################################################</span>
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<span class="c1">#### Client Part #########################################</span>
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<span class="c1">##########################################################</span>
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<span class="c1"># A reference to the server link</span>
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<span class="n">server_link</span> <span class="o">=</span> <span class="kc">None</span>
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<span class="c1"># A reference to the buffer object, needed to share the</span>
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<span class="c1"># object from the link connected callback to the client</span>
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<span class="c1"># loop.</span>
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<span class="n">buffer</span> <span class="o">=</span> <span class="kc">None</span>
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<span class="c1"># This initialisation is executed when the users chooses</span>
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<span class="c1"># to run as a client</span>
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<span class="k">def</span> <span class="nf">client</span><span class="p">(</span><span class="n">destination_hexhash</span><span class="p">,</span> <span class="n">configpath</span><span class="p">):</span>
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<span class="c1"># We need a binary representation of the destination</span>
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<span class="c1"># hash that was entered on the command line</span>
|
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<span class="k">try</span><span class="p">:</span>
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<span class="n">dest_len</span> <span class="o">=</span> <span class="p">(</span><span class="n">RNS</span><span class="o">.</span><span class="n">Reticulum</span><span class="o">.</span><span class="n">TRUNCATED_HASHLENGTH</span><span class="o">//</span><span class="mi">8</span><span class="p">)</span><span class="o">*</span><span class="mi">2</span>
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<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">destination_hexhash</span><span class="p">)</span> <span class="o">!=</span> <span class="n">dest_len</span><span class="p">:</span>
|
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<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span>
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<span class="s2">"Destination length is invalid, must be </span><span class="si">{hex}</span><span class="s2"> hexadecimal characters (</span><span class="si">{byte}</span><span class="s2"> bytes)."</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="nb">hex</span><span class="o">=</span><span class="n">dest_len</span><span class="p">,</span> <span class="n">byte</span><span class="o">=</span><span class="n">dest_len</span><span class="o">//</span><span class="mi">2</span><span class="p">)</span>
|
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<span class="p">)</span>
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|
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<span class="n">destination_hash</span> <span class="o">=</span> <span class="nb">bytes</span><span class="o">.</span><span class="n">fromhex</span><span class="p">(</span><span class="n">destination_hexhash</span><span class="p">)</span>
|
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<span class="k">except</span><span class="p">:</span>
|
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<span class="n">RNS</span><span class="o">.</span><span class="n">log</span><span class="p">(</span><span class="s2">"Invalid destination entered. Check your input!</span><span class="se">\n</span><span class="s2">"</span><span class="p">)</span>
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<span class="n">exit</span><span class="p">()</span>
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<span class="c1"># We must first initialise Reticulum</span>
|
||||
<span class="n">reticulum</span> <span class="o">=</span> <span class="n">RNS</span><span class="o">.</span><span class="n">Reticulum</span><span class="p">(</span><span class="n">configpath</span><span class="p">)</span>
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<span class="c1"># Check if we know a path to the destination</span>
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<span class="k">if</span> <span class="ow">not</span> <span class="n">RNS</span><span class="o">.</span><span class="n">Transport</span><span class="o">.</span><span class="n">has_path</span><span class="p">(</span><span class="n">destination_hash</span><span class="p">):</span>
|
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<span class="n">RNS</span><span class="o">.</span><span class="n">log</span><span class="p">(</span><span class="s2">"Destination is not yet known. Requesting path and waiting for announce to arrive..."</span><span class="p">)</span>
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<span class="n">RNS</span><span class="o">.</span><span class="n">Transport</span><span class="o">.</span><span class="n">request_path</span><span class="p">(</span><span class="n">destination_hash</span><span class="p">)</span>
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<span class="k">while</span> <span class="ow">not</span> <span class="n">RNS</span><span class="o">.</span><span class="n">Transport</span><span class="o">.</span><span class="n">has_path</span><span class="p">(</span><span class="n">destination_hash</span><span class="p">):</span>
|
||||
<span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="mf">0.1</span><span class="p">)</span>
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||||
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||||
<span class="c1"># Recall the server identity</span>
|
||||
<span class="n">server_identity</span> <span class="o">=</span> <span class="n">RNS</span><span class="o">.</span><span class="n">Identity</span><span class="o">.</span><span class="n">recall</span><span class="p">(</span><span class="n">destination_hash</span><span class="p">)</span>
|
||||
|
||||
<span class="c1"># Inform the user that we'll begin connecting</span>
|
||||
<span class="n">RNS</span><span class="o">.</span><span class="n">log</span><span class="p">(</span><span class="s2">"Establishing link with server..."</span><span class="p">)</span>
|
||||
|
||||
<span class="c1"># When the server identity is known, we set</span>
|
||||
<span class="c1"># up a destination</span>
|
||||
<span class="n">server_destination</span> <span class="o">=</span> <span class="n">RNS</span><span class="o">.</span><span class="n">Destination</span><span class="p">(</span>
|
||||
<span class="n">server_identity</span><span class="p">,</span>
|
||||
<span class="n">RNS</span><span class="o">.</span><span class="n">Destination</span><span class="o">.</span><span class="n">OUT</span><span class="p">,</span>
|
||||
<span class="n">RNS</span><span class="o">.</span><span class="n">Destination</span><span class="o">.</span><span class="n">SINGLE</span><span class="p">,</span>
|
||||
<span class="n">APP_NAME</span><span class="p">,</span>
|
||||
<span class="s2">"bufferexample"</span>
|
||||
<span class="p">)</span>
|
||||
|
||||
<span class="c1"># And create a link</span>
|
||||
<span class="n">link</span> <span class="o">=</span> <span class="n">RNS</span><span class="o">.</span><span class="n">Link</span><span class="p">(</span><span class="n">server_destination</span><span class="p">)</span>
|
||||
|
||||
<span class="c1"># We'll also set up functions to inform the</span>
|
||||
<span class="c1"># user when the link is established or closed</span>
|
||||
<span class="n">link</span><span class="o">.</span><span class="n">set_link_established_callback</span><span class="p">(</span><span class="n">link_established</span><span class="p">)</span>
|
||||
<span class="n">link</span><span class="o">.</span><span class="n">set_link_closed_callback</span><span class="p">(</span><span class="n">link_closed</span><span class="p">)</span>
|
||||
|
||||
<span class="c1"># Everything is set up, so let's enter a loop</span>
|
||||
<span class="c1"># for the user to interact with the example</span>
|
||||
<span class="n">client_loop</span><span class="p">()</span>
|
||||
|
||||
<span class="k">def</span> <span class="nf">client_loop</span><span class="p">():</span>
|
||||
<span class="k">global</span> <span class="n">server_link</span>
|
||||
|
||||
<span class="c1"># Wait for the link to become active</span>
|
||||
<span class="k">while</span> <span class="ow">not</span> <span class="n">server_link</span><span class="p">:</span>
|
||||
<span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="mf">0.1</span><span class="p">)</span>
|
||||
|
||||
<span class="n">should_quit</span> <span class="o">=</span> <span class="kc">False</span>
|
||||
<span class="k">while</span> <span class="ow">not</span> <span class="n">should_quit</span><span class="p">:</span>
|
||||
<span class="k">try</span><span class="p">:</span>
|
||||
<span class="nb">print</span><span class="p">(</span><span class="s2">"> "</span><span class="p">,</span> <span class="n">end</span><span class="o">=</span><span class="s2">" "</span><span class="p">)</span>
|
||||
<span class="n">text</span> <span class="o">=</span> <span class="nb">input</span><span class="p">()</span>
|
||||
|
||||
<span class="c1"># Check if we should quit the example</span>
|
||||
<span class="k">if</span> <span class="n">text</span> <span class="o">==</span> <span class="s2">"quit"</span> <span class="ow">or</span> <span class="n">text</span> <span class="o">==</span> <span class="s2">"q"</span> <span class="ow">or</span> <span class="n">text</span> <span class="o">==</span> <span class="s2">"exit"</span><span class="p">:</span>
|
||||
<span class="n">should_quit</span> <span class="o">=</span> <span class="kc">True</span>
|
||||
<span class="n">server_link</span><span class="o">.</span><span class="n">teardown</span><span class="p">()</span>
|
||||
<span class="k">else</span><span class="p">:</span>
|
||||
<span class="c1"># Otherwise, encode the text and write it to the buffer.</span>
|
||||
<span class="n">text</span> <span class="o">=</span> <span class="n">text</span><span class="o">.</span><span class="n">encode</span><span class="p">(</span><span class="s2">"utf-8"</span><span class="p">)</span>
|
||||
<span class="n">buffer</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">text</span><span class="p">)</span>
|
||||
<span class="c1"># Flush the buffer to force the data to be sent.</span>
|
||||
<span class="n">buffer</span><span class="o">.</span><span class="n">flush</span><span class="p">()</span>
|
||||
|
||||
|
||||
<span class="k">except</span> <span class="ne">Exception</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span>
|
||||
<span class="n">RNS</span><span class="o">.</span><span class="n">log</span><span class="p">(</span><span class="s2">"Error while sending data over the link: "</span><span class="o">+</span><span class="nb">str</span><span class="p">(</span><span class="n">e</span><span class="p">))</span>
|
||||
<span class="n">should_quit</span> <span class="o">=</span> <span class="kc">True</span>
|
||||
<span class="n">server_link</span><span class="o">.</span><span class="n">teardown</span><span class="p">()</span>
|
||||
|
||||
<span class="c1"># This function is called when a link</span>
|
||||
<span class="c1"># has been established with the server</span>
|
||||
<span class="k">def</span> <span class="nf">link_established</span><span class="p">(</span><span class="n">link</span><span class="p">):</span>
|
||||
<span class="c1"># We store a reference to the link</span>
|
||||
<span class="c1"># instance for later use</span>
|
||||
<span class="k">global</span> <span class="n">server_link</span><span class="p">,</span> <span class="n">buffer</span>
|
||||
<span class="n">server_link</span> <span class="o">=</span> <span class="n">link</span>
|
||||
|
||||
<span class="c1"># Create buffer, see server_client_connected() for</span>
|
||||
<span class="c1"># more detail about setting up the buffer.</span>
|
||||
<span class="n">channel</span> <span class="o">=</span> <span class="n">link</span><span class="o">.</span><span class="n">get_channel</span><span class="p">()</span>
|
||||
<span class="n">buffer</span> <span class="o">=</span> <span class="n">RNS</span><span class="o">.</span><span class="n">Buffer</span><span class="o">.</span><span class="n">create_bidirectional_buffer</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="n">channel</span><span class="p">,</span> <span class="n">client_buffer_ready</span><span class="p">)</span>
|
||||
|
||||
<span class="c1"># Inform the user that the server is</span>
|
||||
<span class="c1"># connected</span>
|
||||
<span class="n">RNS</span><span class="o">.</span><span class="n">log</span><span class="p">(</span><span class="s2">"Link established with server, enter some text to send, or </span><span class="se">\"</span><span class="s2">quit</span><span class="se">\"</span><span class="s2"> to quit"</span><span class="p">)</span>
|
||||
|
||||
<span class="c1"># When a link is closed, we'll inform the</span>
|
||||
<span class="c1"># user, and exit the program</span>
|
||||
<span class="k">def</span> <span class="nf">link_closed</span><span class="p">(</span><span class="n">link</span><span class="p">):</span>
|
||||
<span class="k">if</span> <span class="n">link</span><span class="o">.</span><span class="n">teardown_reason</span> <span class="o">==</span> <span class="n">RNS</span><span class="o">.</span><span class="n">Link</span><span class="o">.</span><span class="n">TIMEOUT</span><span class="p">:</span>
|
||||
<span class="n">RNS</span><span class="o">.</span><span class="n">log</span><span class="p">(</span><span class="s2">"The link timed out, exiting now"</span><span class="p">)</span>
|
||||
<span class="k">elif</span> <span class="n">link</span><span class="o">.</span><span class="n">teardown_reason</span> <span class="o">==</span> <span class="n">RNS</span><span class="o">.</span><span class="n">Link</span><span class="o">.</span><span class="n">DESTINATION_CLOSED</span><span class="p">:</span>
|
||||
<span class="n">RNS</span><span class="o">.</span><span class="n">log</span><span class="p">(</span><span class="s2">"The link was closed by the server, exiting now"</span><span class="p">)</span>
|
||||
<span class="k">else</span><span class="p">:</span>
|
||||
<span class="n">RNS</span><span class="o">.</span><span class="n">log</span><span class="p">(</span><span class="s2">"Link closed, exiting now"</span><span class="p">)</span>
|
||||
|
||||
<span class="n">RNS</span><span class="o">.</span><span class="n">Reticulum</span><span class="o">.</span><span class="n">exit_handler</span><span class="p">()</span>
|
||||
<span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="mf">1.5</span><span class="p">)</span>
|
||||
<span class="n">os</span><span class="o">.</span><span class="n">_exit</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
|
||||
|
||||
<span class="c1"># When the buffer has new data, read it and write it to the terminal.</span>
|
||||
<span class="k">def</span> <span class="nf">client_buffer_ready</span><span class="p">(</span><span class="n">ready_bytes</span><span class="p">:</span> <span class="nb">int</span><span class="p">):</span>
|
||||
<span class="k">global</span> <span class="n">buffer</span>
|
||||
<span class="n">data</span> <span class="o">=</span> <span class="n">buffer</span><span class="o">.</span><span class="n">read</span><span class="p">(</span><span class="n">ready_bytes</span><span class="p">)</span>
|
||||
<span class="n">RNS</span><span class="o">.</span><span class="n">log</span><span class="p">(</span><span class="s2">"Received data on the link: "</span> <span class="o">+</span> <span class="n">data</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="s2">"utf-8"</span><span class="p">))</span>
|
||||
<span class="nb">print</span><span class="p">(</span><span class="s2">"> "</span><span class="p">,</span> <span class="n">end</span><span class="o">=</span><span class="s2">" "</span><span class="p">)</span>
|
||||
<span class="n">sys</span><span class="o">.</span><span class="n">stdout</span><span class="o">.</span><span class="n">flush</span><span class="p">()</span>
|
||||
|
||||
|
||||
<span class="c1">##########################################################</span>
|
||||
<span class="c1">#### Program Startup #####################################</span>
|
||||
<span class="c1">##########################################################</span>
|
||||
|
||||
<span class="c1"># This part of the program runs at startup,</span>
|
||||
<span class="c1"># and parses input of from the user, and then</span>
|
||||
<span class="c1"># starts up the desired program mode.</span>
|
||||
<span class="k">if</span> <span class="vm">__name__</span> <span class="o">==</span> <span class="s2">"__main__"</span><span class="p">:</span>
|
||||
<span class="k">try</span><span class="p">:</span>
|
||||
<span class="n">parser</span> <span class="o">=</span> <span class="n">argparse</span><span class="o">.</span><span class="n">ArgumentParser</span><span class="p">(</span><span class="n">description</span><span class="o">=</span><span class="s2">"Simple buffer example"</span><span class="p">)</span>
|
||||
|
||||
<span class="n">parser</span><span class="o">.</span><span class="n">add_argument</span><span class="p">(</span>
|
||||
<span class="s2">"-s"</span><span class="p">,</span>
|
||||
<span class="s2">"--server"</span><span class="p">,</span>
|
||||
<span class="n">action</span><span class="o">=</span><span class="s2">"store_true"</span><span class="p">,</span>
|
||||
<span class="n">help</span><span class="o">=</span><span class="s2">"wait for incoming link requests from clients"</span>
|
||||
<span class="p">)</span>
|
||||
|
||||
<span class="n">parser</span><span class="o">.</span><span class="n">add_argument</span><span class="p">(</span>
|
||||
<span class="s2">"--config"</span><span class="p">,</span>
|
||||
<span class="n">action</span><span class="o">=</span><span class="s2">"store"</span><span class="p">,</span>
|
||||
<span class="n">default</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
|
||||
<span class="n">help</span><span class="o">=</span><span class="s2">"path to alternative Reticulum config directory"</span><span class="p">,</span>
|
||||
<span class="nb">type</span><span class="o">=</span><span class="nb">str</span>
|
||||
<span class="p">)</span>
|
||||
|
||||
<span class="n">parser</span><span class="o">.</span><span class="n">add_argument</span><span class="p">(</span>
|
||||
<span class="s2">"destination"</span><span class="p">,</span>
|
||||
<span class="n">nargs</span><span class="o">=</span><span class="s2">"?"</span><span class="p">,</span>
|
||||
<span class="n">default</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
|
||||
<span class="n">help</span><span class="o">=</span><span class="s2">"hexadecimal hash of the server destination"</span><span class="p">,</span>
|
||||
<span class="nb">type</span><span class="o">=</span><span class="nb">str</span>
|
||||
<span class="p">)</span>
|
||||
|
||||
<span class="n">args</span> <span class="o">=</span> <span class="n">parser</span><span class="o">.</span><span class="n">parse_args</span><span class="p">()</span>
|
||||
|
||||
<span class="k">if</span> <span class="n">args</span><span class="o">.</span><span class="n">config</span><span class="p">:</span>
|
||||
<span class="n">configarg</span> <span class="o">=</span> <span class="n">args</span><span class="o">.</span><span class="n">config</span>
|
||||
<span class="k">else</span><span class="p">:</span>
|
||||
<span class="n">configarg</span> <span class="o">=</span> <span class="kc">None</span>
|
||||
|
||||
<span class="k">if</span> <span class="n">args</span><span class="o">.</span><span class="n">server</span><span class="p">:</span>
|
||||
<span class="n">server</span><span class="p">(</span><span class="n">configarg</span><span class="p">)</span>
|
||||
<span class="k">else</span><span class="p">:</span>
|
||||
<span class="k">if</span> <span class="p">(</span><span class="n">args</span><span class="o">.</span><span class="n">destination</span> <span class="o">==</span> <span class="kc">None</span><span class="p">):</span>
|
||||
<span class="nb">print</span><span class="p">(</span><span class="s2">""</span><span class="p">)</span>
|
||||
<span class="n">parser</span><span class="o">.</span><span class="n">print_help</span><span class="p">()</span>
|
||||
<span class="nb">print</span><span class="p">(</span><span class="s2">""</span><span class="p">)</span>
|
||||
<span class="k">else</span><span class="p">:</span>
|
||||
<span class="n">client</span><span class="p">(</span><span class="n">args</span><span class="o">.</span><span class="n">destination</span><span class="p">,</span> <span class="n">configarg</span><span class="p">)</span>
|
||||
|
||||
<span class="k">except</span> <span class="ne">KeyboardInterrupt</span><span class="p">:</span>
|
||||
<span class="nb">print</span><span class="p">(</span><span class="s2">""</span><span class="p">)</span>
|
||||
<span class="n">exit</span><span class="p">()</span>
|
||||
</pre></div>
|
||||
</div>
|
||||
<p>This example can also be found at <a class="reference external" href="https://github.com/markqvist/Reticulum/blob/master/Examples/Buffer.py">https://github.com/markqvist/Reticulum/blob/master/Examples/Buffer.py</a>.</p>
|
||||
</section>
|
||||
<section id="filetransfer">
|
||||
<span id="example-filetransfer"></span><h2>Filetransfer<a class="headerlink" href="#filetransfer" title="Permalink to this heading">#</a></h2>
|
||||
<p>The <em>Filetransfer</em> example implements a basic file-server program that
|
||||
|
|
@ -2983,6 +3309,7 @@ interface to efficiently pass files of any size over a Reticulum <a class="refer
|
|||
<li><a class="reference internal" href="#example-identify">Identification</a></li>
|
||||
<li><a class="reference internal" href="#requests-responses">Requests & Responses</a></li>
|
||||
<li><a class="reference internal" href="#channel">Channel</a></li>
|
||||
<li><a class="reference internal" href="#buffer">Buffer</a></li>
|
||||
<li><a class="reference internal" href="#filetransfer">Filetransfer</a></li>
|
||||
</ul>
|
||||
</li>
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue