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12
docs/manual/_sources/examples.rst.txt
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@ -68,6 +68,18 @@ destination, and passing traffic back and forth over the link.
This example can also be found at `<https://github.com/markqvist/Reticulum/blob/master/Examples/Link.py>`_. This example can also be found at `<https://github.com/markqvist/Reticulum/blob/master/Examples/Link.py>`_.
.. _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 `<https://github.com/markqvist/Reticulum/blob/master/Examples/Identify.py>`_.
.. _example-filetransfer: .. _example-filetransfer:
Filetransfer Filetransfer

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docs/manual/_sources/whatis.rst.txt
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@ -2,7 +2,9 @@
What is Reticulum? What is Reticulum?
****************** ******************
Reticulum is a cryptography-based networking stack for wide-area networks built on readily available hardware, and can operate even with very high latency and extremely low bandwidth. Reticulum allows you to build very wide-area networks with off-the-shelf tools, and offers end-to-end encryption, autoconfiguring cryptographically backed multi-hop transport, efficient addressing, unforgeable packet acknowledgements and more. Reticulum is a cryptography-based networking stack for wide-area networks built on readily available hardware, and can operate even with very high latency and extremely low bandwidth.
Reticulum allows you to build very wide-area networks with off-the-shelf tools, and offers end-to-end encryption, autoconfiguring cryptographically backed multi-hop transport, efficient addressing, unforgeable packet acknowledgements and more.
Reticulum is a complete networking stack, and does not use 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. Reticulum is a complete networking stack, and does not use 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.
@ -43,7 +45,7 @@ What does Reticulum Offer?
* A variety of supported interface types * A variety of supported interface types
* An intuitive and easy-to-use API * An intuitive and developer-friendly API
* Reliable and efficient transfer of arbritrary amounts of data * Reliable and efficient transfer of arbritrary amounts of data

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@ -1044,6 +1044,324 @@ destination, and passing traffic back and forth over the link.</p>
</div> </div>
<p>This example can also be found at <a class="reference external" href="https://github.com/markqvist/Reticulum/blob/master/Examples/Link.py">https://github.com/markqvist/Reticulum/blob/master/Examples/Link.py</a>.</p> <p>This example can also be found at <a class="reference external" href="https://github.com/markqvist/Reticulum/blob/master/Examples/Link.py">https://github.com/markqvist/Reticulum/blob/master/Examples/Link.py</a>.</p>
</div> </div>
<div class="section" id="example-identify">
<span id="identification"></span><h2>Identification<a class="headerlink" href="#example-identify" title="Permalink to this headline"></a></h2>
<p>The <em>Identify</em> example explores identifying an intiator of a link, once
the link has been established.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="c1">##########################################################</span>
<span class="c1"># This RNS example demonstrates how to set up a link to #</span>
<span class="c1"># a destination, and identify the initiator to it&#39;s peer #</span>
<span class="c1">##########################################################</span>
<span class="kn">import</span> <span class="nn">os</span>
<span class="kn">import</span> <span class="nn">sys</span>
<span class="kn">import</span> <span class="nn">time</span>
<span class="kn">import</span> <span class="nn">argparse</span>
<span class="kn">import</span> <span class="nn">RNS</span>
<span class="c1"># Let&#39;s define an app name. We&#39;ll use this for all</span>
<span class="c1"># destinations we create. Since this echo example</span>
<span class="c1"># is part of a range of example utilities, we&#39;ll put</span>
<span class="c1"># them all within the app namespace &quot;example_utilities&quot;</span>
<span class="n">APP_NAME</span> <span class="o">=</span> <span class="s2">&quot;example_utilities&quot;</span>
<span class="c1">##########################################################</span>
<span class="c1">#### Server Part #########################################</span>
<span class="c1">##########################################################</span>
<span class="c1"># A reference to the latest client link that connected</span>
<span class="n">latest_client_link</span> <span class="o">=</span> <span class="kc">None</span>
<span class="c1"># This initialisation is executed when the users chooses</span>
<span class="c1"># to run as a server</span>
<span class="k">def</span> <span class="nf">server</span><span class="p">(</span><span class="n">configpath</span><span class="p">):</span>
<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>
<span class="c1"># Randomly create a new identity for our link example</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="p">()</span>
<span class="c1"># We create a destination that clients can connect to. We</span>
<span class="c1"># want clients to create links to this destination, so we</span>
<span class="c1"># need to create a &quot;single&quot; destination type.</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">IN</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">&quot;identifyexample&quot;</span>
<span class="p">)</span>
<span class="c1"># We configure a function that will get called every time</span>
<span class="c1"># a new client creates a link to this destination.</span>
<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>
<span class="c1"># Everything&#39;s ready!</span>
<span class="c1"># Let&#39;s Wait for client requests or user input</span>
<span class="n">server_loop</span><span class="p">(</span><span class="n">server_destination</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">server_loop</span><span class="p">(</span><span class="n">destination</span><span class="p">):</span>
<span class="c1"># Let the user know that everything is ready</span>
<span class="n">RNS</span><span class="o">.</span><span class="n">log</span><span class="p">(</span>
<span class="s2">&quot;Link identification example &quot;</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><span class="o">+</span>
<span class="s2">&quot; running, waiting for a connection.&quot;</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">&quot;Hit enter to manually send an announce (Ctrl-C to quit)&quot;</span><span class="p">)</span>
<span class="c1"># We enter a loop that runs until the users exits.</span>
<span class="c1"># If the user hits enter, we will announce our server</span>
<span class="c1"># destination on the network, which will let clients</span>
<span class="c1"># know how to create messages directed towards it.</span>
<span class="k">while</span> <span class="kc">True</span><span class="p">:</span>
<span class="n">entered</span> <span class="o">=</span> <span class="nb">input</span><span class="p">()</span>
<span class="n">destination</span><span class="o">.</span><span class="n">announce</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">&quot;Sent announce from &quot;</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>
<span class="c1"># When a client establishes a link to our server</span>
<span class="c1"># destination, this function will be called with</span>
<span class="c1"># a reference to the link.</span>
<span class="k">def</span> <span class="nf">client_connected</span><span class="p">(</span><span class="n">link</span><span class="p">):</span>
<span class="k">global</span> <span class="n">latest_client_link</span>
<span class="n">RNS</span><span class="o">.</span><span class="n">log</span><span class="p">(</span><span class="s2">&quot;Client connected&quot;</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">client_disconnected</span><span class="p">)</span>
<span class="n">link</span><span class="o">.</span><span class="n">set_packet_callback</span><span class="p">(</span><span class="n">server_packet_received</span><span class="p">)</span>
<span class="n">link</span><span class="o">.</span><span class="n">set_remote_identified_callback</span><span class="p">(</span><span class="n">remote_identified</span><span class="p">)</span>
<span class="n">latest_client_link</span> <span class="o">=</span> <span class="n">link</span>
<span class="k">def</span> <span class="nf">client_disconnected</span><span class="p">(</span><span class="n">link</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">&quot;Client disconnected&quot;</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">remote_identified</span><span class="p">(</span><span class="n">identity</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">&quot;Remote identified as: &quot;</span><span class="o">+</span><span class="nb">str</span><span class="p">(</span><span class="n">identity</span><span class="p">))</span>
<span class="k">def</span> <span class="nf">server_packet_received</span><span class="p">(</span><span class="n">message</span><span class="p">,</span> <span class="n">packet</span><span class="p">):</span>
<span class="k">global</span> <span class="n">latest_client_link</span>
<span class="c1"># Get the originating identity for display</span>
<span class="n">remote_peer</span> <span class="o">=</span> <span class="s2">&quot;unidentified peer&quot;</span>
<span class="k">if</span> <span class="n">packet</span><span class="o">.</span><span class="n">link</span><span class="o">.</span><span class="n">get_remote_identity</span><span class="p">()</span> <span class="o">!=</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">remote_peer</span> <span class="o">=</span> <span class="nb">str</span><span class="p">(</span><span class="n">packet</span><span class="o">.</span><span class="n">link</span><span class="o">.</span><span class="n">get_remote_identity</span><span class="p">())</span>
<span class="c1"># When data is received over any active link,</span>
<span class="c1"># it will all be directed to the last client</span>
<span class="c1"># that connected.</span>
<span class="n">text</span> <span class="o">=</span> <span class="n">message</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="s2">&quot;utf-8&quot;</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">&quot;Received data from &quot;</span><span class="o">+</span><span class="n">remote_peer</span><span class="o">+</span><span class="s2">&quot;: &quot;</span><span class="o">+</span><span class="n">text</span><span class="p">)</span>
<span class="n">reply_text</span> <span class="o">=</span> <span class="s2">&quot;I received </span><span class="se">\&quot;</span><span class="s2">&quot;</span><span class="o">+</span><span class="n">text</span><span class="o">+</span><span class="s2">&quot;</span><span class="se">\&quot;</span><span class="s2"> over the link from &quot;</span><span class="o">+</span><span class="n">remote_peer</span>
<span class="n">reply_data</span> <span class="o">=</span> <span class="n">reply_text</span><span class="o">.</span><span class="n">encode</span><span class="p">(</span><span class="s2">&quot;utf-8&quot;</span><span class="p">)</span>
<span class="n">RNS</span><span class="o">.</span><span class="n">Packet</span><span class="p">(</span><span class="n">latest_client_link</span><span class="p">,</span> <span class="n">reply_data</span><span class="p">)</span><span class="o">.</span><span class="n">send</span><span class="p">()</span>
<span class="c1">##########################################################</span>
<span class="c1">#### Client Part #########################################</span>
<span class="c1">##########################################################</span>
<span class="c1"># A reference to the server link</span>
<span class="n">server_link</span> <span class="o">=</span> <span class="kc">None</span>
<span class="c1"># A reference to the client identity</span>
<span class="n">client_identity</span> <span class="o">=</span> <span class="kc">None</span>
<span class="c1"># This initialisation is executed when the users chooses</span>
<span class="c1"># to run as a client</span>
<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>
<span class="k">global</span> <span class="n">client_identity</span>
<span class="c1"># We need a binary representation of the destination</span>
<span class="c1"># hash that was entered on the command line</span>
<span class="k">try</span><span class="p">:</span>
<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="mi">20</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">&quot;Destination length is invalid, must be 20 hexadecimal characters (10 bytes)&quot;</span><span class="p">)</span>
<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>
<span class="k">except</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">&quot;Invalid destination entered. Check your input!</span><span class="se">\n</span><span class="s2">&quot;</span><span class="p">)</span>
<span class="n">exit</span><span class="p">()</span>
<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>
<span class="c1"># Create a new client identity</span>
<span class="n">client_identity</span> <span class="o">=</span> <span class="n">RNS</span><span class="o">.</span><span class="n">Identity</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">&quot;Client created new identity &quot;</span><span class="o">+</span>
<span class="nb">str</span><span class="p">(</span><span class="n">client_identity</span><span class="p">)</span>
<span class="p">)</span>
<span class="c1"># Check if we know a path to the destination</span>
<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>
<span class="n">RNS</span><span class="o">.</span><span class="n">log</span><span class="p">(</span><span class="s2">&quot;Destination is not yet known. Requesting path and waiting for announce to arrive...&quot;</span><span class="p">)</span>
<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>
<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>
<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&#39;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">&quot;Establishing link with server...&quot;</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">&quot;identifyexample&quot;</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 set a callback that will get executed</span>
<span class="c1"># every time a packet is received over the</span>
<span class="c1"># link</span>
<span class="n">link</span><span class="o">.</span><span class="n">set_packet_callback</span><span class="p">(</span><span class="n">client_packet_received</span><span class="p">)</span>
<span class="c1"># We&#39;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&#39;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">&quot;&gt; &quot;</span><span class="p">,</span> <span class="n">end</span><span class="o">=</span><span class="s2">&quot; &quot;</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">&quot;quit&quot;</span> <span class="ow">or</span> <span class="n">text</span> <span class="o">==</span> <span class="s2">&quot;q&quot;</span> <span class="ow">or</span> <span class="n">text</span> <span class="o">==</span> <span class="s2">&quot;exit&quot;</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"># If not, send the entered text over the link</span>
<span class="k">if</span> <span class="n">text</span> <span class="o">!=</span> <span class="s2">&quot;&quot;</span><span class="p">:</span>
<span class="n">data</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">&quot;utf-8&quot;</span><span class="p">)</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">data</span><span class="p">)</span> <span class="o">&lt;=</span> <span class="n">RNS</span><span class="o">.</span><span class="n">Link</span><span class="o">.</span><span class="n">MDU</span><span class="p">:</span>
<span class="n">RNS</span><span class="o">.</span><span class="n">Packet</span><span class="p">(</span><span class="n">server_link</span><span class="p">,</span> <span class="n">data</span><span class="p">)</span><span class="o">.</span><span class="n">send</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">&quot;Cannot send this packet, the data size of &quot;</span><span class="o">+</span>
<span class="nb">str</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">data</span><span class="p">))</span><span class="o">+</span><span class="s2">&quot; bytes exceeds the link packet MDU of &quot;</span><span class="o">+</span>
<span class="nb">str</span><span class="p">(</span><span class="n">RNS</span><span class="o">.</span><span class="n">Link</span><span class="o">.</span><span class="n">MDU</span><span class="p">)</span><span class="o">+</span><span class="s2">&quot; bytes&quot;</span><span class="p">,</span>
<span class="n">RNS</span><span class="o">.</span><span class="n">LOG_ERROR</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">&quot;Error while sending data over the link: &quot;</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">client_identity</span>
<span class="n">server_link</span> <span class="o">=</span> <span class="n">link</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">&quot;Link established with server, identifying to remote peer...&quot;</span><span class="p">)</span>
<span class="n">link</span><span class="o">.</span><span class="n">identify</span><span class="p">(</span><span class="n">client_identity</span><span class="p">)</span>
<span class="c1"># When a link is closed, we&#39;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">&quot;The link timed out, exiting now&quot;</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">&quot;The link was closed by the server, exiting now&quot;</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">&quot;Link closed, exiting now&quot;</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 a packet is received over the link, we</span>
<span class="c1"># simply print out the data.</span>
<span class="k">def</span> <span class="nf">client_packet_received</span><span class="p">(</span><span class="n">message</span><span class="p">,</span> <span class="n">packet</span><span class="p">):</span>
<span class="n">text</span> <span class="o">=</span> <span class="n">message</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="s2">&quot;utf-8&quot;</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">&quot;Received data on the link: &quot;</span><span class="o">+</span><span class="n">text</span><span class="p">)</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;&gt; &quot;</span><span class="p">,</span> <span class="n">end</span><span class="o">=</span><span class="s2">&quot; &quot;</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">&quot;__main__&quot;</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">&quot;Simple link example&quot;</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">&quot;-s&quot;</span><span class="p">,</span>
<span class="s2">&quot;--server&quot;</span><span class="p">,</span>
<span class="n">action</span><span class="o">=</span><span class="s2">&quot;store_true&quot;</span><span class="p">,</span>
<span class="n">help</span><span class="o">=</span><span class="s2">&quot;wait for incoming link requests from clients&quot;</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">&quot;--config&quot;</span><span class="p">,</span>
<span class="n">action</span><span class="o">=</span><span class="s2">&quot;store&quot;</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">&quot;path to alternative Reticulum config directory&quot;</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">&quot;destination&quot;</span><span class="p">,</span>
<span class="n">nargs</span><span class="o">=</span><span class="s2">&quot;?&quot;</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">&quot;hexadecimal hash of the server destination&quot;</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">&quot;&quot;</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">&quot;&quot;</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">&quot;&quot;</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/Identify.py">https://github.com/markqvist/Reticulum/blob/master/Examples/Identify.py</a>.</p>
</div>
<div class="section" id="filetransfer"> <div class="section" id="filetransfer">
<span id="example-filetransfer"></span><h2>Filetransfer<a class="headerlink" href="#filetransfer" title="Permalink to this headline"></a></h2> <span id="example-filetransfer"></span><h2>Filetransfer<a class="headerlink" href="#filetransfer" title="Permalink to this headline"></a></h2>
<p>The <em>Filetransfer</em> example implements a basic file-server program that <p>The <em>Filetransfer</em> example implements a basic file-server program that
@ -1667,6 +1985,7 @@ interface to efficiently pass files of any size over a Reticulum <a class="refer
<li><a class="reference internal" href="#broadcast">Broadcast</a></li> <li><a class="reference internal" href="#broadcast">Broadcast</a></li>
<li><a class="reference internal" href="#echo">Echo</a></li> <li><a class="reference internal" href="#echo">Echo</a></li>
<li><a class="reference internal" href="#link">Link</a></li> <li><a class="reference internal" href="#link">Link</a></li>
<li><a class="reference internal" href="#example-identify">Identification</a></li>
<li><a class="reference internal" href="#filetransfer">Filetransfer</a></li> <li><a class="reference internal" href="#filetransfer">Filetransfer</a></li>
</ul> </ul>
</li> </li>

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@ -157,6 +157,8 @@
</ul></td> </ul></td>
<td style="width: 33%; vertical-align: top;"><ul> <td style="width: 33%; vertical-align: top;"><ul>
<li><a href="reference.html#RNS.Identity.get_random_hash">get_random_hash() (RNS.Identity static method)</a> <li><a href="reference.html#RNS.Identity.get_random_hash">get_random_hash() (RNS.Identity static method)</a>
</li>
<li><a href="reference.html#RNS.Link.get_remote_identity">get_remote_identity() (RNS.Link method)</a>
</li> </li>
<li><a href="reference.html#RNS.PacketReceipt.get_rtt">get_rtt() (RNS.PacketReceipt method)</a> <li><a href="reference.html#RNS.PacketReceipt.get_rtt">get_rtt() (RNS.PacketReceipt method)</a>
</li> </li>
@ -182,10 +184,12 @@
<h2 id="I">I</h2> <h2 id="I">I</h2>
<table style="width: 100%" class="indextable genindextable"><tr> <table style="width: 100%" class="indextable genindextable"><tr>
<td style="width: 33%; vertical-align: top;"><ul> <td style="width: 33%; vertical-align: top;"><ul>
<li><a href="reference.html#RNS.Identity">Identity (class in RNS)</a> <li><a href="reference.html#RNS.Link.identify">identify() (RNS.Link method)</a>
</li> </li>
</ul></td> </ul></td>
<td style="width: 33%; vertical-align: top;"><ul> <td style="width: 33%; vertical-align: top;"><ul>
<li><a href="reference.html#RNS.Identity">Identity (class in RNS)</a>
</li>
<li><a href="reference.html#RNS.Link.inactive_for">inactive_for() (RNS.Link method)</a> <li><a href="reference.html#RNS.Link.inactive_for">inactive_for() (RNS.Link method)</a>
</li> </li>
</ul></td> </ul></td>
@ -292,10 +296,12 @@
</li> </li>
<li><a href="reference.html#RNS.Destination.set_proof_strategy">set_proof_strategy() (RNS.Destination method)</a> <li><a href="reference.html#RNS.Destination.set_proof_strategy">set_proof_strategy() (RNS.Destination method)</a>
</li> </li>
<li><a href="reference.html#RNS.Link.set_resource_callback">set_resource_callback() (RNS.Link method)</a> <li><a href="reference.html#RNS.Link.set_remote_identified_callback">set_remote_identified_callback() (RNS.Link method)</a>
</li> </li>
</ul></td> </ul></td>
<td style="width: 33%; vertical-align: top;"><ul> <td style="width: 33%; vertical-align: top;"><ul>
<li><a href="reference.html#RNS.Link.set_resource_callback">set_resource_callback() (RNS.Link method)</a>
</li>
<li><a href="reference.html#RNS.Link.set_resource_concluded_callback">set_resource_concluded_callback() (RNS.Link method)</a> <li><a href="reference.html#RNS.Link.set_resource_concluded_callback">set_resource_concluded_callback() (RNS.Link method)</a>
</li> </li>
<li><a href="reference.html#RNS.Link.set_resource_started_callback">set_resource_started_callback() (RNS.Link method)</a> <li><a href="reference.html#RNS.Link.set_resource_started_callback">set_resource_started_callback() (RNS.Link method)</a>

10
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@ -16,7 +16,7 @@
<link rel="index" title="Index" href="genindex.html" /> <link rel="index" title="Index" href="genindex.html" />
<link rel="search" title="Search" href="search.html" /> <link rel="search" title="Search" href="search.html" />
<link rel="next" title="Examples" href="examples.html" /> <link rel="next" title="Understanding Reticulum" href="understanding.html" />
<link rel="prev" title="What is Reticulum?" href="whatis.html" /> <link rel="prev" title="What is Reticulum?" href="whatis.html" />
</head><body> </head><body>
<div class="related" role="navigation" aria-label="related navigation"> <div class="related" role="navigation" aria-label="related navigation">
@ -26,7 +26,7 @@
<a href="genindex.html" title="General Index" <a href="genindex.html" title="General Index"
accesskey="I">index</a></li> accesskey="I">index</a></li>
<li class="right" > <li class="right" >
<a href="examples.html" title="Examples" <a href="understanding.html" title="Understanding Reticulum"
accesskey="N">next</a> |</li> accesskey="N">next</a> |</li>
<li class="right" > <li class="right" >
<a href="whatis.html" title="What is Reticulum?" <a href="whatis.html" title="What is Reticulum?"
@ -131,8 +131,8 @@ don’t use pip, but try this recipe:</p>
<p class="topless"><a href="whatis.html" <p class="topless"><a href="whatis.html"
title="previous chapter">What is Reticulum?</a></p> title="previous chapter">What is Reticulum?</a></p>
<h4>Next topic</h4> <h4>Next topic</h4>
<p class="topless"><a href="examples.html" <p class="topless"><a href="understanding.html"
title="next chapter">Examples</a></p> title="next chapter">Understanding Reticulum</a></p>
<div role="note" aria-label="source link"> <div role="note" aria-label="source link">
<h3>This Page</h3> <h3>This Page</h3>
<ul class="this-page-menu"> <ul class="this-page-menu">
@ -161,7 +161,7 @@ don’t use pip, but try this recipe:</p>
<a href="genindex.html" title="General Index" <a href="genindex.html" title="General Index"
>index</a></li> >index</a></li>
<li class="right" > <li class="right" >
<a href="examples.html" title="Examples" <a href="understanding.html" title="Understanding Reticulum"
>next</a> |</li> >next</a> |</li>
<li class="right" > <li class="right" >
<a href="whatis.html" title="What is Reticulum?" <a href="whatis.html" title="What is Reticulum?"

1
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View File

@ -103,6 +103,7 @@ the development of Reticulum itself.</p>
<li class="toctree-l2"><a class="reference internal" href="examples.html#broadcast">Broadcast</a></li> <li class="toctree-l2"><a class="reference internal" href="examples.html#broadcast">Broadcast</a></li>
<li class="toctree-l2"><a class="reference internal" href="examples.html#echo">Echo</a></li> <li class="toctree-l2"><a class="reference internal" href="examples.html#echo">Echo</a></li>
<li class="toctree-l2"><a class="reference internal" href="examples.html#link">Link</a></li> <li class="toctree-l2"><a class="reference internal" href="examples.html#link">Link</a></li>
<li class="toctree-l2"><a class="reference internal" href="examples.html#example-identify">Identification</a></li>
<li class="toctree-l2"><a class="reference internal" href="examples.html#filetransfer">Filetransfer</a></li> <li class="toctree-l2"><a class="reference internal" href="examples.html#filetransfer">Filetransfer</a></li>
</ul> </ul>
</li> </li>

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38
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@ -771,6 +771,20 @@ from a the <em>send()</em> method of a <a class="reference internal" href="#api-
<dd><p>Interval for sending keep-alive packets on established links in seconds.</p> <dd><p>Interval for sending keep-alive packets on established links in seconds.</p>
</dd></dl> </dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="RNS.Link.identify">
<span class="sig-name descname"><span class="pre">identify</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">identity</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#RNS.Link.identify" title="Permalink to this definition"></a></dt>
<dd><p>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.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><p><strong>identity</strong> – An RNS.Identity instance to identify as.</p>
</dd>
</dl>
</dd></dl>
<dl class="py method"> <dl class="py method">
<dt class="sig sig-object py" id="RNS.Link.no_inbound_for"> <dt class="sig sig-object py" id="RNS.Link.no_inbound_for">
<span class="sig-name descname"><span class="pre">no_inbound_for</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#RNS.Link.no_inbound_for" title="Permalink to this definition"></a></dt> <span class="sig-name descname"><span class="pre">no_inbound_for</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#RNS.Link.no_inbound_for" title="Permalink to this definition"></a></dt>
@ -801,6 +815,16 @@ from a the <em>send()</em> method of a <a class="reference internal" href="#api-
</dl> </dl>
</dd></dl> </dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="RNS.Link.get_remote_identity">
<span class="sig-name descname"><span class="pre">get_remote_identity</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#RNS.Link.get_remote_identity" title="Permalink to this definition"></a></dt>
<dd><dl class="field-list simple">
<dt class="field-odd">Returns</dt>
<dd class="field-odd"><p>The identity of the remote peer, if it is known</p>
</dd>
</dl>
</dd></dl>
<dl class="py method"> <dl class="py method">
<dt class="sig sig-object py" id="RNS.Link.teardown"> <dt class="sig sig-object py" id="RNS.Link.teardown">
<span class="sig-name descname"><span class="pre">teardown</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#RNS.Link.teardown" title="Permalink to this definition"></a></dt> <span class="sig-name descname"><span class="pre">teardown</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#RNS.Link.teardown" title="Permalink to this definition"></a></dt>
@ -858,6 +882,18 @@ transferring over this link.</p>
</dl> </dl>
</dd></dl> </dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="RNS.Link.set_remote_identified_callback">
<span class="sig-name descname"><span class="pre">set_remote_identified_callback</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">callback</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#RNS.Link.set_remote_identified_callback" title="Permalink to this definition"></a></dt>
<dd><p>Registers a function to be called when an initiating peer has
identified over this link.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><p><strong>callback</strong> – A function or method with the signature <em>callback(identity)</em> to be called.</p>
</dd>
</dl>
</dd></dl>
<dl class="py method"> <dl class="py method">
<dt class="sig sig-object py" id="RNS.Link.set_resource_strategy"> <dt class="sig sig-object py" id="RNS.Link.set_resource_strategy">
<span class="sig-name descname"><span class="pre">set_resource_strategy</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">resource_strategy</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#RNS.Link.set_resource_strategy" title="Permalink to this definition"></a></dt> <span class="sig-name descname"><span class="pre">set_resource_strategy</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">resource_strategy</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#RNS.Link.set_resource_strategy" title="Permalink to this definition"></a></dt>
@ -898,7 +934,7 @@ compression, coordination and checksumming.</p>
<dl class="field-list simple"> <dl class="field-list simple">
<dt class="field-odd">Parameters</dt> <dt class="field-odd">Parameters</dt>
<dd class="field-odd"><ul class="simple"> <dd class="field-odd"><ul class="simple">
<li><p><strong>data</strong> – The data to be transferred. Can be <em>bytes</em> or an open <em>file handle</em>. See the <a class="reference internal" href="examples.html#example-filetransfer"><span class="std std-ref">Filetransfer Example</span></a> for details.</p></li> <li><p><strong>data</strong> – The data to be transferred. Can be <em>bytes</em> or an open <em>file handle</em>. See the <span class="xref std std-ref">Filetransfer Example</span> for details.</p></li>
<li><p><strong>link</strong> – The <a class="reference internal" href="#api-link"><span class="std std-ref">RNS.Link</span></a> instance on which to transfer the data.</p></li> <li><p><strong>link</strong> – The <a class="reference internal" href="#api-link"><span class="std std-ref">RNS.Link</span></a> instance on which to transfer the data.</p></li>
<li><p><strong>advertise</strong> – Whether to automatically advertise the resource. Can be <em>True</em> or <em>False</em>.</p></li> <li><p><strong>advertise</strong> – Whether to automatically advertise the resource. Can be <em>True</em> or <em>False</em>.</p></li>
<li><p><strong>auto_compress</strong> – Whether to auto-compress the resource. Can be <em>True</em> or <em>False</em>.</p></li> <li><p><strong>auto_compress</strong> – Whether to auto-compress the resource. Can be <em>True</em> or <em>False</em>.</p></li>

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@ -43,7 +43,8 @@
<div class="section" id="what-is-reticulum"> <div class="section" id="what-is-reticulum">
<h1>What is Reticulum?<a class="headerlink" href="#what-is-reticulum" title="Permalink to this headline"></a></h1> <h1>What is Reticulum?<a class="headerlink" href="#what-is-reticulum" title="Permalink to this headline"></a></h1>
<p>Reticulum is a cryptography-based networking stack for wide-area networks built on readily available hardware, and can operate even with very high latency and extremely low bandwidth. Reticulum allows you to build very wide-area networks with off-the-shelf tools, and offers end-to-end encryption, autoconfiguring cryptographically backed multi-hop transport, efficient addressing, unforgeable packet acknowledgements and more.</p> <p>Reticulum is a cryptography-based networking stack for wide-area networks built on readily available hardware, and can operate even with very high latency and extremely low bandwidth.</p>
<p>Reticulum allows you to build very wide-area networks with off-the-shelf tools, and offers end-to-end encryption, autoconfiguring cryptographically backed multi-hop transport, efficient addressing, unforgeable packet acknowledgements and more.</p>
<p>Reticulum is a complete networking stack, and does not use 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.</p> <p>Reticulum is a complete networking stack, and does not use 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.</p>
<p>No kernel modules or drivers are required. Reticulum runs completely in userland, and can run on practically any system that runs Python 3.</p> <p>No kernel modules or drivers are required. Reticulum runs completely in userland, and can run on practically any system that runs Python 3.</p>
<div class="section" id="current-status"> <div class="section" id="current-status">
@ -71,7 +72,7 @@
</li> </li>
<li><p>Unforgeable packet delivery confirmations</p></li> <li><p>Unforgeable packet delivery confirmations</p></li>
<li><p>A variety of supported interface types</p></li> <li><p>A variety of supported interface types</p></li>
<li><p>An intuitive and easy-to-use API</p></li> <li><p>An intuitive and developer-friendly API</p></li>
<li><p>Reliable and efficient transfer of arbritrary amounts of data</p> <li><p>Reliable and efficient transfer of arbritrary amounts of data</p>
<ul> <ul>
<li><p>Reticulum can handle a few bytes of data or files of many gigabytes</p></li> <li><p>Reticulum can handle a few bytes of data or files of many gigabytes</p></li>

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@ -68,6 +68,18 @@ destination, and passing traffic back and forth over the link.
This example can also be found at `<https://github.com/markqvist/Reticulum/blob/master/Examples/Link.py>`_. This example can also be found at `<https://github.com/markqvist/Reticulum/blob/master/Examples/Link.py>`_.
.. _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 `<https://github.com/markqvist/Reticulum/blob/master/Examples/Identify.py>`_.
.. _example-filetransfer: .. _example-filetransfer:
Filetransfer Filetransfer