<spanid="api-main"></span><h1>API Reference<aclass="headerlink"href="#api-reference"title="Permalink to this heading">#</a></h1>
<p>Communication over Reticulum networks is achieved by using a simple set of classes exposed by the RNS API.
This chapter lists and explains all classes exposed by the Reticulum Network Stack API, along with their method signatures and usage. It can be used as a reference while writing applications that utilise Reticulum, or it can be read in entirity to gain an understanding of the complete functionality of RNS from a developers perspective.</p>
<emclass="property"><spanclass="pre">class</span><spanclass="w"></span></em><spanclass="sig-prename descclassname"><spanclass="pre">RNS.</span></span><spanclass="sig-name descname"><spanclass="pre">Reticulum</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">configdir</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">loglevel</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">logdest</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">verbosity</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Reticulum"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">MTU</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">500</span></em><aclass="headerlink"href="#RNS.Reticulum.MTU"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">ANNOUNCE_CAP</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">2</span></em><aclass="headerlink"href="#RNS.Reticulum.ANNOUNCE_CAP"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">MINIMUM_BITRATE</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">5</span></em><aclass="headerlink"href="#RNS.Reticulum.MINIMUM_BITRATE"title="Permalink to this definition">#</a></dt>
<dd><p>Minimum bitrate required across a medium for Reticulum to be able
to successfully establish links. Currently 5 bits per second.</p>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">get_instance</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Reticulum.get_instance"title="Permalink to this definition">#</a></dt>
<dd><p>Return the currently running Reticulum instance</p>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">should_use_implicit_proof</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Reticulum.should_use_implicit_proof"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">transport_enabled</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Reticulum.transport_enabled"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">remote_management_enabled</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Reticulum.remote_management_enabled"title="Permalink to this definition">#</a></dt>
<dd><p>Returns whether remote management is enabled for the
running instance.</p>
<p>When remote management is enabled, authenticated peers
<emclass="property"><spanclass="pre">class</span><spanclass="w"></span></em><spanclass="sig-prename descclassname"><spanclass="pre">RNS.</span></span><spanclass="sig-name descname"><spanclass="pre">Identity</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">create_keys</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">True</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Identity"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">CURVE</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">'Curve25519'</span></em><aclass="headerlink"href="#RNS.Identity.CURVE"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">KEYSIZE</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">512</span></em><aclass="headerlink"href="#RNS.Identity.KEYSIZE"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">RATCHETSIZE</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">256</span></em><aclass="headerlink"href="#RNS.Identity.RATCHETSIZE"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">RATCHET_EXPIRY</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">2592000</span></em><aclass="headerlink"href="#RNS.Identity.RATCHET_EXPIRY"title="Permalink to this definition">#</a></dt>
<dd><p>The expiry time for received ratchets in seconds, defaults to 30 days. Reticulum will always use the most recently
announced ratchet, and remember it for up to <codeclass="docutils literal notranslate"><spanclass="pre">RATCHET_EXPIRY</span></code> since receiving it, after which it will be discarded.
If a newer ratchet is announced in the meantime, it will be replace the already known ratchet.</p>
<spanclass="sig-name descname"><spanclass="pre">TRUNCATED_HASHLENGTH</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">128</span></em><aclass="headerlink"href="#RNS.Identity.TRUNCATED_HASHLENGTH"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">recall</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">destination_hash</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Identity.recall"title="Permalink to this definition">#</a></dt>
<ddclass="field-even"><p>An <aclass="reference internal"href="#api-identity"><spanclass="std std-ref">RNS.Identity</span></a> instance that can be used to create an outgoing <aclass="reference internal"href="#api-destination"><spanclass="std std-ref">RNS.Destination</span></a>, or <em>None</em> if the destination is unknown.</p>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">recall_app_data</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">destination_hash</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Identity.recall_app_data"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">full_hash</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">data</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Identity.full_hash"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">truncated_hash</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">data</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Identity.truncated_hash"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">get_random_hash</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Identity.get_random_hash"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">current_ratchet_id</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">destination_hash</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Identity.current_ratchet_id"title="Permalink to this definition">#</a></dt>
<dd><p>Get the ID of the currently used ratchet key for a given destination hash</p>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">from_bytes</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">prv_bytes</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Identity.from_bytes"title="Permalink to this definition">#</a></dt>
<dd><p>Create a new <aclass="reference internal"href="#api-identity"><spanclass="std std-ref">RNS.Identity</span></a> instance from <em>bytes</em> of private key.
Can be used to load previously created and saved identities into Reticulum.</p>
<ddclass="field-odd"><p><strong>prv_bytes</strong>– The <em>bytes</em> of private a saved private key. <strong>HAZARD!</strong> Never use this to generate a new key by feeding random data in prv_bytes.</p>
<ddclass="field-even"><p>A <aclass="reference internal"href="#api-identity"><spanclass="std std-ref">RNS.Identity</span></a> instance, or <em>None</em> if the <em>bytes</em> data was invalid.</p>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">from_file</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">path</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Identity.from_file"title="Permalink to this definition">#</a></dt>
<ddclass="field-odd"><p><strong>path</strong>– The full path to the saved <aclass="reference internal"href="#api-identity"><spanclass="std std-ref">RNS.Identity</span></a> data</p>
<ddclass="field-even"><p>A <aclass="reference internal"href="#api-identity"><spanclass="std std-ref">RNS.Identity</span></a> instance, or <em>None</em> if the loaded data was invalid.</p>
<spanclass="sig-name descname"><spanclass="pre">to_file</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">path</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Identity.to_file"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">get_private_key</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Identity.get_private_key"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">get_public_key</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Identity.get_public_key"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">load_private_key</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">prv_bytes</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Identity.load_private_key"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">load_public_key</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">pub_bytes</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Identity.load_public_key"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">encrypt</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">plaintext</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">ratchet</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Identity.encrypt"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">decrypt</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">ciphertext_token</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">ratchets</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">enforce_ratchets</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">False</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">ratchet_id_receiver</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Identity.decrypt"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">sign</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">message</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Identity.sign"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">validate</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">signature</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">message</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Identity.validate"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">class</span><spanclass="w"></span></em><spanclass="sig-prename descclassname"><spanclass="pre">RNS.</span></span><spanclass="sig-name descname"><spanclass="pre">Destination</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">identity</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">direction</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">type</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">app_name</span></span></em>, <emclass="sig-param"><spanclass="o"><spanclass="pre">*</span></span><spanclass="n"><spanclass="pre">aspects</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination"title="Permalink to this definition">#</a></dt>
<li><p><strong>identity</strong>– An instance of <aclass="reference internal"href="#api-identity"><spanclass="std std-ref">RNS.Identity</span></a>. Can hold only public keys for an outgoing destination, or holding private keys for an ingoing.</p></li>
<spanclass="sig-name descname"><spanclass="pre">RATCHET_COUNT</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">512</span></em><aclass="headerlink"href="#RNS.Destination.RATCHET_COUNT"title="Permalink to this definition">#</a></dt>
<dd><p>The default number of generated ratchet keys a destination will retain, if it has ratchets enabled.</p>
<spanclass="sig-name descname"><spanclass="pre">RATCHET_INTERVAL</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">1800</span></em><aclass="headerlink"href="#RNS.Destination.RATCHET_INTERVAL"title="Permalink to this definition">#</a></dt>
<dd><p>The minimum interval between rotating ratchet keys, in seconds.</p>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">expand_name</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">identity</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">app_name</span></span></em>, <emclass="sig-param"><spanclass="o"><spanclass="pre">*</span></span><spanclass="n"><spanclass="pre">aspects</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.expand_name"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">app_and_aspects_from_name</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">full_name</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.app_and_aspects_from_name"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">hash_from_name_and_identity</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">full_name</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">identity</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.hash_from_name_and_identity"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">hash</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">identity</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">app_name</span></span></em>, <emclass="sig-param"><spanclass="o"><spanclass="pre">*</span></span><spanclass="n"><spanclass="pre">aspects</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.hash"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">announce</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">app_data</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">path_response</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">False</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">attached_interface</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">tag</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">send</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">True</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.announce"title="Permalink to this definition">#</a></dt>
<li><p><strong>app_data</strong>–<em>bytes</em> containing the app_data.</p></li>
<li><p><strong>path_response</strong>– Internal flag used by <aclass="reference internal"href="#api-transport"><spanclass="std std-ref">RNS.Transport</span></a>. Ignore.</p></li>
<spanclass="sig-name descname"><spanclass="pre">accepts_links</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">accepts</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.accepts_links"title="Permalink to this definition">#</a></dt>
<ddclass="field-odd"><p><strong>accepts</strong>– If <codeclass="docutils literal notranslate"><spanclass="pre">True</span></code> or <codeclass="docutils literal notranslate"><spanclass="pre">False</span></code>, this method sets whether the destination accepts incoming link requests. If not provided or <codeclass="docutils literal notranslate"><spanclass="pre">None</span></code>, the method returns whether the destination currently accepts link requests.</p>
<ddclass="field-even"><p><codeclass="docutils literal notranslate"><spanclass="pre">True</span></code> or <codeclass="docutils literal notranslate"><spanclass="pre">False</span></code> depending on whether the destination accepts incoming link requests, if the <em>accepts</em> parameter is not provided or <codeclass="docutils literal notranslate"><spanclass="pre">None</span></code>.</p>
<spanclass="sig-name descname"><spanclass="pre">set_link_established_callback</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">callback</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.set_link_established_callback"title="Permalink to this definition">#</a></dt>
<ddclass="field-odd"><p><strong>callback</strong>– A function or method with the signature <em>callback(link)</em> to be called when a new link is established with this destination.</p>
<spanclass="sig-name descname"><spanclass="pre">set_packet_callback</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">callback</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.set_packet_callback"title="Permalink to this definition">#</a></dt>
<ddclass="field-odd"><p><strong>callback</strong>– A function or method with the signature <em>callback(data, packet)</em> to be called when this destination receives a packet.</p>
<spanclass="sig-name descname"><spanclass="pre">set_proof_requested_callback</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">callback</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.set_proof_requested_callback"title="Permalink to this definition">#</a></dt>
<ddclass="field-odd"><p><strong>callback</strong>– A function or method to with the signature <em>callback(packet)</em> be called when a packet that requests a proof is received. The callback must return one of True or False. If the callback returns True, a proof will be sent. If it returns False, a proof will not be sent.</p>
<spanclass="sig-name descname"><spanclass="pre">set_proof_strategy</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">proof_strategy</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.set_proof_strategy"title="Permalink to this definition">#</a></dt>
<ddclass="field-odd"><p><strong>proof_strategy</strong>– One of <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Destination.PROVE_NONE</span></code>, <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Destination.PROVE_ALL</span></code> or <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Destination.PROVE_APP</span></code>. If <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Destination.PROVE_APP</span></code> is set, the <cite>proof_requested_callback</cite> will be called to determine whether a proof should be sent or not.</p>
<spanclass="sig-name descname"><spanclass="pre">register_request_handler</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">path</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">response_generator</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">allow</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">ALLOW_NONE</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">allowed_list</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.register_request_handler"title="Permalink to this definition">#</a></dt>
<li><p><strong>response_generator</strong>– A function or method with the signature <em>response_generator(path, data, request_id, link_id, remote_identity, requested_at)</em> to be called. Whatever this funcion returns will be sent as a response to the requester. If the function returns <codeclass="docutils literal notranslate"><spanclass="pre">None</span></code>, no response will be sent.</p></li>
<li><p><strong>allow</strong>– One of <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Destination.ALLOW_NONE</span></code>, <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Destination.ALLOW_ALL</span></code> or <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Destination.ALLOW_LIST</span></code>. If <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Destination.ALLOW_LIST</span></code> is set, the request handler will only respond to requests for identified peers in the supplied list.</p></li>
<li><p><strong>allowed_list</strong>– A list of <em>bytes-like</em><aclass="reference internal"href="#api-identity"><spanclass="std std-ref">RNS.Identity</span></a> hashes.</p></li>
<ddclass="field-even"><p><codeclass="docutils literal notranslate"><spanclass="pre">ValueError</span></code> if any of the supplied arguments are invalid.</p>
<spanclass="sig-name descname"><spanclass="pre">deregister_request_handler</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">path</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.deregister_request_handler"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">enable_ratchets</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">ratchets_path</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.enable_ratchets"title="Permalink to this definition">#</a></dt>
<dd><p>Enables ratchets on the destination. When ratchets are enabled, Reticulum will automatically rotate
the keys used to encrypt packets to this destination, and include the latest ratchet key in announces.</p>
<p>Enabling ratchets on a destination will provide forward secrecy for packets sent to that destination,
even when sent outside a <codeclass="docutils literal notranslate"><spanclass="pre">Link</span></code>. The normal Reticulum <codeclass="docutils literal notranslate"><spanclass="pre">Link</span></code> establishment procedure already performs
its own ephemeral key exchange for each link establishment, which means that ratchets are not necessary
to provide forward secrecy for links.</p>
<p>Enabling ratchets will have a small impact on announce size, adding 32 bytes to every sent announce.</p>
<spanclass="sig-name descname"><spanclass="pre">enforce_ratchets</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.enforce_ratchets"title="Permalink to this definition">#</a></dt>
<dd><p>When ratchet enforcement is enabled, this destination will never accept packets that use its
base Identity key for encryption, but only accept packets encrypted with one of the retained
<spanclass="sig-name descname"><spanclass="pre">set_retained_ratchets</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">retained_ratchets</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.set_retained_ratchets"title="Permalink to this definition">#</a></dt>
<dd><p>Sets the number of previously generated ratchet keys this destination will retain,
and try to use when decrypting incoming packets. Defaults to <codeclass="docutils literal notranslate"><spanclass="pre">Destination.RATCHET_COUNT</span></code>.</p>
<spanclass="sig-name descname"><spanclass="pre">set_ratchet_interval</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">interval</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.set_ratchet_interval"title="Permalink to this definition">#</a></dt>
<dd><p>Sets the minimum interval in seconds between ratchet key rotation.
Defaults to <codeclass="docutils literal notranslate"><spanclass="pre">Destination.RATCHET_INTERVAL</span></code>.</p>
<spanclass="sig-name descname"><spanclass="pre">create_keys</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.create_keys"title="Permalink to this definition">#</a></dt>
<dd><p>For a <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Destination.GROUP</span></code> type destination, creates a new symmetric key.</p>
<ddclass="field-odd"><p><codeclass="docutils literal notranslate"><spanclass="pre">TypeError</span></code> if called on an incompatible type of destination.</p>
<spanclass="sig-name descname"><spanclass="pre">get_private_key</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.get_private_key"title="Permalink to this definition">#</a></dt>
<dd><p>For a <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Destination.GROUP</span></code> type destination, returns the symmetric private key.</p>
<ddclass="field-odd"><p><codeclass="docutils literal notranslate"><spanclass="pre">TypeError</span></code> if called on an incompatible type of destination.</p>
<spanclass="sig-name descname"><spanclass="pre">load_private_key</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">key</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.load_private_key"title="Permalink to this definition">#</a></dt>
<dd><p>For a <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Destination.GROUP</span></code> type destination, loads a symmetric private key.</p>
<ddclass="field-even"><p><codeclass="docutils literal notranslate"><spanclass="pre">TypeError</span></code> if called on an incompatible type of destination.</p>
<spanclass="sig-name descname"><spanclass="pre">encrypt</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">plaintext</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.encrypt"title="Permalink to this definition">#</a></dt>
<dd><p>Encrypts information for <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Destination.SINGLE</span></code> or <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Destination.GROUP</span></code> type destination.</p>
<ddclass="field-even"><p><codeclass="docutils literal notranslate"><spanclass="pre">ValueError</span></code> if destination does not hold a necessary key for encryption.</p>
<spanclass="sig-name descname"><spanclass="pre">decrypt</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">ciphertext</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.decrypt"title="Permalink to this definition">#</a></dt>
<dd><p>Decrypts information for <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Destination.SINGLE</span></code> or <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Destination.GROUP</span></code> type destination.</p>
<ddclass="field-even"><p><codeclass="docutils literal notranslate"><spanclass="pre">ValueError</span></code> if destination does not hold a necessary key for decryption.</p>
<spanclass="sig-name descname"><spanclass="pre">sign</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">message</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.sign"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">set_default_app_data</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">app_data</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.set_default_app_data"title="Permalink to this definition">#</a></dt>
<ddclass="field-odd"><p><strong>app_data</strong>– A <em>bytes-like</em> containing the default app_data, or a <em>callable</em> returning a <em>bytes-like</em> containing the app_data.</p>
<spanclass="sig-name descname"><spanclass="pre">clear_default_app_data</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Destination.clear_default_app_data"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">class</span><spanclass="w"></span></em><spanclass="sig-prename descclassname"><spanclass="pre">RNS.</span></span><spanclass="sig-name descname"><spanclass="pre">Packet</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">destination</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">data</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">create_receipt</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">True</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Packet"title="Permalink to this definition">#</a></dt>
<codeclass="docutils literal notranslate"><spanclass="pre">RNS.Destination.GROUP</span></code> destination or a <aclass="reference internal"href="#api-link"><spanclass="std std-ref">RNS.Link</span></a>.</p>
<p>For <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Destination.GROUP</span></code> destinations, Reticulum will use the
<li><p><strong>destination</strong>– A <aclass="reference internal"href="#api-destination"><spanclass="std std-ref">RNS.Destination</span></a> instance to which the packet will be sent.</p></li>
<li><p><strong>data</strong>– The data payload to be included in the packet as <em>bytes</em>.</p></li>
<li><p><strong>create_receipt</strong>– Specifies whether a <aclass="reference internal"href="#api-packetreceipt"><spanclass="std std-ref">RNS.PacketReceipt</span></a> should be created when instantiating the packet.</p></li>
<spanclass="sig-name descname"><spanclass="pre">ENCRYPTED_MDU</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">383</span></em><aclass="headerlink"href="#RNS.Packet.ENCRYPTED_MDU"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">PLAIN_MDU</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">464</span></em><aclass="headerlink"href="#RNS.Packet.PLAIN_MDU"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">send</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Packet.send"title="Permalink to this definition">#</a></dt>
<ddclass="field-odd"><p>A <aclass="reference internal"href="#api-packetreceipt"><spanclass="std std-ref">RNS.PacketReceipt</span></a> instance if <em>create_receipt</em> was set to <em>True</em> when the packet was instantiated, if not returns <em>None</em>. If the packet could not be sent <em>False</em> is returned.</p>
<spanclass="sig-name descname"><spanclass="pre">resend</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Packet.resend"title="Permalink to this definition">#</a></dt>
<ddclass="field-odd"><p>A <aclass="reference internal"href="#api-packetreceipt"><spanclass="std std-ref">RNS.PacketReceipt</span></a> instance if <em>create_receipt</em> was set to <em>True</em> when the packet was instantiated, if not returns <em>None</em>. If the packet could not be sent <em>False</em> is returned.</p>
<spanclass="sig-name descname"><spanclass="pre">get_rssi</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Packet.get_rssi"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">get_snr</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Packet.get_snr"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">get_q</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Packet.get_q"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">class</span><spanclass="w"></span></em><spanclass="sig-prename descclassname"><spanclass="pre">RNS.</span></span><spanclass="sig-name descname"><spanclass="pre">PacketReceipt</span></span><aclass="headerlink"href="#RNS.PacketReceipt"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">get_status</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.PacketReceipt.get_status"title="Permalink to this definition">#</a></dt>
<ddclass="field-odd"><p>The status of the associated <aclass="reference internal"href="#api-packet"><spanclass="std std-ref">RNS.Packet</span></a> instance. Can be one of <codeclass="docutils literal notranslate"><spanclass="pre">RNS.PacketReceipt.SENT</span></code>, <codeclass="docutils literal notranslate"><spanclass="pre">RNS.PacketReceipt.DELIVERED</span></code>, <codeclass="docutils literal notranslate"><spanclass="pre">RNS.PacketReceipt.FAILED</span></code> or <codeclass="docutils literal notranslate"><spanclass="pre">RNS.PacketReceipt.CULLED</span></code>.</p>
<spanclass="sig-name descname"><spanclass="pre">get_rtt</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.PacketReceipt.get_rtt"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">set_timeout</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">timeout</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.PacketReceipt.set_timeout"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">set_delivery_callback</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">callback</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.PacketReceipt.set_delivery_callback"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">set_timeout_callback</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">callback</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.PacketReceipt.set_timeout_callback"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">class</span><spanclass="w"></span></em><spanclass="sig-prename descclassname"><spanclass="pre">RNS.</span></span><spanclass="sig-name descname"><spanclass="pre">Link</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">destination</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">established_callback</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">closed_callback</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link"title="Permalink to this definition">#</a></dt>
<li><p><strong>destination</strong>– A <aclass="reference internal"href="#api-destination"><spanclass="std std-ref">RNS.Destination</span></a> instance which to establish a link to.</p></li>
<li><p><strong>established_callback</strong>– An optional function or method with the signature <em>callback(link)</em> to be called when the link has been established.</p></li>
<li><p><strong>closed_callback</strong>– An optional function or method with the signature <em>callback(link)</em> to be called when the link is closed.</p></li>
<spanclass="sig-name descname"><spanclass="pre">CURVE</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">'Curve25519'</span></em><aclass="headerlink"href="#RNS.Link.CURVE"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">ESTABLISHMENT_TIMEOUT_PER_HOP</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">6</span></em><aclass="headerlink"href="#RNS.Link.ESTABLISHMENT_TIMEOUT_PER_HOP"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">KEEPALIVE_TIMEOUT_FACTOR</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">4</span></em><aclass="headerlink"href="#RNS.Link.KEEPALIVE_TIMEOUT_FACTOR"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">STALE_GRACE</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">2</span></em><aclass="headerlink"href="#RNS.Link.STALE_GRACE"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">KEEPALIVE</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">360</span></em><aclass="headerlink"href="#RNS.Link.KEEPALIVE"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">STALE_TIME</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">720</span></em><aclass="headerlink"href="#RNS.Link.STALE_TIME"title="Permalink to this definition">#</a></dt>
<dd><p>If no traffic or keep-alive packets are received within this period, the
link will be marked as stale, and a final keep-alive packet will be sent.
If after this no traffic or keep-alive packets are received within <codeclass="docutils literal notranslate"><spanclass="pre">RTT</span></code> *
<codeclass="docutils literal notranslate"><spanclass="pre">KEEPALIVE_TIMEOUT_FACTOR</span></code> + <codeclass="docutils literal notranslate"><spanclass="pre">STALE_GRACE</span></code>, the link is considered timed out,
<spanclass="sig-name descname"><spanclass="pre">identify</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">identity</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.identify"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">request</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">path</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">data</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">response_callback</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">failed_callback</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">progress_callback</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">timeout</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.request"title="Permalink to this definition">#</a></dt>
<li><p><strong>response_callback</strong>– An optional function or method with the signature <em>response_callback(request_receipt)</em> to be called when a response is received. See the <aclass="reference internal"href="examples.html#example-request"><spanclass="std std-ref">Request Example</span></a> for more info.</p></li>
<li><p><strong>failed_callback</strong>– An optional function or method with the signature <em>failed_callback(request_receipt)</em> to be called when a request fails. See the <aclass="reference internal"href="examples.html#example-request"><spanclass="std std-ref">Request Example</span></a> for more info.</p></li>
<li><p><strong>progress_callback</strong>– An optional function or method with the signature <em>progress_callback(request_receipt)</em> to be called when progress is made receiving the response. Progress can be accessed as a float between 0.0 and 1.0 by the <em>request_receipt.progress</em> property.</p></li>
<li><p><strong>timeout</strong>– An optional timeout in seconds for the request. If <em>None</em> is supplied it will be calculated based on link RTT.</p></li>
<ddclass="field-even"><p>A <aclass="reference internal"href="#api-requestreceipt"><spanclass="std std-ref">RNS.RequestReceipt</span></a> instance if the request was sent, or <em>False</em> if it was not.</p>
<spanclass="sig-name descname"><spanclass="pre">track_phy_stats</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">track</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.track_phy_stats"title="Permalink to this definition">#</a></dt>
<dd><p>You can enable physical layer statistics on a per-link basis. If this is enabled,
and the link is running over an interface that supports reporting physical layer
statistics, you will be able to retrieve stats such as <em>RSSI</em>, <em>SNR</em> and physical
<ddclass="field-odd"><p><strong>track</strong>– Whether or not to keep track of physical layer statistics. Value must be <codeclass="docutils literal notranslate"><spanclass="pre">True</span></code> or <codeclass="docutils literal notranslate"><spanclass="pre">False</span></code>.</p>
<spanclass="sig-name descname"><spanclass="pre">get_rssi</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.get_rssi"title="Permalink to this definition">#</a></dt>
<ddclass="field-odd"><p>The physical layer <em>Received Signal Strength Indication</em> if available, otherwise <codeclass="docutils literal notranslate"><spanclass="pre">None</span></code>. Physical layer statistics must be enabled on the link for this method to return a value.</p>
<spanclass="sig-name descname"><spanclass="pre">get_snr</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.get_snr"title="Permalink to this definition">#</a></dt>
<ddclass="field-odd"><p>The physical layer <em>Signal-to-Noise Ratio</em> if available, otherwise <codeclass="docutils literal notranslate"><spanclass="pre">None</span></code>. Physical layer statistics must be enabled on the link for this method to return a value.</p>
</dd>
</dl>
</dd></dl>
<dlclass="py method">
<dtclass="sig sig-object py"id="RNS.Link.get_q">
<spanclass="sig-name descname"><spanclass="pre">get_q</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.get_q"title="Permalink to this definition">#</a></dt>
<ddclass="field-odd"><p>The physical layer <em>Link Quality</em> if available, otherwise <codeclass="docutils literal notranslate"><spanclass="pre">None</span></code>. Physical layer statistics must be enabled on the link for this method to return a value.</p>
<spanclass="sig-name descname"><spanclass="pre">get_establishment_rate</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.get_establishment_rate"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">get_age</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.get_age"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">no_inbound_for</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.no_inbound_for"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">no_outbound_for</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.no_outbound_for"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">no_data_for</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.no_data_for"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">inactive_for</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.inactive_for"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">get_remote_identity</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.get_remote_identity"title="Permalink to this definition">#</a></dt>
<ddclass="field-odd"><p>The identity of the remote peer, if it is known. Calling this method will not query the remote initiator to reveal its identity. Returns <codeclass="docutils literal notranslate"><spanclass="pre">None</span></code> if the link initiator has not already independently called the <codeclass="docutils literal notranslate"><spanclass="pre">identify(identity)</span></code> method.</p>
<spanclass="sig-name descname"><spanclass="pre">teardown</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.teardown"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">get_channel</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.get_channel"title="Permalink to this definition">#</a></dt>
<dd><p>Get the <codeclass="docutils literal notranslate"><spanclass="pre">Channel</span></code> for this link.</p>
<spanclass="sig-name descname"><spanclass="pre">set_link_closed_callback</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">callback</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.set_link_closed_callback"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">set_packet_callback</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">callback</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.set_packet_callback"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">set_resource_callback</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">callback</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.set_resource_callback"title="Permalink to this definition">#</a></dt>
<ddclass="field-odd"><p><strong>callback</strong>– A function or method with the signature <em>callback(resource)</em> to be called. Please note that only the basic information of the resource is available at this time, such as <em>get_transfer_size()</em>, <em>get_data_size()</em>, <em>get_parts()</em> and <em>is_compressed()</em>.</p>
<spanclass="sig-name descname"><spanclass="pre">set_resource_started_callback</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">callback</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.set_resource_started_callback"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">set_resource_concluded_callback</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">callback</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.set_resource_concluded_callback"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">set_remote_identified_callback</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">callback</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.set_remote_identified_callback"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">set_resource_strategy</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">resource_strategy</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Link.set_resource_strategy"title="Permalink to this definition">#</a></dt>
<ddclass="field-odd"><p><strong>resource_strategy</strong>– One of <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Link.ACCEPT_NONE</span></code>, <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Link.ACCEPT_ALL</span></code> or <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Link.ACCEPT_APP</span></code>. If <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Link.ACCEPT_APP</span></code> is set, the <cite>resource_callback</cite> will be called to determine whether the resource should be accepted or not.</p>
<emclass="property"><spanclass="pre">class</span><spanclass="w"></span></em><spanclass="sig-prename descclassname"><spanclass="pre">RNS.</span></span><spanclass="sig-name descname"><spanclass="pre">RequestReceipt</span></span><aclass="headerlink"href="#RNS.RequestReceipt"title="Permalink to this definition">#</a></dt>
<dd><p>An instance of this class is returned by the <codeclass="docutils literal notranslate"><spanclass="pre">request</span></code> method of <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Link</span></code>
instances. It should never be instantiated manually. It provides methods to
check status, response time and response data when the request concludes.</p>
<spanclass="sig-name descname"><spanclass="pre">get_request_id</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.RequestReceipt.get_request_id"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">get_status</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.RequestReceipt.get_status"title="Permalink to this definition">#</a></dt>
<ddclass="field-odd"><p>The current status of the request, one of <codeclass="docutils literal notranslate"><spanclass="pre">RNS.RequestReceipt.FAILED</span></code>, <codeclass="docutils literal notranslate"><spanclass="pre">RNS.RequestReceipt.SENT</span></code>, <codeclass="docutils literal notranslate"><spanclass="pre">RNS.RequestReceipt.DELIVERED</span></code>, <codeclass="docutils literal notranslate"><spanclass="pre">RNS.RequestReceipt.READY</span></code>.</p>
<spanclass="sig-name descname"><spanclass="pre">get_progress</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.RequestReceipt.get_progress"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">get_response</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.RequestReceipt.get_response"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">get_response_time</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.RequestReceipt.get_response_time"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">concluded</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.RequestReceipt.concluded"title="Permalink to this definition">#</a></dt>
<li><p><strong>data</strong>– The data to be transferred. Can be <em>bytes</em> or an open <em>file handle</em>. See the <aclass="reference internal"href="examples.html#example-filetransfer"><spanclass="std std-ref">Filetransfer Example</span></a> for details.</p></li>
<li><p><strong>link</strong>– The <aclass="reference internal"href="#api-link"><spanclass="std std-ref">RNS.Link</span></a> instance on which to transfer the data.</p></li>
<li><p><strong>advertise</strong>– Optional. Whether to automatically advertise the resource. Can be <em>True</em> or <em>False</em>.</p></li>
<li><p><strong>auto_compress</strong>– Optional. Whether to auto-compress the resource. Can be <em>True</em> or <em>False</em>.</p></li>
<li><p><strong>callback</strong>– An optional <em>callable</em> with the signature <em>callback(resource)</em>. Will be called when the resource transfer concludes.</p></li>
<li><p><strong>progress_callback</strong>– An optional <em>callable</em> with the signature <em>callback(resource)</em>. Will be called whenever the resource transfer progress is updated.</p></li>
<spanclass="sig-name descname"><spanclass="pre">advertise</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Resource.advertise"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">cancel</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Resource.cancel"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">get_progress</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Resource.get_progress"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">get_transfer_size</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Resource.get_transfer_size"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">get_data_size</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Resource.get_data_size"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">get_parts</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Resource.get_parts"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">get_segments</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Resource.get_segments"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">get_hash</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Resource.get_hash"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">is_compressed</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Resource.is_compressed"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">class</span><spanclass="w"></span></em><spanclass="sig-prename descclassname"><spanclass="pre">RNS.Channel.</span></span><spanclass="sig-name descname"><spanclass="pre">Channel</span></span><aclass="headerlink"href="#RNS.Channel.Channel"title="Permalink to this definition">#</a></dt>
<dd><p>Provides reliable delivery of messages over
a link.</p>
<p><codeclass="docutils literal notranslate"><spanclass="pre">Channel</span></code> differs from <codeclass="docutils literal notranslate"><spanclass="pre">Request</span></code> and
<codeclass="docutils literal notranslate"><spanclass="pre">Resource</span></code> in some important ways:</p>
<blockquote>
<div><dlclass="simple">
<dt><strong>Continuous</strong></dt><dd><p>Messages can be sent or received as long as
the <codeclass="docutils literal notranslate"><spanclass="pre">Link</span></code> is open.</p>
</dd>
<dt><strong>Bi-directional</strong></dt><dd><p>Messages can be sent in either direction on
the <codeclass="docutils literal notranslate"><spanclass="pre">Link</span></code>; neither end is the client or
server.</p>
</dd>
<dt><strong>Size-constrained</strong></dt><dd><p>Messages must be encoded into a single packet.</p>
</dd>
</dl>
</div></blockquote>
<p><codeclass="docutils literal notranslate"><spanclass="pre">Channel</span></code> is similar to <codeclass="docutils literal notranslate"><spanclass="pre">Packet</span></code>, except that it
provides reliable delivery (automatic retries) as well
as a structure for exchanging several types of
messages over the <codeclass="docutils literal notranslate"><spanclass="pre">Link</span></code>.</p>
<p><codeclass="docutils literal notranslate"><spanclass="pre">Channel</span></code> is not instantiated directly, but rather
obtained from a <codeclass="docutils literal notranslate"><spanclass="pre">Link</span></code> with <codeclass="docutils literal notranslate"><spanclass="pre">get_channel()</span></code>.</p>
<spanclass="sig-name descname"><spanclass="pre">register_message_type</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">message_class</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><spanclass="pre">Type</span><spanclass="p"><spanclass="pre">[</span></span><aclass="reference internal"href="#RNS.MessageBase"title="RNS.Channel.MessageBase"><spanclass="pre">MessageBase</span></a><spanclass="p"><spanclass="pre">]</span></span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Channel.Channel.register_message_type"title="Permalink to this definition">#</a></dt>
<dd><p>Register a message class for reception over a <codeclass="docutils literal notranslate"><spanclass="pre">Channel</span></code>.</p>
<p>Message classes must extend <codeclass="docutils literal notranslate"><spanclass="pre">MessageBase</span></code>.</p>
<spanclass="sig-name descname"><spanclass="pre">add_message_handler</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">callback</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><spanclass="pre">MessageCallbackType</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Channel.Channel.add_message_handler"title="Permalink to this definition">#</a></dt>
<dd><p>Add a handler for incoming messages. A handler
<spanclass="sig-name descname"><spanclass="pre">remove_message_handler</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">callback</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><spanclass="pre">MessageCallbackType</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Channel.Channel.remove_message_handler"title="Permalink to this definition">#</a></dt>
<dd><p>Remove a handler added with <codeclass="docutils literal notranslate"><spanclass="pre">add_message_handler</span></code>.</p>
<spanclass="sig-name descname"><spanclass="pre">is_ready_to_send</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><spanclass="sig-return"><spanclass="sig-return-icon">→</span><spanclass="sig-return-typehint"><spanclass="pre">bool</span></span></span><aclass="headerlink"href="#RNS.Channel.Channel.is_ready_to_send"title="Permalink to this definition">#</a></dt>
<dd><p>Check if <codeclass="docutils literal notranslate"><spanclass="pre">Channel</span></code> is ready to send.</p>
<spanclass="sig-name descname"><spanclass="pre">send</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">message</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><aclass="reference internal"href="#RNS.MessageBase"title="RNS.Channel.MessageBase"><spanclass="pre">MessageBase</span></a></span></em><spanclass="sig-paren">)</span><spanclass="sig-return"><spanclass="sig-return-icon">→</span><spanclass="sig-return-typehint"><spanclass="pre">Envelope</span></span></span><aclass="headerlink"href="#RNS.Channel.Channel.send"title="Permalink to this definition">#</a></dt>
<dd><p>Send a message. If a message send is attempted and
<codeclass="docutils literal notranslate"><spanclass="pre">Channel</span></code> is not ready, an exception is thrown.</p>
<ddclass="field-odd"><p><strong>message</strong>– an instance of a <codeclass="docutils literal notranslate"><spanclass="pre">MessageBase</span></code> subclass</p>
<emclass="property"><spanclass="pre">property</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">MDU</span></span><aclass="headerlink"href="#RNS.Channel.Channel.MDU"title="Permalink to this definition">#</a></dt>
<dd><p>Maximum Data Unit: the number of bytes available
for a message to consume in a single send. This
value is adjusted from the <codeclass="docutils literal notranslate"><spanclass="pre">Link</span></code> MDU to accommodate
<emclass="property"><spanclass="pre">class</span><spanclass="w"></span></em><spanclass="sig-prename descclassname"><spanclass="pre">RNS.</span></span><spanclass="sig-name descname"><spanclass="pre">MessageBase</span></span><aclass="headerlink"href="#RNS.MessageBase"title="Permalink to this definition">#</a></dt>
<dd><p>Base type for any messages sent or received on a Channel.
Subclasses must define the two abstract methods as well as
the <codeclass="docutils literal notranslate"><spanclass="pre">MSGTYPE</span></code> class variable.</p>
<spanclass="sig-name descname"><spanclass="pre">MSGTYPE</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">None</span></em><aclass="headerlink"href="#RNS.MessageBase.MSGTYPE"title="Permalink to this definition">#</a></dt>
<dd><p>Defines a unique identifier for a message class.</p>
<ulclass="simple">
<li><p>Must be unique within all classes registered with a <codeclass="docutils literal notranslate"><spanclass="pre">Channel</span></code></p></li>
<li><p>Must be less than <codeclass="docutils literal notranslate"><spanclass="pre">0xf000</span></code>. Values greater than or equal to <codeclass="docutils literal notranslate"><spanclass="pre">0xf000</span></code> are reserved.</p></li>
<emclass="property"><spanclass="pre">abstract</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">pack</span></span><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><spanclass="sig-return"><spanclass="sig-return-icon">→</span><spanclass="sig-return-typehint"><spanclass="pre">bytes</span></span></span><aclass="headerlink"href="#RNS.MessageBase.pack"title="Permalink to this definition">#</a></dt>
<dd><p>Create and return the binary representation of the message</p>
<emclass="property"><spanclass="pre">abstract</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">unpack</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">raw</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><spanclass="pre">bytes</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.MessageBase.unpack"title="Permalink to this definition">#</a></dt>
<dd><p>Populate message from binary representation</p>
<emclass="property"><spanclass="pre">class</span><spanclass="w"></span></em><spanclass="sig-prename descclassname"><spanclass="pre">RNS.</span></span><spanclass="sig-name descname"><spanclass="pre">Buffer</span></span><aclass="headerlink"href="#RNS.Buffer"title="Permalink to this definition">#</a></dt>
<dd><p>Static functions for creating buffered streams that send
and receive over a <codeclass="docutils literal notranslate"><spanclass="pre">Channel</span></code>.</p>
<p>These functions use <codeclass="docutils literal notranslate"><spanclass="pre">BufferedReader</span></code>, <codeclass="docutils literal notranslate"><spanclass="pre">BufferedWriter</span></code>,
and <codeclass="docutils literal notranslate"><spanclass="pre">BufferedRWPair</span></code> to add buffering to
<codeclass="docutils literal notranslate"><spanclass="pre">RawChannelReader</span></code> and <codeclass="docutils literal notranslate"><spanclass="pre">RawChannelWriter</span></code>.</p>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">create_reader</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">stream_id</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><spanclass="pre">int</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">channel</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><aclass="reference internal"href="#RNS.Channel.Channel"title="RNS.Channel.Channel"><spanclass="pre">Channel</span></a></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">ready_callback</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><spanclass="pre">Optional</span><spanclass="p"><spanclass="pre">[</span></span><spanclass="pre">Callable</span><spanclass="p"><spanclass="pre">[</span></span><spanclass="p"><spanclass="pre">[</span></span><spanclass="pre">int</span><spanclass="p"><spanclass="pre">]</span></span><spanclass="p"><spanclass="pre">,</span></span><spanclass="w"></span><spanclass="pre">None</span><spanclass="p"><spanclass="pre">]</span></span><spanclass="p"><spanclass="pre">]</span></span></span><spanclass="w"></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="default_value"><spanclass="pre">None</span></span></em><spanclass="sig-paren">)</span><spanclass="sig-return"><spanclass="sig-return-icon">→</span><spanclass="sig-return-typehint"><spanclass="pre">BufferedReader</span></span></span><aclass="headerlink"href="#RNS.Buffer.create_reader"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">create_writer</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">stream_id</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><spanclass="pre">int</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">channel</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><aclass="reference internal"href="#RNS.Channel.Channel"title="RNS.Channel.Channel"><spanclass="pre">Channel</span></a></span></em><spanclass="sig-paren">)</span><spanclass="sig-return"><spanclass="sig-return-icon">→</span><spanclass="sig-return-typehint"><spanclass="pre">BufferedWriter</span></span></span><aclass="headerlink"href="#RNS.Buffer.create_writer"title="Permalink to this definition">#</a></dt>
<dd><p>Create a buffered writer that writes binary data over
a <codeclass="docutils literal notranslate"><spanclass="pre">Channel</span></code>.</p>
<p>For more information on the writer-specific functions
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">create_bidirectional_buffer</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">receive_stream_id</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><spanclass="pre">int</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">send_stream_id</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><spanclass="pre">int</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">channel</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><aclass="reference internal"href="#RNS.Channel.Channel"title="RNS.Channel.Channel"><spanclass="pre">Channel</span></a></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">ready_callback</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><spanclass="pre">Optional</span><spanclass="p"><spanclass="pre">[</span></span><spanclass="pre">Callable</span><spanclass="p"><spanclass="pre">[</span></span><spanclass="p"><spanclass="pre">[</span></span><spanclass="pre">int</span><spanclass="p"><spanclass="pre">]</span></span><spanclass="p"><spanclass="pre">,</span></span><spanclass="w"></span><spanclass="pre">None</span><spanclass="p"><spanclass="pre">]</span></span><spanclass="p"><spanclass="pre">]</span></span></span><spanclass="w"></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="default_value"><spanclass="pre">None</span></span></em><spanclass="sig-paren">)</span><spanclass="sig-return"><spanclass="sig-return-icon">→</span><spanclass="sig-return-typehint"><spanclass="pre">BufferedRWPair</span></span></span><aclass="headerlink"href="#RNS.Buffer.create_bidirectional_buffer"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">class</span><spanclass="w"></span></em><spanclass="sig-prename descclassname"><spanclass="pre">RNS.</span></span><spanclass="sig-name descname"><spanclass="pre">RawChannelReader</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">stream_id</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><spanclass="pre">int</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">channel</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><aclass="reference internal"href="#RNS.Channel.Channel"title="RNS.Channel.Channel"><spanclass="pre">Channel</span></a></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.RawChannelReader"title="Permalink to this definition">#</a></dt>
<dd><p>An implementation of RawIOBase that receives
binary stream data sent over a <codeclass="docutils literal notranslate"><spanclass="pre">Channel</span></code>.</p>
<blockquote>
<div><p>This class generally need not be instantiated directly.
Use <aclass="reference internal"href="#RNS.Buffer.create_reader"title="RNS.Buffer.create_reader"><codeclass="xref py py-func docutils literal notranslate"><spanclass="pre">RNS.Buffer.create_reader()</span></code></a>,
<aclass="reference internal"href="#RNS.Buffer.create_writer"title="RNS.Buffer.create_writer"><codeclass="xref py py-func docutils literal notranslate"><spanclass="pre">RNS.Buffer.create_writer()</span></code></a>, and
<spanclass="sig-name descname"><spanclass="pre">__init__</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">stream_id</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><spanclass="pre">int</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">channel</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><aclass="reference internal"href="#RNS.Channel.Channel"title="RNS.Channel.Channel"><spanclass="pre">Channel</span></a></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.RawChannelReader.__init__"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">add_ready_callback</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">cb</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><spanclass="pre">Callable</span><spanclass="p"><spanclass="pre">[</span></span><spanclass="p"><spanclass="pre">[</span></span><spanclass="pre">int</span><spanclass="p"><spanclass="pre">]</span></span><spanclass="p"><spanclass="pre">,</span></span><spanclass="w"></span><spanclass="pre">None</span><spanclass="p"><spanclass="pre">]</span></span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.RawChannelReader.add_ready_callback"title="Permalink to this definition">#</a></dt>
<dd><p>Add a function to be called when new data is available.
The function should have the signature <codeclass="docutils literal notranslate"><spanclass="pre">(ready_bytes:</span><spanclass="pre">int)</span><spanclass="pre">-></span><spanclass="pre">None</span></code></p>
<spanclass="sig-name descname"><spanclass="pre">remove_ready_callback</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">cb</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><spanclass="pre">Callable</span><spanclass="p"><spanclass="pre">[</span></span><spanclass="p"><spanclass="pre">[</span></span><spanclass="pre">int</span><spanclass="p"><spanclass="pre">]</span></span><spanclass="p"><spanclass="pre">,</span></span><spanclass="w"></span><spanclass="pre">None</span><spanclass="p"><spanclass="pre">]</span></span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.RawChannelReader.remove_ready_callback"title="Permalink to this definition">#</a></dt>
<dd><p>Remove a function added with <aclass="reference internal"href="#RNS.RawChannelReader.add_ready_callback"title="RNS.RawChannelReader.add_ready_callback"><codeclass="xref py py-func docutils literal notranslate"><spanclass="pre">RNS.RawChannelReader.add_ready_callback()</span></code></a></p>
<emclass="property"><spanclass="pre">class</span><spanclass="w"></span></em><spanclass="sig-prename descclassname"><spanclass="pre">RNS.</span></span><spanclass="sig-name descname"><spanclass="pre">RawChannelWriter</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">stream_id</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><spanclass="pre">int</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">channel</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><aclass="reference internal"href="#RNS.Channel.Channel"title="RNS.Channel.Channel"><spanclass="pre">Channel</span></a></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.RawChannelWriter"title="Permalink to this definition">#</a></dt>
<dd><p>An implementation of RawIOBase that receives
binary stream data sent over a channel.</p>
<blockquote>
<div><p>This class generally need not be instantiated directly.
Use <aclass="reference internal"href="#RNS.Buffer.create_reader"title="RNS.Buffer.create_reader"><codeclass="xref py py-func docutils literal notranslate"><spanclass="pre">RNS.Buffer.create_reader()</span></code></a>,
<aclass="reference internal"href="#RNS.Buffer.create_writer"title="RNS.Buffer.create_writer"><codeclass="xref py py-func docutils literal notranslate"><spanclass="pre">RNS.Buffer.create_writer()</span></code></a>, and
<spanclass="sig-name descname"><spanclass="pre">__init__</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">stream_id</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><spanclass="pre">int</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">channel</span></span><spanclass="p"><spanclass="pre">:</span></span><spanclass="w"></span><spanclass="n"><aclass="reference internal"href="#RNS.Channel.Channel"title="RNS.Channel.Channel"><spanclass="pre">Channel</span></a></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.RawChannelWriter.__init__"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">class</span><spanclass="w"></span></em><spanclass="sig-prename descclassname"><spanclass="pre">RNS.</span></span><spanclass="sig-name descname"><spanclass="pre">Transport</span></span><aclass="headerlink"href="#RNS.Transport"title="Permalink to this definition">#</a></dt>
<spanclass="sig-name descname"><spanclass="pre">PATHFINDER_M</span></span><emclass="property"><spanclass="w"></span><spanclass="p"><spanclass="pre">=</span></span><spanclass="w"></span><spanclass="pre">128</span></em><aclass="headerlink"href="#RNS.Transport.PATHFINDER_M"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">register_announce_handler</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">handler</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Transport.register_announce_handler"title="Permalink to this definition">#</a></dt>
<ddclass="field-odd"><p><strong>handler</strong>– Must be an object with an <em>aspect_filter</em> attribute and a <em>received_announce(destination_hash, announced_identity, app_data)</em>
callable. Can optionally have a <em>receive_path_responses</em> attribute set to <codeclass="docutils literal notranslate"><spanclass="pre">True</span></code>, to also receive all path responses, in addition to live
announces. See the <aclass="reference internal"href="examples.html#example-announce"><spanclass="std std-ref">Announce Example</span></a> for more info.</p>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">deregister_announce_handler</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">handler</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Transport.deregister_announce_handler"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">has_path</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">destination_hash</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Transport.has_path"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">hops_to</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">destination_hash</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Transport.hops_to"title="Permalink to this definition">#</a></dt>
<ddclass="field-even"><p>The number of hops to the specified destination, or <codeclass="docutils literal notranslate"><spanclass="pre">RNS.Transport.PATHFINDER_M</span></code> if the number of hops is unknown.</p>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">next_hop</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">destination_hash</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Transport.next_hop"title="Permalink to this definition">#</a></dt>
<ddclass="field-even"><p>The destination hash as <em>bytes</em> for the next hop to the specified destination, or <em>None</em> if the next hop is unknown.</p>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">next_hop_interface</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">destination_hash</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Transport.next_hop_interface"title="Permalink to this definition">#</a></dt>
<emclass="property"><spanclass="pre">static</span><spanclass="w"></span></em><spanclass="sig-name descname"><spanclass="pre">request_path</span></span><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n"><spanclass="pre">destination_hash</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">on_interface</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">tag</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">None</span></span></em>, <emclass="sig-param"><spanclass="n"><spanclass="pre">recursive</span></span><spanclass="o"><spanclass="pre">=</span></span><spanclass="default_value"><spanclass="pre">False</span></span></em><spanclass="sig-paren">)</span><aclass="headerlink"href="#RNS.Transport.request_path"title="Permalink to this definition">#</a></dt>
<li><p><strong>destination_hash</strong>– A destination hash as <em>bytes</em>.</p></li>
<li><p><strong>on_interface</strong>– If specified, the path request will only be sent on this interface. In normal use, Reticulum handles this automatically, and this parameter should not be used.</p></li>
