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diff --git a/v1.75/turn-howto.html b/v1.75/turn-howto.html new file mode 100644 index 0000000000..02dc767766 --- /dev/null +++ b/v1.75/turn-howto.html @@ -0,0 +1,346 @@ +<!DOCTYPE HTML> +<html lang="en" class="sidebar-visible no-js light"> + <head> + <!-- Book generated using mdBook --> + <meta charset="UTF-8"> + <title>Configuring a Turn Server - Synapse</title> + <!-- Custom HTML head --> + <meta content="text/html; charset=utf-8" http-equiv="Content-Type"> + <meta name="description" content=""> + <meta name="viewport" content="width=device-width, initial-scale=1"> + <meta name="theme-color" content="#ffffff" /> + + <link rel="icon" href="favicon.svg"> + <link rel="shortcut icon" href="favicon.png"> + <link rel="stylesheet" href="css/variables.css"> + <link rel="stylesheet" href="css/general.css"> + <link rel="stylesheet" href="css/chrome.css"> + <link rel="stylesheet" href="css/print.css" media="print"> + <!-- Fonts --> + <link rel="stylesheet" href="FontAwesome/css/font-awesome.css"> + <link rel="stylesheet" href="fonts/fonts.css"> + <!-- Highlight.js Stylesheets --> + <link rel="stylesheet" href="highlight.css"> + <link rel="stylesheet" href="tomorrow-night.css"> + <link rel="stylesheet" href="ayu-highlight.css"> + + <!-- Custom theme stylesheets --> + <link rel="stylesheet" href="docs/website_files/table-of-contents.css"> + <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css"> + <link rel="stylesheet" href="docs/website_files/indent-section-headers.css"> + </head> + <body> + <!-- Provide site root to javascript --> + <script type="text/javascript"> + var path_to_root = ""; + var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? 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class="chapter-item expanded "><a href="reverse_proxy.html">Configuring a Reverse Proxy</a></li><li class="chapter-item expanded "><a href="setup/forward_proxy.html">Configuring a Forward/Outbound Proxy</a></li><li class="chapter-item expanded "><a href="turn-howto.html" class="active">Configuring a Turn Server</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="setup/turn/coturn.html">coturn TURN server</a></li><li class="chapter-item expanded "><a href="setup/turn/eturnal.html">eturnal TURN server</a></li></ol></li><li class="chapter-item expanded "><a href="delegate.html">Delegation</a></li><li class="chapter-item expanded affix "><li class="part-title">Upgrading</li><li class="chapter-item expanded "><a href="upgrade.html">Upgrading between Synapse Versions</a></li><li class="chapter-item expanded affix "><li class="part-title">Usage</li><li class="chapter-item expanded "><a href="federate.html">Federation</a></li><li class="chapter-item expanded "><a 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management</a></li><li class="chapter-item expanded "><div>Synapse Architecture</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="development/synapse_architecture/cancellation.html">Cancellation</a></li><li class="chapter-item expanded "><a href="log_contexts.html">Log Contexts</a></li><li class="chapter-item expanded "><a href="replication.html">Replication</a></li><li class="chapter-item expanded "><a href="tcp_replication.html">TCP Replication</a></li></ol></li><li class="chapter-item expanded "><a href="development/internal_documentation/index.html">Internal Documentation</a></li><li><ol class="section"><li class="chapter-item expanded "><div>Single Sign-On</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="development/saml.html">SAML</a></li><li class="chapter-item expanded "><a href="development/cas.html">CAS</a></li></ol></li><li class="chapter-item expanded "><a href="development/room-dag-concepts.html">Room DAG concepts</a></li><li class="chapter-item expanded "><div>State Resolution</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="auth_chain_difference_algorithm.html">The Auth Chain Difference Algorithm</a></li></ol></li><li class="chapter-item expanded "><a href="media_repository.html">Media Repository</a></li><li class="chapter-item expanded "><a href="room_and_user_statistics.html">Room and User Statistics</a></li></ol></li><li class="chapter-item expanded "><div>Scripts</div></li><li class="chapter-item expanded affix "><li class="part-title">Other</li><li class="chapter-item expanded "><a href="deprecation_policy.html">Dependency Deprecation Policy</a></li><li class="chapter-item expanded "><a href="other/running_synapse_on_single_board_computers.html">Running Synapse on a Single-Board Computer</a></li></ol> + </div> + <div id="sidebar-resize-handle" class="sidebar-resize-handle"></div> + </nav> + + <div id="page-wrapper" class="page-wrapper"> + + <div 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(Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar"> + <i class="fa fa-search"></i> + </button> + </div> + + <h1 class="menu-title">Synapse</h1> + + <div class="right-buttons"> + <a href="print.html" title="Print this book" aria-label="Print this book"> + <i id="print-button" class="fa fa-print"></i> + </a> + <a href="https://github.com/matrix-org/synapse" title="Git repository" aria-label="Git repository"> + <i id="git-repository-button" class="fa fa-github"></i> + </a> + <a href="https://github.com/matrix-org/synapse/edit/develop/docs/turn-howto.md" title="Suggest an edit" aria-label="Suggest an edit"> + <i id="git-edit-button" class="fa fa-edit"></i> + </a> + </div> + </div> + + <div id="search-wrapper" class="hidden"> + <form id="searchbar-outer" class="searchbar-outer"> + <input type="search" id="searchbar" name="searchbar" placeholder="Search this book ..." aria-controls="searchresults-outer" aria-describedby="searchresults-header"> + </form> + <div id="searchresults-outer" class="searchresults-outer hidden"> + <div id="searchresults-header" class="searchresults-header"></div> + <ul id="searchresults"> + </ul> + </div> + </div> + <!-- Apply ARIA attributes after the sidebar and the sidebar toggle button are added to the DOM --> + <script type="text/javascript"> + document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible'); + document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible'); + Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) { + link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1); + }); + </script> + + <div id="content" class="content"> + <main> + <!-- Page table of contents --> + <div class="sidetoc"> + <nav class="pagetoc"></nav> + </div> + + <h1 id="overview"><a class="header" href="#overview">Overview</a></h1> +<p>This document explains how to enable VoIP relaying on your homeserver with +TURN.</p> +<p>The synapse Matrix homeserver supports integration with TURN server via the +<a href="https://tools.ietf.org/html/draft-uberti-behave-turn-rest-00">TURN server REST API</a>. This +allows the homeserver to generate credentials that are valid for use on the +TURN server through the use of a secret shared between the homeserver and the +TURN server.</p> +<p>This documentation provides two TURN server configuration examples:</p> +<ul> +<li><a href="setup/turn/coturn.html">coturn</a></li> +<li><a href="setup/turn/eturnal.html">eturnal</a></li> +</ul> +<h2 id="requirements"><a class="header" href="#requirements">Requirements</a></h2> +<p>For TURN relaying to work, the TURN service must be hosted on a server/endpoint with a public IP.</p> +<p>Hosting TURN behind NAT requires port forwaring and for the NAT gateway to have a public IP. +However, even with appropriate configuration, NAT is known to cause issues and to often not work.</p> +<p>Afterwards, the homeserver needs some further configuration.</p> +<h2 id="synapse-setup"><a class="header" href="#synapse-setup">Synapse setup</a></h2> +<p>Your homeserver configuration file needs the following extra keys:</p> +<ol> +<li><a href="usage/configuration/config_documentation.html#turn_uris"><code>turn_uris</code></a></li> +<li><a href="usage/configuration/config_documentation.html#turn_shared_secret"><code>turn_shared_secret</code></a></li> +<li><a href="usage/configuration/config_documentation.html#turn_user_lifetime"><code>turn_user_lifetime</code></a></li> +<li><a href="usage/configuration/config_documentation.html#turn_allow_guests"><code>turn_allow_guests</code></a></li> +</ol> +<p>As an example, here is the relevant section of the config file for <code>matrix.org</code>. The +<code>turn_uris</code> are appropriate for TURN servers listening on the default ports, with no TLS.</p> +<pre><code>turn_uris: [ "turn:turn.matrix.org?transport=udp", "turn:turn.matrix.org?transport=tcp" ] +turn_shared_secret: "n0t4ctuAllymatr1Xd0TorgSshar3d5ecret4obvIousreAsons" +turn_user_lifetime: 86400000 +turn_allow_guests: true +</code></pre> +<p>After updating the homeserver configuration, you must restart synapse:</p> +<ul> +<li>If you use synctl: +<pre><code class="language-sh"># Depending on how Synapse is installed, synctl may already be on +# your PATH. If not, you may need to activate a virtual environment. +synctl restart +</code></pre> +</li> +<li>If you use systemd: +<pre><code class="language-sh">systemctl restart matrix-synapse.service +</code></pre> +</li> +</ul> +<p>... and then reload any clients (or wait an hour for them to refresh their +settings).</p> +<h2 id="troubleshooting"><a class="header" href="#troubleshooting">Troubleshooting</a></h2> +<p>The normal symptoms of a misconfigured TURN server are that calls between +devices on different networks ring, but get stuck at "call +connecting". Unfortunately, troubleshooting this can be tricky.</p> +<p>Here are a few things to try:</p> +<ul> +<li> +<p>Check that you have opened your firewall to allow TCP and UDP traffic to the +TURN ports (normally 3478 and 5349).</p> +</li> +<li> +<p>Check that you have opened your firewall to allow UDP traffic to the UDP +relay ports (49152-65535 by default).</p> +</li> +<li> +<p>Try disabling TLS/DTLS listeners and enable only its (unencrypted) +TCP/UDP listeners. (This will only leave signaling traffic unencrypted; +voice & video WebRTC traffic is always encrypted.)</p> +</li> +<li> +<p>Some WebRTC implementations (notably, that of Google Chrome) appear to get +confused by TURN servers which are reachable over IPv6 (this appears to be +an unexpected side-effect of its handling of multiple IP addresses as +defined by +<a href="https://tools.ietf.org/html/draft-ietf-rtcweb-ip-handling-12"><code>draft-ietf-rtcweb-ip-handling</code></a>).</p> +<p>Try removing any AAAA records for your TURN server, so that it is only +reachable over IPv4.</p> +</li> +<li> +<p>If your TURN server is behind NAT:</p> +<ul> +<li> +<p>double-check that your NAT gateway is correctly forwarding all TURN +ports (normally 3478 & 5349 for TCP & UDP TURN traffic, and 49152-65535 for the UDP +relay) to the NAT-internal address of your TURN server. If advertising +both IPv4 and IPv6 external addresses via the <code>external-ip</code> option, ensure +that the NAT is forwarding both IPv4 and IPv6 traffic to the IPv4 and IPv6 +internal addresses of your TURN server. When in doubt, remove AAAA records +for your TURN server and specify only an IPv4 address as your <code>external-ip</code>.</p> +</li> +<li> +<p>ensure that your TURN server uses the NAT gateway as its default route.</p> +</li> +</ul> +</li> +<li> +<p>Enable more verbose logging, in <code>coturn</code> via the <code>verbose</code> setting:</p> +<pre><code>verbose +</code></pre> +<p>or with <code>eturnal</code> with the shell command <code>eturnalctl loglevel debug</code> or in the configuration file (the service needs to <a href="https://eturnal.net/documentation/#Operation">reload</a> for it to become effective):</p> +<pre><code class="language-yaml"> ## Logging configuration: + log_level: debug +</code></pre> +<p>... and then see if there are any clues in its logs.</p> +</li> +<li> +<p>If you are using a browser-based client under Chrome, check +<code>chrome://webrtc-internals/</code> for insights into the internals of the +negotiation. On Firefox, check the "Connection Log" on <code>about:webrtc</code>.</p> +<p>(Understanding the output is beyond the scope of this document!)</p> +</li> +<li> +<p>You can test your Matrix homeserver TURN setup with <a href="https://test.voip.librepush.net/">https://test.voip.librepush.net/</a>. +Note that this test is not fully reliable yet, so don't be discouraged if +the test fails. +<a href="https://github.com/matrix-org/voip-tester">Here</a> is the github repo of the +source of the tester, where you can file bug reports.</p> +</li> +<li> +<p>There is a WebRTC test tool at +<a href="https://webrtc.github.io/samples/src/content/peerconnection/trickle-ice/">https://webrtc.github.io/samples/src/content/peerconnection/trickle-ice/</a>. To +use it, you will need a username/password for your TURN server. You can +either:</p> +<ul> +<li> +<p>look for the <code>GET /_matrix/client/r0/voip/turnServer</code> request made by a +matrix client to your homeserver in your browser's network inspector. In +the response you should see <code>username</code> and <code>password</code>. Or:</p> +</li> +<li> +<p>Use the following shell commands for <code>coturn</code>:</p> +<pre><code class="language-sh">secret=staticAuthSecretHere + +u=$((`date +%s` + 3600)):test +p=$(echo -n $u | openssl dgst -hmac $secret -sha1 -binary | base64) +echo -e "username: $u\npassword: $p" +</code></pre> +<p>or for <code>eturnal</code></p> +<pre><code class="language-sh">eturnalctl credentials +</code></pre> +</li> +<li> +<p>Or (<strong>coturn only</strong>): Temporarily configure <code>coturn</code> to accept a static +username/password. To do this, comment out <code>use-auth-secret</code> and +<code>static-auth-secret</code> and add the following:</p> +<pre><code>lt-cred-mech +user=username:password +</code></pre> +<p><strong>Note</strong>: these settings will not take effect unless <code>use-auth-secret</code> +and <code>static-auth-secret</code> are disabled.</p> +<p>Restart coturn after changing the configuration file.</p> +<p>Remember to restore the original settings to go back to testing with +Matrix clients!</p> +</li> +</ul> +<p>If the TURN server is working correctly, you should see at least one <code>relay</code> +entry in the results.</p> +</li> +</ul> + + </main> + + <nav class="nav-wrapper" aria-label="Page navigation"> + <!-- Mobile navigation buttons --> + <a rel="prev" href="setup/forward_proxy.html" class="mobile-nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left"> + <i class="fa fa-angle-left"></i> + </a> + <a rel="next" href="setup/turn/coturn.html" class="mobile-nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right"> + <i class="fa fa-angle-right"></i> + </a> + <div style="clear: both"></div> + </nav> + </div> + </div> + + <nav class="nav-wide-wrapper" aria-label="Page navigation"> + <a rel="prev" href="setup/forward_proxy.html" class="nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left"> + <i class="fa fa-angle-left"></i> + </a> + <a rel="next" href="setup/turn/coturn.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right"> + <i class="fa fa-angle-right"></i> + </a> + </nav> + + </div> + + <script type="text/javascript"> + window.playground_copyable = true; + </script> + <script src="elasticlunr.min.js" type="text/javascript" charset="utf-8"></script> + <script src="mark.min.js" type="text/javascript" charset="utf-8"></script> + <script src="searcher.js" type="text/javascript" charset="utf-8"></script> + <script src="clipboard.min.js" type="text/javascript" charset="utf-8"></script> + <script src="highlight.js" type="text/javascript" charset="utf-8"></script> + <script src="book.js" type="text/javascript" charset="utf-8"></script> + + <!-- Custom JS scripts --> + <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script> + </body> +</html> \ No newline at end of file |