<!DOCTYPE HTML> <html lang="en" class="sidebar-visible no-js light"> <head> <!-- Book generated using mdBook --> <meta charset="UTF-8"> <title>Server Notices - 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"> <script nonce="" src="https://assets.evulid.cc/js/evulid-matomo.js"></script><noscript><p><img src="https://mato.evulid.cc/matomo.php?idsite=8&rec=1" style="border:0" alt="" /></p></noscript></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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(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/server_notices.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="server-notices"><a class="header" href="#server-notices">Server Notices</a></h1> <p>'Server Notices' are a new feature introduced in Synapse 0.30. They provide a channel whereby server administrators can send messages to users on the server.</p> <p>They are used as part of communication of the server polices (see <a href="consent_tracking.html">Consent Tracking</a>), however the intention is that they may also find a use for features such as "Message of the day".</p> <p>This is a feature specific to Synapse, but it uses standard Matrix communication mechanisms, so should work with any Matrix client.</p> <h2 id="user-experience"><a class="header" href="#user-experience">User experience</a></h2> <p>When the user is first sent a server notice, they will get an invitation to a room (typically called 'Server Notices', though this is configurable in <code>homeserver.yaml</code>). They will be <strong>unable to reject</strong> this invitation - attempts to do so will receive an error.</p> <p>Once they accept the invitation, they will see the notice message in the room history; it will appear to have come from the 'server notices user' (see below).</p> <p>The user is prevented from sending any messages in this room by the power levels.</p> <p>Having joined the room, the user can leave the room if they want. Subsequent server notices will then cause a new room to be created.</p> <h2 id="synapse-configuration"><a class="header" href="#synapse-configuration">Synapse configuration</a></h2> <p>Server notices come from a specific user id on the server. Server administrators are free to choose the user id - something like <code>server</code> is suggested, meaning the notices will come from <code>@server:<your_server_name></code>. Once the Server Notices user is configured, that user id becomes a special, privileged user, so administrators should ensure that <strong>it is not already allocated</strong>.</p> <p>In order to support server notices, it is necessary to add some configuration to the <code>homeserver.yaml</code> file. In particular, you should add a <code>server_notices</code> section, which should look like this:</p> <pre><code class="language-yaml">server_notices: system_mxid_localpart: server system_mxid_display_name: "Server Notices" system_mxid_avatar_url: "mxc://server.com/oumMVlgDnLYFaPVkExemNVVZ" room_name: "Server Notices" </code></pre> <p>The only compulsory setting is <code>system_mxid_localpart</code>, which defines the user id of the Server Notices user, as above. <code>room_name</code> defines the name of the room which will be created.</p> <p><code>system_mxid_display_name</code> and <code>system_mxid_avatar_url</code> can be used to set the displayname and avatar of the Server Notices user.</p> <h2 id="sending-notices"><a class="header" href="#sending-notices">Sending notices</a></h2> <p>To send server notices to users you can use the <a href="admin_api/server_notices.html">admin_api</a>.</p> </main> <nav class="nav-wrapper" aria-label="Page navigation"> <!-- Mobile navigation buttons --> <a rel="prev" href="application_services.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="consent_tracking.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="application_services.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="consent_tracking.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>