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<ol class="chapter"><li class="chapter-item expanded affix "><li class="part-title">Introduction</li><li class="chapter-item expanded "><a href="../../../welcome_and_overview.html">Welcome and Overview</a></li><li class="chapter-item expanded affix "><li class="part-title">Setup</li><li class="chapter-item expanded "><a href="../../../setup/installation.html">Installation</a></li><li class="chapter-item expanded "><a href="../../../postgres.html">Using Postgres</a></li><li 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">Configuring a Turn Server</a></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 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Schemas</a></li><li class="chapter-item expanded "><a href="../../../development/experimental_features.html">Experimental features</a></li><li class="chapter-item expanded "><div>Synapse Architecture</div></li><li><ol class="section"><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 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<h1 id="federation-api"><a class="header" href="#federation-api">Federation API</a></h1>
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<p>This API allows a server administrator to manage Synapse's federation with other homeservers.</p>
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<p>Note: This API is new, experimental and "subject to change".</p>
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<h2 id="list-of-destinations"><a class="header" href="#list-of-destinations">List of destinations</a></h2>
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<p>This API gets the current destination retry timing info for all remote servers.</p>
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<p>The list contains all the servers with which the server federates,
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regardless of whether an error occurred or not.
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If an error occurs, it may take up to 20 minutes for the error to be displayed here,
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as a complete retry must have failed.</p>
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<p>The API is:</p>
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<p>A standard request with no filtering:</p>
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<pre><code>GET /_synapse/admin/v1/federation/destinations
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</code></pre>
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<p>A response body like the following is returned:</p>
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<pre><code class="language-json">{
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"destinations":[
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{
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"destination": "matrix.org",
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"retry_last_ts": 1557332397936,
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"retry_interval": 3000000,
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"failure_ts": 1557329397936,
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"last_successful_stream_ordering": null
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}
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],
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"total": 1
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}
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</code></pre>
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<p>To paginate, check for <code>next_token</code> and if present, call the endpoint again
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with <code>from</code> set to the value of <code>next_token</code>. This will return a new page.</p>
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<p>If the endpoint does not return a <code>next_token</code> then there are no more destinations
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to paginate through.</p>
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<p><strong>Parameters</strong></p>
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<p>The following query parameters are available:</p>
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<ul>
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<li><code>from</code> - Offset in the returned list. Defaults to <code>0</code>.</li>
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<li><code>limit</code> - Maximum amount of destinations to return. Defaults to <code>100</code>.</li>
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<li><code>order_by</code> - The method in which to sort the returned list of destinations.
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Valid values are:
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<ul>
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<li><code>destination</code> - Destinations are ordered alphabetically by remote server name.
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This is the default.</li>
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<li><code>retry_last_ts</code> - Destinations are ordered by time of last retry attempt in ms.</li>
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<li><code>retry_interval</code> - Destinations are ordered by how long until next retry in ms.</li>
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<li><code>failure_ts</code> - Destinations are ordered by when the server started failing in ms.</li>
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<li><code>last_successful_stream_ordering</code> - Destinations are ordered by the stream ordering
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of the most recent successfully-sent PDU.</li>
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</ul>
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</li>
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<li><code>dir</code> - Direction of room order. Either <code>f</code> for forwards or <code>b</code> for backwards. Setting
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this value to <code>b</code> will reverse the above sort order. Defaults to <code>f</code>.</li>
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</ul>
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<p><em>Caution:</em> The database only has an index on the column <code>destination</code>.
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This means that if a different sort order is used,
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this can cause a large load on the database, especially for large environments.</p>
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<p><strong>Response</strong></p>
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<p>The following fields are returned in the JSON response body:</p>
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<ul>
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<li><code>destinations</code> - An array of objects, each containing information about a destination.
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Destination objects contain the following fields:
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<ul>
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<li><code>destination</code> - string - Name of the remote server to federate.</li>
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<li><code>retry_last_ts</code> - integer - The last time Synapse tried and failed to reach the
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remote server, in ms. This is <code>0</code> if the last attempt to communicate with the
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remote server was successful.</li>
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<li><code>retry_interval</code> - integer - How long since the last time Synapse tried to reach
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the remote server before trying again, in ms. This is <code>0</code> if no further retrying occuring.</li>
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<li><code>failure_ts</code> - nullable integer - The first time Synapse tried and failed to reach the
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remote server, in ms. This is <code>null</code> if communication with the remote server has never failed.</li>
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<li><code>last_successful_stream_ordering</code> - nullable integer - The stream ordering of the most
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recent successfully-sent <a href="understanding_synapse_through_grafana_graphs.html#federation">PDU</a>
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to this destination, or <code>null</code> if this information has not been tracked yet.</li>
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</ul>
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</li>
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<li><code>next_token</code>: string representing a positive integer - Indication for pagination. See above.</li>
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<li><code>total</code> - integer - Total number of destinations.</li>
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</ul>
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<h1 id="destination-details-api"><a class="header" href="#destination-details-api">Destination Details API</a></h1>
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<p>This API gets the retry timing info for a specific remote server.</p>
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<p>The API is:</p>
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<pre><code>GET /_synapse/admin/v1/federation/destinations/<destination>
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</code></pre>
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<p>A response body like the following is returned:</p>
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<pre><code class="language-json">{
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"destination": "matrix.org",
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"retry_last_ts": 1557332397936,
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"retry_interval": 3000000,
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"failure_ts": 1557329397936,
|
|
"last_successful_stream_ordering": null
|
|
}
|
|
</code></pre>
|
|
<p><strong>Response</strong></p>
|
|
<p>The response fields are the same like in the <code>destinations</code> array in
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<a href="#list-of-destinations">List of destinations</a> response.</p>
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