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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" class="active">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 expanded "><a href="upgrade.html">Upgrading between Synapse Versions</a></li><li class="chapter-item expanded "><a href="MSC1711_certificates_FAQ.html">Upgrading from pre-Synapse 1.0</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 href="usage/configuration/index.html">Configuration</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="usage/configuration/homeserver_sample_config.html">Homeserver Sample Config File</a></li><li class="chapter-item expanded "><a href="usage/configuration/logging_sample_config.html">Logging Sample Config File</a></li><li class="chapter-item expanded "><a href="structured_logging.html">Structured Logging</a></li><li class="chapter-item expanded "><a href="templates.html">Templates</a></li><li class="chapter-item expanded "><a href="usage/configuration/user_authentication/index.html">User Authentication</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="openid.html">OpenID Connect</a></li><li class="chapter-item expanded "><div>SAML</div></li><li class="chapter-item expanded "><div>CAS</div></li><li class="chapter-item expanded "><a href="sso_mapping_providers.html">SSO Mapping Providers</a></li></ol></li><li class="chapter-item expanded "><a href="password_auth_providers.html">Password Auth Providers</a></li><li class="chapter-item expanded "><a href="jwt.html">JSON Web Tokens</a></li></ol></li><li class="chapter-item expanded "><a href="CAPTCHA_SETUP.html">Registration Captcha</a></li><li class="chapter-item expanded "><a href="application_services.html">Application Services</a></li><li class="chapter-item expanded "><a href="server_notices.html">Server Notices</a></li><li class="chapter-item expanded "><a href="consent_tracking.html">Consent Tracking</a></li><li class="chapter-item expanded "><a href="development/url_previews.html">URL Previews</a></li><li class="chapter-item expanded "><a href="user_directory.html">User Directory</a></li><li class="chapter-item expanded "><a href="message_retention_policies.html">Message Retention Policies</a></li><li class="chapter-item expanded "><a href="modules/index.html">Pluggable Modules</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="modules/writing_a_module.html">Writing a module</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="modules/spam_checker_callbacks.html">Spam checker callbacks</a></li><li class="chapter-item expanded "><a href="modules/third_party_rules_callbacks.html">Third-party rules callbacks</a></li><li class="chapter-item expanded "><a href="modules/presence_router_callbacks.html">Presence router callbacks</a></li><li class="chapter-item expanded "><a href="modules/account_validity_callbacks.html">Account validity callbacks</a></li><li class="chapter-item expanded "><a href="modules/password_auth_provider_callbacks.html">Password auth provider callbacks</a></li><li class="chapter-item expanded "><a href="modules/porting_legacy_module.html">Porting a legacy module to the new interface</a></li></ol></li></ol></li><li class="chapter-item expanded "><a href="workers.html">Workers</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="synctl_workers.html">Using synctl with Workers</a></li><li class="chapter-item expanded "><a href="systemd-with-workers/index.html">Systemd</a></li></ol></li></ol></li><li class="chapter-item expanded "><a href="usage/administration/index.html">Administration</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="usage/administration/admin_api/index.html">Admin API</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="admin_api/account_validity.html">Account Validity</a></li><li class="chapter-item expanded "><a href="usage/administration/admin_api/background_updates.html">Background Updates</a></li><li class="chapter-item expanded "><a href="admin_api/delete_group.html">Delete Group</a></li><li class="chapter-item expanded "><a href="admin_api/event_reports.html">Event Reports</a></li><li class="chapter-item expanded "><a href="admin_api/media_admin_api.html">Media</a></li><li class="chapter-item expanded "><a href="admin_api/purge_history_api.html">Purge History</a></li><li class="chapter-item expanded "><a href="admin_api/register_api.html">Register Users</a></li><li class="chapter-item expanded "><a href="usage/administration/admin_api/registration_tokens.html">Registration Tokens</a></li><li class="chapter-item expanded "><a href="admin_api/room_membership.html">Manipulate Room Membership</a></li><li class="chapter-item expanded "><a href="admin_api/rooms.html">Rooms</a></li><li class="chapter-item expanded "><a href="admin_api/server_notices.html">Server Notices</a></li><li class="chapter-item expanded "><a href="admin_api/statistics.html">Statistics</a></li><li class="chapter-item expanded "><a href="admin_api/user_admin_api.html">Users</a></li><li class="chapter-item expanded "><a href="admin_api/version_api.html">Server Version</a></li></ol></li><li class="chapter-item expanded "><a href="manhole.html">Manhole</a></li><li class="chapter-item expanded "><a href="metrics-howto.html">Monitoring</a></li><li class="chapter-item expanded "><a href="usage/administration/request_log.html">Request log format</a></li><li class="chapter-item expanded "><div>Scripts</div></li></ol></li><li class="chapter-item expanded "><li class="part-title">Development</li><li class="chapter-item expanded "><a href="development/contributing_guide.html">Contributing Guide</a></li><li class="chapter-item expanded "><a href="code_style.html">Code Style</a></li><li class="chapter-item expanded "><a href="development/git.html">Git Usage</a></li><li class="chapter-item expanded 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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></ol>
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<h1 class="menu-title">Synapse</h1>
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<h1 id="introduction"><a class="header" href="#introduction">Introduction</a></h1>
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<p>Welcome to the documentation repository for Synapse, a
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<a href="https://matrix.org">Matrix</a> homeserver implementation developed by the matrix.org core
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team.</p>
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<h2 id="installing-and-using-synapse"><a class="header" href="#installing-and-using-synapse">Installing and using Synapse</a></h2>
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<p>This documentation covers topics for <strong>installation</strong>, <strong>configuration</strong> and
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<strong>maintainence</strong> of your Synapse process:</p>
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<ul>
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<li>
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<p>Learn how to <a href="setup/installation.html">install</a> and
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<a href="usage/configuration/index.html">configure</a> your own instance, perhaps with <a href="usage/configuration/user_authentication/index.html">Single
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Sign-On</a>.</p>
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</li>
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<li>
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<p>See how to <a href="upgrade.html">upgrade</a> between Synapse versions.</p>
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</li>
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<li>
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<p>Administer your instance using the <a href="usage/administration/admin_api/index.html">Admin
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API</a>, installing <a href="modules/index.html">pluggable
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modules</a>, or by accessing the <a href="manhole.html">manhole</a>.</p>
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</li>
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<li>
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<p>Learn how to <a href="usage/administration/request_log.html">read log lines</a>, configure
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<a href="usage/configuration/logging_sample_config.html">logging</a> or set up <a href="structured_logging.html">structured
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logging</a>.</p>
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</li>
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<li>
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<p>Scale Synapse through additional <a href="workers.html">worker processes</a>.</p>
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</li>
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<li>
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<p>Set up <a href="metrics-howto.html">monitoring and metrics</a> to keep an eye on your
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Synapse instance's performance.</p>
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</li>
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</ul>
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<h2 id="developing-on-synapse"><a class="header" href="#developing-on-synapse">Developing on Synapse</a></h2>
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<p>Contributions are welcome! Synapse is primarily written in
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<a href="https://python.org">Python</a>. As a developer, you may be interested in the
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following documentation:</p>
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<ul>
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<li>
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<p>Read the <a href="development/contributing_guide.html">Contributing Guide</a>. It is meant
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to walk new contributors through the process of developing and submitting a
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change to the Synapse codebase (which is <a href="https://github.com/matrix-org/synapse">hosted on
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GitHub</a>).</p>
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</li>
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<li>
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<p>Set up your <a href="development/contributing_guide.html#2-what-do-i-need">development
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environment</a>, then learn
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how to <a href="development/contributing_guide.html#run-the-linters">lint</a> and
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<a href="development/contributing_guide.html#8-test-test-test">test</a> your code.</p>
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</li>
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<li>
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<p>Look at <a href="https://github.com/matrix-org/synapse/issues">the issue tracker</a> for
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bugs to fix or features to add. If you're new, it may be best to start with
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those labeled <a href="https://github.com/matrix-org/synapse/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22">good first
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issue</a>.</p>
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</li>
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<li>
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<p>Understand <a href="development/internal_documentation/index.html">how Synapse is
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built</a>, how to <a href="development/database_schema.html">migrate
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database schemas</a>, learn about
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<a href="federate.html">federation</a> and how to <a href="federate.html#running-a-demo-federation-of-synapses">set up a local
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federation</a> for development.</p>
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</li>
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<li>
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<p>We like to keep our <code>git</code> history clean. <a href="development/git.html">Learn</a> how to
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do so!</p>
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</li>
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<li>
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<p>And finally, contribute to this documentation! The source for which is
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<a href="https://github.com/matrix-org/synapse/tree/develop/docs">located here</a>.</p>
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</li>
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</ul>
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<h2 id="donating-to-synapse-development"><a class="header" href="#donating-to-synapse-development">Donating to Synapse development</a></h2>
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<p>Want to help keep Synapse going but don't know how to code? Synapse is a
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<a href="https://matrix.org">Matrix.org Foundation</a> project. Consider becoming a
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supportor on <a href="https://liberapay.com/matrixdotorg">Liberapay</a>,
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<a href="https://patreon.com/matrixdotorg">Patreon</a> or through
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<a href="https://paypal.me/matrixdotorg">PayPal</a> via a one-time donation.</p>
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<p>If you are an organisation or enterprise and would like to sponsor development,
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reach out to us over email at: support (at) matrix.org</p>
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<h2 id="reporting-a-security-vulnerability"><a class="header" href="#reporting-a-security-vulnerability">Reporting a security vulnerability</a></h2>
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<p>If you've found a security issue in Synapse or any other Matrix.org Foundation
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project, please report it to us in accordance with our <a href="https://www.matrix.org/security-disclosure-policy/">Security Disclosure
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Policy</a>. Thank you!</p>
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