mirror of
https://github.com/element-hq/synapse
synced 2024-07-15 05:54:06 +00:00
327 lines
31 KiB
HTML
327 lines
31 KiB
HTML
<!DOCTYPE HTML>
|
|
<html lang="en" class="sidebar-visible no-js light">
|
|
<head>
|
|
<!-- Book generated using mdBook -->
|
|
<meta charset="UTF-8">
|
|
<title>Refresh Tokens - 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">
|
|
<link rel="stylesheet" href="../../../docs/website_files/version-picker.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 ? "navy" : "light";
|
|
</script>
|
|
|
|
<!-- Work around some values being stored in localStorage wrapped in quotes -->
|
|
<script type="text/javascript">
|
|
try {
|
|
var theme = localStorage.getItem('mdbook-theme');
|
|
var sidebar = localStorage.getItem('mdbook-sidebar');
|
|
if (theme.startsWith('"') && theme.endsWith('"')) {
|
|
localStorage.setItem('mdbook-theme', theme.slice(1, theme.length - 1));
|
|
}
|
|
if (sidebar.startsWith('"') && sidebar.endsWith('"')) {
|
|
localStorage.setItem('mdbook-sidebar', sidebar.slice(1, sidebar.length - 1));
|
|
}
|
|
} catch (e) { }
|
|
</script>
|
|
|
|
<!-- Set the theme before any content is loaded, prevents flash -->
|
|
<script type="text/javascript">
|
|
var theme;
|
|
try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { }
|
|
if (theme === null || theme === undefined) { theme = default_theme; }
|
|
var html = document.querySelector('html');
|
|
html.classList.remove('no-js')
|
|
html.classList.remove('light')
|
|
html.classList.add(theme);
|
|
html.classList.add('js');
|
|
</script>
|
|
|
|
<!-- Hide / unhide sidebar before it is displayed -->
|
|
<script type="text/javascript">
|
|
var html = document.querySelector('html');
|
|
var sidebar = 'hidden';
|
|
if (document.body.clientWidth >= 1080) {
|
|
try { sidebar = localStorage.getItem('mdbook-sidebar'); } catch(e) { }
|
|
sidebar = sidebar || 'visible';
|
|
}
|
|
html.classList.remove('sidebar-visible');
|
|
html.classList.add("sidebar-" + sidebar);
|
|
</script>
|
|
|
|
<nav id="sidebar" class="sidebar" aria-label="Table of contents">
|
|
<div class="sidebar-scrollbox">
|
|
<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><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 href="../../../usage/configuration/index.html">Configuration</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../../usage/configuration/config_documentation.html">Configuration Manual</a></li><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 "><a href="../../../usage/configuration/user_authentication/single_sign_on/index.html">Single-Sign On</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../../openid.html">OpenID Connect</a></li><li class="chapter-item expanded "><a href="../../../usage/configuration/user_authentication/single_sign_on/saml.html">SAML</a></li><li class="chapter-item expanded "><a href="../../../usage/configuration/user_authentication/single_sign_on/cas.html">CAS</a></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><li class="chapter-item expanded "><a href="../../../usage/configuration/user_authentication/refresh_tokens.html" class="active">Refresh 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="../../../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/background_update_controller_callbacks.html">Background update controller callbacks</a></li><li class="chapter-item expanded "><a href="../../../modules/account_data_callbacks.html">Account data callbacks</a></li><li class="chapter-item expanded "><a href="../../../modules/add_extra_fields_to_client_events_unsigned.html">Add extra fields to client events unsigned section 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/event_reports.html">Event Reports</a></li><li class="chapter-item expanded "><a href="../../../admin_api/experimental_features.html">Experimental Features</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><li class="chapter-item expanded "><a href="../../../usage/administration/admin_api/federation.html">Federation</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><ol class="section"><li class="chapter-item expanded "><a href="../../../usage/administration/monitoring/reporting_homeserver_usage_statistics.html">Reporting Homeserver Usage Statistics</a></li></ol></li><li class="chapter-item expanded "><a href="../../../usage/administration/monthly_active_users.html">Monthly Active Users</a></li><li class="chapter-item expanded "><a href="../../../usage/administration/understanding_synapse_through_grafana_graphs.html">Understanding Synapse Through Grafana Graphs</a></li><li class="chapter-item expanded "><a href="../../../usage/administration/useful_sql_for_admins.html">Useful SQL for Admins</a></li><li class="chapter-item expanded "><a href="../../../usage/administration/database_maintenance_tools.html">Database Maintenance Tools</a></li><li class="chapter-item expanded "><a href="../../../usage/administration/state_groups.html">State Groups</a></li><li class="chapter-item expanded "><a href="../../../usage/administration/request_log.html">Request log format</a></li><li class="chapter-item expanded "><a href="../../../usage/administration/admin_faq.html">Admin FAQ</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/reviews.html">Reviewing Code</a></li><li class="chapter-item expanded "><a href="../../../development/releases.html">Release Cycle</a></li><li class="chapter-item expanded "><a href="../../../development/git.html">Git Usage</a></li><li class="chapter-item expanded "><div>Testing</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../../development/demo.html">Demo scripts</a></li></ol></li><li class="chapter-item expanded "><a href="../../../opentracing.html">OpenTracing</a></li><li class="chapter-item expanded "><a href="../../../development/database_schema.html">Database Schemas</a></li><li class="chapter-item expanded "><a href="../../../development/experimental_features.html">Experimental features</a></li><li class="chapter-item expanded "><a href="../../../development/dependencies.html">Dependency 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="../../../development/synapse_architecture/streams.html">Streams</a></li><li class="chapter-item expanded "><a href="../../../tcp_replication.html">TCP Replication</a></li><li class="chapter-item expanded "><a href="../../../development/synapse_architecture/faster_joins.html">Faster remote joins</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 class="page">
|
|
<div id="menu-bar-hover-placeholder"></div>
|
|
<div id="menu-bar" class="menu-bar sticky bordered">
|
|
<div class="left-buttons">
|
|
<button id="sidebar-toggle" class="icon-button" type="button" title="Toggle Table of Contents" aria-label="Toggle Table of Contents" aria-controls="sidebar">
|
|
<i class="fa fa-bars"></i>
|
|
</button>
|
|
<button id="theme-toggle" class="icon-button" type="button" title="Change theme" aria-label="Change theme" aria-haspopup="true" aria-expanded="false" aria-controls="theme-list">
|
|
<i class="fa fa-paint-brush"></i>
|
|
</button>
|
|
<ul id="theme-list" class="theme-popup" aria-label="Themes" role="menu">
|
|
<li role="none"><button role="menuitem" class="theme" id="light">Light (default)</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="rust">Rust</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="coal">Coal</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="navy">Navy</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="ayu">Ayu</button></li>
|
|
</ul>
|
|
<button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
|
|
<i class="fa fa-search"></i>
|
|
</button>
|
|
<div class="version-picker">
|
|
<div class="dropdown">
|
|
<div class="select">
|
|
<span></span>
|
|
<i class="fa fa-chevron-down"></i>
|
|
</div>
|
|
<input type="hidden" name="version">
|
|
<ul class="dropdown-menu">
|
|
<!-- Versions will be added dynamically in version-picker.js -->
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
</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/element-hq/synapse" title="Git repository" aria-label="Git repository">
|
|
<i id="git-repository-button" class="fa fa-github"></i>
|
|
</a>
|
|
<a href="https://github.com/element-hq/synapse/edit/develop/docs/usage/configuration/user_authentication/refresh_tokens.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="refresh-tokens"><a class="header" href="#refresh-tokens">Refresh Tokens</a></h1>
|
|
<p>Synapse supports refresh tokens since version 1.49 (some earlier versions had support for an earlier, experimental draft of <a href="https://github.com/matrix-org/matrix-doc/blob/main/proposals/2918-refreshtokens.md#msc2918-refresh-tokens">MSC2918</a> which is not compatible).</p>
|
|
<h2 id="background-and-motivation"><a class="header" href="#background-and-motivation">Background and motivation</a></h2>
|
|
<p>Synapse users' sessions are identified by <strong>access tokens</strong>; access tokens are
|
|
issued to users on login. Each session gets a unique access token which identifies
|
|
it; the access token must be kept secret as it grants access to the user's account.</p>
|
|
<p>Traditionally, these access tokens were eternally valid (at least until the user
|
|
explicitly chose to log out).</p>
|
|
<p>In some cases, it may be desirable for these access tokens to expire so that the
|
|
potential damage caused by leaking an access token is reduced.
|
|
On the other hand, forcing a user to re-authenticate (log in again) often might
|
|
be too much of an inconvenience.</p>
|
|
<p><strong>Refresh tokens</strong> are a mechanism to avoid some of this inconvenience whilst
|
|
still getting most of the benefits of short access token lifetimes.
|
|
Refresh tokens are also a concept present in OAuth 2 — further reading is available
|
|
<a href="https://datatracker.ietf.org/doc/html/rfc6749#section-1.5">here</a>.</p>
|
|
<p>When refresh tokens are in use, both an access token and a refresh token will be
|
|
issued to users on login. The access token will expire after a predetermined amount
|
|
of time, but otherwise works in the same way as before. When the access token is
|
|
close to expiring (or has expired), the user's client should present the homeserver
|
|
(Synapse) with the refresh token.</p>
|
|
<p>The homeserver will then generate a new access token and refresh token for the user
|
|
and return them. The old refresh token is invalidated and can not be used again*.</p>
|
|
<p>Finally, refresh tokens also make it possible for sessions to be logged out if they
|
|
are inactive for too long, before the session naturally ends; see the configuration
|
|
guide below.</p>
|
|
<p>*To prevent issues if clients lose connection half-way through refreshing a token,
|
|
the refresh token is only invalidated once the new access token has been used at
|
|
least once. For all intents and purposes, the above simplification is sufficient.</p>
|
|
<h2 id="caveats"><a class="header" href="#caveats">Caveats</a></h2>
|
|
<p>There are some caveats:</p>
|
|
<ul>
|
|
<li>If a third party gets both your access token and refresh token, they will be able to
|
|
continue to enjoy access to your session.
|
|
<ul>
|
|
<li>This is still an improvement because you (the user) will notice when <em>your</em>
|
|
session expires and you're not able to use your refresh token.
|
|
That would be a giveaway that someone else has compromised your session.
|
|
You would be able to log in again and terminate that session.
|
|
Previously (with long-lived access tokens), a third party that has your access
|
|
token could go undetected for a very long time.</li>
|
|
</ul>
|
|
</li>
|
|
<li>Clients need to implement support for refresh tokens in order for them to be a
|
|
useful mechanism.
|
|
<ul>
|
|
<li>It is up to homeserver administrators if they want to issue long-lived access
|
|
tokens to clients not implementing refresh tokens.
|
|
<ul>
|
|
<li>For compatibility, it is likely that they should, at least until client support
|
|
is widespread.
|
|
<ul>
|
|
<li>Users with clients that support refresh tokens will still benefit from the
|
|
added security; it's not possible to downgrade a session to using long-lived
|
|
access tokens so this effectively gives users the choice.</li>
|
|
</ul>
|
|
</li>
|
|
<li>In a closed environment where all users use known clients, this may not be
|
|
an issue as the homeserver administrator can know if the clients have refresh
|
|
token support. In that case, the non-refreshable access token lifetime
|
|
may be set to a short duration so that a similar level of security is provided.</li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
<h2 id="configuration-guide"><a class="header" href="#configuration-guide">Configuration Guide</a></h2>
|
|
<p>The following configuration options, in the <code>registration</code> section, are related:</p>
|
|
<ul>
|
|
<li><code>session_lifetime</code>: maximum length of a session, even if it's refreshed.
|
|
In other words, the client must log in again after this time period.
|
|
In most cases, this can be unset (infinite) or set to a long time (years or months).</li>
|
|
<li><code>refreshable_access_token_lifetime</code>: lifetime of access tokens that are created
|
|
by clients supporting refresh tokens.
|
|
This should be short; a good value might be 5 minutes (<code>5m</code>).</li>
|
|
<li><code>nonrefreshable_access_token_lifetime</code>: lifetime of access tokens that are created
|
|
by clients which don't support refresh tokens.
|
|
Make this short if you want to effectively force use of refresh tokens.
|
|
Make this long if you don't want to inconvenience users of clients which don't
|
|
support refresh tokens (by forcing them to frequently re-authenticate using
|
|
login credentials).</li>
|
|
<li><code>refresh_token_lifetime</code>: lifetime of refresh tokens.
|
|
In other words, the client must refresh within this time period to maintain its session.
|
|
Unless you want to log inactive sessions out, it is often fine to use a long
|
|
value here or even leave it unset (infinite).
|
|
Beware that making it too short will inconvenience clients that do not connect
|
|
very often, including mobile clients and clients of infrequent users (by making
|
|
it more difficult for them to refresh in time, which may force them to need to
|
|
re-authenticate using login credentials).</li>
|
|
</ul>
|
|
<p><strong>Note:</strong> All four options above only apply when tokens are created (by logging in or refreshing).
|
|
Changes to these settings do not apply retroactively.</p>
|
|
<h3 id="using-refresh-token-expiry-to-log-out-inactive-sessions"><a class="header" href="#using-refresh-token-expiry-to-log-out-inactive-sessions">Using refresh token expiry to log out inactive sessions</a></h3>
|
|
<p>If you'd like to force sessions to be logged out upon inactivity, you can enable
|
|
refreshable access token expiry and refresh token expiry.</p>
|
|
<p>This works because a client must refresh at least once within a period of
|
|
<code>refresh_token_lifetime</code> in order to maintain valid credentials to access the
|
|
account.</p>
|
|
<p>(It's suggested that <code>refresh_token_lifetime</code> should be longer than
|
|
<code>refreshable_access_token_lifetime</code> and this section assumes that to be the case
|
|
for simplicity.)</p>
|
|
<p>Note: this will only affect sessions using refresh tokens. You may wish to
|
|
set a short <code>nonrefreshable_access_token_lifetime</code> to prevent this being bypassed
|
|
by clients that do not support refresh tokens.</p>
|
|
<h4 id="choosing-values-that-guarantee-permitting-some-inactivity"><a class="header" href="#choosing-values-that-guarantee-permitting-some-inactivity">Choosing values that guarantee permitting some inactivity</a></h4>
|
|
<p>It may be desirable to permit some short periods of inactivity, for example to
|
|
accommodate brief outages in client connectivity.</p>
|
|
<p>The following model aims to provide guidance for choosing <code>refresh_token_lifetime</code>
|
|
and <code>refreshable_access_token_lifetime</code> to satisfy requirements of the form:</p>
|
|
<ol>
|
|
<li>inactivity longer than <code>L</code> <strong>MUST</strong> cause the session to be logged out; and</li>
|
|
<li>inactivity shorter than <code>S</code> <strong>MUST NOT</strong> cause the session to be logged out.</li>
|
|
</ol>
|
|
<p>This model makes the weakest assumption that all active clients will refresh as
|
|
needed to maintain an active access token, but no sooner.
|
|
<em>In reality, clients may refresh more often than this model assumes, but the
|
|
above requirements will still hold.</em></p>
|
|
<p>To satisfy the above model,</p>
|
|
<ul>
|
|
<li><code>refresh_token_lifetime</code> should be set to <code>L</code>; and</li>
|
|
<li><code>refreshable_access_token_lifetime</code> should be set to <code>L - S</code>.</li>
|
|
</ul>
|
|
|
|
</main>
|
|
|
|
<nav class="nav-wrapper" aria-label="Page navigation">
|
|
<!-- Mobile navigation buttons -->
|
|
<a rel="prev" href="../../../jwt.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="../../../CAPTCHA_SETUP.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="../../../jwt.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="../../../CAPTCHA_SETUP.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>
|
|
<script type="text/javascript" src="../../../docs/website_files/version-picker.js"></script>
|
|
<script type="text/javascript" src="../../../docs/website_files/version.js"></script>
|
|
</body>
|
|
</html>
|