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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 06:33:50 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 06:33:50 +0000
commitfe39ffb8b90ae4e002ed73fe98617cd590abb467 (patch)
treeb80e5956907d8aeaaffe4e4f0c068c0e6157ce8b /docs/manual/mod/mod_proxy_wstunnel.html.en
parentInitial commit. (diff)
downloadapache2-fe39ffb8b90ae4e002ed73fe98617cd590abb467.tar.xz
apache2-fe39ffb8b90ae4e002ed73fe98617cd590abb467.zip
Adding upstream version 2.4.56.upstream/2.4.56upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head>
+<meta content="text/html; charset=UTF-8" http-equiv="Content-Type" />
+<!--
+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
+ This file is generated from xml source: DO NOT EDIT
+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
+ -->
+<title>mod_proxy_wstunnel - Apache HTTP Server Version 2.4</title>
+<link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" />
+<link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" />
+<link href="../style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" /><link rel="stylesheet" type="text/css" href="../style/css/prettify.css" />
+<script src="../style/scripts/prettify.min.js" type="text/javascript">
+</script>
+
+<link href="../images/favicon.ico" rel="shortcut icon" /></head>
+<body>
+<div id="page-header">
+<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p>
+<p class="apache">Apache HTTP Server Version 2.4</p>
+<img alt="" src="../images/feather.png" /></div>
+<div class="up"><a href="./"><img title="&lt;-" alt="&lt;-" src="../images/left.gif" /></a></div>
+<div id="path">
+<a href="http://www.apache.org/">Apache</a> &gt; <a href="http://httpd.apache.org/">HTTP Server</a> &gt; <a href="http://httpd.apache.org/docs/">Documentation</a> &gt; <a href="../">Version 2.4</a> &gt; <a href="./">Modules</a></div>
+<div id="page-content">
+<div id="preamble"><h1>Apache Module mod_proxy_wstunnel</h1>
+<div class="toplang">
+<p><span>Available Languages: </span><a href="../en/mod/mod_proxy_wstunnel.html" title="English">&nbsp;en&nbsp;</a> |
+<a href="../fr/mod/mod_proxy_wstunnel.html" hreflang="fr" rel="alternate" title="Français">&nbsp;fr&nbsp;</a></p>
+</div>
+<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Websockets support module for
+<code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></td></tr>
+<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr>
+<tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>proxy_wstunnel_module</td></tr>
+<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_proxy_wstunnel.c</td></tr>
+<tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available in httpd 2.4.5 and later</td></tr></table>
+<h3>Summary</h3>
+
+ <div class="warning"><h3><a id="deprecation" name="deprecation">Deprecation</a></h3>
+ <p>Since Apache HTTP Server 2.4.47, protocol Upgrade (tunneling) can be better handled by
+ <code class="module"><a href="../mod/mod_proxy_http.html">mod_proxy_http</a></code>.</p>
+ <p>See <a href="mod_proxy.html#protoupgrade">Protocol Upgrade</a>.</p>
+ </div>
+
+ <p>This module <em>requires</em> the service of <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code>.
+ It provides support for the tunnelling of web
+ socket connections to a backend websockets server. The connection
+ is automatically upgraded to a websocket connection:</p>
+
+ <div class="example"><h3>HTTP Response</h3><pre class="prettyprint lang-config">Upgrade: WebSocket
+Connection: Upgrade</pre>
+</div>
+
+<p>Proxying requests to a websockets server like <code>echo.websocket.org</code> can be done using the
+<code class="directive"><a href="../mod/mod_proxy.html#proxypass">ProxyPass</a></code> directive:</p>
+ <pre class="prettyprint lang-config">ProxyPass "/ws2/" "ws://echo.websocket.org/"
+ProxyPass "/wss2/" "wss://echo.websocket.org/"</pre>
+
+
+ <p>Proxying both HTTP and websockets at the same time, with a specific set of URL's being
+websocket-only, can be done by specifying the websockets
+<code class="directive"><a href="../mod/mod_proxy.html#proxypass">ProxyPass</a></code> directive before the
+HTTP directive:</p>
+<pre class="prettyprint lang-config">ProxyPassMatch ^/(myApp/ws)$ ws://backend.example.com:9080/$1
+ProxyPass / http://backend.example.com:9080/</pre>
+
+
+<p>Proxying both HTTP and websockets at the same time, where the websockets URL's are not
+websocket-only or not known in advance can be done by using the
+<code class="directive"><a href="../mod/mod_rewrite.html#rewriterule">RewriteRule</a></code> directive to
+configure the websockets proxying:</p>
+<pre class="prettyprint lang-config">ProxyPass / http://example.com:9080/
+RewriteEngine on
+RewriteCond %{HTTP:Upgrade} websocket [NC]
+RewriteCond %{HTTP:Connection} upgrade [NC]
+RewriteRule ^/?(.*) "ws://example.com:9080/$1" [P,L]</pre>
+
+
+
+<p>Load balancing for multiple backends can be achieved using <code class="module"><a href="../mod/mod_proxy_balancer.html">mod_proxy_balancer</a></code>.</p>
+
+<p>
+The module can also be used to upgrade to other protocols than WebSocket, by setting
+the <var><a href="mod_proxy.html#upgrade">upgrade</a></var> parameter in the
+<code class="directive"><a href="../mod/mod_proxy.html#proxypass">ProxyPass</a></code>
+directive to some custom protocol name.
+Special <code>upgrade=NONE</code> and <code>upgrade=ANY</code> values may be used for
+testing/forcing the upgrade but they are <strong>not recommended</strong> in production for
+security reasons.
+<code>NONE</code> means that the check for the header is omitted but still the upgrade/tunneling to
+WebSocket always happens.
+<code>ANY</code> means that the upgrade/tunneling will happen using any protocol asked by the client.
+</p>
+</div>
+<div id="quickview"><a href="https://www.apache.org/foundation/contributing.html" class="badge"><img src="https://www.apache.org/images/SupportApache-small.png" alt="Support Apache!" /></a><h3 class="directives">Directives</h3>
+<ul id="toc">
+<li><img alt="" src="../images/down.gif" /> <a href="#proxywebsocketfallbacktoproxyhttp">ProxyWebsocketFallbackToProxyHttp</a></li>
+</ul>
+<h3>Bugfix checklist</h3><ul class="seealso"><li><a href="https://www.apache.org/dist/httpd/CHANGES_2.4">httpd changelog</a></li><li><a href="https://bz.apache.org/bugzilla/buglist.cgi?bug_status=__open__&amp;list_id=144532&amp;product=Apache%20httpd-2&amp;query_format=specific&amp;order=changeddate%20DESC%2Cpriority%2Cbug_severity&amp;component=mod_proxy_wstunnel">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&amp;component=mod_proxy_wstunnel">Report a bug</a></li></ul><h3>See also</h3>
+<ul class="seealso">
+<li><code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></li>
+<li><a href="#comments_section">Comments</a></li></ul></div>
+
+<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
+<div class="directive-section"><h2><a name="ProxyWebsocketFallbackToProxyHttp" id="ProxyWebsocketFallbackToProxyHttp">ProxyWebsocketFallbackToProxyHttp</a> <a name="proxywebsocketfallbacktoproxyhttp" id="proxywebsocketfallbacktoproxyhttp">Directive</a></h2>
+<table class="directive">
+<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Instructs this module to let <code class="module"><a href="../mod/mod_proxy_http.html">mod_proxy_http</a></code> handle the request</td></tr>
+<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>ProxyWebsocketFallbackToProxyHttp On|Off</code></td></tr>
+<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>ProxyWebsocketFallbackToProxyHttp On</code></td></tr>
+<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr>
+<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
+<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_proxy_wstunnel</td></tr>
+<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Available in httpd 2.4.48 and later</td></tr>
+</table>
+ <p>Since httpd 2.4.47, <code class="module"><a href="../mod/mod_proxy_http.html">mod_proxy_http</a></code> can handle WebSocket
+ upgrading and tunneling in accordance to RFC 7230, this directive controls
+ whether <code class="module"><a href="../mod/mod_proxy_wstunnel.html">mod_proxy_wstunnel</a></code> should hand over to
+ <code class="module"><a href="../mod/mod_proxy_http.html">mod_proxy_http</a></code> to this, which is the case by default.</p>
+ <p>Setting to <em>Off</em> lets <code class="module"><a href="../mod/mod_proxy_wstunnel.html">mod_proxy_wstunnel</a></code> handle
+ WebSocket requests as in httpd 2.4.46 and earlier.</p>
+
+</div>
+</div>
+<div class="bottomlang">
+<p><span>Available Languages: </span><a href="../en/mod/mod_proxy_wstunnel.html" title="English">&nbsp;en&nbsp;</a> |
+<a href="../fr/mod/mod_proxy_wstunnel.html" hreflang="fr" rel="alternate" title="Français">&nbsp;fr&nbsp;</a></p>
+</div><div class="top"><a href="#page-header"><img src="../images/up.gif" alt="top" /></a></div><div class="section"><h2><a id="comments_section" name="comments_section">Comments</a></h2><div class="warning"><strong>Notice:</strong><br />This is not a Q&amp;A section. Comments placed here should be pointed towards suggestions on improving the documentation or server, and may be removed by our moderators if they are either implemented or considered invalid/off-topic. Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Libera.chat, or sent to our <a href="https://httpd.apache.org/lists.html">mailing lists</a>.</div>
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