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Rename

<!DOCTYPE html SYSTEM "about:legacy-compat">
<html lang="en"><head><META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta content="width=device-width, initial-scale=1" name="viewport">

<title>mod_proxy_http2 - 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">
</script>

<p><code class="module"><a href="../mod/mod_proxy_http2.html">mod_proxy_http2</a></code>
    supports HTTP/2 only, it does <em>not</em>
    provide any downgrades to HTTP/1.1. This means that the backend
    needs to support HTTP/2 because HTTP/1.1 will not be used instead.</p>

<p>This module <em>requires</em> the service of <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code>, so in order to get the ability of
    handling HTTP/2 proxy requests,
    <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code> and <code class="module"><a href="../mod/mod_proxy_http2.html">mod_proxy_http2</a></code>
    need to be both loaded by the server.</p>

<p><code class="module"><a href="../mod/mod_proxy_http2.html">mod_proxy_http2</a></code> works with incoming fronted requests
    using HTTP/1.1 or HTTP/2. In both cases, requests proxied
    to the same backend are sent over a single TCP connection
    whenever possible (namely when the connection can be re-used).</p>

<p>Caveat: there will be no attempt to consolidate multiple HTTP/1.1 
    frontend requests (configured to be proxied to the same backend)
    into HTTP/2 streams belonging to the same HTTP/2 request.
    Each HTTP/1.1 frontend request will be proxied to the backend using
    a separate HTTP/2 request (trying to re-use the same TCP connection
    if possible).</p>

<p>This module relies on <a href="http://nghttp2.org/">libnghttp2</a>
    to provide the core http/2 engine.</p>

<div class="warning"><h3>Warning</h3>
       <p>This module is experimental. Its behaviors, directives, and 
       defaults are subject to more change from release to 
       release relative to other standard modules. Users are encouraged to 
       consult the "CHANGES" file for potential updates.</p>
    </div>

<div class="warning"><h3>Warning</h3>
      <p>Do not enable proxying until you have <a href="mod_proxy.html#access">secured your server</a>. Open proxy
      servers are dangerous both to your network and to the Internet at
      large.</p>
    </div>
</div>
<div id="quickview"><h3>Topics</h3>
<ul id="topics">
<li><img alt="" src="../../images/down.gif"> <a href="#examples">Basic Examples</a></li>
<li><img alt="" src="../../images/down.gif"> <a href="#notes">Request notes</a></li>
</ul><h3 class="directives">Directives</h3>
<p>This module provides no
            directives.</p>
<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_http2">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&amp;component=mod_proxy_http2">Report a bug</a></li></ul><h3>See also</h3>
<ul class="seealso">
<li><code class="module"><a href="../mod/mod_http2.html">mod_http2</a></code></li>
<li><code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></li>
<li><code class="module"><a href="../mod/mod_proxy_connect.html">mod_proxy_connect</a></code></li>
</ul></div>
<div class="top"><a href="#page-header"><img alt="top" src="../../images/up.gif"></a></div>
<div class="section">
<h2 id="examples">Basic Examples <a title="Permanent link" href="#examples" class="permalink">&para;</a></h2>

<p>The examples below demonstrate how to configure HTTP/2 for
    backend connections for a reverse proxy. </p>

<div class="example"><h3>HTTP/2 (TLS)</h3><pre class="prettyprint lang-config">ProxyPass "/app" "h2://app.example.com"
ProxyPassReverse "/app" "https://app.example.com"</pre>
</div>

<div class="example"><h3>HTTP/2 (cleartext)</h3><pre class="prettyprint lang-config">ProxyPass "/app" "h2c://app.example.com"
ProxyPassReverse "/app" "http://app.example.com"</pre>
</div>

<div class="note">
      <p>The schemes to configure above in
      <code class="directive">ProxyPassReverse</code> for reverse proxying
      <code>h2</code> (or <code>h2c</code>) protocols are the usual
      <code>https</code> (resp. <code>http</code>) as expected/used by
      the user agent.</p>
    </div>
    </div><div class="top"><a href="#page-header"><img alt="top" src="../../images/up.gif"></a></div>
<div class="section">
<h2 id="notes">Request notes <a title="Permanent link" href="#notes" class="permalink">&para;</a></h2>
    <p><code class="module"><a href="../mod/mod_proxy_http.html">mod_proxy_http</a></code> creates the following request notes for
        logging using the <code>%{VARNAME}n</code> format in
        <code class="directive"><a href="../mod/mod_log_config.html#logformat">LogFormat</a></code> or
        <code class="directive"><a href="../mod/core.html#errorlogformat">ErrorLogFormat</a></code>:
    </p>
    <dl>
        <dt>proxy-source-port</dt>
        <dd>The local port used for the connection to the backend server.</dd>
        <dt>proxy-status</dt>
        <dd>The HTTP/2 status received from the backend server.</dd>
    </dl>
</div>
</div>
<div class="bottomlang">
<p><span>Available Languages: </span><a href="../../en/mod/mod_proxy_http2.html" title="English">&nbsp;en&nbsp;</a> |
<a href="../../fr/mod/mod_proxy_http2.html" hreflang="fr" rel="alternate" title="Fran&ccedil;ais">&nbsp;fr&nbsp;</a></p>
</div><div id="footer">
<p class="apache">Copyright 2026 The Apache Software Foundation.<br>Licensed under the <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
<p class="menu"><a href="../mod/index.html">Modules</a> | <a href="../mod/quickreference.html">Directives</a> | <a href="https://cwiki.apache.org/confluence/display/httpd/FAQ">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a> | <a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2">Report a bug</a></p></div><script><![CDATA[//><!]]></script>
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