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| <p class="apache">Apache HTTP Server Version 2.4</p> |
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| <div id="preamble"><h1>Apache Module mod_proxy_http2</h1> |
| <div class="toplang"> |
| <p><span>Available Languages: </span><a href="../en/mod/mod_proxy_http2.html" title="English"> en </a></p> |
| </div> |
| <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>HTTP/2 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_http2_module</td></tr> |
| <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_proxy_http2.c</td></tr></table> |
| <h3>Summary</h3> |
| |
| <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 attemp 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"><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>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__&list_id=144532&product=Apache%20httpd-2&query_format=specific&order=changeddate%20DESC%2Cpriority%2Cbug_severity&component=mod_proxy_http2">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&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> |
| <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="section"> |
| <h2><a name="examples" id="examples">Basic Examples</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><a name="notes" id="notes">Request notes</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"> en </a></p> |
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