github.com/krum110487/go-htaccess@v0.0.0-20240316004156-60641c8e7598/tests/data/apache_2_2_34/manual/rewrite/proxy.html.en (about) 1 <?xml version="1.0" encoding="ISO-8859-1"?> 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 3 <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head> 4 <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type" /> 5 <!-- 6 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 7 This file is generated from xml source: DO NOT EDIT 8 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 9 --> 10 <title>Using mod_rewrite for Proxying - Apache HTTP Server Version 2.2</title> 11 <link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" /> 12 <link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" /> 13 <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" /> 14 <script src="../style/scripts/prettify.min.js" type="text/javascript"> 15 </script> 16 17 <link href="../images/favicon.ico" rel="shortcut icon" /><link href="http://httpd.apache.org/docs/current/rewrite/proxy.html" rel="canonical" /></head> 18 <body id="manual-page"><div id="page-header"> 19 <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> 20 <p class="apache">Apache HTTP Server Version 2.2</p> 21 <img alt="" src="../images/feather.gif" /></div> 22 <div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div> 23 <div id="path"> 24 <a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="../">Version 2.2</a> > <a href="./">Rewrite</a></div><div id="page-content"><div class="retired"><h4>Please note</h4> 25 <p> This document refers to a legacy release (<strong>2.2</strong>) of Apache httpd. The active release (<strong>2.4</strong>) is documented <a href="http://httpd.apache.org/docs/current">here</a>. If you have not already upgraded, please follow <a href="http://httpd.apache.org/docs/current/upgrading.html">this link</a> for more information.</p> 26 <p>You may follow <a href="http://httpd.apache.org/docs/current/rewrite/proxy.html">this link</a> to go to the current version of this document.</p></div><div id="preamble"><h1>Using mod_rewrite for Proxying</h1> 27 <div class="toplang"> 28 <p><span>Available Languages: </span><a href="../en/rewrite/proxy.html" title="English"> en </a></p> 29 </div> 30 31 32 <p>This document supplements the <code class="module"><a href="../mod/mod_rewrite.html">mod_rewrite</a></code> 33 <a href="../mod/mod_rewrite.html">reference documentation</a>. It describes 34 how to use the RewriteRule's [P] flag to proxy content to another server. 35 A number of recipes are provided that describe common scenarios.</p> 36 37 </div> 38 <div id="quickview"><h3>See also</h3><ul class="seealso"><li><a href="../mod/mod_rewrite.html">Module documentation</a></li><li><a href="intro.html">mod_rewrite introduction</a></li><li><a href="remapping.html">Redirection and remapping</a></li><li><a href="access.html">Controlling access</a></li><li><a href="vhosts.html">Virtual hosts</a></li><li><a href="rewritemap.html">Using RewriteMap</a></li><li><a href="advanced.html">Advanced techniques and tricks</a></li><li><a href="avoid.html">When not to use mod_rewrite</a></li></ul><ul class="seealso"><li><a href="#comments_section">Comments</a></li></ul></div> 39 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> 40 <div class="section"> 41 <h2><a name="dynamic-proxy" id="dynamic-proxy">Proxying Content with mod_rewrite</a></h2> 42 43 44 45 <dl> 46 <dt>Description:</dt> 47 48 <dd> 49 <p> 50 mod_rewrite provides the [P] flag, which allows URLs to be passed, 51 via mod_proxy, to another server. Two examples are given here. In 52 one example, a URL is passed directly to another server, and served 53 as though it were a local URL. In the other example, we proxy 54 missing content to a back-end server.</p> 55 </dd> 56 57 <dt>Solution:</dt> 58 59 <dd> 60 <p>To simply map a URL to another server, we use the [P] flag, as 61 follows:</p> 62 63 <div class="example"><p><code> 64 RewriteEngine on<br /> 65 RewriteBase /products/<br /> 66 RewriteRule ^<strong>widget/</strong>(.*)$ <strong>http://product.example.com/widget/</strong>$1 [<strong>P</strong>]<br /> 67 ProxyPassReverse /products/widget/ http://product.example.com/widget/ 68 </code></p></div> 69 70 <p>In the second example, we proxy the request only if we can't find 71 the resource locally. This can be very useful when you're migrating 72 from one server to another, and you're not sure if all the content 73 has been migrated yet.</p> 74 75 <div class="example"><p><code> 76 RewriteCond %{REQUEST_FILENAME} <strong>!-f</strong><br /> 77 RewriteCond %{REQUEST_FILENAME} <strong>!-d</strong><br /> 78 RewriteRule ^/(.*) http://<strong>old</strong>.example.com/$1 [<strong>P</strong>]<br /> 79 ProxyPassReverse / http://old.example.com/ 80 </code></p></div> 81 </dd> 82 83 <dt>Discussion:</dt> 84 85 <dd><p>In each case, we add a <code class="directive"><a href="../mod/mod_proxy.html#proxypassreverse">ProxyPassReverse</a></code> directive to ensure 86 that any redirects issued by the backend are correctly passed on to 87 the client.</p> 88 89 <p>Consider using either <code class="directive"><a href="../mod/mod_proxy.html#proxypass">ProxyPass</a></code> or <code class="directive"><a href="../mod/mod_proxy.html#proxypassmatch">ProxyPassMatch</a></code> whenever possible in 90 preference to mod_rewrite.</p> 91 </dd> 92 </dl> 93 94 </div></div> 95 <div class="bottomlang"> 96 <p><span>Available Languages: </span><a href="../en/rewrite/proxy.html" title="English"> en </a></p> 97 </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&A section. 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