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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:01:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:01:30 +0000 |
| commit | 6beeb1b708550be0d4a53b272283e17e5e35fe17 (patch) | |
| tree | 1ce8673d4aaa948e5554000101f46536a1e4cc29 /docs/manual/mod/mod_proxy_http.html.en | |
| parent | Initial commit. (diff) | |
| download | apache2-6beeb1b708550be0d4a53b272283e17e5e35fe17.tar.xz apache2-6beeb1b708550be0d4a53b272283e17e5e35fe17.zip | |
Adding upstream version 2.4.57.upstream/2.4.57
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'docs/manual/mod/mod_proxy_http.html.en')
| -rw-r--r-- | docs/manual/mod/mod_proxy_http.html.en | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/docs/manual/mod/mod_proxy_http.html.en b/docs/manual/mod/mod_proxy_http.html.en new file mode 100644 index 0000000..d9956a4 --- /dev/null +++ b/docs/manual/mod/mod_proxy_http.html.en @@ -0,0 +1,174 @@ +<?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_http - 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="<-" alt="<-" src="../images/left.gif" /></a></div> +<div id="path"> +<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 2.4</a> > <a href="./">Modules</a></div> +<div id="page-content"> +<div id="preamble"><h1>Apache Module mod_proxy_http</h1> +<div class="toplang"> +<p><span>Available Languages: </span><a href="../en/mod/mod_proxy_http.html" title="English"> en </a> | +<a href="../fr/mod/mod_proxy_http.html" hreflang="fr" rel="alternate" title="Français"> fr </a></p> +</div> +<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>HTTP 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_http_module</td></tr> +<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_proxy_http.c</td></tr></table> +<h3>Summary</h3> + + <p>This module <em>requires</em> the service of <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code>. It provides the features used for + proxying HTTP and HTTPS requests. <code class="module"><a href="../mod/mod_proxy_http.html">mod_proxy_http</a></code> + supports HTTP/0.9, HTTP/1.0 and HTTP/1.1. It does <em>not</em> + provide any caching abilities. If you want to set up a caching + proxy, you might want to use the additional service of the + <code class="module"><a href="../mod/mod_cache.html">mod_cache</a></code> module.</p> + + <p>Thus, in order to get the ability of handling HTTP proxy requests, + <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code> and <code class="module"><a href="../mod/mod_proxy_http.html">mod_proxy_http</a></code> + have to be present in the server.</p> + + <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="#env">Environment Variables</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_http">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=mod_proxy_http">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><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="env" id="env">Environment Variables</a></h2> + <p>In addition to the configuration directives that control the + behaviour of <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code>, there are a number of + <dfn>environment variables</dfn> that control the HTTP protocol + provider. Environment variables below that don't specify specific values + are enabled when set to any value.</p> + <dl> + <dt>proxy-sendextracrlf</dt> + <dd>Causes proxy to send an extra CR-LF newline on the end of a + request. This is a workaround for a bug in some browsers.</dd> + <dt>force-proxy-request-1.0</dt> + <dd>Forces the proxy to send requests to the backend as HTTP/1.0 + and disables HTTP/1.1 features.</dd> + <dt>proxy-nokeepalive</dt> + <dd>Forces the proxy to close the backend connection after + each request.</dd> + <dt>proxy-chain-auth</dt> + <dd>If the proxy requires authentication, it will read and + consume the proxy authentication credentials sent by the client. + With <var>proxy-chain-auth</var> it will <em>also</em> forward + the credentials to the next proxy in the chain. This may + be necessary if you have a chain of proxies that share + authentication information. <strong>Security Warning:</strong> + Do not set this unless you know you need it, as it forwards + sensitive information!</dd> + <dt>proxy-sendcl</dt> + <dd>HTTP/1.0 required all HTTP requests that include a body + (e.g. POST requests) to include a <var>Content-Length</var> + header. This environment variable forces the Apache proxy to + send this header to the backend server, regardless of what the + Client sent to the proxy. It ensures compatibility when + proxying for an HTTP/1.0 or unknown backend. However, it + may require the entire request to be buffered by the proxy, + so it becomes very inefficient for large requests.</dd> + <dt>proxy-sendchunks or proxy-sendchunked</dt> + <dd>This is the opposite of <var>proxy-sendcl</var>. It allows + request bodies to be sent to the backend using chunked transfer + encoding. This allows the request to be efficiently streamed, + but requires that the backend server supports HTTP/1.1.</dd> + <dt>proxy-interim-response</dt> + <dd>This variable takes values <code>RFC</code> (the default) or + <code>Suppress</code>. Earlier httpd versions would suppress + HTTP interim (1xx) responses sent from the backend. This is + technically a violation of the HTTP protocol. In practice, + if a backend sends an interim response, it may itself be + extending the protocol in a manner we know nothing about, + or just broken. So this is now configurable: set + <code>proxy-interim-response RFC</code> to be fully protocol + compliant, or <code>proxy-interim-response Suppress</code> + to suppress interim responses.</dd> + <dt>proxy-initial-not-pooled</dt> + <dd>If this variable is set, no pooled connection will be reused + if the client request is the initial request on the frontend connection. This avoids + the "proxy: error reading status line from remote server" error message + caused by the race condition that the backend server closed the + pooled connection after the connection check by the proxy and + before data sent by the proxy reached the backend. It has to be + kept in mind that setting this variable downgrades performance, + especially with HTTP/1.0 clients. + </dd> + </dl> +</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 status received from the backend server.</dd> + </dl> +</div> +</div> +<div class="bottomlang"> +<p><span>Available Languages: </span><a href="../en/mod/mod_proxy_http.html" title="English"> en </a> | +<a href="../fr/mod/mod_proxy_http.html" hreflang="fr" rel="alternate" title="Français"> fr </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&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> +<script type="text/javascript"><!--//--><![CDATA[//><!-- +var comments_shortname = 'httpd'; +var comments_identifier = 'http://httpd.apache.org/docs/2.4/mod/mod_proxy_http.html'; +(function(w, d) { + if (w.location.hostname.toLowerCase() == "httpd.apache.org") { + d.write('<div id="comments_thread"><\/div>'); + var s = d.createElement('script'); + s.type = 'text/javascript'; + s.async = true; + s.src = 'https://comments.apache.org/show_comments.lua?site=' + comments_shortname + '&page=' + comments_identifier; + (d.getElementsByTagName('head')[0] || d.getElementsByTagName('body')[0]).appendChild(s); + } + else { + d.write('<div id="comments_thread">Comments are disabled for this page at the moment.<\/div>'); + } +})(window, document); +//--><!]]></script></div><div id="footer"> +<p class="apache">Copyright 2023 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p> +<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></div><script type="text/javascript"><!--//--><![CDATA[//><!-- +if (typeof(prettyPrint) !== 'undefined') { + prettyPrint(); +} +//--><!]]></script> +</body></html>
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