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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 06:33:50 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 06:33:50 +0000 |
| commit | fe39ffb8b90ae4e002ed73fe98617cd590abb467 (patch) | |
| tree | b80e5956907d8aeaaffe4e4f0c068c0e6157ce8b /docs/manual/mod/mod_proxy_scgi.html.en | |
| parent | Initial commit. (diff) | |
| download | apache2-fe39ffb8b90ae4e002ed73fe98617cd590abb467.tar.xz apache2-fe39ffb8b90ae4e002ed73fe98617cd590abb467.zip | |
Adding upstream version 2.4.56.upstream/2.4.56
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'docs/manual/mod/mod_proxy_scgi.html.en')
| -rw-r--r-- | docs/manual/mod/mod_proxy_scgi.html.en | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/docs/manual/mod/mod_proxy_scgi.html.en b/docs/manual/mod/mod_proxy_scgi.html.en new file mode 100644 index 0000000..ff4d0f8 --- /dev/null +++ b/docs/manual/mod/mod_proxy_scgi.html.en @@ -0,0 +1,213 @@ +<?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_scgi - 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_scgi</h1> +<div class="toplang"> +<p><span>Available Languages: </span><a href="../en/mod/mod_proxy_scgi.html" title="English"> en </a> | +<a href="../fr/mod/mod_proxy_scgi.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>SCGI gateway 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_scgi_module</td></tr> +<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_proxy_scgi.c</td></tr> +<tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available in version 2.2.14 and later</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 support for the + <a href="http://python.ca/scgi/protocol.txt">SCGI protocol, version + 1</a>.</p> + + <p>Thus, in order to get the ability of handling the SCGI protocol, + <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code> and <code class="module"><a href="../mod/mod_proxy_scgi.html">mod_proxy_scgi</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="#examples">Examples</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#env">Environment Variables</a></li> +</ul><h3 class="directives">Directives</h3> +<ul id="toc"> +<li><img alt="" src="../images/down.gif" /> <a href="#proxyscgiinternalredirect">ProxySCGIInternalRedirect</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#proxyscgisendfile">ProxySCGISendfile</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__&list_id=144532&product=Apache%20httpd-2&query_format=specific&order=changeddate%20DESC%2Cpriority%2Cbug_severity&component=mod_proxy_scgi">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=mod_proxy_scgi">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_balancer.html">mod_proxy_balancer</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">Examples</a></h2> + <p>Remember, in order to make the following examples work, you have to + enable <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code> and <code class="module"><a href="../mod/mod_proxy_scgi.html">mod_proxy_scgi</a></code>.</p> + + <div class="example"><h3>Simple gateway</h3><pre class="prettyprint lang-config">ProxyPass "/scgi-bin/" "scgi://localhost:4000/"</pre> +</div> + + <p>The balanced gateway needs <code class="module"><a href="../mod/mod_proxy_balancer.html">mod_proxy_balancer</a></code> and + at least one load balancer algorithm module, such as + <code class="module"><a href="../mod/mod_lbmethod_byrequests.html">mod_lbmethod_byrequests</a></code>, in addition to the proxy + modules listed above. <code class="module"><a href="../mod/mod_lbmethod_byrequests.html">mod_lbmethod_byrequests</a></code> is the + default, and will be used for this example configuration.</p> + + <div class="example"><h3>Balanced gateway</h3><pre class="prettyprint lang-config">ProxyPass "/scgi-bin/" "balancer://somecluster/" +<Proxy "balancer://somecluster"> + BalancerMember "scgi://localhost:4000" + BalancerMember "scgi://localhost:4001" +</Proxy></pre> +</div> +</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>, an <dfn>environment + variable</dfn> may also control the SCGI protocol + provider:</p> + <dl> + <dt>proxy-scgi-pathinfo</dt> + <dd>By default <code class="module"><a href="../mod/mod_proxy_scgi.html">mod_proxy_scgi</a></code> will neither create + nor export the <var>PATH_INFO</var> environment variable. This allows + the backend SCGI server to correctly determine <var>SCRIPT_NAME</var> + and <var>Script-URI</var> and be compliant with RFC 3875 section 3.3. + If instead you need <code class="module"><a href="../mod/mod_proxy_scgi.html">mod_proxy_scgi</a></code> to generate + a "best guess" for <var>PATH_INFO</var>, set this env-var. The + variable must be set before <code class="directive"><a href="../mod/mod_env.html#setenv">SetEnv</a></code> + is effective. <code class="directive"><a href="../mod/mod_setenvif.html#setenvif">SetEnvIf</a></code> can be + used instead: <code>SetEnvIf Request_URI . proxy-scgi-pathinfo</code> + </dd> + </dl> +</div> +<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="directive-section"><h2><a name="ProxySCGIInternalRedirect" id="ProxySCGIInternalRedirect">ProxySCGIInternalRedirect</a> <a name="proxyscgiinternalredirect" id="proxyscgiinternalredirect">Directive</a></h2> +<table class="directive"> +<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Enable or disable internal redirect responses from the +backend</td></tr> +<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>ProxySCGIInternalRedirect On|Off|<var>Headername</var></code></td></tr> +<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>ProxySCGIInternalRedirect On</code></td></tr> +<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory</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_scgi</td></tr> +<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>The <var>Headername</var> feature is available in version +2.4.13 and later</td></tr> +</table> + <p>The <code class="directive">ProxySCGIInternalRedirect</code> enables the backend + to internally redirect the gateway to a different URL. This feature + originates in <code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code>, which internally redirects the + response if the response status is <code>OK</code> (<code>200</code>) and + the response contains a <code>Location</code> (or configured alternate + header) and its value starts with a slash (<code>/</code>). This value is + interpreted as a new local URL that Apache httpd internally redirects to.</p> + + <p><code class="module"><a href="../mod/mod_proxy_scgi.html">mod_proxy_scgi</a></code> does the same as + <code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code> in this regard, except that you can turn off the + feature or specify the use of a header other than <code>Location</code>.</p> + + <div class="example"><h3>Example</h3><pre class="prettyprint lang-config"> ProxySCGIInternalRedirect Off + +# Django and some other frameworks will fully qualify "local URLs" +# set by the application, so an alternate header must be used. +<Location /django-app/> + ProxySCGIInternalRedirect X-Location +</Location></pre> +</div> + +</div> +<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="directive-section"><h2><a name="ProxySCGISendfile" id="ProxySCGISendfile">ProxySCGISendfile</a> <a name="proxyscgisendfile" id="proxyscgisendfile">Directive</a></h2> +<table class="directive"> +<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Enable evaluation of <var>X-Sendfile</var> pseudo response +header</td></tr> +<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>ProxySCGISendfile On|Off|<var>Headername</var></code></td></tr> +<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>ProxySCGISendfile Off</code></td></tr> +<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory</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_scgi</td></tr> +</table> + <p>The <code class="directive">ProxySCGISendfile</code> directive enables the + SCGI backend to let files be served directly by the gateway. This is useful + for performance purposes — httpd can use <code>sendfile</code> or other + optimizations, which are not possible if the file comes over the backend + socket. Additionally, the file contents are not transmitted twice.</p> + <p>The <code class="directive">ProxySCGISendfile</code> argument determines the + gateway behaviour:</p> + <dl> + <dt><code>Off</code></dt> + <dd>No special handling takes place.</dd> + + <dt><code>On</code></dt> + <dd>The gateway looks for a backend response header called + <code>X-Sendfile</code> and interprets the value as the filename to serve. + The header is removed from the final response headers. This is equivalent to + <code>ProxySCGISendfile X-Sendfile</code>.</dd> + + <dt>anything else</dt> + <dd>Similar to <code>On</code>, but instead of the hardcoded header name + <code>X-Sendfile</code>, the argument is used as the header name.</dd> + </dl> + + <div class="example"><h3>Example</h3><pre class="prettyprint lang-config"># Use the default header (X-Sendfile) +ProxySCGISendfile On + +# Use a different header +ProxySCGISendfile X-Send-Static</pre> +</div> + +</div> +</div> +<div class="bottomlang"> +<p><span>Available Languages: </span><a href="../en/mod/mod_proxy_scgi.html" title="English"> en </a> | +<a href="../fr/mod/mod_proxy_scgi.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_scgi.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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