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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:01:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:01:30 +0000
commit6beeb1b708550be0d4a53b272283e17e5e35fe17 (patch)
tree1ce8673d4aaa948e5554000101f46536a1e4cc29 /docs/manual/mod/mod_reqtimeout.html.en
parentInitial commit. (diff)
downloadapache2-6beeb1b708550be0d4a53b272283e17e5e35fe17.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>
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+<?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" />
+<!--
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+<title>mod_reqtimeout - Apache HTTP Server Version 2.4</title>
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+<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="&lt;-" alt="&lt;-" src="../images/left.gif" /></a></div>
+<div id="path">
+<a href="http://www.apache.org/">Apache</a> &gt; <a href="http://httpd.apache.org/">HTTP Server</a> &gt; <a href="http://httpd.apache.org/docs/">Documentation</a> &gt; <a href="../">Version 2.4</a> &gt; <a href="./">Modules</a></div>
+<div id="page-content">
+<div id="preamble"><h1>Apache Module mod_reqtimeout</h1>
+<div class="toplang">
+<p><span>Available Languages: </span><a href="../en/mod/mod_reqtimeout.html" title="English">&nbsp;en&nbsp;</a> |
+<a href="../fr/mod/mod_reqtimeout.html" hreflang="fr" rel="alternate" title="Français">&nbsp;fr&nbsp;</a></p>
+</div>
+<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Set timeout and minimum data rate for receiving requests
+</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>reqtimeout_module</td></tr>
+<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_reqtimeout.c</td></tr>
+<tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available in Apache HTTPD 2.2.15 and later</td></tr></table>
+<h3>Summary</h3>
+
+ <p>This module provides a convenient way to set timeouts and minimum data
+ rates for receiving requests. Should a timeout occur or a data rate be
+ to low, the corresponding connection will be closed by the server.</p>
+
+ <p>This is logged at <code class="directive"><a href="../mod/core.html#loglevel">LogLevel</a></code>
+ <code>info</code>.</p>
+
+ <p>If needed, the <code class="directive"><a href="../mod/core.html#loglevel">LogLevel</a></code> directive
+ can be tweaked to explicitly log it:</p>
+ <pre class="prettyprint lang-config">LogLevel reqtimeout:info</pre>
+
+</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>
+</ul><h3 class="directives">Directives</h3>
+<ul id="toc">
+<li><img alt="" src="../images/down.gif" /> <a href="#requestreadtimeout">RequestReadTimeout</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__&amp;list_id=144532&amp;product=Apache%20httpd-2&amp;query_format=specific&amp;order=changeddate%20DESC%2Cpriority%2Cbug_severity&amp;component=mod_reqtimeout">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&amp;component=mod_reqtimeout">Report a bug</a></li></ul><h3>See also</h3>
+<ul class="seealso">
+<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>
+
+ <ol>
+ <li>
+ Allow for 5 seconds to complete the TLS handshake, 10 seconds to
+ receive the request headers and 30 seconds for receiving the
+ request body:
+
+ <pre class="prettyprint lang-config">RequestReadTimeout handshake=5 header=10 body=30</pre>
+
+ </li>
+
+ <li>
+ Allow at least 10 seconds to receive the request body.
+ If the client sends data, increase the timeout by 1 second for every
+ 1000 bytes received, with no upper limit for the timeout (except for
+ the limit given indirectly by
+ <code class="directive"><a href="../mod/core.html#limitrequestbody">LimitRequestBody</a></code>):
+
+ <pre class="prettyprint lang-config">RequestReadTimeout body=10,MinRate=1000</pre>
+
+ </li>
+
+ <li>
+ Allow at least 10 seconds to receive the request headers.
+ If the client sends data, increase the timeout by 1 second for every
+ 500 bytes received. But do not allow more than 30 seconds for the
+ request headers:
+
+ <pre class="prettyprint lang-config">RequestReadTimeout header=10-30,MinRate=500</pre>
+
+ </li>
+
+ <li>
+ Usually, a server should have both header and body timeouts configured.
+ If a common configuration is used for http and https virtual hosts, the
+ timeouts should not be set too low:
+
+ <pre class="prettyprint lang-config">RequestReadTimeout header=20-40,MinRate=500 body=20,MinRate=500</pre>
+
+ </li>
+
+ </ol>
+</div>
+<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
+<div class="directive-section"><h2><a name="RequestReadTimeout" id="RequestReadTimeout">RequestReadTimeout</a> <a name="requestreadtimeout" id="requestreadtimeout">Directive</a></h2>
+<table class="directive">
+<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Set timeout values for completing the TLS handshake, receiving
+the request headers and/or body from client.
+</td></tr>
+<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>RequestReadTimeout
+[handshake=<var>timeout</var>[-<var>maxtimeout</var>][,MinRate=<var>rate</var>]
+[header=<var>timeout</var>[-<var>maxtimeout</var>][,MinRate=<var>rate</var>]
+[body=<var>timeout</var>[-<var>maxtimeout</var>][,MinRate=<var>rate</var>]
+</code></td></tr>
+<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>RequestReadTimeout handshake=0 header=20-40,MinRate=500 body=20,MinRate=500</code></td></tr>
+<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</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_reqtimeout</td></tr>
+<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Available in version 2.2.15 and later; defaulted to disabled in
+version 2.3.14 and earlier. The <code>handshake</code> stage is available since
+version 2.4.39.
+</td></tr>
+</table>
+ <p>This directive can set various timeouts for completing the TLS handshake,
+ receiving the request headers and/or the request body from the client.
+ If the client fails to complete each of these stages within the configured
+ time, a <code>408 REQUEST TIME OUT</code> error is sent.</p>
+
+ <p>For SSL virtual hosts, the <code>handshake</code> timeout values is the time
+ needed to do the initial SSL handshake. If the user's browser is configured to
+ query certificate revocation lists and the CRL server is not reachable, the
+ initial SSL handshake may take a significant time until the browser gives up
+ waiting for the CRL. Therefore the <code>handshake</code> timeout should take
+ this possible overhead into consideration for SSL virtual hosts (if necessary).
+ The body timeout values include the time needed for SSL renegotiation
+ (if necessary).</p>
+
+ <p>When an <code class="directive"><a href="../mod/core.html#acceptfilter">AcceptFilter</a></code> is in use
+ (usually the case on Linux and FreeBSD), the socket is not sent to the
+ server process before at least one byte (or the whole request for
+ <code>httpready</code>) is received. The handshake and header timeouts
+ configured with <code class="directive">RequestReadTimeout</code> are only effective
+ after the server process has received the socket.</p>
+
+ <p>For each of the three timeout stages (handshake, header or body), there are
+ three ways to specify the timeout:
+ </p>
+
+ <ul>
+
+ <li><strong>Fixed timeout value</strong>:<br />
+
+ <div class="example"><p><code><var>stage</var>=<var>timeout</var></code></p></div>
+
+ <p>The time in seconds allowed for completing the whole stage (handshaking,
+ reading all of the request headers or body). A value of 0 means no limit.</p>
+ </li>
+
+ <li><strong>Disable module for a vhost</strong>:<br />
+
+ <div class="example"><p><code>handshake=0 header=0 body=0</code></p></div>
+
+ <p>This disables <code class="module"><a href="../mod/mod_reqtimeout.html">mod_reqtimeout</a></code> completely (note that
+ <code>handshake=0</code> is the default already and could be omitted).</p>
+ </li>
+
+ <li><strong>Timeout value that is increased when data is
+ received</strong>:<br />
+ <div class="example"><p><code>
+ <var>stage</var>=<var>timeout</var>,MinRate=<var>data_rate</var>
+ </code></p></div>
+
+ <p>Same as above, but whenever data is received, the timeout value is
+ increased according to the specified minimum data rate (in bytes per
+ second).</p>
+ </li>
+
+ <li><strong>Timeout value that is increased when data is received, with an
+ upper bound</strong>:<br />
+ <div class="example"><p><code>
+ <var>stage</var>=<var>timeout</var>-<var>maxtimeout</var>,MinRate=<var>data_rate</var>
+ </code></p></div>
+
+ <p>Same as above, but the timeout will not be increased above the second
+ value of the specified timeout range.</p>
+ </li>
+
+ </ul>
+
+
+</div>
+</div>
+<div class="bottomlang">
+<p><span>Available Languages: </span><a href="../en/mod/mod_reqtimeout.html" title="English">&nbsp;en&nbsp;</a> |
+<a href="../fr/mod/mod_reqtimeout.html" hreflang="fr" rel="alternate" title="Français">&nbsp;fr&nbsp;</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&amp;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>
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