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25 <div id="preamble"><h1>Apache Module mod_reqtimeout</h1>
27 <p><span>Available Languages: </span><a href="../en/mod/mod_reqtimeout.html" title="English"> en </a></p>
29 <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Set timeout and minimum data rate for receiving requests
31 <tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr>
32 <tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>reqtimeout_module</td></tr>
33 <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_reqtimeout.c</td></tr></table>
35 <div id="quickview"><h3 class="directives">Directives</h3>
37 <li><img alt="" src="../images/down.gif" /> <a href="#requestreadtimeout">RequestReadTimeout</a></li>
41 <li><img alt="" src="../images/down.gif" /> <a href="#examples">Examples</a></li>
42 </ul><ul class="seealso"><li><a href="#comments_section">Comments</a></li></ul></div>
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44 <div class="directive-section"><h2><a name="RequestReadTimeout" id="RequestReadTimeout">RequestReadTimeout</a> <a name="requestreadtimeout" id="requestreadtimeout">Directive</a></h2>
45 <table class="directive">
46 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Set timeout values for receiving request headers and body from client.
48 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>RequestReadTimeout
49 [header=<var>timeout</var>[-<var>maxtimeout</var>][,MinRate=<var>rate</var>]
50 [body=<var>timeout</var>[-<var>maxtimeout</var>][,MinRate=<var>rate</var>]
52 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>header=20-40,MinRate=500 body=20,MinRate=500</code></td></tr>
53 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr>
54 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
55 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_reqtimeout</td></tr>
56 <tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Defaulted to disabled in
57 version 2.3.14 and earlier.</td></tr>
59 <p>This directive can set various timeouts for receiving the request headers
60 and the request body from the client. If the client fails to send headers or
61 body within the configured time, a <code>408 REQUEST TIME OUT</code> error
64 <p>For SSL virtual hosts, the header timeout values include the time needed
65 to do the initial SSL handshake. If the user's browser is configured to
66 query certificate revocation lists and the CRL server is not reachable, the
67 initial SSL handshake may take a significant time until the browser gives up
68 waiting for the CRL. Therefore the header timeout values should not be set
69 to very low values for SSL virtual hosts.
70 The body timeout values include the time needed for SSL renegotiation
73 <p>When an <code class="directive"><a href="../mod/core.html#acceptfilter">AcceptFilter</a></code> is in use
74 (usually the case on Linux and FreeBSD), the socket is not sent to the
75 server process before at least one byte (or the whole request for
76 <code>httpready</code>) is received. The header timeout configured with
77 <code>RequestReadTimeout</code> is only effective after the server process has
78 received the socket.</p>
80 <p>For each of the two timeout types (header or body), there are three ways
81 to specify the timeout:
86 <li><strong>Fixed timeout value</strong>:<br />
88 <div class="example"><p><code><var>type</var>=<var>timeout</var></code></p></div>
90 <p>The time in seconds allowed for reading all of the request headers or
91 body, respectively. A value of 0 means no limit.</p>
94 <li><strong>Disable module for a vhost:</strong>:<br />
96 <div class="example"><p><code>header=0 body=0</code></p></div>
98 <p>This disables <code class="module"><a href="../mod/mod_reqtimeout.html">mod_reqtimeout</a></code> completely.</p>
101 <li><strong>Timeout value that is increased when data is
102 received</strong>:<br />
103 <div class="example"><p><code>
104 <var>type</var>=<var>timeout</var>,MinRate=<var>data_rate</var>
107 <p>Same as above, but whenever data is received, the timeout value is
108 increased according to the specified minimum data rate (in bytes per
112 <li><strong>Timeout value that is increased when data is received, with an
113 upper bound</strong>:<br />
114 <div class="example"><p><code>
115 <var>type</var>=<var>timeout</var>-<var>maxtimeout</var>,MinRate=<var>data_rate</var>
118 <p>Same as above, but the timeout will not be increased above the second
119 value of the specified timeout range.</p>
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127 <div class="section">
128 <h2><a name="examples" id="examples">Examples</a></h2>
132 Allow 10 seconds to receive the request including the headers and
133 30 seconds for receiving the request body:
135 <pre class="prettyprint lang-config">RequestReadTimeout header=10 body=30</pre>
140 Allow at least 10 seconds to receive the request body.
141 If the client sends data, increase the timeout by 1 second for every
142 1000 bytes received, with no upper limit for the timeout (except for
143 the limit given indirectly by
144 <code class="directive"><a href="../mod/core.html#limitrequestbody">LimitRequestBody</a></code>):
146 <pre class="prettyprint lang-config">RequestReadTimeout body=10,MinRate=1000</pre>
151 Allow at least 10 seconds to receive the request including the headers.
152 If the client sends data, increase the timeout by 1 second for every
153 500 bytes received. But do not allow more than 30 seconds for the
154 request including the headers:
156 <pre class="prettyprint lang-config">RequestReadTimeout header=10-30,MinRate=500</pre>
161 Usually, a server should have both header and body timeouts configured.
162 If a common configuration is used for http and https virtual hosts, the
163 timeouts should not be set too low:
165 <pre class="prettyprint lang-config">RequestReadTimeout header=20-40,MinRate=500 body=20,MinRate=500</pre>
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173 <p><span>Available Languages: </span><a href="../en/mod/mod_reqtimeout.html" title="English"> en </a></p>
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