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<modulesynopsis metafile="mod_reqtimeout.xml.meta">

<name>mod_reqtimeout</name>

<description>Set timeout and minimum data rate for receiving requests

</description>

<status>Extension</status>

<sourcefile>mod_reqtimeout.c</sourcefile>

<identifier>reqtimeout_module</identifier>

<compatibility>Available in Apache HTTPD 2.2.15 and later</compatibility>

<section id="examples"><title>Examples</title>

<ol>

<li>

Allow 10 seconds to receive the request including the headers and

30 seconds for receiving the request body:

<example>

RequestReadTimeout header=10 body=30

</example>

</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 (exept for

the limit given indirectly by

<directive module="core">LimitRequestBody</directive>):

<example>

RequestReadTimeout body=10,MinRate=1000

</example>

</li>

<li>

Allow at least 10 seconds to receive the request including the 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 including the headers:

<example>

RequestReadTimeout header=10-30,MinRate=500

</example>

</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:

<example>

RequestReadTimeout header=20-40,MinRate=500 body=20,MinRate=500

</example>

</li>

</ol>

</section>

<directivesynopsis>

<name>RequestReadTimeout</name>

<description>Set timeout values for receiving request headers and body from client.

</description>

<syntax>RequestReadTimeout

[header=<var>timeout</var>[-<var>maxtimeout</var>][,MinRate=<var>rate</var>]

[body=<var>timeout</var>[-<var>maxtimeout</var>][,MinRate=<var>rate</var>]

</syntax>

<default>header=20-40,MinRate=500 body=20,MinRate=500</default>

<contextlist><context>server config</context><context>virtual host</context>

</contextlist>

<compatibility>Available in version 2.2.15 and later; defaulted to disabled in

version 2.3.14 and earlier.</compatibility>

<usage>

<p>This directive can set various timeouts for receiving the request headers

and the request body from the client. If the client fails to send headers or

body within the configured time, a <code>408 REQUEST TIME OUT</code> error

is sent.</p>

<p>For SSL virtual hosts, the header timeout values include 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 header timeout values should not be set

to very low values for SSL virtual hosts.

The body timeout values include the time needed for SSL renegotiation

(if necessary).</p>

<p>When an <directive module="core">AcceptFilter</directive> 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 header timeout configured with

<code>RequestReadTimeout</code> is only effective after the server process has

received the socket.</p>

<p>For each of the two timeout types (header or body), there are three ways

to specify the timeout:

</p>

<ul>

<li><strong>Fixed timeout value</strong>:<br />

<example><var>type</var>=<var>timeout</var></example>

<p>The time in seconds allowed for reading all of the request headers or

body, respectively. A value of 0 means no limit.</p>

</li>

<li><strong>Disable module for a vhost:</strong>:<br />

<example>header=0 body=0</example>

<p>This disables <module>mod_reqtimeout</module> completely.</p>

</li>

<li><strong>Timeout value that is increased when data is

received</strong>:<br />

<example>

<var>type</var>=<var>timeout</var>,MinRate=<var>data_rate</var>

</example>

<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 />

<example>

<var>type</var>=<var>timeout</var>-<var>maxtimeout</var>,MinRate=<var>data_rate</var>

</example>

<p>Same as above, but the timeout will not be increased above the second

value of the specified timeout range.</p>

</li>

</ul>

</usage>

</directivesynopsis>

</modulesynopsis>