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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE modulesynopsis SYSTEM "../style/modulesynopsis.dtd">
<?xml-stylesheet type="text/xsl" href="../style/manual.en.xsl"?>
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<modulesynopsis metafile="mod_proxy_wstunnel.xml.meta">
<name>mod_proxy_wstunnel</name>
<description>Websockets support module for
<module>mod_proxy</module></description>
<status>Extension</status>
<sourcefile>mod_proxy_wstunnel.c</sourcefile>
<identifier>proxy_wstunnel_module</identifier>
<compatibility>Available in httpd 2.4.5 and later</compatibility>
<summary>
<p>This module <em>requires</em> the service of <module
>mod_proxy</module>. It provides support for the tunnelling of web
socket connections to a backend websockets server. The connection
is automagically upgraded to a websocket connection:</p>
<highlight language="config">
Upgrade: WebSocket
Connection: Upgrade
</highlight>
<example><title>Proxying requests to websockets server</title>
<highlight language="config">
ProxyPass "/ws2/" "ws://echo.websocket.org/"
ProxyPass "/wss2/" "wss://echo.websocket.org/"
</highlight>
</example>
</summary>
<seealso><module>mod_proxy</module></seealso>
<directivesynopsis>
<name>ProxyWebsocketAsync</name>
<description>Instructs this module to try to create an asynchronous tunnel</description>
<syntax>ProxyWebsocketAsync ON|OFF</syntax>
<contextlist><context>server config</context>
<context>virtual host</context>
</contextlist>
<usage>
<p>This directive instructs the server to try to create an asynchronous tunnel.
If the current MPM does not support the necessary features, a synchronous
tunnel is used.</p>
<note><title>Note</title><p>Async support is experimental and subject
to change.</p></note>
</usage>
</directivesynopsis>
<directivesynopsis>
<name>ProxyWebsocketIdleTimeout</name>
<description>Sets the maximum amount of time to wait for data on the websockets tunnel</description>
<syntax>ProxyWebsocketIdleTimeout <var>num</var>[ms]</syntax>
<default>ProxyWebsocketIdleTimeout 0</default>
<contextlist><context>server config</context>
<context>virtual host</context>
</contextlist>
<usage>
<p>This directive imposes a maximum amount of time for the tunnel to be
left open while idle.</p>
</usage>
</directivesynopsis>
<directivesynopsis>
<name>ProxyWebsocketAsyncDelay</name>
<description>Sets the amount of time the tunnel waits synchronously for data</description>
<syntax>ProxyWebsocketAsyncDelay <var>num</var>[ms]</syntax>
<default>ProxyWebsocketAsyncDelay 0</default>
<contextlist><context>server config</context>
<context>virtual host</context>
</contextlist>
<usage>
<p>If <directive>ProxyWebsocketAsync</directive> is enabled, this directive
controls how long the server synchronously waits for more data.</p>
<note><title>Note</title><p>Async support is experimental and subject
to change. </p></note>
</usage>
</directivesynopsis>
</modulesynopsis>
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