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<title>Nine Nines: cowboy_http2(3)</title>
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<h1 class="lined-header"><span>cowboy_http2(3)</span></h1>
<div class="sect1">
<h2 id="_name">Name</h2>
<div class="sectionbody">
<div class="paragraph"><p>cowboy_http2 - HTTP/2</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_description">Description</h2>
<div class="sectionbody">
<div class="paragraph"><p>The module <code>cowboy_http2</code> implements HTTP/2
as a Ranch protocol.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_options">Options</h2>
<div class="sectionbody">
<div class="listingblock">
<div class="content"><!-- Generator: GNU source-highlight
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="font-weight: bold"><span style="color: #000000">opts</span></span>() <span style="color: #990000">::</span> #{
<span style="color: #0000FF">connection_type</span> <span style="color: #990000">=></span> <span style="color: #FF6600">worker</span> | <span style="color: #FF6600">supervisor</span>,
<span style="color: #0000FF">enable_connect_protocol</span> <span style="color: #990000">=></span> <span style="font-weight: bold"><span style="color: #000000">boolean</span></span>(),
<span style="color: #0000FF">env</span> <span style="color: #990000">=></span> <span style="font-weight: bold"><span style="color: #000000">cowboy_middleware:env</span></span>(),
<span style="color: #0000FF">inactivity_timeout</span> <span style="color: #990000">=></span> <span style="font-weight: bold"><span style="color: #000000">timeout</span></span>(),
<span style="color: #0000FF">middlewares</span> <span style="color: #990000">=></span> [<span style="font-weight: bold"><span style="color: #000000">module</span></span>()],
<span style="color: #0000FF">preface_timeout</span> <span style="color: #990000">=></span> <span style="font-weight: bold"><span style="color: #000000">timeout</span></span>(),
<span style="color: #000080">shutdown</span><span style="color: #009900">_timeout</span> <span style="color: #990000">=></span> <span style="font-weight: bold"><span style="color: #000000">timeout</span></span>(),
<span style="color: #0000FF">stream_handlers</span> <span style="color: #990000">=></span> [<span style="font-weight: bold"><span style="color: #000000">module</span></span>()]
}</tt></pre></div></div>
<div class="paragraph"><p>Configuration for the HTTP/2 protocol.</p></div>
<div class="paragraph"><p>This configuration is passed to Cowboy when starting listeners
using <code>cowboy:start_clear/3</code> or <code>cowboy:start_tls/3</code> functions.</p></div>
<div class="paragraph"><p>It can be updated without restarting listeners using the
Ranch functions <code>ranch:get_protocol_options/1</code> and
<code>ranch:set_protocol_options/2</code>.</p></div>
<div class="paragraph"><p>The default value is given next to the option name:</p></div>
<div class="dlist"><dl>
<dt class="hdlist1">
connection_type (supervisor)
</dt>
<dd>
<p>
Whether the connection process also acts as a supervisor.
</p>
</dd>
<dt class="hdlist1">
enable_connect_protocol (false)
</dt>
<dd>
<p>
Whether to enable the extended CONNECT method to allow
protocols like Websocket to be used over an HTTP/2 stream.
</p>
</dd>
<dt class="hdlist1">
env (#{})
</dt>
<dd>
<p>
Middleware environment.
</p>
</dd>
<dt class="hdlist1">
inactivity_timeout (300000)
</dt>
<dd>
<p>
Time in ms with nothing received at all before Cowboy closes the connection.
</p>
</dd>
<dt class="hdlist1">
middlewares ([cowboy_router, cowboy_handler])
</dt>
<dd>
<p>
Middlewares to run for every request.
</p>
</dd>
<dt class="hdlist1">
preface_timeout (5000)
</dt>
<dd>
<p>
Time in ms Cowboy is willing to wait for the connection preface.
</p>
</dd>
<dt class="hdlist1">
shutdown_timeout (5000)
</dt>
<dd>
<p>
Time in ms Cowboy will wait for child processes to shut down before killing them.
</p>
</dd>
<dt class="hdlist1">
stream_handlers ([cowboy_stream_h])
</dt>
<dd>
<p>
Ordered list of stream handlers that will handle all stream events.
</p>
</dd>
</dl></div>
</div>
</div>
<div class="sect1">
<h2 id="_changelog">Changelog</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
<strong>2.0</strong>: Protocol introduced.
</p>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_see_also">See also</h2>
<div class="sectionbody">
<div class="paragraph"><p><a href="..">cowboy(7)</a>,
<a href="../cowboy_http">cowboy_http(3)</a>,
<a href="../cowboy_websocket">cowboy_websocket(3)</a></p></div>
</div>
</div>
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<h3>
Cowboy
2.3
Function Reference
</h3>
<ul>
<li><a href="/docs/en/cowboy/2.3/guide">User Guide</a></li>
<li><a href="/docs/en/cowboy/2.3/manual">Function Reference</a></li>
</ul>
<h4 id="docs-nav">Navigation</h4>
<h4>Version select</h4>
<ul>
<li><a href="/docs/en/cowboy/2.3/manual">2.3</a></li>
<li><a href="/docs/en/cowboy/2.2/manual">2.2</a></li>
<li><a href="/docs/en/cowboy/2.1/manual">2.1</a></li>
<li><a href="/docs/en/cowboy/2.0/manual">2.0</a></li>
<li><a href="/docs/en/cowboy/1.0/manual">1.0</a></li>
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