docs/en/cowboy/2.3/manual/cowboy/index.html


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<h1 class="lined-header"><span>cowboy(3)</span></h1>

<div class="sect1">
<h2 id="_name">Name</h2>
<div class="sectionbody">
<div class="paragraph"><p>cowboy - HTTP server</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_description">Description</h2>
<div class="sectionbody">
<div class="paragraph"><p>The module <code>cowboy</code> provides convenience functions for
manipulating Ranch listeners.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_exports">Exports</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
<a href="../cowboy.start_clear">cowboy:start_clear(3)</a> - Listen for connections using plain TCP
</p>
</li>
<li>
<p>
<a href="../cowboy.start_tls">cowboy:start_tls(3)</a> - Listen for connections using TLS
</p>
</li>
<li>
<p>
<a href="../cowboy.stop_listener">cowboy:stop_listener(3)</a> - Stop the given listener
</p>
</li>
<li>
<p>
<a href="../cowboy.set_env">cowboy:set_env(3)</a> - Update a listener&#8217;s environment value
</p>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_types">Types</h2>
<div class="sectionbody">
<div class="sect2">
<h3 id="_fields">fields()</h3>
<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">fields</span></span>() <span style="color: #990000">::</span> [<span style="color: #009900">Name</span>
           | {<span style="color: #009900">Name</span>, <span style="color: #009900">Constraints</span>}
           | {<span style="color: #009900">Name</span>, <span style="color: #009900">Constraints</span>, <span style="color: #009900">Default</span>}]

<span style="color: #009900">Name</span>        <span style="color: #990000">::</span> <span style="font-weight: bold"><span style="color: #000080">atom</span></span>()
<span style="color: #009900">Constraints</span> <span style="color: #990000">::</span> <span style="color: #009900">Constraint</span> | [<span style="color: #009900">Constraint</span>]
<span style="color: #009900">Constraint</span>  <span style="color: #990000">::</span> <span style="font-weight: bold"><span style="color: #000000">cowboy_constraints:constraint</span></span>()
<span style="color: #009900">Default</span>     <span style="color: #990000">::</span> <span style="font-weight: bold"><span style="color: #000000">any</span></span>()</tt></pre></div></div>
<div class="paragraph"><p>Fields description for match operations.</p></div>
<div class="paragraph"><p>This type is used in <a href="../cowboy_router">cowboy_router(3)</a>
for matching bindings and in the match functions found in
<a href="../cowboy_req">cowboy_req(3)</a>.</p></div>
</div>
<div class="sect2">
<h3 id="_http_headers">http_headers()</h3>
<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">http_headers</span></span>() <span style="color: #990000">::</span> #{<span style="font-weight: bold"><span style="color: #000080">binary</span></span>() <span style="color: #990000">=&gt;</span> <span style="font-weight: bold"><span style="color: #000000">iodata</span></span>()}</tt></pre></div></div>
<div class="paragraph"><p>HTTP headers.</p></div>
</div>
<div class="sect2">
<h3 id="_http_status">http_status()</h3>
<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">http_status</span></span>() <span style="color: #990000">::</span> <span style="font-weight: bold"><span style="color: #000000">non_neg_integer</span></span>() | <span style="font-weight: bold"><span style="color: #000080">binary</span></span>()</tt></pre></div></div>
<div class="paragraph"><p>HTTP response status.</p></div>
<div class="paragraph"><p>A binary status can be used to set a reason phrase. Note
however that HTTP/2 only sends the status code and drops
the reason phrase entirely.</p></div>
</div>
<div class="sect2">
<h3 id="_http_version">http_version()</h3>
<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">http_version</span></span>() <span style="color: #990000">::</span> <span style="color: #FF6600">'HTTP/2'</span> | <span style="color: #FF6600">'HTTP/1.1'</span> | <span style="color: #FF6600">'HTTP/1.0'</span></tt></pre></div></div>
<div class="paragraph"><p>HTTP version.</p></div>
<div class="paragraph"><p>Note that semantically, HTTP/1.1 and HTTP/2 are equivalent.</p></div>
</div>
<div class="sect2">
<h3 id="_opts">opts()</h3>
<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="font-weight: bold"><span style="color: #000000">map</span></span>()</tt></pre></div></div>
<div class="paragraph"><p>Options for the HTTP/1.1, HTTP/2 and Websocket protocols.</p></div>
<div class="paragraph"><p>The protocol options are in a map containing all the options for
the different protocols that may be involved when connecting
to the listener, including HTTP/1.1 and HTTP/2.</p></div>
<div class="paragraph"><p>The HTTP/1.1 options are documented in the
<a href="../cowboy_http">cowboy_http(3)</a> manual
and the HTTP/2 options in
<a href="../cowboy_http2">cowboy_http2(3)</a>.</p></div>
</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="../ranch">ranch(3)</a></p></div>
</div>
</div>


</div>

<div class="span3 sidecol">


<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/2.4/manual">2.4</a></li>
	
		<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>
	
</ul>

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