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<h1 class="lined-header"><span>ranch:get_port(3)</span></h1>
<h2 id="_name">Name</h2>
<p>ranch:get_port - Get the listening port</p>
<h2 id="_description">Description</h2>
<div class="listingblock"><div class="content"><!-- Generator: GNU source-highlight 3.1.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><b><font color="#000000">get_port</font></b>(<font color="#009900">Ref</font> <font color="#990000">::</font> <b><font color="#000000">ranch:ref</font></b>())
<font color="#990000">-></font> <font color="#009900">Port</font> <font color="#990000">::</font> <b><font color="#000000">inet:port_number</font></b>() | <font color="#000080">undefined</font></tt></pre>
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<p>Get the listening port.</p>
<p>This function is particularly useful to retrieve the listening port number when it was not provided in the options and was chosen randomly instead.</p>
<h2 id="_arguments">Arguments</h2>
<dl><dt>Ref</dt>
<dd><p>The listener name.</p>
</dd>
</dl>
<h2 id="_return_value">Return value</h2>
<p>The listening port is returned.</p>
<p>When the listener is suspended or using a UNIX Domain socket instead of a network interface, <code>undefined</code> will be returned.</p>
<h2 id="_examples">Examples</h2>
<div class="listingblock"><div class="title">Get the listening port</div>
<div class="content"><!-- Generator: GNU source-highlight 3.1.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><font color="#009900">Port</font> <font color="#990000">=</font> <b><font color="#000000">ranch:get_port</font></b>(<font color="#FF6600">example</font>)<font color="#990000">.</font></tt></pre>
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<h2 id="_see_also">See also</h2>
<p><a href="../ranch.start_listener">ranch:start_listener(3)</a>, <a href="../ranch.get_addr">ranch:get_addr(3)</a>, <a href="../ranch.info">ranch:info(3)</a>, <a href="../ranch">ranch(3)</a></p>
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<h3>
Ranch
2.1
Function Reference
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<li><a href="/docs/en/ranch/2.1/manual">Function Reference</a></li>
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<li><a href="/docs/en/ranch/2.1/manual">2.1</a></li>
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<li><a href="/docs/en/ranch/1.8/manual">1.8</a></li>
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