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<h1 class="lined-header"><span>cowboy_req:headers(3)</span></h1>

<div class="sect1">
<h2 id="_name">Name</h2>
<div class="sectionbody">
<div class="paragraph"><p>cowboy_req:headers - HTTP headers</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_description">Description</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">headers</span></span>(<span style="color: #009900">Req</span> <span style="color: #990000">::</span> <span style="font-weight: bold"><span style="color: #000000">cowboy_req:req</span></span>()) <span style="color: #990000">-&gt;</span> <span style="font-weight: bold"><span style="color: #000000">cowboy:http_headers</span></span>()</tt></pre></div></div>
<div class="paragraph"><p>Return all request headers.</p></div>
<div class="paragraph"><p>Request headers can also be obtained using pattern matching:</p></div>
<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="color: #FF6600">headers</span> <span style="color: #990000">:=</span> <span style="color: #009900">Headers</span>} <span style="color: #990000">=</span> <span style="color: #009900">Req</span><span style="color: #990000">.</span></tt></pre></div></div>
</div>
</div>
<div class="sect1">
<h2 id="_arguments">Arguments</h2>
<div class="sectionbody">
<div class="dlist"><dl>
<dt class="hdlist1">
Req
</dt>
<dd>
<p>
The Req object.
</p>
</dd>
</dl></div>
</div>
</div>
<div class="sect1">
<h2 id="_return_value">Return value</h2>
<div class="sectionbody">
<div class="paragraph"><p>Headers are returned as a map with keys being lowercase
binary strings, and values as binary strings.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_changelog">Changelog</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
<strong>2.0</strong>: Only the headers are returned, they are no longer wrapped in a tuple.
</p>
</li>
<li>
<p>
<strong>1.0</strong>: Function introduced.
</p>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_examples">Examples</h2>
<div class="sectionbody">
<div class="listingblock">
<div class="title">Get all headers</div>
<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="color: #009900">Headers</span> <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">cowboy_req:headers</span></span>(<span style="color: #009900">Req</span>)<span style="color: #990000">.</span></tt></pre></div></div>
</div>
</div>
<div class="sect1">
<h2 id="_see_also">See also</h2>
<div class="sectionbody">
<div class="paragraph"><p><a href="../cowboy_req">cowboy_req(3)</a>,
<a href="../cowboy_req.header">cowboy_req:header(3)</a>,
<a href="../cowboy_req.parse_header">cowboy_req:parse_header(3)</a></p></div>
</div>
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<h3>
	Cowboy
	2.0
	Function Reference
	
</h3>

<ul>
	
		<li><a href="/docs/en/cowboy/2.0/guide">User Guide</a></li>
	
	
		<li><a href="/docs/en/cowboy/2.0/manual">Function Reference</a></li>
	
	
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		<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>
	
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