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<h1 class="lined-header"><span>cowboy_req:set_resp_cookie(3)</span></h1>
<div class="sect1">
<h2 id="_name">Name</h2>
<div class="sectionbody">
<div class="paragraph"><p>cowboy_req:set_resp_cookie - Set a cookie</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 3.1.8
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">set_resp_cookie</span></span>(<span style="color: #009900">Name</span>, <span style="color: #009900">Value</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">-></span> <span style="font-weight: bold"><span style="color: #000000">set_resp_cookie</span></span>(<span style="color: #009900">Name</span>, <span style="color: #009900">Value</span>, [], <span style="color: #009900">Req</span>)
<span style="font-weight: bold"><span style="color: #000000">set_resp_cookie</span></span>(<span style="color: #009900">Name</span>, <span style="color: #009900">Value</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: #009900">Opts</span>)
<span style="color: #990000">-></span> <span style="color: #009900">Req</span>
<span style="color: #009900">Name</span> <span style="color: #990000">::</span> <span style="font-weight: bold"><span style="color: #000080">binary</span></span>() <span style="font-style: italic"><span style="color: #9A1900">%% case sensitive</span></span>
<span style="color: #009900">Value</span> <span style="color: #990000">::</span> <span style="font-weight: bold"><span style="color: #000000">iodata</span></span>() <span style="font-style: italic"><span style="color: #9A1900">%% case sensitive</span></span>
<span style="color: #009900">Opts</span> <span style="color: #990000">::</span> <span style="font-weight: bold"><span style="color: #000000">cow_cookie:cookie_opts</span></span>()</tt></pre></div></div>
<div class="paragraph"><p>Set a cookie to be sent with the response.</p></div>
<div class="paragraph"><p>Note that cookie names are case sensitive.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_arguments">Arguments</h2>
<div class="sectionbody">
<div class="dlist"><dl>
<dt class="hdlist1">
Name
</dt>
<dd>
<p>
Cookie name.
</p>
</dd>
<dt class="hdlist1">
Value
</dt>
<dd>
<p>
Cookie value.
</p>
</dd>
<dt class="hdlist1">
Req
</dt>
<dd>
<p>
The Req object.
</p>
</dd>
<dt class="hdlist1">
Opts
</dt>
<dd>
<p>
Cookie options.
</p>
</dd>
</dl></div>
</div>
</div>
<div class="sect1">
<h2 id="_return_value">Return value</h2>
<div class="sectionbody">
<div class="paragraph"><p>A new Req object is returned.</p></div>
<div class="paragraph"><p>The returned Req object must be used from that point onward,
otherwise the cookie will not be sent in the response.</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>: <code>set_resp_cookie/3</code> introduced as an alias to <code>set_resp_cookie/4</code> with no options.
</p>
</li>
<li>
<p>
<strong>2.0</strong>: The first argument type is now <code>binary()</code> instead of <code>iodata()</code>.
</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">Set a session cookie</div>
<div class="content"><!-- Generator: GNU source-highlight 3.1.8
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="color: #009900">SessionID</span> <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">base64:encode</span></span>(<span style="font-weight: bold"><span style="color: #000000">crypto:strong_rand_bytes</span></span>(<span style="color: #993399">32</span>)),
<span style="color: #009900">Req</span> <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">cowboy_req:set_resp_cookie</span></span>(<span style="color: #990000"><<</span><span style="color: #FF0000">"sessionid"</span><span style="color: #990000">>></span>, <span style="color: #009900">SessionID</span>, <span style="color: #009900">Req0</span>)<span style="color: #990000">.</span></tt></pre></div></div>
<div class="listingblock">
<div class="title">Set a cookie with an expiration time</div>
<div class="content"><!-- Generator: GNU source-highlight 3.1.8
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="color: #009900">Req</span> <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">cowboy_req:set_resp_cookie</span></span>(<span style="color: #990000"><<</span><span style="color: #FF0000">"lang"</span><span style="color: #990000">>></span>, <span style="color: #990000"><<</span><span style="color: #FF0000">"fr-FR"</span><span style="color: #990000">>></span>,
<span style="color: #009900">Req0</span>, #{<span style="color: #0000FF">max_age</span> <span style="color: #990000">=></span> <span style="color: #993399">3600</span>})<span style="color: #990000">.</span></tt></pre></div></div>
<div class="listingblock">
<div class="title">Delete a cookie</div>
<div class="content"><!-- Generator: GNU source-highlight 3.1.8
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="color: #009900">Req</span> <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">cowboy_req:set_resp_cookie</span></span>(<span style="color: #990000"><<</span><span style="color: #FF0000">"sessionid"</span><span style="color: #990000">>></span>, <span style="color: #990000"><<>></span>,
<span style="color: #009900">Req0</span>, #{<span style="color: #0000FF">max_age</span> <span style="color: #990000">=></span> <span style="color: #993399">0</span>})<span style="color: #990000">.</span></tt></pre></div></div>
<div class="listingblock">
<div class="title">Set a cookie for a specific domain and path</div>
<div class="content"><!-- Generator: GNU source-highlight 3.1.8
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="color: #009900">Req</span> <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">cowboy_req:set_resp_cookie</span></span>(<span style="color: #990000"><<</span><span style="color: #FF0000">"inaccount"</span><span style="color: #990000">>></span>, <span style="color: #990000"><<</span><span style="color: #FF0000">"1"</span><span style="color: #990000">>></span>,
<span style="color: #009900">Req0</span>, #{<span style="color: #0000FF">domain</span> <span style="color: #990000">=></span> <span style="color: #FF0000">"my.example.org"</span>, <span style="color: #0000FF">path</span> <span style="color: #990000">=></span> <span style="color: #FF0000">"/account"</span>})<span style="color: #990000">.</span></tt></pre></div></div>
<div class="listingblock">
<div class="title">Restrict a cookie to HTTPS</div>
<div class="content"><!-- Generator: GNU source-highlight 3.1.8
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="color: #009900">SessionID</span> <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">base64:encode</span></span>(<span style="font-weight: bold"><span style="color: #000000">crypto:strong_rand_bytes</span></span>(<span style="color: #993399">32</span>)),
<span style="color: #009900">Req</span> <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">cowboy_req:set_resp_cookie</span></span>(<span style="color: #990000"><<</span><span style="color: #FF0000">"sessionid"</span><span style="color: #990000">>></span>, <span style="color: #009900">SessionID</span>,
<span style="color: #009900">Req0</span>, #{<span style="color: #0000FF">secure</span> <span style="color: #990000">=></span> <span style="color: #000080">true</span>})<span style="color: #990000">.</span></tt></pre></div></div>
<div class="listingblock">
<div class="title">Restrict a cookie to HTTP</div>
<div class="content"><!-- Generator: GNU source-highlight 3.1.8
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="color: #009900">SessionID</span> <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">base64:encode</span></span>(<span style="font-weight: bold"><span style="color: #000000">crypto:strong_rand_bytes</span></span>(<span style="color: #993399">32</span>)),
<span style="color: #009900">Req</span> <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">cowboy_req:set_resp_cookie</span></span>(<span style="color: #990000"><<</span><span style="color: #FF0000">"sessionid"</span><span style="color: #990000">>></span>, <span style="color: #009900">SessionID</span>,
<span style="color: #009900">Req0</span>, #{<span style="color: #0000FF">http_only</span> <span style="color: #990000">=></span> <span style="color: #000080">true</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.set_resp_header">cowboy_req:set_resp_header(3)</a>,
<a href="../cowboy_req.set_resp_headers">cowboy_req:set_resp_headers(3)</a>,
<a href="../cowboy_req.reply">cowboy_req:reply(3)</a>,
<a href="../cowboy_req.stream_reply">cowboy_req:stream_reply(3)</a></p></div>
</div>
</div>
</div>
<div class="span3 sidecol">
<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>
</ul>
<h4 id="docs-nav">Navigation</h4>
<h4>Version select</h4>
<ul>
<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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