man/v1.5.2/nng_http_server_add_handler.3http.html


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---
version: v1.5.2
layout: manpage_v2
title: nng_http_server_add_handler(3http)
---
<h1>nng_http_server_add_handler(3http)</h1>
<div class="sect1">
<h2 id="_name">NAME</h2>
<div class="sectionbody">
<div class="paragraph">
<p>nng_http_server_add_handler - add HTTP server handler</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="listingblock">
<div class="content">
<pre class="pygments highlight"><code data-lang="c"><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span>
<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/supplemental/http/http.h&gt;</span>

<span class="tok-kt">int</span> <span class="tok-nf">nng_http_server_add_handler</span><span class="tok-p">(</span><span class="tok-n">nng_http_server</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">,</span> <span class="tok-n">nng_http_handler</span> <span class="tok-o">*</span><span class="tok-n">h</span><span class="tok-p">);</span></code></pre>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The <code>nng_http_server_add_handler()</code> adds the handler <em>h</em> to the server
instance <em>s</em>.</p>
</div>
<div class="paragraph">
<p>If another handler is already added to the server that would conflict
with handler <em>h</em>, then the operation will fail with <code>NNG_EADDRINUSE</code>.</p>
</div>
<div class="paragraph">
<p>If a handler is added to a server, and the server is subsequently
deallocated, the handler and any of its resources will also be deallocated.</p>
</div>
<div class="paragraph">
<p>Handlers that are added to a server may be subsequently removed using the
<a href="nng_http_server_del_handler.3http.html"><code>nng_http_server_del_handler()</code></a> function.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_return_values">RETURN VALUES</h2>
<div class="sectionbody">
<div class="paragraph">
<p>This function returns 0 on success, and non-zero otherwise.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_errors">ERRORS</h2>
<div class="sectionbody">
<div class="hdlist">
<table>
<tr>
<td class="hdlist1">
<code>NNG_EADDRINUSE</code>
</td>
<td class="hdlist2">
<p>Handler conflicts with another handler.</p>
</td>
</tr>
<tr>
<td class="hdlist1">
<code>NNG_ENOMEM</code>
</td>
<td class="hdlist2">
<p>Insufficient free memory exists.</p>
</td>
</tr>
<tr>
<td class="hdlist1">
<code>NNG_ENOTSUP</code>
</td>
<td class="hdlist2">
<p>HTTP not supported.</p>
</td>
</tr>
</table>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_see_also">SEE ALSO</h2>
<div class="sectionbody">
<div class="paragraph text-left">
<p><a href="nng_http_handler_alloc.3http.html">nng_http_handler_alloc(3http)</a>,
<a href="nng_http_server_del_handler.3http.html">nng_http_server_del_handler(3http)</a>,
<a href="nng_http_server_hold.3http.html">nng_http_server_hold(3http)</a>,
<a href="nng_strerror.3.html">nng_strerror(3)</a>,
<a href="nng.7.html">nng(7)</a></p>
</div>
</div>
</div>