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---
version: v1.2.4
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---
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<h1>nng_http_req_set_version(3http) Manual Page</h1>
<div id="toc" class="toc2">
<div id="toctitle">Table of Contents</div>
<ul class="sectlevel1">
<li><a href="#_synopsis">SYNOPSIS</a></li>
<li><a href="#_description">DESCRIPTION</a></li>
<li><a href="#_return_values">RETURN VALUES</a></li>
<li><a href="#_errors">ERRORS</a></li>
<li><a href="#_see_also">SEE ALSO</a></li>
</ul>
</div>
<h2 id="_name">NAME</h2>
<div class="sectionbody">
<p>nng_http_req_set_version - set HTTP request protocol version</p>
</div>
</div>
<div id="content">
<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></span><span class="tok-cp">#include</span> <span class="tok-cpf"><nng/nng.h></span><span class="tok-cp"></span>
<span class="tok-cp">#include</span> <span class="tok-cpf"><nng/supplemental/http/http.h></span><span class="tok-cp"></span>
<span class="tok-kt">int</span> <span class="tok-nf">nng_http_req_set_version</span><span class="tok-p">(</span><span class="tok-n">nng_http_req</span> <span class="tok-o">*</span><span class="tok-n">req</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">version</span><span class="tok-p">);</span></code></pre>
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<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The <code>nng_http_req_set_version()</code> sets the HTTP protocol version associated with
the request <em>req</em> to <em>version</em>.
The <em>version</em> must be a string containing
a valid HTTP protocol version, such as "HTTP/1.0".
The default value is "HTTP/1.1".</p>
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<div class="paragraph">
<p>A local copy of the <em>version</em> is made in the request <em>req</em>.</p>
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<div class="admonitionblock note">
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<td class="content">
No validation of the version supplied is performed.
</td>
</tr>
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<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Note"></i>
</td>
<td class="content">
The library does not contain support for versions of HTTP other than
"HTTP/1.0" and "HTTP/1.1".
Specifying any other version may result in unspecified behavior.
</td>
</tr>
</table>
</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">
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<tr>
<td class="hdlist1">
<code>NNG_ENOMEM</code>
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<p>Insufficient memory to perform the operation.</p>
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<td class="hdlist1">
<code>NNG_ENOTSUP</code>
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<td class="hdlist2">
<p>No support for HTTP in the library.</p>
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</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_req_alloc.3http.html">nng_http_req_alloc(3http)</a>,
<a href="nng_http_req_get_version.3http.html">nng_http_req_get_version(3http)</a>,
<a href="nng.7.html">nng(7)</a></p>
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