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title: nng_aio_set_msg(3)
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<h1>nng_aio_set_msg(3)</h1>
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<h2 id="_name">NAME</h2>
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<p>nng_aio_set_msg - set message for asynchronous send</p>
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<h2 id="_synopsis">SYNOPSIS</h2>
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<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span><span class="tok-w"> </span><span class="tok-cpf">&lt;nng/nng.h&gt;</span>

<span class="tok-kt">void</span><span class="tok-w"> </span><span class="tok-nf">nng_aio_set_msg</span><span class="tok-p">(</span><span class="tok-n">nng_aio</span><span class="tok-w"> </span><span class="tok-o">*</span><span class="tok-n">aio</span><span class="tok-p">,</span><span class="tok-w"> </span><span class="tok-n">nng_msg</span><span class="tok-w"> </span><span class="tok-o">*</span><span class="tok-n">msg</span><span class="tok-p">);</span></code></pre>
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<h2 id="_description">DESCRIPTION</h2>
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<p>The <code>nng_aio_set_msg()</code> function sets the message that will be used
for an asynchronous send operation (see <a href="nng_send_aio.3.html"><code>nng_send_aio()</code></a>).</p>
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The <a href="nng_aio.5.html"><code>nng_aio</code></a> must not have an operation in progress.
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<h2 id="_return_values">RETURN VALUES</h2>
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<p>None.</p>
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<h2 id="_errors">ERRORS</h2>
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<p>None.</p>
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<h2 id="_see_also">SEE ALSO</h2>
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<p><a href="nng_aio_get_msg.3.html">nng_aio_get_msg(3)</a>,
<a href="nng_send_aio.3.html">nng_send_aio(3)</a>,
<a href="nng_aio.5.html">nng_aio(5)</a>,
<a href="nng_msg.5.html">nng_msg(5)</a>,
<a href="nng.7.html">nng(7)</a></p>
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