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<body>
<div id="header">
<h1>
zmq_msg_init(3) Manual Page
</h1>
<h2>NAME</h2>
<div class="sectionbody">
<p>zmq_msg_init -
initialise empty 0MQ message
</p>
</div>
</div>
<div id="content">
<h2 id="_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="paragraph"><p><strong>int zmq_msg_init (zmq_msg_t <em>*msg</em>);</strong></p></div>
</div>
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph"><p>The <em>zmq_msg_init()</em> function shall initialise the message object referenced by
<em>msg</em> to represent an empty message. This function is most useful when called
before receiving a message with <em>zmq_recv()</em>.</p></div>
<div class="admonitionblock">
<table><tr>
<td class="icon">
<div class="title">Caution</div>
</td>
<td class="content">Never access <em>zmq_msg_t</em> members directly, instead always use the
<em>zmq_msg</em> family of functions.</td>
</tr></table>
</div>
<div class="admonitionblock">
<table><tr>
<td class="icon">
<div class="title">Caution</div>
</td>
<td class="content">The functions <em>zmq_msg_init()</em>, <em>zmq_msg_init_data()</em> and
<em>zmq_msg_init_size()</em> are mutually exclusive. Never initialize the same
<em>zmq_msg_t</em> twice.</td>
</tr></table>
</div>
</div>
<h2 id="_return_value">RETURN VALUE</h2>
<div class="sectionbody">
<div class="paragraph"><p>The <em>zmq_msg_init()</em> function shall return zero if successful. Otherwise it
shall return <tt>-1</tt> and set <em>errno</em> to one of the values defined below.</p></div>
</div>
<h2 id="_errors">ERRORS</h2>
<div class="sectionbody">
<div class="paragraph"><p>No errors are defined.</p></div>
</div>
<h2 id="_example">EXAMPLE</h2>
<div class="sectionbody">
<div class="listingblock">
<div class="title">Receiving a message from a socket</div>
<div class="content">
<pre><tt>zmq_msg_t msg;
rc = zmq_msg_init (&msg);
assert (rc == 0);
rc = zmq_recv (socket, &msg, 0);
assert (rc == 0);</tt></pre>
</div></div>
</div>
<h2 id="_see_also">SEE ALSO</h2>
<div class="sectionbody">
<div class="paragraph"><p><a href="zmq_msg_init_size.html">zmq_msg_init_size(3)</a>
<a href="zmq_msg_init_data.html">zmq_msg_init_data(3)</a>
<a href="zmq_msg_close.html">zmq_msg_close(3)</a>
<a href="zmq_msg_data.html">zmq_msg_data(3)</a>
<a href="zmq_msg_size.html">zmq_msg_size(3)</a>
<a href="zmq.html">zmq(7)</a></p></div>
</div>
<h2 id="_authors">AUTHORS</h2>
<div class="sectionbody">
<div class="paragraph"><p>The ØMQ documentation was written by Martin Sustrik <<a href="mailto:sustrik@250bpm.com">sustrik@250bpm.com</a>> and
Martin Lucina <<a href="mailto:mato@kotelna.sk">mato@kotelna.sk</a>>.</p></div>
</div>
</div>
<div id="footnotes"><hr /></div>
<div id="footer">
<div id="footer-text">
ØMQ 2.0.10<br />
Last updated 2010-10-15 19:26:37 CEST
</div>
</div>
</body>
</html>
|
