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</head>
<body class="manpage">
<div id="header">
<h1>nn_tcp(7) Manual Page</h1>
<h2>NAME</h2>
<div class="sectionbody">
<p>nn_tcp - TCP transport mechanism</p>
</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="paragraph">
<p><strong>#include &lt;nanomsg/nn.h&gt;</strong></p>
</div>
<div class="paragraph">
<p><strong>#include &lt;nanomsg/tcp.h&gt;</strong></p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph">
<p>TCP transport allows for passing messages over the network using simple reliable
one-to-one connections. TCP is the most widely used transport protocol, it is
virtually ubiquitous and thus the transport of choice for communication over
the network.</p>
</div>
<div class="paragraph">
<p>When binding a TCP socket address of the form tcp://interface:port should be
used. Port is the TCP port number to use. Interface is one of the following
(optionally placed within square brackets):</p>
</div>
<div class="ulist">
<ul>
<li>
<p>Asterisk character (*) meaning all local network interfaces.</p>
</li>
<li>
<p>IPv4 address of a local network interface in numeric form (192.168.0.111).</p>
</li>
<li>
<p>IPv6 address of a local network interface in numeric form (::1).</p>
</li>
</ul>
</div>
<div class="paragraph">
<p>When connecting a TCP socket address of the form tcp://interface;address:port
should be used. Port is the TCP port number to use. Interface is optional and
specifies which local network interface to use. If not specified, OS will select
an appropriate interface itself. If specified it can be one of the following
(optionally placed within square brackets):</p>
</div>
<div class="ulist">
<ul>
<li>
<p>IPv4 address of a local network interface in numeric form (192.168.0.111).</p>
</li>
<li>
<p>IPv6 address of a local network interface in numeric form (::1).</p>
</li>
</ul>
</div>
<div class="paragraph">
<p>Finally, address specifies the remote address to connect to. It can be one of
the following (optionally placed within square brackets):</p>
</div>
<div class="ulist">
<ul>
<li>
<p>IPv4 address of a remote network interface in numeric form (192.168.0.111).</p>
</li>
<li>
<p>IPv6 address of a remote network interface in numeric form (::1).</p>
</li>
<li>
<p>The DNS name of the remote box.</p>
</li>
</ul>
</div>
<div class="sect2">
<h3 id="_socket_options">Socket Options</h3>
<div class="dlist">
<dl>
<dt class="hdlist1">NN_TCP_NODELAY</dt>
<dd>
<p>This option, when set to 1, disables Nagle&#8217;s algorithm. It also disables
delaying of TCP acknowledgments. Using this option improves latency at
the expense of throughput. Type of this option is int. Default value is 0.</p>
</dd>
</dl>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_example">EXAMPLE</h2>
<div class="sectionbody">
<div class="listingblock">
<div class="content">
<pre>nn_bind (s1, "tcp://*:5555");
nn_connect (s2, "tcp://myserver:5555");</pre>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_see_also">SEE ALSO</h2>
<div class="sectionbody">
<div class="paragraph">
<p><a href="nn_inproc.html">nn_inproc(7)</a>
<a href="nn_ipc.html">nn_ipc(7)</a>
<a href="nn_bind.html">nn_bind(3)</a>
<a href="nn_connect.html">nn_connect(3)</a>
<a href="nanomsg.html">nanomsg(7)</a></p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_authors">AUTHORS</h2>
<div class="sectionbody">
<div class="paragraph">
<p><a href="mailto:sustrik@250bpm.com">Martin Sustrik</a></p>
</div>
</div>
</div>
</div>
<div id="footer">
<div id="footer-text">
nanomsg 1.1.4<br>
Last updated 2018-06-08 00:55:45 UTC
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</div>
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