diff options
| author | Martin Lucina <mato@kotelna.sk> | 2011-03-28 10:39:51 +0200 |
|---|---|---|
| committer | Martin Lucina <martin@lucina.net> | 2012-01-23 08:53:37 +0100 |
| commit | 3e20cb1b8a2b1ca222011df37334e5f4f88dd565 (patch) | |
| tree | 4a753775186bc7f583f1ceb3f9aa675b6f110596 /doc/zmq_tcp.html | |
| parent | 3f0085ddbef1a44b6bb7a0b23af497d56e0025fa (diff) | |
| parent | e645fc2693acc796304498909786b7b47005b429 (diff) | |
Imported Debian patch 2.1.3-1debian/2.1.3-1
Diffstat (limited to 'doc/zmq_tcp.html')
| -rw-r--r-- | doc/zmq_tcp.html | 755 |
1 files changed, 0 insertions, 755 deletions
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-<div id="header">
-<h1>
-zmq_tcp(7) Manual Page
-</h1>
-<h2>NAME</h2>
-<div class="sectionbody">
-<p>zmq_tcp -
- 0MQ unicast transport using TCP
-</p>
-</div>
-</div>
-<div id="content">
-<h2 id="_synopsis">SYNOPSIS</h2>
-<div class="sectionbody">
-<div class="paragraph"><p>TCP is an ubiquitous, reliable, unicast transport. When connecting distributed
-applications over a network with ØMQ, using the TCP transport will likely be
-your first choice.</p></div>
-</div>
-<h2 id="_addressing">ADDRESSING</h2>
-<div class="sectionbody">
-<div class="paragraph"><p>A ØMQ address string consists of two parts as follows:
-<em>transport</em><tt>://</tt><em>endpoint</em>. The <em>transport</em> part specifies the underlying
-transport protocol to use, and for the TCP transport shall be set to <tt>tcp</tt>.
-The meaning of the <em>endpoint</em> part for the TCP transport is defined below.</p></div>
-<h3 id="_assigning_a_local_address_to_a_socket">Assigning a local address to a socket</h3><div style="clear:left"></div>
-<div class="paragraph"><p>When assigning a local address to a socket using <em>zmq_bind()</em> with the <em>tcp</em>
-transport, the <em>endpoint</em> shall be interpreted as an <em>interface</em> followed by a
-colon and the TCP port number to use.</p></div>
-<div class="paragraph"><p>An <em>interface</em> may be specified by either of the following:</p></div>
-<div class="ulist"><ul>
-<li>
-<p>
-The wildcard <tt>*</tt>, meaning all available interfaces.
-</p>
-</li>
-<li>
-<p>
-The primary IPv4 address assigned to the interface, in its numeric
- representation.
-</p>
-</li>
-<li>
-<p>
-The interface name as defined by the operating system.
-</p>
-</li>
-</ul></div>
-<div class="admonitionblock">
-<table><tr>
-<td class="icon">
-<div class="title">Note</div>
-</td>
-<td class="content">Interface names are not standardised in any way and should be assumed to
-be arbitrary and platform dependent. On Win32 platforms no short interface
-names exist, thus only the primary IPv4 address may be used to specify an
-<em>interface</em>.</td>
-</tr></table>
-</div>
-<h3 id="_connecting_a_socket">Connecting a socket</h3><div style="clear:left"></div>
-<div class="paragraph"><p>When connecting a socket to a peer address using <em>zmq_connect()</em> with the <em>tcp</em>
-transport, the <em>endpoint</em> shall be interpreted as a <em>peer address</em> followed by
-a colon and the TCP port number to use.</p></div>
-<div class="paragraph"><p>A <em>peer address</em> may be specified by either of the following:</p></div>
-<div class="ulist"><ul>
-<li>
-<p>
-The DNS name of the peer.
-</p>
-</li>
-<li>
-<p>
-The IPv4 address of the peer, in it’s numeric representation.
-</p>
-</li>
-</ul></div>
-</div>
-<h2 id="_wire_format">WIRE FORMAT</h2>
-<div class="sectionbody">
-<div class="paragraph"><p>ØMQ messages are transmitted over TCP in frames consisting of an encoded
-<em>payload length</em>, followed by a <em>flags</em> field and the message body. The <em>payload
-length</em> is defined as the combined length in octets of the message body and the
-<em>flags</em> field.</p></div>
-<div class="paragraph"><p>For frames with a <em>payload length</em> not exceeding 254 octets, the <em>payload
-length</em> shall be encoded as a single octet. The minimum valid <em>payload length</em>
-of a frame is 1 octet, thus a <em>payload length</em> of 0 octets is invalid and such
-frames SHOULD be ignored.</p></div>
-<div class="paragraph"><p>For frames with a <em>payload length</em> exceeding 254 octets, the <em>payload length</em>
-shall be encoded as a single octet with the value <tt>255</tt> followed by the
-<em>payload length</em> represented as a 64-bit unsigned integer in network byte
-order.</p></div>
-<div class="paragraph"><p>The <em>flags</em> field consists of a single octet containing various control flags:</p></div>
-<div class="paragraph"><p>Bit 0 (MORE): <em>More message parts to follow</em>. A value of 0 indicates that there
-are no more message parts to follow; or that the message being sent is not a
-multi-part message. A value of 1 indicates that the message being sent is a
-multi-part message and more message parts are to follow.</p></div>
-<div class="paragraph"><p>Bits 1-7: <em>Reserved</em>. Bits 1-7 are reserved for future expansion and MUST be
-set to zero.</p></div>
-<div class="paragraph"><p>The following ABNF grammar represents a single <em>frame</em>:</p></div>
-<div class="literalblock">
-<div class="content">
-<pre><tt> frame = (length flags data)
- length = OCTET / (escape 8OCTET)
- flags = OCTET
- escape = %xFF
- data = *OCTET</tt></pre>
-</div></div>
-<div class="paragraph"><p>The following diagram illustrates the layout of a frame with a <em>payload length</em>
-not exceeding 254 octets:</p></div>
-<div class="literalblock">
-<div class="content">
-<pre><tt>0 1 2 3
-0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-| Payload length| Flags | Message body ... |
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-| Message body ...
-+-+-+-+-+-+-+- ...</tt></pre>
-</div></div>
-<div class="paragraph"><p>The following diagram illustrates the layout of a frame with a <em>payload length</em>
-exceeding 254 octets:</p></div>
-<div class="literalblock">
-<div class="content">
-<pre><tt>0 1 2 3
-0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-| 0xff | Payload length ... |
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-| Payload length ... |
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-| Payload length| Flags | Message body ... |
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-| Message body ...
-+-+-+-+-+-+-+-+ ...</tt></pre>
-</div></div>
-</div>
-<h2 id="_examples">EXAMPLES</h2>
-<div class="sectionbody">
-<div class="listingblock">
-<div class="title">Assigning a local address to a socket</div>
-<div class="content">
-<pre><tt>/* TCP port 5555 on all available interfaces */
-rc = zmq_bind(socket, "tcp://*:5555");
-assert (rc == 0);
-/* TCP port 5555 on the local loopback interface on all platforms */
-rc = zmq_bind(socket, "tcp://127.0.0.1:5555");
-assert (rc == 0);
-/* TCP port 5555 on the first ethernet network interface on Linux */
-rc = zmq_bind(socket, "tcp://eth0:5555");
-assert (rc == 0);</tt></pre>
-</div></div>
-<div class="listingblock">
-<div class="title">Connecting a socket</div>
-<div class="content">
-<pre><tt>/* Connecting using an IP address */
-rc = zmq_connect(socket, "tcp://192.168.1.1:5555");
-assert (rc == 0);
-/* Connecting using a DNS name */
-rc = zmq_connect(socket, "tcp://server1:5555");
-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_bind.html">zmq_bind(3)</a>
-<a href="zmq_connect.html">zmq_connect(3)</a>
-<a href="zmq_pgm.html">zmq_pgm(7)</a>
-<a href="zmq_ipc.html">zmq_ipc(7)</a>
-<a href="zmq_inproc.html">zmq_inproc(7)</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>
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