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libzmq/doc/zmq_bind.txt
Pieter Hintjens 67e02ca8bc Use of named authors on man pages is no longer a good idea since it puts off
contributors and doesn't reflect the real process. I've taken out all named
authors and referred to the contribution policy. Hopefully this will improve
the contributions to the man pages.
2013-04-15 18:50:42 +02:00

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zmq_bind(3)
===========
NAME
----
zmq_bind - accept incoming connections on a socket
SYNOPSIS
--------
*int zmq_bind (void '*socket', const char '*endpoint');*
DESCRIPTION
-----------
The _zmq_bind()_ function binds the 'socket' to a local 'endpoint' and then
accepts incoming connections on that endpoint.
The 'endpoint' is a string consisting of a 'transport'`://` followed by an
'address'. The 'transport' specifies the underlying protocol to use. The
'address' specifies the transport-specific address to bind to.
0MQ provides the the following transports:
'tcp':: unicast transport using TCP, see linkzmq:zmq_tcp[7]
'ipc':: local inter-process communication transport, see linkzmq:zmq_ipc[7]
'inproc':: local in-process (inter-thread) communication transport, see linkzmq:zmq_inproc[7]
'pgm', 'epgm':: reliable multicast transport using PGM, see linkzmq:zmq_pgm[7]
Every 0MQ socket type except 'ZMQ_PAIR' supports one-to-many and many-to-one
semantics. The precise semantics depend on the socket type and are defined in
linkzmq:zmq_socket[3].
The 'ipc' and 'tcp' transports accept wildcard addresses: see linkzmq:zmq_ipc[7]
and linkzmq:zmq_tcp[7] for details.
NOTE: the address syntax may be different for _zmq_bind()_ and _zmq_connect()_
especially for the 'tcp', 'pgm' and 'epgm' transports.
NOTE: following a _zmq_bind()_, the socket enters a 'mute' state unless or
until at least one incoming or outgoing connection is made, at which point
the socket enters a 'ready' state. In the mute state, the socket blocks or
drops messages according to the socket type, as defined in linkzmq:zmq_socket[3].
By contrast, following a libzmq:zmq_connect[3], the socket enters the 'ready' state.
RETURN VALUE
------------
The _zmq_bind()_ function returns zero if successful. Otherwise it returns
`-1` and sets 'errno' to one of the values defined below.
ERRORS
------
*EINVAL*::
The endpoint supplied is invalid.
*EPROTONOSUPPORT*::
The requested 'transport' protocol is not supported.
*ENOCOMPATPROTO*::
The requested 'transport' protocol is not compatible with the socket type.
*EADDRINUSE*::
The requested 'address' is already in use.
*EADDRNOTAVAIL*::
The requested 'address' was not local.
*ENODEV*::
The requested 'address' specifies a nonexistent interface.
*ETERM*::
The 0MQ 'context' associated with the specified 'socket' was terminated.
*ENOTSOCK*::
The provided 'socket' was invalid.
*EMTHREAD*::
No I/O thread is available to accomplish the task.
EXAMPLE
-------
.Binding a publisher socket to an in-process and a TCP transport
----
/* Create a ZMQ_PUB socket */
void *socket = zmq_socket (context, ZMQ_PUB);
assert (socket);
/* Bind it to a in-process transport with the address 'my_publisher' */
int rc = zmq_bind (socket, "inproc://my_publisher");
assert (rc == 0);
/* Bind it to a TCP transport on port 5555 of the 'eth0' interface */
rc = zmq_bind (socket, "tcp://eth0:5555");
assert (rc == 0);
----
SEE ALSO
--------
linkzmq:zmq_connect[3]
linkzmq:zmq_socket[3]
linkzmq:zmq[7]
AUTHORS
-------
This page was written by the 0MQ community. To make a change please
read the 0MQ Contribution Policy at <http://www.zeromq.org/docs:contributing>.