mirror of
https://github.com/zeromq/libzmq.git
synced 2024-12-14 11:06:59 +01:00
92 lines
2.7 KiB
Plaintext
92 lines
2.7 KiB
Plaintext
zmq_connect(3)
|
|
==============
|
|
|
|
|
|
NAME
|
|
----
|
|
zmq_connect - connect a socket
|
|
|
|
|
|
SYNOPSIS
|
|
--------
|
|
*int zmq_connect (void '*socket', const char '*endpoint');*
|
|
|
|
|
|
DESCRIPTION
|
|
-----------
|
|
The _zmq_connect()_ function shall connect the socket referenced by the
|
|
'socket' argument to the endpoint specified by the 'endpoint' argument.
|
|
|
|
The 'endpoint' argument is a string consisting of two parts as follows:
|
|
'transport'`://`'address'. The 'transport' part specifies the underlying
|
|
transport protocol to use. The meaning of the 'address' part is specific to
|
|
the underlying transport protocol selected.
|
|
|
|
The following transports are defined:
|
|
|
|
'inproc':: local in-process (inter-thread) communication transport, see linkzmq:zmq_inproc[7]
|
|
'ipc':: local inter-process communication transport, see linkzmq:zmq_ipc[7]
|
|
'tcp':: unicast transport using TCP, see linkzmq:zmq_tcp[7]
|
|
'pgm', 'epgm':: reliable multicast transport using PGM, see linkzmq:zmq_pgm[7]
|
|
|
|
With the exception of 'ZMQ_PAIR' sockets, a single socket may be connected to
|
|
multiple endpoints using _zmq_connect()_, while simultaneously accepting
|
|
incoming connections from multiple endpoints bound to the socket using
|
|
_zmq_bind()_. Refer to linkzmq:zmq_socket[3] for a description of the exact
|
|
semantics involved when connecting or binding a socket to multiple endpoints.
|
|
|
|
NOTE: The connection will not be performed immediately but as needed by 0MQ.
|
|
Thus a successful invocation of _zmq_connect()_ does not indicate that a
|
|
physical connection was or can actually be established.
|
|
|
|
|
|
RETURN VALUE
|
|
------------
|
|
The _zmq_connect()_ function shall return zero if successful. Otherwise it
|
|
shall return `-1` and set '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.
|
|
*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
|
|
-------
|
|
.Connecting a subscriber socket to an in-process and a TCP transport
|
|
----
|
|
/* Create a ZMQ_SUB socket */
|
|
void *socket = zmq_socket (context, ZMQ_SUB);
|
|
assert (socket);
|
|
/* Connect it to an in-process transport with the address 'my_publisher' */
|
|
int rc = zmq_connect (socket, "inproc://my_publisher");
|
|
assert (rc == 0);
|
|
/* Connect it to the host server001, port 5555 using a TCP transport */
|
|
rc = zmq_connect (socket, "tcp://server001:5555");
|
|
assert (rc == 0);
|
|
----
|
|
|
|
|
|
SEE ALSO
|
|
--------
|
|
linkzmq:zmq_bind[3]
|
|
linkzmq:zmq_socket[3]
|
|
linkzmq:zmq[7]
|
|
|
|
|
|
AUTHORS
|
|
-------
|
|
The 0MQ documentation was written by Martin Sustrik <sustrik@250bpm.com> and
|
|
Martin Lucina <mato@kotelna.sk>.
|