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zmq_connect

man page of zmq_connect

zmq_connect: connect a socket

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 zmq_inproc(7) ipc local inter-process communication transport, see zmq_ipc(7) tcp unicast transport using TCP, see zmq_tcp(7) pgm, epgm reliable multicast transport using PGM, see 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 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

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
zmq_bind(3) zmq_socket(3) zmq(7)
AUTHORS
This 0MQ manual page was written by Martin Sustrik <sustrik@250bpm.com[1]> and Martin Lucina <mato@kotelna.sk[2]>.

NOTES

1. sustrik@250bpm.com mailto:sustrik@250bpm.com 2. mato@kotelna.sk mailto:mato@kotelna.sk ZMQ_CONNECT(3)
 
 
 

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