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ZMQ_UNBIND

Section: 0MQ Manual (3)
Updated: 12/31/2016
Index Return to Main Contents
 

NAME

zmq_unbind - Stop accepting connections on a socket  

SYNOPSIS

int zmq_unbind (void *socket, const char *endpoint);  

DESCRIPTION

The zmq_unbind() function shall unbind a socket specified by the socket argument from the endpoint specified by the endpoint argument.

The endpoint argument is as described in zmq_bind(3)  

Unbinding wild-card address from a socket

When wild-card * endpoint (described in zmq_tcp(7), zmq_ipc(7) and zmq_vmci(7)) was used in zmq_bind(), the caller should use real endpoint obtained from the ZMQ_LAST_ENDPOINT socket option to unbind this endpoint from a socket.  

RETURN VALUE

The zmq_unbind() 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.

ETERM

The 0MQ context associated with the specified socket was terminated.

ENOTSOCK

The provided socket was invalid.

ENOENT

The endpoint supplied was not previously bound.
 

EXAMPLES

Unbind a subscriber socket from a TCP transport.

/* Create a ZMQ_SUB socket */
void *socket = zmq_socket (context, ZMQ_SUB);
assert (socket);
/* Connect it to the host server001, port 5555 using a TCP transport */
rc = zmq_bind (socket, "tcp://127.0.0.1:5555");
assert (rc == 0);
/* Disconnect from the previously connected endpoint */
rc = zmq_unbind (socket, "tcp://127.0.0.1:5555");
assert (rc == 0);

Unbind wild-card * binded socket.

/* Create a ZMQ_SUB socket */
void *socket = zmq_socket (context, ZMQ_SUB);
assert (socket);
/* Bind it to the system-assigned ephemeral port using a TCP transport */
rc = zmq_bind (socket, "tcp://127.0.0.1:*");
assert (rc == 0);
/* Obtain real endpoint */
const size_t buf_size = 32;
char buf[buf_size];
rc = zmq_getsockopt (socket, ZMQ_LAST_ENDPOINT, buf, (size_t *)&buf_size);
assert (rc == 0);
/* Unbind socket by real endpoint */
rc = zmq_unbind (socket, buf);
assert (rc == 0);

 

SEE ALSO

zmq_bind(3) zmq_socket(3) zmq(7)  

AUTHORS

This page was written by the 0MQ community. To make a change please read the 0MQ Contribution Policy at m[blue]http://www.zeromq.org/docs:contributingm[].


 

Index

NAME
SYNOPSIS
DESCRIPTION
Unbinding wild-card address from a socket
RETURN VALUE
ERRORS
EXAMPLES
SEE ALSO
AUTHORS





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