mirror of
https://github.com/zeromq/libzmq.git
synced 2024-12-25 22:30:51 +08:00
94 lines
2.9 KiB
Plaintext
94 lines
2.9 KiB
Plaintext
= zmq_unbind(3)
|
|
|
|
|
|
== 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.
|
|
|
|
Additionally the incoming message queue associated with the endpoint will be
|
|
discarded. This means that after unbinding an endpoint it is possible to
|
|
received messages originating from that same endpoint if they were already
|
|
present in the incoming message queue before unbinding.
|
|
|
|
The 'endpoint' argument is as described in xref:zmq_bind.adoc[zmq_bind]
|
|
|
|
Unbinding wild-card address from a socket
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
When wild-card `*` 'endpoint' (described in xref:zmq_tcp.adoc[zmq_tcp],
|
|
xref:zmq_ipc.adoc[zmq_ipc], xref:zmq_udp.adoc[zmq_udp] and xref:zmq_vmci.adoc[zmq_vmci]) 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);
|
|
----
|
|
|
|
== NOTE
|
|
|
|
Note that while the implementation is similar to _zmq_disconnect()_, the
|
|
semantics are different and the two functions should not be used
|
|
interchangeably. Bound sockets should be unbound, and connected sockets should
|
|
be disconnected.
|
|
|
|
== SEE ALSO
|
|
* xref:zmq_bind.adoc[zmq_bind]
|
|
* xref:zmq_socket.adoc[zmq_socket]
|
|
* xref:zmq.adoc[zmq]
|
|
|
|
|
|
== AUTHORS
|
|
This page was written by the 0MQ community. To make a change please
|
|
read the 0MQ Contribution Policy at <https://zeromq.org/how-to-contribute/>.
|