zmq_close - close 0MQ socket
int zmq_close (void *socket);
function shall destroy the socket referenced by the
argument. Any outstanding messages physically received from the
network but not yet received by the application with zmq_recv()
be discarded. The behaviour for discarding messages sent by the application
but not yet physically transferred to the network
depends on the value of the ZMQ_LINGER
socket option for the specified
must be called exactly once for each socket. If it is never
will block forever. If it is called multiple
times for the same socket or if socket
does not point to a socket, the
behaviour is undefined.
The default setting of ZMQ_LINGER
does not discard unsent messages; this
behaviour may cause the application to block when calling
. For details refer to zmq_setsockopt
function shall return zero if successful. Otherwise it
shall return -1 and set errno
to one of the values defined below.
The provided socket was NULL.
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