ZMQ_MSG_INIT(3) 0MQ Manual ZMQ_MSG_INIT(3)NAME
zmq_msg_init - initialise empty 0MQ message
SYNOPSIS
int zmq_msg_init (zmq_msg_t *msg);
DESCRIPTION
The zmq_msg_init() function shall initialise the message object
referenced by msg to represent an empty message. This function is most
useful when called before receiving a message with zmq_recv().
Caution
Never access zmq_msg_t members directly, instead always use the
zmq_msg family of functions.
Caution
The functions zmq_msg_init(), zmq_msg_init_data() and
zmq_msg_init_size() are mutually exclusive. Never initialize the
same zmq_msg_t twice.
RETURN VALUE
The zmq_msg_init() function shall return zero if successful. Otherwise
it shall return -1 and set errno to one of the values defined below.
ERRORS
No errors are defined.
EXAMPLE
Receiving a message from a socket.
zmq_msg_t msg;
rc = zmq_msg_init (&msg);
assert (rc == 0);
rc = zmq_recv (socket, &msg, 0);
assert (rc == 0);
SEE ALSOzmq_msg_init_size(3)zmq_msg_init_data(3)zmq_msg_close(3)zmq_msg_data(3)zmq_msg_size(3)zmq(7)AUTHORS
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0MQ 4.0.1 03/10/2014 ZMQ_MSG_INIT(3)