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 ALSO¶
zmq_msg_init_size(3) zmq_msg_init_data(3) zmq_msg_close(3)
zmq_msg_data(3) zmq_msg_size(3) zmq(7)
AUTHORS¶
This manual page was written by the 0MQ community.