zmq_msg_init(3) - Linux man page
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.
- Caution
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 0MQ manual page was written by Martin Sustrik <sustrik@250bpm.com [1] > and Martin Lucina <mato@kotelna.sk [2] >.