Zmq_msg_init (3) Linux Manual Page

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 always returns zero.

Errors

No errors are defined.

Example

Receiving a message from a socket.

zmq_msg_t msg;
rc = zmq_msg_init(&msg);
assert(rc == 0);
int nbytes = zmq_recv(socket, &msg, 0);
assert(nbytes != -1);

Authors

This page was written by the 0MQ community. To make a change please read the 0MQ Contribution Policy at m[blue]http://www.zeromq.org/docs:contributingm[].

zmq_msg_init (3) Linux Manual Page