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_msg_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(),
           zmq_msg_init_size() and zmq_msg_init_buffer() are mutually
           exclusive. Never initialise 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_msg_recv (socket, &msg, 0);
           assert (nbytes != -1);


SEE ALSO
       zmq_msg_init_size(3) zmq_msg_init_buffer(3) zmq_msg_init_data(3)
       zmq_msg_close(3) zmq_msg_data(3) zmq_msg_size(3) zmq(7)

AUTHORS
       This page was written by the 0MQ community. To make a change please
       read the 0MQ Contribution Policy at
       http://www.zeromq.org/docs:contributing.

0MQ 4.3.5                         10/23/2023                   ZMQ_MSG_INIT(3)