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.