zmq_msg_init - initialise empty 0MQ message

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0MQ 4.3.5                                          03/31/2024                                    ZMQ_MSG_INIT(3)

       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.

       No errors are defined.

Receivingamessagefromasocket.

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

       zmq_msg_init - initialise empty 0MQ message

       The zmq_msg_init() function always returns zero.

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)

intzmq_msg_init(zmq_msg_t*msg);