zmq_msg_more(3)

zmq_msg_more(3)

ØMQ Manual - ØMQ/3.2.6

Name

zmq_msg_more - indicate if there are more message parts to receive

Synopsis

int zmq_msg_more (zmq_msg_t *message);

Description

The zmq_msg_more() function indicates whether this is part of a multi-part message, and there are further parts to receive.

Return value

The zmq_msg_more() function shall return zero if this is the final part of a multi-part message, or the only part of a single-part message. It shall return 1 if there are further parts to receive.

Example

Receiving a multi-part message

zmq_msg_t part;
while (true) {
    //  Create an empty ØMQ message to hold the message part
    int rc = zmq_msg_init (&part);
    assert (rc == 0);
    //  Block until a message is available to be received from socket
    rc = zmq_recvmsg (socket, &part, 0);
    assert (rc != -1);
    if (zmq_msg_more (&part))
        fprintf (stderr, "more\n");
    else {
        fprintf (stderr, "end\n");
        break;
    }
    zmq_msg_close (part); }

See also

zmq_msg_get(3) zmq_msg_set(3) zmq_msg_init(3) zmq_msg_close(3) zmq(7)

Authors

This ØMQ manual page was written by Chuck Remes <moc.cam|semerc#moc.cam|semerc> and Pieter Hintjens <moc.xitami|hp#moc.xitami|hp>.