[MAN] zmq_msg_more

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ZMQ_MSG_MORE

Section: 0MQ Manual (3)
Updated: 07/10/2019
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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. This method can safely be called after zmq_msg_close(). This method is identical to zmq_msg_get() with an argument of ZMQ_MORE.  

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 0MQ 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_msg_recv (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 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[].

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Index

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUE

EXAMPLE

SEE ALSO

AUTHORS

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Time: 04:45:44 GMT, September 16, 2022