ZMQ_MSG_ROUTING_ID(3)

NAME
zmq_msg_routing_id - return routing ID for message, if any

SYNOPSIS
uint32_t zmq_msg_routing_id (zmq_msg_t *message);

DESCRIPTION
The zmq_msg_routing_id() function returns the routing ID for the message, if any. The routing ID is set on all messages received from a ZMQ_SERVER socket. To send a message to a ZMQ_SERVER socket you must set the routing ID of a connected ZMQ_CLIENT peer. Routing IDs are transient.

RETURN VALUE
The zmq_msg_routing_id() function shall return zero if there is no routing ID, otherwise it shall return an unsigned 32-bit integer greater than zero.

EXAMPLE

    void *ctx = zmq_ctx_new (); assert (ctx); void *server = zmq_socket (ctx, ZMQ_SERVER); assert (server); int rc = zmq_bind (server, "tcp://127.0.0.1:8080"); assert (rc == 0); zmq_msg_t message; rc = zmq_msg_init (&message); assert (rc == 0); // Receive a message from socket rc = zmq_msg_recv (server, &message, 0); assert (rc != -1); uint32_t routing_id = zmq_msg_routing_id (&message); assert (routing_id);

SEE ALSO
zmq_msg_set_routing_id(3)

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: http://www.zeromq.org/docs:contributing.