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62 lines
1.4 KiB
Plaintext
62 lines
1.4 KiB
Plaintext
zmq_msg_routing_id(3)
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=====================
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NAME
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----
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zmq_msg_routing_id - return routing ID for message, if any
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SYNOPSIS
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--------
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*uint32_t zmq_msg_routing_id (zmq_msg_t '*message');*
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DESCRIPTION
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-----------
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The _zmq_msg_routing_id()_ function returns the routing ID for the message,
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if any. The routing ID is set on all messages received from a 'ZMQ_SERVER'
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socket. To send a message to a 'ZMQ_SERVER' socket you must set the routing
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ID of a connected 'ZMQ_CLIENT' peer. Routing IDs are transient.
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RETURN VALUE
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------------
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The _zmq_msg_routing_id()_ function shall return zero if there is no routing
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ID, otherwise it shall return an unsigned 32-bit integer greater than zero.
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EXAMPLE
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-------
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.Receiving a client message and routing ID
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----
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void *ctx = zmq_ctx_new ();
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assert (ctx);
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void *server = zmq_socket (ctx, ZMQ_SERVER);
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assert (server);
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int rc = zmq_bind (server, "tcp://127.0.0.1:8080");
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assert (rc == 0);
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zmq_msg_t message;
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rc = zmq_msg_init (&message);
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assert (rc == 0);
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// Receive a message from socket
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rc = zmq_msg_recv (server, &message, 0);
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assert (rc != -1);
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uint32_t routing_id = zmq_msg_routing_id (&message);
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assert (routing_id);
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----
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SEE ALSO
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--------
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linkzmq:zmq_msg_set_routing_id[3]
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AUTHORS
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-------
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This page was written by the 0MQ community. To make a change please
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read the 0MQ Contribution Policy at <http://www.zeromq.org/docs:contributing>.
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