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117 lines
3.9 KiB
C++
117 lines
3.9 KiB
C++
/*
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Copyright (c) 2007-2017 Contributors as noted in the AUTHORS file
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This file is part of libzmq, the ZeroMQ core engine in C++.
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libzmq is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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As a special exception, the Contributors give you permission to link
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this library with independent modules to produce an executable,
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regardless of the license terms of these independent modules, and to
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copy and distribute the resulting executable under terms of your choice,
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provided that you also meet, for each linked independent module, the
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terms and conditions of the license of that module. An independent
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module is a module which is not derived from or based on this library.
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If you modify this library, you must extend this exception to your
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version of the library.
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libzmq is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "testutil.hpp"
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int main (void)
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{
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setup_test_environment();
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size_t len = MAX_SOCKET_STRING;
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char my_endpoint[MAX_SOCKET_STRING];
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void *ctx = zmq_ctx_new ();
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assert (ctx);
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void *router = zmq_socket (ctx, ZMQ_ROUTER);
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assert (router);
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int rc = zmq_bind (router, "tcp://127.0.0.1:*");
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assert (rc == 0);
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rc = zmq_getsockopt (router, ZMQ_LAST_ENDPOINT, my_endpoint, &len);
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assert (rc == 0);
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// Enable the handover flag
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int handover = 1;
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rc = zmq_setsockopt (router, ZMQ_ROUTER_HANDOVER, &handover, sizeof (handover));
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assert (rc == 0);
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// Create dealer called "X" and connect it to our router
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void *dealer_one = zmq_socket (ctx, ZMQ_DEALER);
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assert (dealer_one);
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rc = zmq_setsockopt (dealer_one, ZMQ_ROUTING_ID, "X", 1);
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assert (rc == 0);
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rc = zmq_connect (dealer_one, my_endpoint);
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assert (rc == 0);
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// Get message from dealer to know when connection is ready
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char buffer [255];
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rc = zmq_send (dealer_one, "Hello", 5, 0);
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assert (rc == 5);
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rc = zmq_recv (router, buffer, 255, 0);
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assert (rc == 1);
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assert (buffer [0] == 'X');
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rc = zmq_recv (router, buffer, 255, 0);
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assert (rc == 5);
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// Now create a second dealer that uses the same identity
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void *dealer_two = zmq_socket (ctx, ZMQ_DEALER);
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assert (dealer_two);
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rc = zmq_setsockopt (dealer_two, ZMQ_ROUTING_ID, "X", 1);
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assert (rc == 0);
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rc = zmq_connect (dealer_two, my_endpoint);
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assert (rc == 0);
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// Get message from dealer to know when connection is ready
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rc = zmq_send (dealer_two, "Hello", 5, 0);
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assert (rc == 5);
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rc = zmq_recv (router, buffer, 255, 0);
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assert (rc == 1);
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assert (buffer [0] == 'X');
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rc = zmq_recv (router, buffer, 255, 0);
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assert (rc == 5);
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// Send a message to 'X' identity. This should be delivered
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// to the second dealer, instead of the first beccause of the handover.
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rc = zmq_send (router, "X", 1, ZMQ_SNDMORE);
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assert (rc == 1);
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rc = zmq_send (router, "Hello", 5, 0);
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assert (rc == 5);
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// Ensure that the first dealer doesn't receive the message
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// but the second one does
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rc = zmq_recv (dealer_one, buffer, 255, ZMQ_NOBLOCK);
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assert (rc == -1);
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rc = zmq_recv (dealer_two, buffer, 255, 0);
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assert (rc == 5);
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rc = zmq_close (router);
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assert (rc == 0);
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rc = zmq_close (dealer_one);
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assert (rc == 0);
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rc = zmq_close (dealer_two);
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assert (rc == 0);
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rc = zmq_ctx_term (ctx);
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assert (rc == 0);
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return 0 ;
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}
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