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110 lines
3.5 KiB
C++
110 lines
3.5 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 endpoint1[MAX_SOCKET_STRING];
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char endpoint2[MAX_SOCKET_STRING];
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void *ctx = zmq_ctx_new ();
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assert (ctx);
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// First, create an intermediate device
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void *xpub = zmq_socket (ctx, ZMQ_XPUB);
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assert (xpub);
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int rc = zmq_bind (xpub, "tcp://127.0.0.1:*");
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assert (rc == 0);
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rc = zmq_getsockopt (xpub, ZMQ_LAST_ENDPOINT, endpoint1, &len);
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assert (rc == 0);
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void *xsub = zmq_socket (ctx, ZMQ_XSUB);
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assert (xsub);
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rc = zmq_bind (xsub, "tcp://127.0.0.1:*");
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assert (rc == 0);
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len = MAX_SOCKET_STRING;
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rc = zmq_getsockopt (xsub, ZMQ_LAST_ENDPOINT, endpoint2, &len);
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assert (rc == 0);
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// Create a publisher
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void *pub = zmq_socket (ctx, ZMQ_PUB);
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assert (pub);
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rc = zmq_connect (pub, endpoint2);
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assert (rc == 0);
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// Create a subscriber
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void *sub = zmq_socket (ctx, ZMQ_SUB);
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assert (sub);
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rc = zmq_connect (sub, endpoint1);
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assert (rc == 0);
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// Subscribe for all messages.
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rc = zmq_setsockopt (sub, ZMQ_SUBSCRIBE, "", 0);
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assert (rc == 0);
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// Pass the subscription upstream through the device
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char buff[32];
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rc = zmq_recv (xpub, buff, sizeof (buff), 0);
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assert (rc >= 0);
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rc = zmq_send (xsub, buff, rc, 0);
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assert (rc >= 0);
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// Wait a bit till the subscription gets to the publisher
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msleep (SETTLE_TIME);
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// Send an empty message
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rc = zmq_send (pub, NULL, 0, 0);
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assert (rc == 0);
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// Pass the message downstream through the device
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rc = zmq_recv (xsub, buff, sizeof (buff), 0);
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assert (rc >= 0);
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rc = zmq_send (xpub, buff, rc, 0);
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assert (rc >= 0);
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// Receive the message in the subscriber
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rc = zmq_recv (sub, buff, sizeof (buff), 0);
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assert (rc == 0);
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// Clean up.
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rc = zmq_close (xpub);
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assert (rc == 0);
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rc = zmq_close (xsub);
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assert (rc == 0);
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rc = zmq_close (pub);
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assert (rc == 0);
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rc = zmq_close (sub);
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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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