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/*
Copyright (c) 2009-2011 250bpm s.r.o.
Copyright (c) 2007-2011 iMatix Corporation
Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file
This file is part of 0MQ.
0MQ is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
0MQ is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <assert.h>
#include "../include/zmq.h"
#include "../include/zmq_utils.h"
int main (int argc, char *argv [])
{
void *ctx = zmq_init (1);
assert (ctx);
// First, create an intermediate device.
void *xpub = zmq_socket (ctx, ZMQ_XPUB);
assert (xpub);
int rc = zmq_bind (xpub, "tcp://127.0.0.1:5560");
assert (rc == 0);
void *xsub = zmq_socket (ctx, ZMQ_XSUB);
assert (xsub);
rc = zmq_bind (xsub, "tcp://127.0.0.1:5561");
assert (rc == 0);
// Create a publisher.
void *pub = zmq_socket (ctx, ZMQ_PUB);
assert (pub);
rc = zmq_connect (pub, "tcp://127.0.0.1:5561");
assert (rc == 0);
// Create a subscriber.
void *sub = zmq_socket (ctx, ZMQ_SUB);
assert (sub);
rc = zmq_connect (sub, "tcp://127.0.0.1:5560");
assert (rc == 0);
// Subscribe for all messages.
rc = zmq_setsockopt (sub, ZMQ_SUBSCRIBE, "", 0);
assert (rc == 0);
// Pass the subscription upstream through the device.
char buff [32];
rc = zmq_recv (xpub, buff, sizeof (buff), 0);
assert (rc >= 0);
rc = zmq_send (xsub, buff, rc, 0);
assert (rc >= 0);
// Wait a bit till the subscription gets to the publisher.
zmq_sleep (1);
// Send an empty message.
rc = zmq_send (pub, NULL, 0, 0);
assert (rc == 0);
// Pass the message downstream through the device.
rc = zmq_recv (xsub, buff, sizeof (buff), 0);
assert (rc >= 0);
rc = zmq_send (xpub, buff, rc, 0);
assert (rc >= 0);
// Receive the message in the subscriber.
rc = zmq_recv (sub, buff, sizeof (buff), 0);
assert (rc == 0);
// Clean up.
rc = zmq_close (xpub);
assert (rc == 0);
rc = zmq_close (xsub);
assert (rc == 0);
rc = zmq_close (pub);
assert (rc == 0);
rc = zmq_close (sub);
assert (rc == 0);
rc = zmq_term (ctx);
assert (rc == 0);
return 0 ;
}
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