mirror of
https://github.com/zeromq/libzmq.git
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107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
/*
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Copyright (c) 2007-2015 Contributors as noted in the AUTHORS file
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This file is part of 0MQ.
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0MQ 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 as published by
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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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0MQ is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public 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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void *ctx = zmq_ctx_new ();
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assert (ctx);
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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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int rc = zmq_bind (pub, "inproc://soname");
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assert (rc == 0);
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// set pub socket options
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int wait = 1;
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rc = zmq_setsockopt (pub, ZMQ_XPUB_NODROP, &wait, 4);
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assert (rc == 0);
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int hwm = 2000;
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rc = zmq_setsockopt (pub, ZMQ_SNDHWM, &hwm, 4);
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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, "inproc://soname");
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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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int hwmlimit = hwm - 1;
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int send_count = 0;
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// Send an empty message
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for (int i = 0; i < hwmlimit; i++) {
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rc = zmq_send (pub, NULL, 0, 0);
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assert (rc == 0);
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send_count++;
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}
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int recv_count = 0;
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do {
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// Receive the message in the subscriber
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rc = zmq_recv (sub, NULL, 0, ZMQ_DONTWAIT);
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if (rc == -1)
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assert (errno == EAGAIN);
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else {
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assert (rc == 0);
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recv_count++;
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}
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}
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while (rc == 0);
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assert (send_count == recv_count);
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// Now test real blocking behavior
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// Set a timeout, default is infinite
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int timeout = 0;
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rc = zmq_setsockopt (pub, ZMQ_SNDTIMEO, &timeout, 4);
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assert (rc == 0);
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send_count = 0;
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recv_count = 0;
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hwmlimit = hwm;
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// Send an empty message until we get an error, which must be EAGAIN
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while (zmq_send (pub, "", 0, 0) == 0)
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send_count++;
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assert (errno == EAGAIN);
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while (zmq_recv (sub, NULL, 0, ZMQ_DONTWAIT) == 0)
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recv_count++;
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assert (send_count == recv_count);
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// Clean up.
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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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