mirror of
https://github.com/zeromq/libzmq.git
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132 lines
4.3 KiB
C++
132 lines
4.3 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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// This is a test for issue #1382. The server thread creates a SUB-PUSH
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// steerable proxy. The main process then sends messages to the SUB
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// but there is no pull on the other side, previously the proxy blocks
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// in writing to the backend, preventing the proxy from terminating
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void server_task (void *ctx_)
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{
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size_t len = MAX_SOCKET_STRING;
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char my_endpoint[MAX_SOCKET_STRING];
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// Frontend socket talks to main process
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void *frontend = zmq_socket (ctx_, ZMQ_SUB);
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assert (frontend);
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int rc = zmq_setsockopt (frontend, ZMQ_SUBSCRIBE, "", 0);
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assert (rc == 0);
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rc = zmq_bind (frontend, "tcp://127.0.0.1:*");
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assert (rc == 0);
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rc = zmq_getsockopt (frontend, ZMQ_LAST_ENDPOINT, my_endpoint, &len);
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assert (rc == 0);
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// Nice socket which is never read
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void *backend = zmq_socket (ctx_, ZMQ_PUSH);
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assert (backend);
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rc = zmq_bind (backend, "tcp://127.0.0.1:*");
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assert (rc == 0);
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// Control socket receives terminate command from main over inproc
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void *control = zmq_socket (ctx_, ZMQ_REQ);
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assert (control);
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rc = zmq_connect (control, "inproc://control");
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assert (rc == 0);
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rc = s_send (control, my_endpoint);
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assert (rc > 0);
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// Connect backend to frontend via a proxy
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rc = zmq_proxy_steerable (frontend, backend, NULL, control);
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assert (rc == 0);
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rc = zmq_close (frontend);
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assert (rc == 0);
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rc = zmq_close (backend);
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assert (rc == 0);
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rc = zmq_close (control);
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assert (rc == 0);
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}
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// The main thread simply starts a basic steerable proxy server, publishes some messages, and then
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// waits for the server to terminate.
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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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void *thread = zmq_threadstart (&server_task, ctx);
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// Control socket receives terminate command from main over inproc
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void *control = zmq_socket (ctx, ZMQ_REP);
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assert (control);
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int rc = zmq_bind (control, "inproc://control");
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assert (rc == 0);
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char *my_endpoint = s_recv (control);
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assert (my_endpoint);
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msleep (500); // Run for 500 ms
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// Start a secondary publisher which writes data to the SUB-PUSH server socket
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void *publisher = zmq_socket (ctx, ZMQ_PUB);
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assert (publisher);
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rc = zmq_connect (publisher, my_endpoint);
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assert (rc == 0);
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msleep (SETTLE_TIME);
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rc = zmq_send (publisher, "This is a test", 14, 0);
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assert (rc == 14);
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msleep (50);
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rc = zmq_send (publisher, "This is a test", 14, 0);
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assert (rc == 14);
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msleep (50);
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rc = zmq_send (publisher, "This is a test", 14, 0);
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assert (rc == 14);
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rc = zmq_send (control, "TERMINATE", 9, 0);
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assert (rc == 9);
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rc = zmq_close (publisher);
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assert (rc == 0);
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rc = zmq_close (control);
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assert (rc == 0);
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free (my_endpoint);
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zmq_threadclose (thread);
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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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