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https://github.com/zeromq/libzmq.git
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477cc1cb12
Solution: - Add checks for **poller_p_ to ensure that we do not segfault when either it or the value within it are NULL - Add tests for the above and increase error state coverage
174 lines
5.2 KiB
C++
174 lines
5.2 KiB
C++
/*
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Copyright (c) 2007-2016 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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void *ctx = zmq_ctx_new ();
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assert (ctx);
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// Create few sockets
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void *vent = zmq_socket (ctx, ZMQ_PUSH);
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assert (vent);
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int rc = zmq_bind (vent, "tcp://127.0.0.1:55556");
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assert (rc == 0);
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void *sink = zmq_socket (ctx, ZMQ_PULL);
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assert (sink);
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rc = zmq_connect (sink, "tcp://127.0.0.1:55556");
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assert (rc == 0);
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void *bowl = zmq_socket (ctx, ZMQ_PULL);
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assert (bowl);
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#if defined(ZMQ_SERVER) && defined(ZMQ_CLIENT)
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void *server = zmq_socket (ctx, ZMQ_SERVER);
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assert (server);
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rc = zmq_bind (server, "tcp://127.0.0.1:55557");
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assert (rc == 0);
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void *client = zmq_socket (ctx, ZMQ_CLIENT);
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assert (client);
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#endif
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// Set up poller
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void* poller = zmq_poller_new ();
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zmq_poller_event_t event;
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// waiting on poller with no registered sockets should report error
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rc = zmq_poller_wait(poller, &event, 0);
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assert (rc == -1);
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assert (errno == ETIMEDOUT);
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// register sink
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rc = zmq_poller_add (poller, sink, sink, ZMQ_POLLIN);
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assert (rc == 0);
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// Send a message
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char data[1] = {'H'};
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rc = zmq_send_const (vent, data, 1, 0);
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assert (rc == 1);
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// We expect a message only on the sink
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rc = zmq_poller_wait (poller, &event, -1);
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assert (rc == 0);
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assert (event.socket == sink);
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assert (event.user_data == sink);
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rc = zmq_recv (sink, data, 1, 0);
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assert (rc == 1);
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// We expect timed out
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rc = zmq_poller_wait (poller, &event, 0);
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assert (rc == -1);
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assert (errno == ETIMEDOUT);
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// Stop polling sink
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rc = zmq_poller_remove (poller, sink);
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assert (rc == 0);
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// Check we can poll an FD
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rc = zmq_connect (bowl, "tcp://127.0.0.1:55556");
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assert (rc == 0);
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#if defined _WIN32
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SOCKET fd;
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size_t fd_size = sizeof (SOCKET);
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#else
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int fd;
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size_t fd_size = sizeof (int);
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#endif
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rc = zmq_getsockopt (bowl, ZMQ_FD, &fd, &fd_size);
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assert (rc == 0);
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rc = zmq_poller_add_fd (poller, fd, bowl, ZMQ_POLLIN);
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assert (rc == 0);
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rc = zmq_poller_wait (poller, &event, 500);
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assert (rc == 0);
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assert (event.socket == NULL);
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assert (event.fd == fd);
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assert (event.user_data == bowl);
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zmq_poller_remove_fd (poller, fd);
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#if defined(ZMQ_SERVER) && defined(ZMQ_CLIENT)
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// Polling on thread safe sockets
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rc = zmq_poller_add (poller, server, NULL, ZMQ_POLLIN);
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assert (rc == 0);
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rc = zmq_connect (client, "tcp://127.0.0.1:55557");
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assert (rc == 0);
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rc = zmq_send_const (client, data, 1, 0);
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assert (rc == 1);
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rc = zmq_poller_wait (poller, &event, 500);
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assert (rc == 0);
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assert (event.socket == server);
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assert (event.user_data == NULL);
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rc = zmq_recv (server, data, 1, 0);
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assert (rc == 1);
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// Polling on pollout
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rc = zmq_poller_modify (poller, server, ZMQ_POLLOUT | ZMQ_POLLIN);
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assert (rc == 0);
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rc = zmq_poller_wait (poller, &event, 0);
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assert (rc == 0);
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assert (event.socket == server);
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assert (event.user_data == NULL);
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assert (event.events == ZMQ_POLLOUT);
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#endif
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// Destory sockets, poller and ctx
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rc = zmq_close (sink);
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assert (rc == 0);
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rc = zmq_close (vent);
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assert (rc == 0);
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rc = zmq_close (bowl);
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assert (rc == 0);
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#if defined(ZMQ_SERVER) && defined(ZMQ_CLIENT)
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rc = zmq_close (server);
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assert (rc == 0);
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rc = zmq_close (client);
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assert (rc == 0);
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#endif
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// Test error - null poller pointers
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rc = zmq_poller_destroy (NULL);
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assert (rc == -1 && errno == EFAULT);
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void *null_poller = NULL;
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rc = zmq_poller_destroy (&null_poller);
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assert (rc == -1 && errno == EFAULT);
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rc = zmq_poller_destroy (&poller);
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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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