mirror of
https://github.com/zeromq/libzmq.git
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304 lines
8.4 KiB
C++
304 lines
8.4 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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const char *bind_address = 0;
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const char *connect_address = 0;
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void test_push_round_robin_out (void *ctx)
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{
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void *push = zmq_socket (ctx, ZMQ_PUSH);
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assert (push);
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int rc = zmq_bind (push, bind_address);
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assert (rc == 0);
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const size_t services = 5;
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void *pulls [services];
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for (size_t peer = 0; peer < services; ++peer) {
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pulls [peer] = zmq_socket (ctx, ZMQ_PULL);
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assert (pulls [peer]);
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int timeout = 250;
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rc = zmq_setsockopt (pulls [peer], ZMQ_RCVTIMEO, &timeout, sizeof (int));
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assert (rc == 0);
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rc = zmq_connect (pulls [peer], connect_address);
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assert (rc == 0);
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}
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// Wait for connections.
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rc = zmq_poll (0, 0, 100);
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assert (rc == 0);
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// Send 2N messages
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for (size_t peer = 0; peer < services; ++peer)
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s_send_seq (push, "ABC", SEQ_END);
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for (size_t peer = 0; peer < services; ++peer)
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s_send_seq (push, "DEF", SEQ_END);
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// Expect every PULL got one of each
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for (size_t peer = 0; peer < services; ++peer) {
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s_recv_seq (pulls [peer], "ABC", SEQ_END);
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s_recv_seq (pulls [peer], "DEF", SEQ_END);
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}
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close_zero_linger (push);
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for (size_t peer = 0; peer < services; ++peer)
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close_zero_linger (pulls [peer]);
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// Wait for disconnects.
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rc = zmq_poll (0, 0, 100);
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assert (rc == 0);
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}
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void test_pull_fair_queue_in (void *ctx)
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{
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void *pull = zmq_socket (ctx, ZMQ_PULL);
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assert (pull);
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int rc = zmq_bind (pull, bind_address);
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assert (rc == 0);
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const size_t services = 5;
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void *pushs [services];
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for (size_t peer = 0; peer < services; ++peer)
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{
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pushs [peer] = zmq_socket (ctx, ZMQ_PUSH);
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assert (pushs [peer]);
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rc = zmq_connect (pushs [peer], connect_address);
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assert (rc == 0);
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}
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// Wait for connections.
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rc = zmq_poll (0, 0, 100);
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assert (rc == 0);
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int first_half = 0;
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int second_half = 0;
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// Send 2N messages
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for (size_t peer = 0; peer < services; ++peer) {
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char *str = strdup("A");
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str [0] += peer;
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s_send_seq (pushs [peer], str, SEQ_END);
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first_half += str [0];
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str [0] += services;
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s_send_seq (pushs [peer], str, SEQ_END);
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second_half += str [0];
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free (str);
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}
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// Wait for data.
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rc = zmq_poll (0, 0, 100);
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assert (rc == 0);
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zmq_msg_t msg;
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rc = zmq_msg_init (&msg);
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assert (rc == 0);
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// Expect to pull one from each first
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for (size_t peer = 0; peer < services; ++peer) {
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rc = zmq_msg_recv (&msg, pull, 0);
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assert (rc == 2);
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const char *str = (const char *)zmq_msg_data (&msg);
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first_half -= str [0];
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}
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assert (first_half == 0);
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// And then get the second batch
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for (size_t peer = 0; peer < services; ++peer) {
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rc = zmq_msg_recv (&msg, pull, 0);
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assert (rc == 2);
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const char *str = (const char *)zmq_msg_data (&msg);
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second_half -= str [0];
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}
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assert (second_half == 0);
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rc = zmq_msg_close (&msg);
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assert (rc == 0);
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close_zero_linger (pull);
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for (size_t peer = 0; peer < services; ++peer)
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close_zero_linger (pushs [peer]);
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// Wait for disconnects.
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rc = zmq_poll (0, 0, 100);
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assert (rc == 0);
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}
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void test_push_block_on_send_no_peers (void *ctx)
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{
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void *sc = zmq_socket (ctx, ZMQ_PUSH);
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assert (sc);
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int timeout = 250;
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int rc = zmq_setsockopt (sc, ZMQ_SNDTIMEO, &timeout, sizeof (timeout));
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assert (rc == 0);
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rc = zmq_send (sc, 0, 0, ZMQ_DONTWAIT);
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assert (rc == -1);
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assert (errno == EAGAIN);
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rc = zmq_send (sc, 0, 0, 0);
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assert (rc == -1);
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assert (errno == EAGAIN);
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rc = zmq_close (sc);
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assert (rc == 0);
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}
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void test_destroy_queue_on_disconnect (void *ctx)
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{
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void *A = zmq_socket (ctx, ZMQ_PUSH);
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assert (A);
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int hwm = 1;
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int rc = zmq_setsockopt (A, ZMQ_SNDHWM, &hwm, sizeof (hwm));
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assert (rc == 0);
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rc = zmq_bind (A, bind_address);
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assert (rc == 0);
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void *B = zmq_socket (ctx, ZMQ_PULL);
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assert (B);
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rc = zmq_setsockopt (B, ZMQ_RCVHWM, &hwm, sizeof (hwm));
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assert (rc == 0);
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rc = zmq_connect (B, connect_address);
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assert (rc == 0);
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// Send two messages, one should be stuck in A's outgoing queue, the other
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// arrives at B.
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s_send_seq (A, "ABC", SEQ_END);
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s_send_seq (A, "DEF", SEQ_END);
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// Both queues should now be full, indicated by A blocking on send.
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rc = zmq_send (A, 0, 0, ZMQ_DONTWAIT);
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assert (rc == -1);
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assert (errno == EAGAIN);
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rc = zmq_disconnect (B, connect_address);
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assert (rc == 0);
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// Disconnect may take time and need command processing.
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zmq_pollitem_t poller [2] = { { A, 0, 0, 0 }, { B, 0, 0, 0 } };
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rc = zmq_poll (poller, 2, 100);
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assert (rc == 0);
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rc = zmq_poll (poller, 2, 100);
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assert (rc == 0);
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zmq_msg_t msg;
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rc = zmq_msg_init (&msg);
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assert (rc == 0);
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// Can't receive old data on B.
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rc = zmq_msg_recv (&msg, B, ZMQ_DONTWAIT);
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assert (rc == -1);
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assert (errno == EAGAIN);
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// Sending fails.
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rc = zmq_send (A, 0, 0, ZMQ_DONTWAIT);
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assert (rc == -1);
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assert (errno == EAGAIN);
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// Reconnect B
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rc = zmq_connect (B, connect_address);
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assert (rc == 0);
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// Still can't receive old data on B.
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rc = zmq_msg_recv (&msg, B, ZMQ_DONTWAIT);
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assert (rc == -1);
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assert (errno == EAGAIN);
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// two messages should be sendable before the queues are filled up.
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s_send_seq (A, "ABC", SEQ_END);
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s_send_seq (A, "DEF", SEQ_END);
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rc = zmq_send (A, 0, 0, ZMQ_DONTWAIT);
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assert (rc == -1);
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assert (errno == EAGAIN);
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rc = zmq_msg_close (&msg);
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assert (rc == 0);
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close_zero_linger (A);
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close_zero_linger (B);
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// Wait for disconnects.
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rc = zmq_poll (0, 0, 100);
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assert (rc == 0);
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}
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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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const char *binds [] = { "inproc://a", "tcp://127.0.0.1:5555" };
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const char *connects [] = { "inproc://a", "tcp://localhost:5555" };
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for (int transport = 0; transport < 2; ++transport) {
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bind_address = binds [transport];
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connect_address = connects [transport];
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// PUSH: SHALL route outgoing messages to connected peers using a
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// round-robin strategy.
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test_push_round_robin_out (ctx);
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// PULL: SHALL receive incoming messages from its peers using a fair-queuing
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// strategy.
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test_pull_fair_queue_in (ctx);
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// PUSH: SHALL block on sending, or return a suitable error, when it has no
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// available peers.
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test_push_block_on_send_no_peers (ctx);
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// PUSH and PULL: SHALL create this queue when a peer connects to it. If
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// this peer disconnects, the socket SHALL destroy its queue and SHALL
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// discard any messages it contains.
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// *** Test disabled until libzmq does this properly ***
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// test_destroy_queue_on_disconnect (ctx);
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}
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int 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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