/* Copyright (c) 2007-2015 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 . */ #include "testutil.hpp" const char *bind_address = 0; const char *connect_address = 0; void test_round_robin_out (void *ctx) { void *dealer = zmq_socket (ctx, ZMQ_DEALER); assert (dealer); int rc = zmq_bind (dealer, bind_address); assert (rc == 0); const size_t services = 5; void *rep [services]; for (size_t peer = 0; peer < services; ++peer) { rep [peer] = zmq_socket (ctx, ZMQ_REP); assert (rep [peer]); int timeout = 250; rc = zmq_setsockopt (rep [peer], ZMQ_RCVTIMEO, &timeout, sizeof (int)); assert (rc == 0); rc = zmq_connect (rep [peer], connect_address); assert (rc == 0); } // Wait for connections. rc = zmq_poll (0, 0, 100); assert (rc == 0); // Send all requests for (size_t i = 0; i < services; ++i) s_send_seq (dealer, 0, "ABC", SEQ_END); // Expect every REP got one message zmq_msg_t msg; zmq_msg_init (&msg); for (size_t peer = 0; peer < services; ++peer) s_recv_seq (rep [peer], "ABC", SEQ_END); rc = zmq_msg_close (&msg); assert (rc == 0); close_zero_linger (dealer); for (size_t peer = 0; peer < services; ++peer) close_zero_linger (rep [peer]); // Wait for disconnects. rc = zmq_poll (0, 0, 100); assert (rc == 0); } void test_fair_queue_in (void *ctx) { void *receiver = zmq_socket (ctx, ZMQ_DEALER); assert (receiver); int timeout = 250; int rc = zmq_setsockopt (receiver, ZMQ_RCVTIMEO, &timeout, sizeof (int)); assert (rc == 0); rc = zmq_bind (receiver, bind_address); assert (rc == 0); const size_t services = 5; void *senders [services]; for (size_t peer = 0; peer < services; ++peer) { senders [peer] = zmq_socket (ctx, ZMQ_DEALER); assert (senders [peer]); rc = zmq_setsockopt (senders [peer], ZMQ_RCVTIMEO, &timeout, sizeof (int)); assert (rc == 0); rc = zmq_connect (senders [peer], connect_address); assert (rc == 0); } zmq_msg_t msg; rc = zmq_msg_init (&msg); assert (rc == 0); s_send_seq (senders [0], "A", SEQ_END); s_recv_seq (receiver, "A", SEQ_END); s_send_seq (senders [0], "A", SEQ_END); s_recv_seq (receiver, "A", SEQ_END); // send our requests for (size_t peer = 0; peer < services; ++peer) s_send_seq (senders [peer], "B", SEQ_END); // Wait for data. rc = zmq_poll (0, 0, 50); assert (rc == 0); // handle the requests for (size_t peer = 0; peer < services; ++peer) s_recv_seq (receiver, "B", SEQ_END); rc = zmq_msg_close (&msg); assert (rc == 0); close_zero_linger (receiver); for (size_t peer = 0; peer < services; ++peer) close_zero_linger (senders [peer]); // Wait for disconnects. rc = zmq_poll (0, 0, 100); assert (rc == 0); } void test_destroy_queue_on_disconnect (void *ctx) { void *A = zmq_socket (ctx, ZMQ_DEALER); assert (A); int rc = zmq_bind (A, bind_address); assert (rc == 0); void *B = zmq_socket (ctx, ZMQ_DEALER); assert (B); rc = zmq_connect (B, connect_address); assert (rc == 0); // Send a message in both directions s_send_seq (A, "ABC", SEQ_END); s_send_seq (B, "DEF", SEQ_END); rc = zmq_disconnect (B, connect_address); assert (rc == 0); // Disconnect may take time and need command processing. zmq_pollitem_t poller [2] = { { A, 0, 0, 0 }, { B, 0, 0, 0 } }; rc = zmq_poll (poller, 2, 100); assert (rc == 0); rc = zmq_poll (poller, 2, 100); assert (rc == 0); // No messages should be available, sending should fail. zmq_msg_t msg; zmq_msg_init (&msg); rc = zmq_send (A, 0, 0, ZMQ_DONTWAIT); assert (rc == -1); assert (errno == EAGAIN); rc = zmq_msg_recv (&msg, A, ZMQ_DONTWAIT); assert (rc == -1); assert (errno == EAGAIN); // After a reconnect of B, the messages should still be gone rc = zmq_connect (B, connect_address); assert (rc == 0); rc = zmq_msg_recv (&msg, A, ZMQ_DONTWAIT); assert (rc == -1); assert (errno == EAGAIN); rc = zmq_msg_recv (&msg, B, ZMQ_DONTWAIT); assert (rc == -1); assert (errno == EAGAIN); rc = zmq_msg_close (&msg); assert (rc == 0); close_zero_linger (A); close_zero_linger (B); // Wait for disconnects. rc = zmq_poll (0, 0, 100); assert (rc == 0); } void test_block_on_send_no_peers (void *ctx) { void *sc = zmq_socket (ctx, ZMQ_DEALER); assert (sc); int timeout = 250; int rc = zmq_setsockopt (sc, ZMQ_SNDTIMEO, &timeout, sizeof (timeout)); assert (rc == 0); rc = zmq_send (sc, 0, 0, ZMQ_DONTWAIT); assert (rc == -1); assert (errno == EAGAIN); rc = zmq_send (sc, 0, 0, 0); assert (rc == -1); assert (errno == EAGAIN); rc = zmq_close (sc); assert (rc == 0); } int main (void) { setup_test_environment(); void *ctx = zmq_ctx_new (); assert (ctx); const char *binds [] = { "inproc://a", "tcp://127.0.0.1:5555" }; const char *connects [] = { "inproc://a", "tcp://localhost:5555" }; for (int transports = 0; transports < 2; ++transports) { bind_address = binds [transports]; connect_address = connects [transports]; // SHALL route outgoing messages to available peers using a round-robin // strategy. test_round_robin_out (ctx); // SHALL receive incoming messages from its peers using a fair-queuing // strategy. test_fair_queue_in (ctx); // SHALL block on sending, or return a suitable error, when it has no connected peers. test_block_on_send_no_peers (ctx); // SHALL create a double queue when a peer connects to it. If this peer // disconnects, the DEALER socket SHALL destroy its double queue and SHALL // discard any messages it contains. // *** Test disabled until libzmq does this properly *** // test_destroy_queue_on_disconnect (ctx); } int rc = zmq_ctx_term (ctx); assert (rc == 0); return 0 ; }