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+/*
+ Copyright (c) 2007-2013 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 <http://www.gnu.org/licenses/>.
+*/
+
+#include "testutil.hpp"
+
+int main (void)
+{
+ setup_test_environment();
+ int val;
+ int rc;
+ char buffer[16];
+ // TEST 1.
+ // First we're going to attempt to send messages to two
+ // pipes, one connected, the other not. We should see
+ // the PUSH load balancing to both pipes, and hence half
+ // of the messages getting queued, as connect() creates a
+ // pipe immediately.
+
+ void *context = zmq_ctx_new();
+ assert (context);
+ void *to = zmq_socket(context, ZMQ_PULL);
+ assert (to);
+
+ // Bind the one valid receiver
+ val = 0;
+ rc = zmq_setsockopt(to, ZMQ_LINGER, &val, sizeof(val));
+ assert (rc == 0);
+ rc = zmq_bind (to, "tcp://127.0.0.1:6555");
+ assert (rc == 0);
+
+ // Create a socket pushing to two endpoints - only 1 message should arrive.
+ void *from = zmq_socket (context, ZMQ_PUSH);
+ assert(from);
+
+ val = 0;
+ zmq_setsockopt (from, ZMQ_LINGER, &val, sizeof (val));
+ // This pipe will not connect
+ rc = zmq_connect (from, "tcp://localhost:5556");
+ assert (rc == 0);
+ // This pipe will
+ rc = zmq_connect (from, "tcp://localhost:6555");
+ assert (rc == 0);
+
+ // We send 10 messages, 5 should just get stuck in the queue
+ // for the not-yet-connected pipe
+ for (int i = 0; i < 10; ++i) {
+ rc = zmq_send (from, "Hello", 5, 0);
+ assert (rc == 5);
+ }
+
+ // We now consume from the connected pipe
+ // - we should see just 5
+ int timeout = 100;
+ rc = zmq_setsockopt (to, ZMQ_RCVTIMEO, &timeout, sizeof (int));
+ assert (rc == 0);
+
+ int seen = 0;
+ while (true) {
+ rc = zmq_recv (to, &buffer, sizeof (buffer), 0);
+ if (rc == -1)
+ break; // Break when we didn't get a message
+ seen++;
+ }
+ assert (seen == 5);
+
+ rc = zmq_close (from);
+ assert (rc == 0);
+
+ rc = zmq_close (to);
+ assert (rc == 0);
+
+ rc = zmq_ctx_term (context);
+ assert (rc == 0);
+
+ // TEST 2
+ // This time we will do the same thing, connect two pipes,
+ // one of which will succeed in connecting to a bound
+ // receiver, the other of which will fail. However, we will
+ // also set the delay attach on connect flag, which should
+ // cause the pipe attachment to be delayed until the connection
+ // succeeds.
+ context = zmq_ctx_new();
+
+ // Bind the valid socket
+ to = zmq_socket (context, ZMQ_PULL);
+ assert (to);
+ rc = zmq_bind (to, "tcp://127.0.0.1:5560");
+ assert (rc == 0);
+
+ val = 0;
+ rc = zmq_setsockopt (to, ZMQ_LINGER, &val, sizeof(val));
+ assert (rc == 0);
+
+ // Create a socket pushing to two endpoints - all messages should arrive.
+ from = zmq_socket (context, ZMQ_PUSH);
+ assert (from);
+
+ val = 0;
+ rc = zmq_setsockopt (from, ZMQ_LINGER, &val, sizeof(val));
+ assert (rc == 0);
+
+ // Set the key flag
+ val = 1;
+ rc = zmq_setsockopt (from, ZMQ_IMMEDIATE, &val, sizeof(val));
+ assert (rc == 0);
+
+ // Connect to the invalid socket
+ rc = zmq_connect (from, "tcp://localhost:5561");
+ assert (rc == 0);
+ // Connect to the valid socket
+ rc = zmq_connect (from, "tcp://localhost:5560");
+ assert (rc == 0);
+
+ // Send 10 messages, all should be routed to the connected pipe
+ for (int i = 0; i < 10; ++i) {
+ rc = zmq_send (from, "Hello", 5, 0);
+ assert (rc == 5);
+ }
+ rc = zmq_setsockopt (to, ZMQ_RCVTIMEO, &timeout, sizeof (int));
+ assert (rc == 0);
+
+ seen = 0;
+ while (true) {
+ rc = zmq_recv (to, &buffer, sizeof (buffer), 0);
+ if (rc == -1)
+ break; // Break when we didn't get a message
+ seen++;
+ }
+ assert (seen == 10);
+
+ rc = zmq_close (from);
+ assert (rc == 0);
+
+ rc = zmq_close (to);
+ assert (rc == 0);
+
+ rc = zmq_ctx_term (context);
+ assert (rc == 0);
+
+ // TEST 3
+ // This time we want to validate that the same blocking behaviour
+ // occurs with an existing connection that is broken. We will send
+ // messages to a connected pipe, disconnect and verify the messages
+ // block. Then we reconnect and verify messages flow again.
+ context = zmq_ctx_new ();
+
+ void *backend = zmq_socket (context, ZMQ_DEALER);
+ assert (backend);
+ void *frontend = zmq_socket (context, ZMQ_DEALER);
+ assert (frontend);
+ int zero = 0;
+ rc = zmq_setsockopt (backend, ZMQ_LINGER, &zero, sizeof (zero));
+ assert (rc == 0);
+ rc = zmq_setsockopt (frontend, ZMQ_LINGER, &zero, sizeof (zero));
+ assert (rc == 0);
+
+ // Frontend connects to backend using IMMEDIATE
+ int on = 1;
+ rc = zmq_setsockopt (frontend, ZMQ_IMMEDIATE, &on, sizeof (on));
+ assert (rc == 0);
+ rc = zmq_bind (backend, "tcp://127.0.0.1:5560");
+ assert (rc == 0);
+ rc = zmq_connect (frontend, "tcp://localhost:5560");
+ assert (rc == 0);
+
+ // Ping backend to frontend so we know when the connection is up
+ rc = zmq_send (backend, "Hello", 5, 0);
+ assert (rc == 5);
+ rc = zmq_recv (frontend, buffer, 255, 0);
+ assert (rc == 5);
+
+ // Send message from frontend to backend
+ rc = zmq_send (frontend, "Hello", 5, ZMQ_DONTWAIT);
+ assert (rc == 5);
+
+ rc = zmq_close (backend);
+ assert (rc == 0);
+
+ // Give time to process disconnect
+ msleep (SETTLE_TIME);
+
+ // Send a message, should fail
+ rc = zmq_send (frontend, "Hello", 5, ZMQ_DONTWAIT);
+ assert (rc == -1);
+
+ // Recreate backend socket
+ backend = zmq_socket (context, ZMQ_DEALER);
+ assert (backend);
+ rc = zmq_setsockopt (backend, ZMQ_LINGER, &zero, sizeof (zero));
+ assert (rc == 0);
+ rc = zmq_bind (backend, "tcp://127.0.0.1:5560");
+ assert (rc == 0);
+
+ // Ping backend to frontend so we know when the connection is up
+ rc = zmq_send (backend, "Hello", 5, 0);
+ assert (rc == 5);
+ rc = zmq_recv (frontend, buffer, 255, 0);
+ assert (rc == 5);
+
+ // After the reconnect, should succeed
+ rc = zmq_send (frontend, "Hello", 5, ZMQ_DONTWAIT);
+ assert (rc == 5);
+
+ rc = zmq_close (backend);
+ assert (rc == 0);
+
+ rc = zmq_close (frontend);
+ assert (rc == 0);
+
+ rc = zmq_ctx_term (context);
+ assert (rc == 0);
+}
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