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259 lines
7.0 KiB
C++
259 lines
7.0 KiB
C++
/*
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Copyright (c) 2012 Ian Barber
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Copyright (c) 2012 Other contributors as noted in the AUTHORS file
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This file is part of 0MQ.
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0MQ 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 as published by
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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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0MQ is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public 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 "../include/zmq.h"
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#include "../include/zmq_utils.h"
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <string>
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#undef NDEBUG
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#include <assert.h>
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int main (void)
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{
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fprintf (stderr, "test_connect_delay running...\n");
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int val;
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int rc;
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char buffer[16];
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int seen = 0;
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// TEST 1.
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// First we're going to attempt to send messages to two
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// pipes, one connected, the other not. We should see
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// the PUSH load balancing to both pipes, and hence half
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// of the messages getting queued, as connect() creates a
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// pipe immediately.
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void *context = zmq_ctx_new();
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assert (context);
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void *to = zmq_socket(context, ZMQ_PULL);
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assert (to);
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// Bind the one valid receiver
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val = 0;
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rc = zmq_setsockopt(to, ZMQ_LINGER, &val, sizeof(val));
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assert (rc == 0);
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rc = zmq_bind(to, "tcp://*:6555");
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assert (rc == 0);
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// Create a socket pushing to two endpoints - only 1 message should arrive.
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void *from = zmq_socket (context, ZMQ_PUSH);
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assert(from);
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val = 0;
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zmq_setsockopt (from, ZMQ_LINGER, &val, sizeof (val));
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// This pipe will not connect
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rc = zmq_connect (from, "tcp://localhost:5556");
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assert (rc == 0);
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// This pipe will
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rc = zmq_connect (from, "tcp://localhost:6555");
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assert (rc == 0);
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// We send 10 messages, 5 should just get stuck in the queue
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// for the not-yet-connected pipe
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for (int i = 0; i < 10; ++i)
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{
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std::string message("message ");
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message += ('0' + i);
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rc = zmq_send (from, message.data(), message.size(), 0);
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assert(rc >= 0);
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}
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// Sleep to allow the messages to be delivered
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zmq_sleep (1);
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// We now consume from the connected pipe
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// - we should see just 5
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seen = 0;
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for (int i = 0; i < 10; ++i)
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{
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memset (&buffer, 0, sizeof(buffer));
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rc = zmq_recv (to, &buffer, sizeof(buffer), ZMQ_DONTWAIT);
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if( rc == -1)
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break;
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seen++;
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}
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assert (seen == 5);
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rc = zmq_close (from);
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assert (rc == 0);
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rc = zmq_close (to);
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assert (rc == 0);
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rc = zmq_ctx_term(context);
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assert (rc == 0);
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// TEST 2
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// This time we will do the same thing, connect two pipes,
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// one of which will succeed in connecting to a bound
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// receiver, the other of which will fail. However, we will
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// also set the delay attach on connect flag, which should
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// cause the pipe attachment to be delayed until the connection
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// succeeds.
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context = zmq_ctx_new();
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// Bind the valid socket
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to = zmq_socket (context, ZMQ_PULL);
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assert (to);
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rc = zmq_bind (to, "tcp://*:5560");
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assert (rc == 0);
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val = 0;
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rc = zmq_setsockopt (to, ZMQ_LINGER, &val, sizeof(val));
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assert (rc == 0);
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// Create a socket pushing to two endpoints - all messages should arrive.
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from = zmq_socket (context, ZMQ_PUSH);
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assert (from);
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val = 0;
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rc = zmq_setsockopt (from, ZMQ_LINGER, &val, sizeof(val));
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assert (rc == 0);
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// Set the key flag
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val = 1;
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rc = zmq_setsockopt (from, ZMQ_DELAY_ATTACH_ON_CONNECT, &val, sizeof(val));
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assert (rc == 0);
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// Connect to the invalid socket
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rc = zmq_connect (from, "tcp://localhost:5561");
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assert (rc == 0);
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// Connect to the valid socket
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rc = zmq_connect (from, "tcp://localhost:5560");
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assert (rc == 0);
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// Send 10 messages, all should be routed to the connected pipe
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for (int i = 0; i < 10; ++i)
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{
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std::string message("message ");
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message += ('0' + i);
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rc = zmq_send (from, message.data(), message.size(), 0);
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assert (rc >= 0);
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}
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// Sleep to allow the messages to be delivered
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zmq_sleep (1);
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// Send 10 messages, all should arrive.
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seen = 0;
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for (int i = 0; i < 10; ++i)
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{
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memset(&buffer, 0, sizeof(buffer));
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rc = zmq_recv (to, &buffer, sizeof(buffer), ZMQ_DONTWAIT);
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// If there is a failed delivery, assert!
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assert (rc != -1);
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}
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rc = zmq_close (from);
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assert (rc == 0);
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rc = zmq_close (to);
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assert (rc == 0);
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rc = zmq_ctx_term(context);
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assert (rc == 0);
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// TEST 3
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// This time we want to validate that the same blocking behaviour
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// occurs with an existing connection that is broken. We will send
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// messaages to a connected pipe, disconnect and verify the messages
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// block. Then we reconnect and verify messages flow again.
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context = zmq_ctx_new();
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void *context2 = zmq_ctx_new();
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to = zmq_socket (context2, ZMQ_PULL);
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assert (to);
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rc = zmq_bind (to, "tcp://*:5560");
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assert (rc == 0);
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val = 0;
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rc = zmq_setsockopt (to, ZMQ_LINGER, &val, sizeof(val));
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assert (rc == 0);
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// Create a socket pushing
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from = zmq_socket (context, ZMQ_PUSH);
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assert (from);
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val = 0;
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rc = zmq_setsockopt (from, ZMQ_LINGER, &val, sizeof(val));
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assert (rc == 0);
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val = 1;
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rc = zmq_setsockopt (from, ZMQ_DELAY_ATTACH_ON_CONNECT, &val, sizeof(val));
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assert (rc == 0);
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// Connect to the valid socket socket
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rc = zmq_connect (from, "tcp://localhost:5560");
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assert (rc == 0);
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// Allow connections to stabilise
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zmq_sleep(1);
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// Send a message, should succeed
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std::string message("message ");
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rc = zmq_send (from, message.data(), message.size(), 0);
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assert (rc >= 0);
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rc = zmq_close (to);
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assert (rc == 0);
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rc = zmq_ctx_term(context2);
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assert (rc == 0);
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// Give time to process disconnect
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zmq_sleep(1);
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// Send a message, should fail
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rc = zmq_send (from, message.data(), message.size(), ZMQ_DONTWAIT);
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assert (rc == -1);
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context2 = zmq_ctx_new();
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to = zmq_socket (context2, ZMQ_PULL);
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assert (to);
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rc = zmq_bind (to, "tcp://*:5560");
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assert (rc == 0);
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val = 0;
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rc = zmq_setsockopt (to, ZMQ_LINGER, &val, sizeof(val));
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assert (rc == 0);
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// Allow connections to stabilise
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zmq_sleep(1);
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// After the reconnect, should succeed
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rc = zmq_send (from, message.data(), message.size(), 0);
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assert (rc >= 0);
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rc = zmq_close (to);
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assert (rc == 0);
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rc = zmq_close (from);
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assert (rc == 0);
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rc = zmq_ctx_term(context);
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assert (rc == 0);
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rc = zmq_ctx_term(context2);
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assert (rc == 0);
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}
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