mirror of
https://github.com/zeromq/libzmq.git
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458 lines
15 KiB
C++
458 lines
15 KiB
C++
/*
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Copyright (c) 2007-2017 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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#include "testutil_unity.hpp"
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void setUp ()
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{
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setup_test_context ();
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}
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void tearDown ()
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{
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teardown_test_context ();
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}
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void test_basic ()
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{
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// Create a publisher
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void *pub = test_context_socket (ZMQ_XPUB);
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int manual = 1;
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TEST_ASSERT_SUCCESS_ERRNO (
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zmq_setsockopt (pub, ZMQ_XPUB_MANUAL, &manual, 4));
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TEST_ASSERT_SUCCESS_ERRNO (zmq_bind (pub, "inproc://soname"));
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// Create a subscriber
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void *sub = test_context_socket (ZMQ_XSUB);
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TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sub, "inproc://soname"));
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// Subscribe for A
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const char subscription[] = {1, 'A', 0};
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send_string_expect_success (sub, subscription, 0);
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// Receive subscriptions from subscriber
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recv_string_expect_success (pub, subscription, 0);
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// Subscribe socket for B instead
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TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_SUBSCRIBE, "B", 1));
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// Sending A message and B Message
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send_string_expect_success (pub, "A", 0);
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send_string_expect_success (pub, "B", 0);
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recv_string_expect_success (sub, "B", ZMQ_DONTWAIT);
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// Clean up.
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test_context_socket_close (pub);
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test_context_socket_close (sub);
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}
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void test_unsubscribe_manual ()
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{
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// Create a publisher
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void *pub = test_context_socket (ZMQ_XPUB);
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TEST_ASSERT_SUCCESS_ERRNO (zmq_bind (pub, "inproc://soname"));
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// set pub socket options
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int manual = 1;
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TEST_ASSERT_SUCCESS_ERRNO (
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zmq_setsockopt (pub, ZMQ_XPUB_MANUAL, &manual, sizeof (manual)));
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// Create a subscriber
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void *sub = test_context_socket (ZMQ_XSUB);
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TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sub, "inproc://soname"));
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// Subscribe for A
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const uint8_t subscription1[] = {1, 'A'};
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send_array_expect_success (sub, subscription1, 0);
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// Subscribe for B
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const uint8_t subscription2[] = {1, 'B'};
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send_array_expect_success (sub, subscription2, 0);
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char buffer[3];
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// Receive subscription "A" from subscriber
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recv_array_expect_success (pub, subscription1, 0);
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// Subscribe socket for XA instead
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TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_SUBSCRIBE, "XA", 2));
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// Receive subscription "B" from subscriber
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recv_array_expect_success (pub, subscription2, 0);
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// Subscribe socket for XB instead
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TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_SUBSCRIBE, "XB", 2));
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// Unsubscribe from A
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const uint8_t unsubscription1[2] = {0, 'A'};
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send_array_expect_success (sub, unsubscription1, 0);
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// Receive unsubscription "A" from subscriber
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recv_array_expect_success (pub, unsubscription1, 0);
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// Unsubscribe socket from XA instead
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TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_UNSUBSCRIBE, "XA", 2));
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// Sending messages XA, XB
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send_string_expect_success (pub, "XA", 0);
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send_string_expect_success (pub, "XB", 0);
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// Subscriber should receive XB only
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recv_string_expect_success (sub, "XB", ZMQ_DONTWAIT);
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// Close subscriber
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test_context_socket_close (sub);
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// Receive unsubscription "B"
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const char unsubscription2[2] = {0, 'B'};
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TEST_ASSERT_EQUAL_INT (
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sizeof unsubscription2,
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TEST_ASSERT_SUCCESS_ERRNO (zmq_recv (pub, buffer, sizeof buffer, 0)));
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TEST_ASSERT_EQUAL_INT8_ARRAY (unsubscription2, buffer,
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sizeof unsubscription2);
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// Unsubscribe socket from XB instead
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TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_UNSUBSCRIBE, "XB", 2));
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// Clean up.
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test_context_socket_close (pub);
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}
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void test_xpub_proxy_unsubscribe_on_disconnect ()
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{
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const uint8_t topic_buff[] = {"1"};
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const uint8_t payload_buff[] = {"X"};
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char my_endpoint_backend[MAX_SOCKET_STRING];
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char my_endpoint_frontend[MAX_SOCKET_STRING];
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int manual = 1;
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// proxy frontend
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void *xsub_proxy = test_context_socket (ZMQ_XSUB);
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bind_loopback_ipv4 (xsub_proxy, my_endpoint_frontend,
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sizeof my_endpoint_frontend);
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// proxy backend
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void *xpub_proxy = test_context_socket (ZMQ_XPUB);
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TEST_ASSERT_SUCCESS_ERRNO (
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zmq_setsockopt (xpub_proxy, ZMQ_XPUB_MANUAL, &manual, 4));
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bind_loopback_ipv4 (xpub_proxy, my_endpoint_backend,
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sizeof my_endpoint_backend);
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// publisher
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void *pub = test_context_socket (ZMQ_PUB);
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TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (pub, my_endpoint_frontend));
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// first subscriber subscribes
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void *sub1 = test_context_socket (ZMQ_SUB);
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TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sub1, my_endpoint_backend));
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TEST_ASSERT_SUCCESS_ERRNO (
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zmq_setsockopt (sub1, ZMQ_SUBSCRIBE, topic_buff, 1));
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// wait
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msleep (SETTLE_TIME);
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// proxy reroutes and confirms subscriptions
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const uint8_t subscription[2] = {1, *topic_buff};
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recv_array_expect_success (xpub_proxy, subscription, ZMQ_DONTWAIT);
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TEST_ASSERT_SUCCESS_ERRNO (
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zmq_setsockopt (xpub_proxy, ZMQ_SUBSCRIBE, topic_buff, 1));
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send_array_expect_success (xsub_proxy, subscription, 0);
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// second subscriber subscribes
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void *sub2 = test_context_socket (ZMQ_SUB);
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TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sub2, my_endpoint_backend));
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TEST_ASSERT_SUCCESS_ERRNO (
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zmq_setsockopt (sub2, ZMQ_SUBSCRIBE, topic_buff, 1));
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// wait
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msleep (SETTLE_TIME);
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// proxy reroutes
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recv_array_expect_success (xpub_proxy, subscription, ZMQ_DONTWAIT);
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TEST_ASSERT_SUCCESS_ERRNO (
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zmq_setsockopt (xpub_proxy, ZMQ_SUBSCRIBE, topic_buff, 1));
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send_array_expect_success (xsub_proxy, subscription, 0);
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// wait
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msleep (SETTLE_TIME);
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// let publisher send a msg
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send_array_expect_success (pub, topic_buff, ZMQ_SNDMORE);
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send_array_expect_success (pub, payload_buff, 0);
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// wait
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msleep (SETTLE_TIME);
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// proxy reroutes data messages to subscribers
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recv_array_expect_success (xsub_proxy, topic_buff, ZMQ_DONTWAIT);
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recv_array_expect_success (xsub_proxy, payload_buff, ZMQ_DONTWAIT);
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send_array_expect_success (xpub_proxy, topic_buff, ZMQ_SNDMORE);
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send_array_expect_success (xpub_proxy, payload_buff, 0);
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// wait
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msleep (SETTLE_TIME);
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// each subscriber should now get a message
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recv_array_expect_success (sub2, topic_buff, ZMQ_DONTWAIT);
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recv_array_expect_success (sub2, payload_buff, ZMQ_DONTWAIT);
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recv_array_expect_success (sub1, topic_buff, ZMQ_DONTWAIT);
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recv_array_expect_success (sub1, payload_buff, ZMQ_DONTWAIT);
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// Disconnect both subscribers
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test_context_socket_close (sub1);
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test_context_socket_close (sub2);
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// wait
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msleep (SETTLE_TIME);
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// unsubscribe messages are passed from proxy to publisher
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const uint8_t unsubscription[] = {0, *topic_buff};
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recv_array_expect_success (xpub_proxy, unsubscription, 0);
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TEST_ASSERT_SUCCESS_ERRNO (
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zmq_setsockopt (xpub_proxy, ZMQ_UNSUBSCRIBE, topic_buff, 1));
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send_array_expect_success (xsub_proxy, unsubscription, 0);
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// should receive another unsubscribe msg
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recv_array_expect_success (xpub_proxy, unsubscription, 0);
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TEST_ASSERT_SUCCESS_ERRNO (
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zmq_setsockopt (xpub_proxy, ZMQ_UNSUBSCRIBE, topic_buff, 1));
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send_array_expect_success (xsub_proxy, unsubscription, 0);
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// wait
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msleep (SETTLE_TIME);
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// let publisher send a msg
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send_array_expect_success (pub, topic_buff, ZMQ_SNDMORE);
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send_array_expect_success (pub, payload_buff, 0);
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// wait
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msleep (SETTLE_TIME);
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// nothing should come to the proxy
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char buffer[1];
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TEST_ASSERT_FAILURE_ERRNO (
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EAGAIN, zmq_recv (xsub_proxy, buffer, sizeof buffer, ZMQ_DONTWAIT));
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test_context_socket_close (pub);
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test_context_socket_close (xpub_proxy);
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test_context_socket_close (xsub_proxy);
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}
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void test_missing_subscriptions ()
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{
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const char *topic1 = "1";
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const char *topic2 = "2";
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const char *payload = "X";
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char my_endpoint_backend[MAX_SOCKET_STRING];
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char my_endpoint_frontend[MAX_SOCKET_STRING];
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int manual = 1;
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// proxy frontend
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void *xsub_proxy = test_context_socket (ZMQ_XSUB);
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bind_loopback_ipv4 (xsub_proxy, my_endpoint_frontend,
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sizeof my_endpoint_frontend);
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// proxy backend
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void *xpub_proxy = test_context_socket (ZMQ_XPUB);
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TEST_ASSERT_SUCCESS_ERRNO (
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zmq_setsockopt (xpub_proxy, ZMQ_XPUB_MANUAL, &manual, 4));
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bind_loopback_ipv4 (xpub_proxy, my_endpoint_backend,
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sizeof my_endpoint_backend);
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// publisher
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void *pub = test_context_socket (ZMQ_PUB);
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TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (pub, my_endpoint_frontend));
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// Here's the problem: because subscribers subscribe in quick succession,
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// the proxy is unable to confirm the first subscription before receiving
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// the second. This causes the first subscription to get lost.
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// first subscriber
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void *sub1 = test_context_socket (ZMQ_SUB);
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TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sub1, my_endpoint_backend));
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TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (sub1, ZMQ_SUBSCRIBE, topic1, 1));
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// second subscriber
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void *sub2 = test_context_socket (ZMQ_SUB);
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TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sub2, my_endpoint_backend));
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TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (sub2, ZMQ_SUBSCRIBE, topic2, 1));
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// wait
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msleep (SETTLE_TIME);
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// proxy now reroutes and confirms subscriptions
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const uint8_t subscription1[] = {1, static_cast<uint8_t> (topic1[0])};
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recv_array_expect_success (xpub_proxy, subscription1, ZMQ_DONTWAIT);
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TEST_ASSERT_SUCCESS_ERRNO (
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zmq_setsockopt (xpub_proxy, ZMQ_SUBSCRIBE, topic1, 1));
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send_array_expect_success (xsub_proxy, subscription1, 0);
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const uint8_t subscription2[] = {1, static_cast<uint8_t> (topic2[0])};
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recv_array_expect_success (xpub_proxy, subscription2, ZMQ_DONTWAIT);
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TEST_ASSERT_SUCCESS_ERRNO (
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zmq_setsockopt (xpub_proxy, ZMQ_SUBSCRIBE, topic2, 1));
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send_array_expect_success (xsub_proxy, subscription2, 0);
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// wait
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msleep (SETTLE_TIME);
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// let publisher send 2 msgs, each with its own topic_buff
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send_string_expect_success (pub, topic1, ZMQ_SNDMORE);
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send_string_expect_success (pub, payload, 0);
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send_string_expect_success (pub, topic2, ZMQ_SNDMORE);
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send_string_expect_success (pub, payload, 0);
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// wait
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msleep (SETTLE_TIME);
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// proxy reroutes data messages to subscribers
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recv_string_expect_success (xsub_proxy, topic1, ZMQ_DONTWAIT);
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recv_string_expect_success (xsub_proxy, payload, ZMQ_DONTWAIT);
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send_string_expect_success (xpub_proxy, topic1, ZMQ_SNDMORE);
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send_string_expect_success (xpub_proxy, payload, 0);
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recv_string_expect_success (xsub_proxy, topic2, ZMQ_DONTWAIT);
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recv_string_expect_success (xsub_proxy, payload, ZMQ_DONTWAIT);
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send_string_expect_success (xpub_proxy, topic2, ZMQ_SNDMORE);
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send_string_expect_success (xpub_proxy, payload, 0);
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// wait
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msleep (SETTLE_TIME);
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// each subscriber should now get a message
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recv_string_expect_success (sub2, topic2, ZMQ_DONTWAIT);
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recv_string_expect_success (sub2, payload, ZMQ_DONTWAIT);
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recv_string_expect_success (sub1, topic1, ZMQ_DONTWAIT);
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recv_string_expect_success (sub1, payload, ZMQ_DONTWAIT);
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// Clean up
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test_context_socket_close (sub1);
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test_context_socket_close (sub2);
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test_context_socket_close (pub);
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test_context_socket_close (xpub_proxy);
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test_context_socket_close (xsub_proxy);
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}
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void test_unsubscribe_cleanup ()
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{
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char my_endpoint[MAX_SOCKET_STRING];
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// Create a publisher
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void *pub = test_context_socket (ZMQ_XPUB);
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int manual = 1;
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TEST_ASSERT_SUCCESS_ERRNO (
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zmq_setsockopt (pub, ZMQ_XPUB_MANUAL, &manual, 4));
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bind_loopback_ipv4 (pub, my_endpoint, sizeof my_endpoint);
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// Create a subscriber
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void *sub = test_context_socket (ZMQ_XSUB);
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TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sub, my_endpoint));
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// Subscribe for A
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const uint8_t subscription1[2] = {1, 'A'};
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send_array_expect_success (sub, subscription1, 0);
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// Receive subscriptions from subscriber
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recv_array_expect_success (pub, subscription1, 0);
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TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_SUBSCRIBE, "XA", 2));
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// send 2 messages
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send_string_expect_success (pub, "XA", 0);
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send_string_expect_success (pub, "XB", 0);
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// receive the single message
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recv_string_expect_success (sub, "XA", 0);
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// should be nothing left in the queue
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char buffer[2];
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TEST_ASSERT_FAILURE_ERRNO (
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EAGAIN, zmq_recv (sub, buffer, sizeof buffer, ZMQ_DONTWAIT));
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// close the socket
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test_context_socket_close (sub);
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// closing the socket will result in an unsubscribe event
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const uint8_t unsubscription[2] = {0, 'A'};
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recv_array_expect_success (pub, unsubscription, 0);
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// this doesn't really do anything
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// there is no last_pipe set it will just fail silently
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TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_UNSUBSCRIBE, "XA", 2));
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// reconnect
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sub = test_context_socket (ZMQ_XSUB);
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TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sub, my_endpoint));
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// send a subscription for B
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const uint8_t subscription2[2] = {1, 'B'};
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send_array_expect_success (sub, subscription2, 0);
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// receive the subscription, overwrite it to XB
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recv_array_expect_success (pub, subscription2, 0);
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TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_SUBSCRIBE, "XB", 2));
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// send 2 messages
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send_string_expect_success (pub, "XA", 0);
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send_string_expect_success (pub, "XB", 0);
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// receive the single message
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recv_string_expect_success (sub, "XB", 0);
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// should be nothing left in the queue
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TEST_ASSERT_FAILURE_ERRNO (
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EAGAIN, zmq_recv (sub, buffer, sizeof buffer, ZMQ_DONTWAIT));
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// Clean up.
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test_context_socket_close (pub);
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test_context_socket_close (sub);
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}
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int main ()
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{
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setup_test_environment ();
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UNITY_BEGIN ();
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RUN_TEST (test_basic);
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RUN_TEST (test_unsubscribe_manual);
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RUN_TEST (test_xpub_proxy_unsubscribe_on_disconnect);
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RUN_TEST (test_missing_subscriptions);
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RUN_TEST (test_unsubscribe_cleanup);
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return UNITY_END ();
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}
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