libzmq/tests/test_xpub_manual.cpp

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/*
Copyright (c) 2007-2017 Contributors as noted in the AUTHORS file
This file is part of libzmq, the ZeroMQ core engine in C++.
libzmq is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
As a special exception, the Contributors give you permission to link
this library with independent modules to produce an executable,
regardless of the license terms of these independent modules, and to
copy and distribute the resulting executable under terms of your choice,
provided that you also meet, for each linked independent module, the
terms and conditions of the license of that module. An independent
module is a module which is not derived from or based on this library.
If you modify this library, you must extend this exception to your
version of the library.
libzmq 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"
#include "testutil_unity.hpp"
SETUP_TEARDOWN_TESTCONTEXT
void test_basic ()
{
// Create a publisher
void *pub = test_context_socket (ZMQ_XPUB);
int manual = 1;
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (pub, ZMQ_XPUB_MANUAL, &manual, 4));
TEST_ASSERT_SUCCESS_ERRNO (zmq_bind (pub, "inproc://soname"));
// Create a subscriber
void *sub = test_context_socket (ZMQ_XSUB);
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sub, "inproc://soname"));
// Subscribe for A
const char subscription[] = {1, 'A', 0};
send_string_expect_success (sub, subscription, 0);
// Receive subscriptions from subscriber
recv_string_expect_success (pub, subscription, 0);
// Subscribe socket for B instead
TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_SUBSCRIBE, "B", 1));
// Sending A message and B Message
send_string_expect_success (pub, "A", 0);
send_string_expect_success (pub, "B", 0);
recv_string_expect_success (sub, "B", ZMQ_DONTWAIT);
// Clean up.
test_context_socket_close (pub);
test_context_socket_close (sub);
}
void test_unsubscribe_manual ()
{
// Create a publisher
void *pub = test_context_socket (ZMQ_XPUB);
TEST_ASSERT_SUCCESS_ERRNO (zmq_bind (pub, "inproc://soname"));
// set pub socket options
int manual = 1;
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (pub, ZMQ_XPUB_MANUAL, &manual, sizeof (manual)));
// Create a subscriber
void *sub = test_context_socket (ZMQ_XSUB);
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sub, "inproc://soname"));
// Subscribe for A
const uint8_t subscription1[] = {1, 'A'};
send_array_expect_success (sub, subscription1, 0);
// Subscribe for B
const uint8_t subscription2[] = {1, 'B'};
send_array_expect_success (sub, subscription2, 0);
char buffer[3];
// Receive subscription "A" from subscriber
recv_array_expect_success (pub, subscription1, 0);
// Subscribe socket for XA instead
TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_SUBSCRIBE, "XA", 2));
// Receive subscription "B" from subscriber
recv_array_expect_success (pub, subscription2, 0);
// Subscribe socket for XB instead
TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_SUBSCRIBE, "XB", 2));
// Unsubscribe from A
const uint8_t unsubscription1[2] = {0, 'A'};
send_array_expect_success (sub, unsubscription1, 0);
// Receive unsubscription "A" from subscriber
recv_array_expect_success (pub, unsubscription1, 0);
// Unsubscribe socket from XA instead
TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_UNSUBSCRIBE, "XA", 2));
// Sending messages XA, XB
send_string_expect_success (pub, "XA", 0);
send_string_expect_success (pub, "XB", 0);
// Subscriber should receive XB only
recv_string_expect_success (sub, "XB", ZMQ_DONTWAIT);
// Close subscriber
test_context_socket_close (sub);
// Receive unsubscription "B"
const char unsubscription2[2] = {0, 'B'};
TEST_ASSERT_EQUAL_INT (
sizeof unsubscription2,
TEST_ASSERT_SUCCESS_ERRNO (zmq_recv (pub, buffer, sizeof buffer, 0)));
TEST_ASSERT_EQUAL_INT8_ARRAY (unsubscription2, buffer,
sizeof unsubscription2);
// Unsubscribe socket from XB instead
TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_UNSUBSCRIBE, "XB", 2));
// Clean up.
test_context_socket_close (pub);
}
void test_xpub_proxy_unsubscribe_on_disconnect ()
{
const uint8_t topic_buff[] = {"1"};
const uint8_t payload_buff[] = {"X"};
char my_endpoint_backend[MAX_SOCKET_STRING];
char my_endpoint_frontend[MAX_SOCKET_STRING];
int manual = 1;
// proxy frontend
void *xsub_proxy = test_context_socket (ZMQ_XSUB);
bind_loopback_ipv4 (xsub_proxy, my_endpoint_frontend,
sizeof my_endpoint_frontend);
// proxy backend
void *xpub_proxy = test_context_socket (ZMQ_XPUB);
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (xpub_proxy, ZMQ_XPUB_MANUAL, &manual, 4));
bind_loopback_ipv4 (xpub_proxy, my_endpoint_backend,
sizeof my_endpoint_backend);
// publisher
void *pub = test_context_socket (ZMQ_PUB);
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (pub, my_endpoint_frontend));
// first subscriber subscribes
void *sub1 = test_context_socket (ZMQ_SUB);
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sub1, my_endpoint_backend));
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (sub1, ZMQ_SUBSCRIBE, topic_buff, 1));
// wait
msleep (SETTLE_TIME);
// proxy reroutes and confirms subscriptions
const uint8_t subscription[2] = {1, *topic_buff};
recv_array_expect_success (xpub_proxy, subscription, ZMQ_DONTWAIT);
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (xpub_proxy, ZMQ_SUBSCRIBE, topic_buff, 1));
send_array_expect_success (xsub_proxy, subscription, 0);
// second subscriber subscribes
void *sub2 = test_context_socket (ZMQ_SUB);
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sub2, my_endpoint_backend));
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (sub2, ZMQ_SUBSCRIBE, topic_buff, 1));
// wait
msleep (SETTLE_TIME);
// proxy reroutes
recv_array_expect_success (xpub_proxy, subscription, ZMQ_DONTWAIT);
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (xpub_proxy, ZMQ_SUBSCRIBE, topic_buff, 1));
send_array_expect_success (xsub_proxy, subscription, 0);
// wait
msleep (SETTLE_TIME);
// let publisher send a msg
send_array_expect_success (pub, topic_buff, ZMQ_SNDMORE);
send_array_expect_success (pub, payload_buff, 0);
// wait
msleep (SETTLE_TIME);
// proxy reroutes data messages to subscribers
recv_array_expect_success (xsub_proxy, topic_buff, ZMQ_DONTWAIT);
recv_array_expect_success (xsub_proxy, payload_buff, ZMQ_DONTWAIT);
send_array_expect_success (xpub_proxy, topic_buff, ZMQ_SNDMORE);
send_array_expect_success (xpub_proxy, payload_buff, 0);
// wait
msleep (SETTLE_TIME);
// each subscriber should now get a message
recv_array_expect_success (sub2, topic_buff, ZMQ_DONTWAIT);
recv_array_expect_success (sub2, payload_buff, ZMQ_DONTWAIT);
recv_array_expect_success (sub1, topic_buff, ZMQ_DONTWAIT);
recv_array_expect_success (sub1, payload_buff, ZMQ_DONTWAIT);
// Disconnect both subscribers
test_context_socket_close (sub1);
test_context_socket_close (sub2);
// wait
msleep (SETTLE_TIME);
// unsubscribe messages are passed from proxy to publisher
const uint8_t unsubscription[] = {0, *topic_buff};
recv_array_expect_success (xpub_proxy, unsubscription, 0);
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (xpub_proxy, ZMQ_UNSUBSCRIBE, topic_buff, 1));
send_array_expect_success (xsub_proxy, unsubscription, 0);
// should receive another unsubscribe msg
recv_array_expect_success (xpub_proxy, unsubscription, 0);
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (xpub_proxy, ZMQ_UNSUBSCRIBE, topic_buff, 1));
send_array_expect_success (xsub_proxy, unsubscription, 0);
// wait
msleep (SETTLE_TIME);
// let publisher send a msg
send_array_expect_success (pub, topic_buff, ZMQ_SNDMORE);
send_array_expect_success (pub, payload_buff, 0);
// wait
msleep (SETTLE_TIME);
// nothing should come to the proxy
char buffer[1];
TEST_ASSERT_FAILURE_ERRNO (
EAGAIN, zmq_recv (xsub_proxy, buffer, sizeof buffer, ZMQ_DONTWAIT));
test_context_socket_close (pub);
test_context_socket_close (xpub_proxy);
test_context_socket_close (xsub_proxy);
}
void test_missing_subscriptions ()
{
const char *topic1 = "1";
const char *topic2 = "2";
const char *payload = "X";
char my_endpoint_backend[MAX_SOCKET_STRING];
char my_endpoint_frontend[MAX_SOCKET_STRING];
int manual = 1;
// proxy frontend
void *xsub_proxy = test_context_socket (ZMQ_XSUB);
bind_loopback_ipv4 (xsub_proxy, my_endpoint_frontend,
sizeof my_endpoint_frontend);
// proxy backend
void *xpub_proxy = test_context_socket (ZMQ_XPUB);
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (xpub_proxy, ZMQ_XPUB_MANUAL, &manual, 4));
bind_loopback_ipv4 (xpub_proxy, my_endpoint_backend,
sizeof my_endpoint_backend);
// publisher
void *pub = test_context_socket (ZMQ_PUB);
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (pub, my_endpoint_frontend));
// Here's the problem: because subscribers subscribe in quick succession,
// the proxy is unable to confirm the first subscription before receiving
// the second. This causes the first subscription to get lost.
// first subscriber
void *sub1 = test_context_socket (ZMQ_SUB);
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sub1, my_endpoint_backend));
TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (sub1, ZMQ_SUBSCRIBE, topic1, 1));
// second subscriber
void *sub2 = test_context_socket (ZMQ_SUB);
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sub2, my_endpoint_backend));
TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (sub2, ZMQ_SUBSCRIBE, topic2, 1));
// wait
msleep (SETTLE_TIME);
// proxy now reroutes and confirms subscriptions
const uint8_t subscription1[] = {1, static_cast<uint8_t> (topic1[0])};
recv_array_expect_success (xpub_proxy, subscription1, ZMQ_DONTWAIT);
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (xpub_proxy, ZMQ_SUBSCRIBE, topic1, 1));
send_array_expect_success (xsub_proxy, subscription1, 0);
const uint8_t subscription2[] = {1, static_cast<uint8_t> (topic2[0])};
recv_array_expect_success (xpub_proxy, subscription2, ZMQ_DONTWAIT);
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (xpub_proxy, ZMQ_SUBSCRIBE, topic2, 1));
send_array_expect_success (xsub_proxy, subscription2, 0);
// wait
msleep (SETTLE_TIME);
// let publisher send 2 msgs, each with its own topic_buff
send_string_expect_success (pub, topic1, ZMQ_SNDMORE);
send_string_expect_success (pub, payload, 0);
send_string_expect_success (pub, topic2, ZMQ_SNDMORE);
send_string_expect_success (pub, payload, 0);
// wait
msleep (SETTLE_TIME);
// proxy reroutes data messages to subscribers
recv_string_expect_success (xsub_proxy, topic1, ZMQ_DONTWAIT);
recv_string_expect_success (xsub_proxy, payload, ZMQ_DONTWAIT);
send_string_expect_success (xpub_proxy, topic1, ZMQ_SNDMORE);
send_string_expect_success (xpub_proxy, payload, 0);
recv_string_expect_success (xsub_proxy, topic2, ZMQ_DONTWAIT);
recv_string_expect_success (xsub_proxy, payload, ZMQ_DONTWAIT);
send_string_expect_success (xpub_proxy, topic2, ZMQ_SNDMORE);
send_string_expect_success (xpub_proxy, payload, 0);
// wait
msleep (SETTLE_TIME);
// each subscriber should now get a message
recv_string_expect_success (sub2, topic2, ZMQ_DONTWAIT);
recv_string_expect_success (sub2, payload, ZMQ_DONTWAIT);
recv_string_expect_success (sub1, topic1, ZMQ_DONTWAIT);
recv_string_expect_success (sub1, payload, ZMQ_DONTWAIT);
// Clean up
test_context_socket_close (sub1);
test_context_socket_close (sub2);
test_context_socket_close (pub);
test_context_socket_close (xpub_proxy);
test_context_socket_close (xsub_proxy);
}
void test_unsubscribe_cleanup ()
{
char my_endpoint[MAX_SOCKET_STRING];
// Create a publisher
void *pub = test_context_socket (ZMQ_XPUB);
int manual = 1;
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (pub, ZMQ_XPUB_MANUAL, &manual, 4));
bind_loopback_ipv4 (pub, my_endpoint, sizeof my_endpoint);
// Create a subscriber
void *sub = test_context_socket (ZMQ_XSUB);
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sub, my_endpoint));
// Subscribe for A
const uint8_t subscription1[2] = {1, 'A'};
send_array_expect_success (sub, subscription1, 0);
// Receive subscriptions from subscriber
recv_array_expect_success (pub, subscription1, 0);
TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_SUBSCRIBE, "XA", 2));
// send 2 messages
send_string_expect_success (pub, "XA", 0);
send_string_expect_success (pub, "XB", 0);
// receive the single message
recv_string_expect_success (sub, "XA", 0);
// should be nothing left in the queue
char buffer[2];
TEST_ASSERT_FAILURE_ERRNO (
EAGAIN, zmq_recv (sub, buffer, sizeof buffer, ZMQ_DONTWAIT));
// close the socket
test_context_socket_close (sub);
// closing the socket will result in an unsubscribe event
const uint8_t unsubscription[2] = {0, 'A'};
recv_array_expect_success (pub, unsubscription, 0);
// this doesn't really do anything
// there is no last_pipe set it will just fail silently
TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_UNSUBSCRIBE, "XA", 2));
// reconnect
sub = test_context_socket (ZMQ_XSUB);
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sub, my_endpoint));
// send a subscription for B
const uint8_t subscription2[2] = {1, 'B'};
send_array_expect_success (sub, subscription2, 0);
// receive the subscription, overwrite it to XB
recv_array_expect_success (pub, subscription2, 0);
TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_SUBSCRIBE, "XB", 2));
// send 2 messages
send_string_expect_success (pub, "XA", 0);
send_string_expect_success (pub, "XB", 0);
// receive the single message
recv_string_expect_success (sub, "XB", 0);
// should be nothing left in the queue
TEST_ASSERT_FAILURE_ERRNO (
EAGAIN, zmq_recv (sub, buffer, sizeof buffer, ZMQ_DONTWAIT));
// Clean up.
test_context_socket_close (pub);
test_context_socket_close (sub);
}
void test_user_message ()
{
// Create a publisher
void *pub = test_context_socket (ZMQ_XPUB);
TEST_ASSERT_SUCCESS_ERRNO (zmq_bind (pub, "inproc://soname"));
// Create a subscriber
void *sub = test_context_socket (ZMQ_XSUB);
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sub, "inproc://soname"));
// Send some data that is neither sub nor unsub
const char subscription[] = {2, 'A', 0};
send_string_expect_success (sub, subscription, 0);
// Receive subscriptions from subscriber
recv_string_expect_success (pub, subscription, 0);
// Clean up.
test_context_socket_close (pub);
test_context_socket_close (sub);
}
#ifdef ZMQ_ONLY_FIRST_SUBSCRIBE
void test_user_message_multi ()
{
const int only_first_subscribe = 1;
// Create a publisher
void *pub = test_context_socket (ZMQ_XPUB);
TEST_ASSERT_SUCCESS_ERRNO (zmq_bind (pub, "inproc://soname"));
TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_ONLY_FIRST_SUBSCRIBE,
&only_first_subscribe,
sizeof (only_first_subscribe)));
// Create a subscriber
void *sub = test_context_socket (ZMQ_XSUB);
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sub, "inproc://soname"));
TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (sub, ZMQ_ONLY_FIRST_SUBSCRIBE,
&only_first_subscribe,
sizeof (only_first_subscribe)));
// Send some data that is neither sub nor unsub
const uint8_t msg_common[] = {'A', 'B', 'C'};
// Message starts with 0 but should still treated as user
const uint8_t msg_0a[] = {0, 'B', 'C'};
const uint8_t msg_0b[] = {0, 'C', 'D'};
// Message starts with 1 but should still treated as user
const uint8_t msg_1a[] = {1, 'B', 'C'};
const uint8_t msg_1b[] = {1, 'C', 'D'};
// Test second message starting with 0
send_array_expect_success (sub, msg_common, ZMQ_SNDMORE);
send_array_expect_success (sub, msg_0a, 0);
// Receive messages from subscriber
recv_array_expect_success (pub, msg_common, 0);
recv_array_expect_success (pub, msg_0a, 0);
// Test second message starting with 1
send_array_expect_success (sub, msg_common, ZMQ_SNDMORE);
send_array_expect_success (sub, msg_1a, 0);
// Receive messages from subscriber
recv_array_expect_success (pub, msg_common, 0);
recv_array_expect_success (pub, msg_1a, 0);
// Test first message starting with 1
send_array_expect_success (sub, msg_1a, ZMQ_SNDMORE);
send_array_expect_success (sub, msg_1b, 0);
recv_array_expect_success (pub, msg_1a, 0);
recv_array_expect_success (pub, msg_1b, 0);
send_array_expect_success (sub, msg_0a, ZMQ_SNDMORE);
send_array_expect_success (sub, msg_0b, 0);
recv_array_expect_success (pub, msg_0a, 0);
recv_array_expect_success (pub, msg_0b, 0);
// Clean up.
test_context_socket_close (pub);
test_context_socket_close (sub);
}
#endif
int main ()
{
setup_test_environment ();
UNITY_BEGIN ();
RUN_TEST (test_basic);
RUN_TEST (test_unsubscribe_manual);
RUN_TEST (test_xpub_proxy_unsubscribe_on_disconnect);
RUN_TEST (test_missing_subscriptions);
RUN_TEST (test_unsubscribe_cleanup);
RUN_TEST (test_user_message);
#ifdef ZMQ_ONLY_FIRST_SUBSCRIBE
RUN_TEST (test_user_message_multi);
#endif
return UNITY_END ();
}