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/* SPDX-License-Identifier: MPL-2.0 */
#include "testutil.hpp"
#include "testutil_unity.hpp"
SETUP_TEARDOWN_TESTCONTEXT
// SHALL route outgoing messages to available peers using a round-robin
// strategy.
void test_round_robin_out (const char *bind_address_)
{
void *dealer = test_context_socket (ZMQ_DEALER);
char connect_address[MAX_SOCKET_STRING];
test_bind (dealer, bind_address_, connect_address,
sizeof (connect_address));
const size_t services = 5;
void *rep[services];
for (size_t peer = 0; peer < services; ++peer) {
rep[peer] = test_context_socket (ZMQ_REP);
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (rep[peer], connect_address));
}
// Wait for connections.
msleep (SETTLE_TIME);
// 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);
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_close (&msg));
test_context_socket_close_zero_linger (dealer);
for (size_t peer = 0; peer < services; ++peer)
test_context_socket_close_zero_linger (rep[peer]);
}
// SHALL receive incoming messages from its peers using a fair-queuing
// strategy.
void test_fair_queue_in (const char *bind_address_)
{
void *receiver = test_context_socket (ZMQ_DEALER);
char connect_address[MAX_SOCKET_STRING];
test_bind (receiver, bind_address_, connect_address,
sizeof (connect_address));
const size_t services = 5;
void *senders[services];
for (size_t peer = 0; peer < services; ++peer) {
senders[peer] = test_context_socket (ZMQ_DEALER);
TEST_ASSERT_SUCCESS_ERRNO (
zmq_connect (senders[peer], connect_address));
}
zmq_msg_t msg;
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_init (&msg));
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.
msleep (SETTLE_TIME);
// handle the requests
for (size_t peer = 0; peer < services; ++peer)
s_recv_seq (receiver, "B", SEQ_END);
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_close (&msg));
test_context_socket_close_zero_linger (receiver);
for (size_t peer = 0; peer < services; ++peer)
test_context_socket_close_zero_linger (senders[peer]);
}
// 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.
void test_destroy_queue_on_disconnect (const char *bind_address_)
{
void *a = test_context_socket (ZMQ_DEALER);
char connect_address[MAX_SOCKET_STRING];
test_bind (a, bind_address_, connect_address, sizeof (connect_address));
void *b = test_context_socket (ZMQ_DEALER);
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (b, connect_address));
// Send a message in both directions
s_send_seq (a, "ABC", SEQ_END);
s_send_seq (b, "DEF", SEQ_END);
TEST_ASSERT_SUCCESS_ERRNO (zmq_disconnect (b, connect_address));
// Disconnect may take time and need command processing.
zmq_pollitem_t poller[2] = {{a, 0, 0, 0}, {b, 0, 0, 0}};
TEST_ASSERT_SUCCESS_ERRNO (zmq_poll (poller, 2, 100));
TEST_ASSERT_SUCCESS_ERRNO (zmq_poll (poller, 2, 100));
// No messages should be available, sending should fail.
zmq_msg_t msg;
zmq_msg_init (&msg);
TEST_ASSERT_FAILURE_ERRNO (EAGAIN, zmq_send (a, 0, 0, ZMQ_DONTWAIT));
TEST_ASSERT_FAILURE_ERRNO (EAGAIN, zmq_msg_recv (&msg, a, ZMQ_DONTWAIT));
// After a reconnect of B, the messages should still be gone
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (b, connect_address));
TEST_ASSERT_FAILURE_ERRNO (EAGAIN, zmq_msg_recv (&msg, a, ZMQ_DONTWAIT));
TEST_ASSERT_FAILURE_ERRNO (EAGAIN, zmq_msg_recv (&msg, b, ZMQ_DONTWAIT));
TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_close (&msg));
test_context_socket_close_zero_linger (a);
test_context_socket_close_zero_linger (b);
}
// SHALL block on sending, or return a suitable error, when it has no connected peers.
void test_block_on_send_no_peers (const char *bind_address_)
{
LIBZMQ_UNUSED (bind_address_);
void *sc = test_context_socket (ZMQ_DEALER);
int timeout = 250;
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (sc, ZMQ_SNDTIMEO, &timeout, sizeof (timeout)));
TEST_ASSERT_FAILURE_ERRNO (EAGAIN, zmq_send (sc, 0, 0, ZMQ_DONTWAIT));
TEST_ASSERT_FAILURE_ERRNO (EAGAIN, zmq_send (sc, 0, 0, 0));
test_context_socket_close (sc);
}
#define TEST_CASES(name, bind_address) \
void test_round_robin_out_##name () \
{ \
test_round_robin_out (bind_address); \
} \
void test_fair_queue_in_##name () \
{ \
test_fair_queue_in (bind_address); \
} \
void test_block_on_send_no_peers_##name () \
{ \
test_block_on_send_no_peers (bind_address); \
}
TEST_CASES (inproc, "inproc://a")
TEST_CASES (tcp, "tcp://127.0.0.1:*")
int main (void)
{
setup_test_environment ();
UNITY_BEGIN ();
RUN_TEST (test_round_robin_out_inproc);
RUN_TEST (test_fair_queue_in_inproc);
RUN_TEST (test_block_on_send_no_peers_inproc);
RUN_TEST (test_round_robin_out_tcp);
RUN_TEST (test_fair_queue_in_tcp);
RUN_TEST (test_block_on_send_no_peers_tcp);
// TODO *** Test disabled until libzmq does this properly ***
// test_destroy_queue_on_disconnect (ctx);
return UNITY_END ();
}
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