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/* SPDX-License-Identifier: MPL-2.0 */
#include "testutil.hpp"
#include "testutil_unity.hpp"
SETUP_TEARDOWN_TESTCONTEXT
void test_with_handover ()
{
char my_endpoint[MAX_SOCKET_STRING];
void *router = test_context_socket (ZMQ_ROUTER);
bind_loopback_ipv4 (router, my_endpoint, sizeof my_endpoint);
// Enable the handover flag
int handover = 1;
TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (router, ZMQ_ROUTER_HANDOVER,
&handover, sizeof (handover)));
// Create dealer called "X" and connect it to our router
void *dealer_one = test_context_socket (ZMQ_DEALER);
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (dealer_one, ZMQ_ROUTING_ID, "X", 1));
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (dealer_one, my_endpoint));
// Get message from dealer to know when connection is ready
char buffer[255];
send_string_expect_success (dealer_one, "Hello", 0);
recv_string_expect_success (router, "X", 0);
recv_string_expect_success (router, "Hello", 0);
// Now create a second dealer that uses the same routing id
void *dealer_two = test_context_socket (ZMQ_DEALER);
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (dealer_two, ZMQ_ROUTING_ID, "X", 1));
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (dealer_two, my_endpoint));
// Get message from dealer to know when connection is ready
send_string_expect_success (dealer_two, "Hello", 0);
recv_string_expect_success (router, "X", 0);
recv_string_expect_success (router, "Hello", 0);
// Send a message to 'X' routing id. This should be delivered
// to the second dealer, instead of the first because of the handover.
send_string_expect_success (router, "X", ZMQ_SNDMORE);
send_string_expect_success (router, "Hello", 0);
// Ensure that the first dealer doesn't receive the message
// but the second one does
const int timeout = SETTLE_TIME;
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (dealer_one, ZMQ_RCVTIMEO, &timeout, sizeof timeout));
TEST_ASSERT_FAILURE_ERRNO (EAGAIN, zmq_recv (dealer_one, buffer, 255, 0));
recv_string_expect_success (dealer_two, "Hello", 0);
test_context_socket_close (router);
test_context_socket_close (dealer_one);
test_context_socket_close (dealer_two);
}
void test_without_handover ()
{
size_t len = MAX_SOCKET_STRING;
char my_endpoint[MAX_SOCKET_STRING];
void *router = test_context_socket (ZMQ_ROUTER);
TEST_ASSERT_SUCCESS_ERRNO (zmq_bind (router, "tcp://127.0.0.1:*"));
TEST_ASSERT_SUCCESS_ERRNO (
zmq_getsockopt (router, ZMQ_LAST_ENDPOINT, my_endpoint, &len));
// Create dealer called "X" and connect it to our router
void *dealer_one = test_context_socket (ZMQ_DEALER);
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (dealer_one, ZMQ_ROUTING_ID, "X", 1));
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (dealer_one, my_endpoint));
// Get message from dealer to know when connection is ready
char buffer[255];
send_string_expect_success (dealer_one, "Hello", 0);
recv_string_expect_success (router, "X", 0);
recv_string_expect_success (router, "Hello", 0);
// Now create a second dealer that uses the same routing id
void *dealer_two = test_context_socket (ZMQ_DEALER);
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (dealer_two, ZMQ_ROUTING_ID, "X", 1));
TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (dealer_two, my_endpoint));
// Send message from second dealer
send_string_expect_success (dealer_two, "Hello", 0);
// This should be ignored by the router
const int timeout = SETTLE_TIME;
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (router, ZMQ_RCVTIMEO, &timeout, sizeof timeout));
TEST_ASSERT_FAILURE_ERRNO (EAGAIN, zmq_recv (router, buffer, 255, 0));
// Send a message to 'X' routing id. This should be delivered
// to the second dealer, instead of the first because of the handover.
send_string_expect_success (router, "X", ZMQ_SNDMORE);
send_string_expect_success (router, "Hello", 0);
// Ensure that the second dealer doesn't receive the message
// but the first one does
TEST_ASSERT_SUCCESS_ERRNO (
zmq_setsockopt (dealer_two, ZMQ_RCVTIMEO, &timeout, sizeof timeout));
TEST_ASSERT_FAILURE_ERRNO (EAGAIN, zmq_recv (dealer_two, buffer, 255, 0));
recv_string_expect_success (dealer_one, "Hello", 0);
test_context_socket_close (router);
test_context_socket_close (dealer_one);
test_context_socket_close (dealer_two);
}
int main ()
{
setup_test_environment ();
UNITY_BEGIN ();
RUN_TEST (test_with_handover);
RUN_TEST (test_without_handover);
return UNITY_END ();
}
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