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da31917f4f
Relicense permission collected from all relevant authors as tallied at: https://github.com/rlenferink/libzmq-relicense/blob/master/checklist.md The relicense grants are collected under RELICENSE/ and will be moved to the above repository in a later commit. Fixes https://github.com/zeromq/libzmq/issues/2376
72 lines
2.5 KiB
C++
72 lines
2.5 KiB
C++
/* SPDX-License-Identifier: MPL-2.0 */
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#include "testutil.hpp"
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#include "testutil_unity.hpp"
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SETUP_TEARDOWN_TESTCONTEXT
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// Issue 566 describes a problem in libzmq v4.0.0 where a dealer to router
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// connection would fail randomly. The test works when the two sockets are
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// on the same context, and failed when they were on separate contexts.
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// Fixed by https://github.com/zeromq/libzmq/commit/be25cf.
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void test_issue_566 ()
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{
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char my_endpoint[MAX_SOCKET_STRING];
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void *ctx1 = zmq_ctx_new ();
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TEST_ASSERT_NOT_NULL (ctx1);
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void *ctx2 = zmq_ctx_new ();
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TEST_ASSERT_NOT_NULL (ctx2);
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void *router = zmq_socket (ctx1, ZMQ_ROUTER);
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int on = 1;
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TEST_ASSERT_SUCCESS_ERRNO (
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zmq_setsockopt (router, ZMQ_ROUTER_MANDATORY, &on, sizeof (on)));
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bind_loopback_ipv4 (router, my_endpoint, sizeof (my_endpoint));
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// Repeat often enough to be sure this works as it should
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for (int cycle = 0; cycle < 100; cycle++) {
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// Create dealer with unique explicit routing id
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// We assume the router learns this out-of-band
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void *dealer = zmq_socket (ctx2, ZMQ_DEALER);
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// Leave space for NULL char from sprintf, gcc warning
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char routing_id[11];
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snprintf (routing_id, 11 * sizeof (char), "%09d", cycle);
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TEST_ASSERT_SUCCESS_ERRNO (
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zmq_setsockopt (dealer, ZMQ_ROUTING_ID, routing_id, 10));
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int rcvtimeo = 1000;
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TEST_ASSERT_SUCCESS_ERRNO (
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zmq_setsockopt (dealer, ZMQ_RCVTIMEO, &rcvtimeo, sizeof (int)));
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TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (dealer, my_endpoint));
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// Router will try to send to dealer, at short intervals.
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// It typically takes 2-5 msec for the connection to establish
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// on a loopback interface, but we'll allow up to one second
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// before failing the test (e.g. for running on a debugger or
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// a very slow system).
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for (int attempt = 0; attempt < 500; attempt++) {
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zmq_poll (NULL, 0, 2);
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int rc = zmq_send (router, routing_id, 10, ZMQ_SNDMORE);
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if (rc == -1 && errno == EHOSTUNREACH)
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continue;
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TEST_ASSERT_EQUAL (10, rc);
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send_string_expect_success (router, "HELLO", 0);
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break;
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}
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recv_string_expect_success (dealer, "HELLO", 0);
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close_zero_linger (dealer);
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}
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zmq_close (router);
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zmq_ctx_destroy (ctx1);
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zmq_ctx_destroy (ctx2);
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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_issue_566);
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return UNITY_END ();
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}
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