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edb4ca1023
Solution: when a connection breaks and ZMQ_RECONNECT_IVL is set to -1, which means a reconnection will not be attempted, send a message from the I/O thread to the application thread to make the socket call term_endpoint, which is the equivalent of manually calling zmq_disconnect. This way subsequent zmq_connect call to the same endpoint will attempt again to do a connection. Otherwise, for some socket types like SUBs, those new connects will fail as the endpoint is recorded, despite the connection having been permanently closed. Add test cases to exercise this corner case with TCP and IPC.
150 lines
3.9 KiB
C++
150 lines
3.9 KiB
C++
/*
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Copyright (c) 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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#ifndef ZMQ_HAVE_WINDOWS
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void test_reconnect_ivl_ipc (void)
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{
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void *ctx = zmq_ctx_new ();
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assert (ctx);
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void *sb = zmq_socket (ctx, ZMQ_PAIR);
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assert (sb);
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int rc = zmq_bind (sb, "ipc:///tmp/test_reconnect_ivl");
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assert (rc == 0);
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void *sc = zmq_socket (ctx, ZMQ_PAIR);
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assert (sc);
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int interval = -1;
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rc = zmq_setsockopt (sc, ZMQ_RECONNECT_IVL, &interval, sizeof (int));
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assert (rc == 0);
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rc = zmq_connect (sc, "ipc:///tmp/test_reconnect_ivl");
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assert (rc == 0);
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bounce (sb, sc);
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rc = zmq_unbind (sb, "ipc:///tmp/test_reconnect_ivl");
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assert (rc == 0);
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expect_bounce_fail (sb, sc);
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rc = zmq_bind (sb, "ipc:///tmp/test_reconnect_ivl");
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assert (rc == 0);
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expect_bounce_fail (sb, sc);
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rc = zmq_connect (sc, "ipc:///tmp/test_reconnect_ivl");
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assert (rc == 0);
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bounce (sb, sc);
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rc = zmq_close (sc);
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assert (rc == 0);
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rc = zmq_close (sb);
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assert (rc == 0);
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rc = zmq_ctx_term (ctx);
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assert (rc == 0);
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}
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#endif
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void test_reconnect_ivl_tcp (const char *address)
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{
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size_t len = MAX_SOCKET_STRING;
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char my_endpoint[MAX_SOCKET_STRING];
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void *ctx = zmq_ctx_new ();
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assert (ctx);
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if (streq (address, "tcp://[::1]:*")) {
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if (is_ipv6_available ()) {
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zmq_ctx_set(ctx, ZMQ_IPV6, 1);
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} else {
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zmq_ctx_term (ctx);
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return;
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}
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}
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void *sb = zmq_socket (ctx, ZMQ_PAIR);
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assert (sb);
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int rc = zmq_bind (sb, address);
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assert (rc == 0);
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rc = zmq_getsockopt (sb, ZMQ_LAST_ENDPOINT, my_endpoint, &len);
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assert (rc == 0);
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void *sc = zmq_socket (ctx, ZMQ_PAIR);
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assert (sc);
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int interval = -1;
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rc = zmq_setsockopt (sc, ZMQ_RECONNECT_IVL, &interval, sizeof (int));
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assert (rc == 0);
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rc = zmq_connect (sc, my_endpoint);
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assert (rc == 0);
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bounce (sb, sc);
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rc = zmq_unbind (sb, my_endpoint);
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assert (rc == 0);
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expect_bounce_fail (sb, sc);
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rc = zmq_bind (sb, my_endpoint);
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assert (rc == 0);
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expect_bounce_fail (sb, sc);
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rc = zmq_connect (sc, my_endpoint);
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assert (rc == 0);
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bounce (sb, sc);
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rc = zmq_close (sc);
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assert (rc == 0);
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rc = zmq_close (sb);
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assert (rc == 0);
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rc = zmq_ctx_term (ctx);
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assert (rc == 0);
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}
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int main (void)
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{
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setup_test_environment ();
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#ifndef ZMQ_HAVE_WINDOWS
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test_reconnect_ivl_ipc ();
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#endif
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test_reconnect_ivl_tcp ("tcp://127.0.0.1:*");
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test_reconnect_ivl_tcp ("tcp://[::1]:*");
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return 0 ;
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}
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