1/*
2 Copyright (c) 2007-2017 Contributors as noted in the AUTHORS file
3
4 This file is part of libzmq, the ZeroMQ core engine in C++.
5
6 libzmq is free software; you can redistribute it and/or modify it under
7 the terms of the GNU Lesser General Public License (LGPL) as published
8 by the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 As a special exception, the Contributors give you permission to link
12 this library with independent modules to produce an executable,
13 regardless of the license terms of these independent modules, and to
14 copy and distribute the resulting executable under terms of your choice,
15 provided that you also meet, for each linked independent module, the
16 terms and conditions of the license of that module. An independent
17 module is a module which is not derived from or based on this library.
18 If you modify this library, you must extend this exception to your
19 version of the library.
20
21 libzmq is distributed in the hope that it will be useful, but WITHOUT
22 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
23 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
24 License for more details.
25
26 You should have received a copy of the GNU Lesser General Public License
27 along with this program. If not, see <http://www.gnu.org/licenses/>.
28*/
29
30#include "testutil.hpp"
31#include "testutil_unity.hpp"
32
33SETUP_TEARDOWN_TESTCONTEXT
34
35// DEBUG shouldn't be defined in sources as it will cause a redefined symbol
36// error when it is defined in the build configuration. It appears that the
37// intent here is to semi-permanently disable DEBUG tracing statements, so the
38// implementation is changed to accomodate that intent.
39//#define DEBUG 0
40#define TRACE_ENABLED 0
41
42void test_router_mandatory_hwm ()
43{
44 if (TRACE_ENABLED)
45 fprintf (stderr, "Staring router mandatory HWM test ...\n");
46 char my_endpoint[MAX_SOCKET_STRING];
47 void *router = test_context_socket (ZMQ_ROUTER);
48
49 // Configure router socket to mandatory routing and set HWM and linger
50 int mandatory = 1;
51 TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (router, ZMQ_ROUTER_MANDATORY,
52 &mandatory, sizeof (mandatory)));
53 int sndhwm = 1;
54 TEST_ASSERT_SUCCESS_ERRNO (
55 zmq_setsockopt (router, ZMQ_SNDHWM, &sndhwm, sizeof (sndhwm)));
56 int linger = 1;
57 TEST_ASSERT_SUCCESS_ERRNO (
58 zmq_setsockopt (router, ZMQ_LINGER, &linger, sizeof (linger)));
59
60 bind_loopback_ipv4 (router, my_endpoint, sizeof my_endpoint);
61
62 // Create dealer called "X" and connect it to our router, configure HWM
63 void *dealer = test_context_socket (ZMQ_DEALER);
64 TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (dealer, ZMQ_ROUTING_ID, "X", 1));
65 int rcvhwm = 1;
66 TEST_ASSERT_SUCCESS_ERRNO (
67 zmq_setsockopt (dealer, ZMQ_RCVHWM, &rcvhwm, sizeof (rcvhwm)));
68
69 TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (dealer, my_endpoint));
70
71 // Get message from dealer to know when connection is ready
72 send_string_expect_success (dealer, "Hello", 0);
73 recv_string_expect_success (router, "X", 0);
74
75 int i;
76 const int buf_size = 65536;
77 const uint8_t buf[buf_size] = {0};
78 // Send first batch of messages
79 for (i = 0; i < 100000; ++i) {
80 if (TRACE_ENABLED)
81 fprintf (stderr, "Sending message %d ...\n", i);
82 const int rc = zmq_send (router, "X", 1, ZMQ_DONTWAIT | ZMQ_SNDMORE);
83 if (rc == -1 && zmq_errno () == EAGAIN)
84 break;
85 TEST_ASSERT_EQUAL_INT (1, rc);
86 send_array_expect_success (router, buf, ZMQ_DONTWAIT);
87 }
88 // This should fail after one message but kernel buffering could
89 // skew results
90 TEST_ASSERT_LESS_THAN_INT (10, i);
91 msleep (1000);
92 // Send second batch of messages
93 for (; i < 100000; ++i) {
94 if (TRACE_ENABLED)
95 fprintf (stderr, "Sending message %d (part 2) ...\n", i);
96 const int rc = zmq_send (router, "X", 1, ZMQ_DONTWAIT | ZMQ_SNDMORE);
97 if (rc == -1 && zmq_errno () == EAGAIN)
98 break;
99 TEST_ASSERT_EQUAL_INT (1, rc);
100 send_array_expect_success (router, buf, ZMQ_DONTWAIT);
101 }
102 // This should fail after two messages but kernel buffering could
103 // skew results
104 TEST_ASSERT_LESS_THAN_INT (20, i);
105
106 if (TRACE_ENABLED)
107 fprintf (stderr, "Done sending messages.\n");
108
109 test_context_socket_close (router);
110 test_context_socket_close (dealer);
111}
112
113int main ()
114{
115 setup_test_environment ();
116
117 UNITY_BEGIN ();
118 RUN_TEST (test_router_mandatory_hwm);
119 return UNITY_END ();
120}
121