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
35void test_req_correlate ()
36{
37 void *req = test_context_socket (ZMQ_REQ);
38 void *router = test_context_socket (ZMQ_ROUTER);
39
40 int enabled = 1;
41 TEST_ASSERT_SUCCESS_ERRNO (
42 zmq_setsockopt (req, ZMQ_REQ_CORRELATE, &enabled, sizeof (int)));
43
44 int rcvtimeo = 100;
45 TEST_ASSERT_SUCCESS_ERRNO (
46 zmq_setsockopt (req, ZMQ_RCVTIMEO, &rcvtimeo, sizeof (int)));
47
48 char my_endpoint[MAX_SOCKET_STRING];
49 bind_loopback_ipv4 (router, my_endpoint, sizeof my_endpoint);
50
51 TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (req, my_endpoint));
52
53 // Send a multi-part request.
54 s_send_seq (req, "ABC", "DEF", SEQ_END);
55
56 zmq_msg_t msg;
57 zmq_msg_init (&msg);
58
59 // Receive peer routing id
60 TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_recv (&msg, router, 0));
61 TEST_ASSERT_GREATER_THAN_INT (0, zmq_msg_size (&msg));
62 zmq_msg_t peer_id_msg;
63 zmq_msg_init (&peer_id_msg);
64 zmq_msg_copy (&peer_id_msg, &msg);
65
66 int more = 0;
67 size_t more_size = sizeof (more);
68 TEST_ASSERT_SUCCESS_ERRNO (
69 zmq_getsockopt (router, ZMQ_RCVMORE, &more, &more_size));
70 TEST_ASSERT_TRUE (more);
71
72 // Receive request id 1
73 TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_recv (&msg, router, 0));
74 TEST_ASSERT_EQUAL_UINT (sizeof (uint32_t), zmq_msg_size (&msg));
75 const uint32_t req_id = *static_cast<uint32_t *> (zmq_msg_data (&msg));
76 zmq_msg_t req_id_msg;
77 zmq_msg_init (&req_id_msg);
78 zmq_msg_copy (&req_id_msg, &msg);
79
80 more = 0;
81 more_size = sizeof (more);
82 TEST_ASSERT_SUCCESS_ERRNO (
83 zmq_getsockopt (router, ZMQ_RCVMORE, &more, &more_size));
84 TEST_ASSERT_TRUE (more);
85
86 // Receive the rest.
87 s_recv_seq (router, 0, "ABC", "DEF", SEQ_END);
88
89 uint32_t bad_req_id = req_id + 1;
90
91 // Send back a bad reply: wrong req id, 0, data
92 zmq_msg_copy (&msg, &peer_id_msg);
93 TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_send (&msg, router, ZMQ_SNDMORE));
94 zmq_msg_init_data (&msg, &bad_req_id, sizeof (uint32_t), NULL, NULL);
95 TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_send (&msg, router, ZMQ_SNDMORE));
96 s_send_seq (router, 0, "DATA", SEQ_END);
97
98 // Send back a good reply: good req id, 0, data
99 zmq_msg_copy (&msg, &peer_id_msg);
100 TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_send (&msg, router, ZMQ_SNDMORE));
101 zmq_msg_copy (&msg, &req_id_msg);
102 TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_send (&msg, router, ZMQ_SNDMORE));
103 s_send_seq (router, 0, "GHI", SEQ_END);
104
105 // Receive reply. If bad reply got through, we wouldn't see
106 // this particular data.
107 s_recv_seq (req, "GHI", SEQ_END);
108
109 TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_close (&msg));
110 TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_close (&peer_id_msg));
111 TEST_ASSERT_SUCCESS_ERRNO (zmq_msg_close (&req_id_msg));
112
113 test_context_socket_close_zero_linger (req);
114 test_context_socket_close_zero_linger (router);
115}
116
117int main ()
118{
119 setup_test_environment ();
120
121 UNITY_BEGIN ();
122 RUN_TEST (test_req_correlate);
123 return UNITY_END ();
124}
125