1/*
2 Copyright (c) 2007-2016 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 ()
36{
37 // Create a publisher
38 void *pub = test_context_socket (ZMQ_XPUB);
39
40 int hwm = 2000;
41 TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_SNDHWM, &hwm, 4));
42
43 TEST_ASSERT_SUCCESS_ERRNO (zmq_bind (pub, "inproc://soname"));
44
45 // set pub socket options
46 int wait = 1;
47 TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_XPUB_NODROP, &wait, 4));
48
49 // Create a subscriber
50 void *sub = test_context_socket (ZMQ_SUB);
51 TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sub, "inproc://soname"));
52
53 // Subscribe for all messages.
54 TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (sub, ZMQ_SUBSCRIBE, "", 0));
55
56 // we must wait for the subscription to be processed here, otherwise some
57 // or all published messages might be lost
58 recv_string_expect_success (pub, "\1", 0);
59
60 int hwmlimit = hwm - 1;
61 int send_count = 0;
62
63 // Send an empty message
64 for (int i = 0; i < hwmlimit; i++) {
65 TEST_ASSERT_SUCCESS_ERRNO (zmq_send (pub, NULL, 0, 0));
66 send_count++;
67 }
68
69 int recv_count = 0;
70 do {
71 // Receive the message in the subscriber
72 int rc = zmq_recv (sub, NULL, 0, 0);
73 if (rc == -1) {
74 TEST_ASSERT_EQUAL_INT (EAGAIN, errno);
75 break;
76 }
77 TEST_ASSERT_EQUAL_INT (0, rc);
78 recv_count++;
79
80 if (recv_count == 1) {
81 const int sub_rcvtimeo = 250;
82 TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (
83 sub, ZMQ_RCVTIMEO, &sub_rcvtimeo, sizeof (sub_rcvtimeo)));
84 }
85
86 } while (true);
87
88 TEST_ASSERT_EQUAL_INT (send_count, recv_count);
89
90 // Now test real blocking behavior
91 // Set a timeout, default is infinite
92 int timeout = 0;
93 TEST_ASSERT_SUCCESS_ERRNO (zmq_setsockopt (pub, ZMQ_SNDTIMEO, &timeout, 4));
94
95 send_count = 0;
96 recv_count = 0;
97 hwmlimit = hwm;
98
99 // Send an empty message until we get an error, which must be EAGAIN
100 while (zmq_send (pub, "", 0, 0) == 0)
101 send_count++;
102 TEST_ASSERT_EQUAL_INT (EAGAIN, errno);
103
104 if (send_count > 0) {
105 // Receive first message with blocking
106 TEST_ASSERT_SUCCESS_ERRNO (zmq_recv (sub, NULL, 0, 0));
107 recv_count++;
108
109 while (zmq_recv (sub, NULL, 0, ZMQ_DONTWAIT) == 0)
110 recv_count++;
111 }
112
113 TEST_ASSERT_EQUAL_INT (send_count, recv_count);
114
115 // Clean up.
116 test_context_socket_close (pub);
117 test_context_socket_close (sub);
118}
119
120int main ()
121{
122 setup_test_environment ();
123 UNITY_BEGIN ();
124 RUN_TEST (test);
125 return UNITY_END ();
126}
127