1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/*
Copyright (c) 2007-2011 iMatix Corporation
Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file
This file is part of 0MQ.
0MQ is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
0MQ is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <assert.h>
#include "../include/zmq.h"
#include "../include/zmq_utils.h"
int main (int argc, char *argv [])
{
void *ctx = zmq_init (1);
assert (ctx);
// Check whether requests are discarded because of disconnected requester.
// Create a server.
void *xrep = zmq_socket (ctx, ZMQ_XREP);
assert (xrep);
int rc = zmq_bind (xrep, "tcp://127.0.0.1:5560");
assert (rc == 0);
// Create a client.
void *xreq = zmq_socket (ctx, ZMQ_XREQ);
assert (xreq);
rc = zmq_connect (xreq, "tcp://127.0.0.1:5560");
assert (rc == 0);
// Send requests.
rc = zmq_send (xreq, "ABC", 3, 0);
assert (rc == 3);
rc = zmq_send (xreq, "DEF", 3, 0);
assert (rc == 3);
// Disconnect client.
rc = zmq_close (xreq);
assert (rc == 0);
// Wait a while for disconnect to happen.
zmq_sleep (1);
// Try to receive a request -- it should have been discarded.
char buff [3];
rc = zmq_recv (xrep, buff, 3, ZMQ_DONTWAIT);
assert (rc < 0);
assert (errno == EAGAIN);
// Clean up.
rc = zmq_close (xrep);
assert (rc == 0);
// New test. Check whether reply is dropped because of HWM overflow.
int one = 1;
xreq = zmq_socket (ctx, ZMQ_XREQ);
assert (xreq);
rc = zmq_setsockopt (xreq, ZMQ_RCVHWM, &one, sizeof(one));
assert (rc == 0);
rc = zmq_bind (xreq, "inproc://a");
assert (rc == 0);
void *rep = zmq_socket (ctx, ZMQ_REP);
assert (rep);
rc = zmq_setsockopt (rep, ZMQ_SNDHWM, &one, sizeof(one));
assert (rc == 0);
rc = zmq_connect (rep, "inproc://a");
assert (rc == 0);
// Send request 1
rc = zmq_send (xreq, buff, 1, 0);
assert (rc == 1);
// Send request 2
rc = zmq_send (xreq, buff, 1, 0);
assert (rc == 1);
// Receive request 1
rc = zmq_recv (rep, buff, 1, 0);
assert (rc == 1);
// Send request 3
rc = zmq_send (xreq, buff, 1, 0);
assert (rc == 1);
// Send reply 1
rc = zmq_send (rep, buff, 1, 0);
assert (rc == 1);
// Receive request 2
rc = zmq_recv (rep, buff, 1, 0);
assert (rc == 1);
// Send reply 2
rc = zmq_send (rep, buff, 1, 0);
assert (rc == 1);
// Receive request 3
rc = zmq_recv (rep, buff, 1, 0);
assert (rc == 1);
// Send reply 3
rc = zmq_send (rep, buff, 1, 0);
assert (rc == 1);
// Receive reply 1
rc = zmq_recv (xreq, buff, 1, 0);
assert (rc == 1);
// Receive reply 2
rc = zmq_recv (xreq, buff, 1, 0);
assert (rc == 1);
// Try to receive reply 3, it should have been dropped.
rc = zmq_recv (xreq, buff, 1, ZMQ_DONTWAIT);
assert (rc == -1 && errno == EAGAIN);
// Clean up.
rc = zmq_close (xreq);
assert (rc == 0);
rc = zmq_close (rep);
assert (rc == 0);
rc = zmq_term (ctx);
assert (rc == 0);
return 0 ;
}
|
