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
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
|
// $Id$
// ============================================================================
//
// = LIBRARY
// tests
//
// = FILENAME
// SOCK_Test.cpp
//
// = DESCRIPTION
// This is a test of the <ACE_SOCK_Acceptor> and
// <ACE_SOCK_Connector> classes. The test forks two processes or
// spawns two threads (depending upon the platform) and then
// executes client and server allowing them to connect and
// exchange data.
//
// = AUTHOR
// Prashant Jain <pjain@cs.wustl.edu> and Doug Schmidt <schmidt@cs.wustl.edu>
//
// ============================================================================
#include "test_config.h"
#include "ace/OS.h"
#include "ace/Thread.h"
#include "ace/Thread_Manager.h"
#include "ace/SOCK_Connector.h"
#include "ace/SOCK_Acceptor.h"
#include "ace/Handle_Set.h"
ACE_RCSID(tests, SOCK_Test, "$Id$")
static const char ACE_ALPHABET[] = "abcdefghijklmnopqrstuvwxyz";
static void *
client (void *arg)
{
ACE_INET_Addr *remote_addr = (ACE_INET_Addr *) arg;
ACE_INET_Addr server_addr (remote_addr->get_port_number (), ACE_LOCALHOST);
ACE_SOCK_Stream cli_stream;
ACE_SOCK_Connector con;
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("(%P|%t) starting non-blocking connect\n")));
// Initiate timed, non-blocking connection with server.
// Attempt a non-blocking connect to the server.
if (con.connect (cli_stream, server_addr,
(ACE_Time_Value *) &ACE_Time_Value::zero) == -1)
{
if (errno != EWOULDBLOCK)
ACE_ERROR ((LM_ERROR, ACE_TEXT ("(%P|%t) %p\n"), ACE_TEXT ("connection failed")));
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("(%P|%t) starting timed connect\n")));
// Check if non-blocking connection is in progress,
// and wait up to ACE_DEFAULT_TIMEOUT seconds for it to complete.
ACE_Time_Value tv (ACE_DEFAULT_TIMEOUT);
if (con.complete (cli_stream, &server_addr, &tv) == -1)
ACE_ERROR_RETURN ((LM_ERROR, ACE_TEXT ("(%P|%t) %p\n"), ACE_TEXT ("connection failed")), 0);
else
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("(%P|%t) connected to %s\n"),
ACE_TEXT_CHAR_TO_TCHAR(server_addr.get_host_name ())));
}
if (cli_stream.disable (ACE_NONBLOCK) == -1)
ACE_ERROR ((LM_ERROR, ACE_TEXT ("(%P|%t) %p\n"), ACE_TEXT ("disable")));
// Send data to server (correctly handles "incomplete writes").
for (const char *c = ACE_ALPHABET; *c != '\0'; c++)
if (cli_stream.send_n (c, 1) == -1)
ACE_ERROR ((LM_ERROR, ACE_TEXT ("(%P|%t) %p\n"), ACE_TEXT ("send_n")));
// Explicitly close the writer-side of the connection.
if (cli_stream.close_writer () == -1)
ACE_ERROR ((LM_ERROR, ACE_TEXT ("(%P|%t) %p\n"), ACE_TEXT ("close_writer")));
char buf[1];
// Wait for handshake with server.
if (cli_stream.recv_n (buf, 1) != 1)
ACE_ERROR ((LM_ERROR, ACE_TEXT ("(%P|%t) %p\n"), ACE_TEXT ("recv_n")));
// Close the connection completely.
if (cli_stream.close () == -1)
ACE_ERROR ((LM_ERROR, ACE_TEXT ("(%P|%t) %p\n"), ACE_TEXT ("close")));
return 0;
}
static void *
server (void *arg)
{
ACE_SOCK_Acceptor *peer_acceptor = (ACE_SOCK_Acceptor *) arg;
if (peer_acceptor->enable (ACE_NONBLOCK) == -1)
ACE_ERROR ((LM_ERROR, ACE_TEXT ("(%P|%t) %p\n"), ACE_TEXT ("enable")));
// Keep these objects out here to prevent excessive constructor
// calls...
ACE_SOCK_Stream new_stream;
ACE_INET_Addr cli_addr;
ACE_Handle_Set handle_set;
const ACE_Time_Value def_timeout (ACE_DEFAULT_TIMEOUT);
ACE_Time_Value tv (def_timeout);
char buf[BUFSIZ];
const char *t = ACE_ALPHABET;
handle_set.reset ();
handle_set.set_bit (peer_acceptor->get_handle ());
int result = ACE_OS::select (int (peer_acceptor->get_handle ()) + 1,
handle_set,
0, 0, &tv);
ACE_ASSERT (tv == def_timeout);
if (result == -1)
ACE_ERROR_RETURN ((LM_ERROR, ACE_TEXT ("(%P|%t) %p\n"), ACE_TEXT ("select")), 0);
else if (result == 0)
{
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("(%P|%t) select timed out, shutting down\n")));
return 0;
}
// Create a new ACE_SOCK_Stream endpoint (note automatic restart
// if errno == EINTR).
while ((result = peer_acceptor->accept (new_stream, &cli_addr)) != -1)
{
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("(%P|%t) client %s connected from %d\n"),
ACE_TEXT_CHAR_TO_TCHAR(cli_addr.get_host_name ()), cli_addr.get_port_number ()));
// Enable non-blocking I/O.
if (new_stream.enable (ACE_NONBLOCK) == -1)
ACE_ERROR_RETURN ((LM_ERROR, ACE_TEXT ("(%P|%t) %p\n"), ACE_TEXT ("enable")), 0);
handle_set.reset ();
handle_set.set_bit (new_stream.get_handle ());
// Read data from client (terminate on error).
for (ssize_t r_bytes; ;)
{
if (ACE_OS::select (int (new_stream.get_handle ()) + 1,
handle_set,
0, 0, 0) == -1)
ACE_ERROR_RETURN ((LM_ERROR, ACE_TEXT ("(%P|%t) %p\n"), ACE_TEXT ("select")), 0);
while ((r_bytes = new_stream.recv (buf, 1)) > 0)
{
ACE_ASSERT (*t == buf[0]);
t++;
}
if (r_bytes == 0)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P|%t) reached end of input, connection closed by client\n")));
// Handshake back with client.
if (new_stream.send_n ("", 1) != 1)
ACE_ERROR ((LM_ERROR, ACE_TEXT ("(%P|%t) %p\n"), ACE_TEXT ("send_n")));
// Close endpoint.
if (new_stream.close () == -1)
ACE_ERROR ((LM_ERROR, ACE_TEXT ("(%P|%t) %p\n"), ACE_TEXT ("close")));
return 0;
}
else if (r_bytes == -1)
{
if (errno == EAGAIN || errno == EWOULDBLOCK)
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("(%P|%t) no input available, going back to reading\n")));
else
ACE_ERROR_RETURN ((LM_ERROR, ACE_TEXT ("(%P|%t) %p\n"), ACE_TEXT ("recv_n")), 0);
}
}
}
if (result == -1)
{
if (errno == EWOULDBLOCK)
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("(%P|%t) no connections available, shutting down\n")));
else
ACE_ERROR ((LM_ERROR, ACE_TEXT ("(%P|%t) %p\n"), ACE_TEXT ("accept")));
}
return 0;
}
static void
spawn (void)
{
// Acceptor
ACE_SOCK_Acceptor peer_acceptor;
// Create a server address.
ACE_INET_Addr server_addr;
// Bind listener to any port and then find out what the port was.
if (peer_acceptor.open (ACE_Addr::sap_any) == -1
|| peer_acceptor.get_local_addr (server_addr) == -1)
ACE_ERROR ((LM_ERROR, ACE_TEXT ("(%P|%t) %p\n"), ACE_TEXT ("open")));
else
{
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("(%P|%t) starting server at port %d\n"),
server_addr.get_port_number ()));
#if !defined (ACE_LACKS_FORK)
switch (ACE_OS::fork ("child"))
{
case -1:
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("(%P|%t) %p\n%a"),
ACE_TEXT ("fork failed"),
1));
/* NOTREACHED */
case 0:
client (&server_addr);
exit (0);
/* NOTREACHED */
default:
server ((void *) &peer_acceptor);
ACE_OS::wait ();
}
#elif defined (ACE_HAS_THREADS)
if (ACE_Thread_Manager::instance ()->spawn
(ACE_THR_FUNC (server),
(void *) &peer_acceptor,
THR_NEW_LWP | THR_DETACHED) == -1)
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("(%P|%t) %p\n%a"),
ACE_TEXT ("thread create failed"),
1));
if (ACE_Thread_Manager::instance ()->spawn
(ACE_THR_FUNC (client),
(void *) &server_addr,
THR_NEW_LWP | THR_DETACHED) == -1)
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("(%P|%t) %p\n%a"),
ACE_TEXT ("thread create failed"),
1));
// Wait for the threads to exit.
ACE_Thread_Manager::instance ()->wait ();
#else
ACE_ERROR ((LM_INFO,
ACE_TEXT ("(%P|%t) ")
ACE_TEXT ("only one thread may be run ")
ACE_TEXT ("in a process on this platform\n")));
#endif /* ACE_HAS_THREADS */
peer_acceptor.close ();
}
}
int
ACE_TMAIN (int, ACE_TCHAR *[])
{
ACE_START_TEST (ACE_TEXT ("SOCK_Test"));
spawn ();
ACE_END_TEST;
return 0;
}
|
