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
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
|
#include "ace/SOCK_Connector.h"
#include "ace/INET_Addr.h"
#include "ace/Log_Category.h"
#include "ace/OS_NS_unistd.h"
#include "ace/OS_NS_sys_socket.h"
#include "ace/os_include/os_fcntl.h"
#if defined (ACE_HAS_ALLOC_HOOKS)
# include "ace/Malloc_Base.h"
#endif /* ACE_HAS_ALLOC_HOOKS */
#if !defined (ACE_HAS_WINCE)
#include "ace/OS_QoS.h"
#endif // ACE_HAS_WINCE
#if !defined (__ACE_INLINE__)
#include "ace/SOCK_Connector.inl"
#endif /* __ACE_INLINE__ */
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
ACE_ALLOC_HOOK_DEFINE(ACE_SOCK_Connector)
void
ACE_SOCK_Connector::dump () const
{
#if defined (ACE_HAS_DUMP)
ACE_TRACE ("ACE_SOCK_Connector::dump");
#endif /* ACE_HAS_DUMP */
}
int
ACE_SOCK_Connector::shared_open (ACE_SOCK_Stream &new_stream,
int protocol_family,
int protocol,
int reuse_addr)
{
ACE_TRACE ("ACE_SOCK_Connector::shared_open");
// Only open a new socket if we don't already have a valid handle.
if (new_stream.get_handle () == ACE_INVALID_HANDLE
&& new_stream.open (SOCK_STREAM,
protocol_family,
protocol,
reuse_addr) == -1)
return -1;
else
return 0;
}
int
ACE_SOCK_Connector::shared_open (ACE_SOCK_Stream &new_stream,
int protocol_family,
int protocol,
ACE_Protocol_Info *protocolinfo,
ACE_SOCK_GROUP g,
u_long flags,
int reuse_addr)
{
ACE_TRACE ("ACE_SOCK_Connector::shared_open");
// Only open a new socket if we don't already have a valid handle.
if (new_stream.get_handle () == ACE_INVALID_HANDLE
&& new_stream.open (SOCK_STREAM,
protocol_family,
protocol,
protocolinfo,
g,
flags,
reuse_addr) == -1)
return -1;
else
return 0;
}
int
ACE_SOCK_Connector::shared_connect_start (ACE_SOCK_Stream &new_stream,
const ACE_Time_Value *timeout,
const ACE_Addr &local_sap)
{
ACE_TRACE ("ACE_SOCK_Connector::shared_connect_start");
if (local_sap != ACE_Addr::sap_any)
{
sockaddr *laddr = reinterpret_cast<sockaddr *> (local_sap.get_addr ());
int const size = local_sap.get_size ();
if (ACE_OS::bind (new_stream.get_handle (), laddr, size) == -1)
{
// Save/restore errno.
ACE_Errno_Guard error (errno);
new_stream.close ();
return -1;
}
}
// Enable non-blocking, if required.
if (timeout != 0 && new_stream.enable (ACE_NONBLOCK) == -1)
return -1;
else
return 0;
}
int
ACE_SOCK_Connector::shared_connect_finish (ACE_SOCK_Stream &new_stream,
const ACE_Time_Value *timeout,
int result)
{
ACE_TRACE ("ACE_SOCK_Connector::shared_connect_finish");
// Save/restore errno.
ACE_Errno_Guard error (errno);
if (result == -1 && timeout != 0)
{
// Check whether the connection is in progress.
if (error == EINPROGRESS || error == EWOULDBLOCK)
{
// This expression checks if we were polling.
if (*timeout == ACE_Time_Value::zero)
{
#if defined(ACE_WIN32)
// In order to detect when the socket that has been
// bound to is in TIME_WAIT we need to do the connect
// (which will always return EWOULDBLOCK) and then do an
// ACE::handle_timed_complete() (with timeout==0,
// i.e. poll). This will do a select() on the handle
// which will immediately return with the handle in an
// error state. The error code is then retrieved with
// getsockopt(). Good sockets however will return from
// the select() with ETIME - in this case return
// EWOULDBLOCK so the wait strategy can complete the
// connection.
if(ACE::handle_timed_complete (new_stream.get_handle (),
timeout) == ACE_INVALID_HANDLE)
{
int const tmp = errno;
if (tmp != ETIME)
{
error = tmp;
}
else
error = EWOULDBLOCK;
}
else
result = 0;
#else /* ACE_WIN32 */
error = EWOULDBLOCK;
#endif /* ACE_WIN32 */
}
// Wait synchronously using timeout.
else if (this->complete (new_stream, 0, timeout) == -1)
error = errno;
else
return 0;
}
}
// EISCONN is treated specially since this routine may be used to
// check if we are already connected.
if (result != -1 || error == EISCONN)
{
// Start out with non-blocking disabled on the new_stream.
result = new_stream.disable (ACE_NONBLOCK);
if (result == -1)
{
new_stream.close ();
}
}
else if (!(error == EWOULDBLOCK || error == ETIMEDOUT))
{
new_stream.close ();
}
return result;
}
// Actively connect and produce a new ACE_SOCK_Stream if things go well...
int
ACE_SOCK_Connector::connect (ACE_SOCK_Stream &new_stream,
const ACE_Addr &remote_sap,
const ACE_Time_Value *timeout,
const ACE_Addr &local_sap,
int reuse_addr,
int /* flags */,
int /* perms */,
int protocol)
{
ACE_TRACE ("ACE_SOCK_Connector::connect");
if (this->shared_open (new_stream,
remote_sap.get_type (),
protocol,
reuse_addr) == -1)
return -1;
else if (this->shared_connect_start (new_stream,
timeout,
local_sap) == -1)
return -1;
#if defined(ACE_WIN32) && defined(ACE_HAS_IPV6)
// On windows, the IPv4-mapped IPv6 address format can only be used on a dual-stack socket.
const ACE_INET_Addr& remote_address = static_cast<const ACE_INET_Addr&>(remote_sap);
if (remote_address.is_ipv4_mapped_ipv6()) {
int zero = 0;
ACE_OS::setsockopt(new_stream.get_handle(),
IPPROTO_IPV6,
IPV6_V6ONLY,
(char *)&zero,
sizeof(zero));
}
#endif
int result = ACE_OS::connect (new_stream.get_handle (),
reinterpret_cast<sockaddr *> (remote_sap.get_addr ()),
remote_sap.get_size ());
return this->shared_connect_finish (new_stream, timeout, result);
}
#if !defined (ACE_HAS_WINCE)
int
ACE_SOCK_Connector::connect (ACE_SOCK_Stream &new_stream,
const ACE_Addr &remote_sap,
ACE_QoS_Params qos_params,
const ACE_Time_Value *timeout,
const ACE_Addr &local_sap,
ACE_Protocol_Info * protocolinfo,
ACE_SOCK_GROUP g,
u_long flags,
int reuse_addr,
int /* perms */)
{
ACE_TRACE ("ACE_SOCK_Connector::connect");
if (this->shared_open (new_stream,
remote_sap.get_type (),
0,
protocolinfo,
g,
flags,
reuse_addr) == -1)
return -1;
else if (this->shared_connect_start (new_stream,
timeout,
local_sap) == -1)
return -1;
#if defined(ACE_WIN32) && defined(ACE_HAS_IPV6)
// On windows, the IPv4-mapped IPv6 address format can only be used on a dual-stack socket.
const ACE_INET_Addr& remote_address = static_cast<const ACE_INET_Addr&>(remote_sap);
if (remote_address.is_ipv4_mapped_ipv6()) {
int zero = 0;
ACE_OS::setsockopt(new_stream.get_handle(),
IPPROTO_IPV6,
IPV6_V6ONLY,
(char *)&zero,
sizeof(zero));
}
#endif
int result = ACE_OS::connect (new_stream.get_handle (),
reinterpret_cast<sockaddr *> (remote_sap.get_addr ()),
remote_sap.get_size (),
qos_params);
return this->shared_connect_finish (new_stream, timeout, result);
}
#endif // ACE_HAS_WINCE
// Try to complete a non-blocking connection.
int
ACE_SOCK_Connector::complete (ACE_SOCK_Stream &new_stream,
ACE_Addr *remote_sap,
const ACE_Time_Value *tv)
{
ACE_TRACE ("ACE_SOCK_Connector::complete");
ACE_HANDLE h = ACE::handle_timed_complete (new_stream.get_handle (), tv);
// We failed to get connected.
if (h == ACE_INVALID_HANDLE)
{
#if defined (ACE_NON_BLOCKING_BUG_DELAY) && ACE_NON_BLOCKING_BUG_DELAY > 0
// Win32 has a timing problem - if you check to see if the
// connection has completed too fast, it will fail - so wait
// <ACE_NON_BLOCKING_BUG_DELAY> microseconds to let it catch up
// then retry to see if it's a real failure.
ACE_Time_Value time (0, ACE_NON_BLOCKING_BUG_DELAY);
ACE_OS::sleep (time);
h = ACE::handle_timed_complete (new_stream.get_handle (), tv);
if (h == ACE_INVALID_HANDLE)
{
#endif /* ACE_NON_BLOCKING_BUG_DELAY */
// Save/restore errno.
ACE_Errno_Guard error (errno);
new_stream.close ();
return -1;
#if defined (ACE_NON_BLOCKING_BUG_DELAY) && ACE_NON_BLOCKING_BUG_DELAY > 0
}
#endif /* ACE_NON_BLOCKING_BUG_DELAY */
}
if (remote_sap != 0)
{
int len = remote_sap->get_size ();
sockaddr *addr = reinterpret_cast<sockaddr *> (remote_sap->get_addr ());
if (ACE_OS::getpeername (h,
addr,
&len) == -1)
{
// Save/restore errno.
ACE_Errno_Guard error (errno);
new_stream.close ();
return -1;
}
}
// Start out with non-blocking disabled on the <new_stream>.
new_stream.disable (ACE_NONBLOCK);
return 0;
}
ACE_SOCK_Connector::ACE_SOCK_Connector (ACE_SOCK_Stream &new_stream,
const ACE_Addr &remote_sap,
const ACE_Time_Value *timeout,
const ACE_Addr &local_sap,
int reuse_addr,
int flags,
int perms,
int protocol)
{
ACE_TRACE ("ACE_SOCK_Connector::ACE_SOCK_Connector");
if (this->connect (new_stream,
remote_sap,
timeout,
local_sap,
reuse_addr,
flags,
perms,
protocol) == -1
&& timeout != 0
&& !(errno == EWOULDBLOCK || errno == ETIME || errno == ETIMEDOUT))
ACELIB_ERROR ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("ACE_SOCK_Connector::ACE_SOCK_Connector")));
}
#if !defined (ACE_HAS_WINCE)
ACE_SOCK_Connector::ACE_SOCK_Connector (ACE_SOCK_Stream &new_stream,
const ACE_Addr &remote_sap,
ACE_QoS_Params qos_params,
const ACE_Time_Value *timeout,
const ACE_Addr &local_sap,
ACE_Protocol_Info *protocolinfo,
ACE_SOCK_GROUP g,
u_long flags,
int reuse_addr,
int perms)
{
ACE_TRACE ("ACE_SOCK_Connector::ACE_SOCK_Connector");
if (this->connect (new_stream,
remote_sap,
qos_params,
timeout,
local_sap,
protocolinfo,
g,
flags,
reuse_addr,
perms) == -1
&& timeout != 0
&& !(errno == EWOULDBLOCK || errno == ETIME || errno == ETIMEDOUT))
ACELIB_ERROR ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("ACE_SOCK_Connector::ACE_SOCK_Connector")));
}
#endif // ACE_HAS_WINCE
ACE_END_VERSIONED_NAMESPACE_DECL
|
