summaryrefslogtreecommitdiff
path: root/ace/Asynch_Connector.cpp
blob: ce7df62330b4a07dd069341ba367065f92009666 (plain)
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
/* -*- C++ -*- */
// $Id$

#ifndef ACE_ASYNCH_CONNECTOR_C
#define ACE_ASYNCH_CONNECTOR_C

#include "ace/Asynch_Connector.h"

#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */

ACE_RCSID(ace, Asynch_Connector, "$Id$")

#if defined (ACE_WIN32) || defined (ACE_HAS_AIO_CALLS)
// This only works on platforms that support async I/O.

#include "ace/Flag_Manip.h"
#include "ace/Log_Msg.h"
#include "ace/Message_Block.h"
#include "ace/INET_Addr.h"


template <class HANDLER>
ACE_Asynch_Connector<HANDLER>::ACE_Asynch_Connector (void)
  : pass_addresses_ (0),
    validate_new_connection_ (0)
{
}

template <class HANDLER>
ACE_Asynch_Connector<HANDLER>::~ACE_Asynch_Connector (void)
{
  //this->asynch_connect_.close ();
}

template <class HANDLER> int
ACE_Asynch_Connector<HANDLER>::open (int pass_addresses,
                                     ACE_Proactor *proactor,
                                     int validate_new_connection)
{
  this->proactor (proactor);
  this->pass_addresses_ = pass_addresses;
  this->validate_new_connection_ = validate_new_connection;

  // Initialize the ACE_Asynch_Connect
  if (this->asynch_connect_.open (*this,
                                  ACE_INVALID_HANDLE,
                                  0,
                                  this->proactor ()) == -1)
    ACE_ERROR_RETURN ((LM_ERROR,
                       ACE_LIB_TEXT ("%p\n"),
                       ACE_LIB_TEXT ("ACE_Asynch_Connect::open")),
                      -1);
  return 0;
}

template <class HANDLER> int
ACE_Asynch_Connector<HANDLER>::connect (const ACE_INET_Addr & remote_sap,
                                        const ACE_INET_Addr & local_sap,
                                        int reuse_addr,
                                        const void *act)
{
  // Initiate asynchronous connect
  if (this->asynch_connect_.connect (ACE_INVALID_HANDLE,
                                     remote_sap,
                                     local_sap,
                                     reuse_addr,
                                     act) == -1)
    ACE_ERROR_RETURN ((LM_ERROR,
                       ACE_LIB_TEXT ("%p\n"),
                       ACE_LIB_TEXT ("ACE_Asynch_Connect::connect")),
                      -1);
  return 0;
}

template <class HANDLER> void
ACE_Asynch_Connector<HANDLER>::handle_connect (const ACE_Asynch_Connect::Result &result)
{
  // Variable for error tracking
  int error = 0;

  // If the asynchronous connect fails.
  if (!result.success () ||
      result.connect_handle () == ACE_INVALID_HANDLE)
    {
      error = 1;
    }

  if (result.error () != 0)
    {
      error = 1;
    }

  // set blocking mode 
  if (!error &&
      ACE_Flag_Manip::clr_flags
        (result.connect_handle (), ACE_NONBLOCK) != 0)
    {
      error = 1;
      ACE_ERROR ((LM_ERROR,
                  ACE_LIB_TEXT ("%p\n"),
                  ACE_LIB_TEXT ("ACE_Asynch_Connector::handle_connect : Set blocking mode")));
    }

  // Parse the addresses.
  ACE_INET_Addr local_address;
  ACE_INET_Addr remote_address;
  if (!error &&
      (this->validate_new_connection_ || this->pass_addresses_))
    this->parse_address (result,
                         remote_address,
                         local_address);

  // Call validate_connection even if there was an error - it's the only
  // way the application can learn the connect disposition.
  if (this->validate_new_connection_ &&
      this->validate_connection (result, remote_address, local_address) == -1)
    {
      error = 1;
    }

  HANDLER *new_handler = 0;
  if (!error)
    {
      // The Template method
      new_handler = this->make_handler ();
      if (new_handler == 0)
        {
          error = 1;
          ACE_ERROR ((LM_ERROR,
                      ACE_LIB_TEXT ("%p\n"),
                      ACE_LIB_TEXT ("ACE_Asynch_Connector::handle_connect : Making of new handler failed")));
        }
    }

  // If no errors
  if (!error)
    {
      // Update the Proactor.
      new_handler->proactor (this->proactor ());

      // Pass the addresses
      if (this->pass_addresses_)
        new_handler->addresses (remote_address,
                                local_address);

      // Pass the ACT
      if (result.act () != 0)
        new_handler->act (result.act ());

      // Set up the handler's new handle value
      new_handler->handle (result.connect_handle ());

      ACE_Message_Block  mb;

      // Initiate the handler with empty message block;
      new_handler->open (result.connect_handle (), mb);
    }

  // On failure, no choice but to close the socket
  if (error &&
      result.connect_handle() != ACE_INVALID_HANDLE)
    ACE_OS::closesocket (result.connect_handle ());
}

template <class HANDLER> int
ACE_Asynch_Connector<HANDLER>::validate_connection
  (const ACE_Asynch_Connect::Result &,
   const ACE_INET_Addr & /* remote_address */,
   const ACE_INET_Addr & /* local_address */)
{
  // Default implementation always validates the remote address.
  return 0;
}

template <class HANDLER> int
ACE_Asynch_Connector<HANDLER>::cancel (void)
{
  return this->asynch_connect_.cancel ();
}

template <class HANDLER> void
ACE_Asynch_Connector<HANDLER>::parse_address (const ACE_Asynch_Connect::Result &result,
                                              ACE_INET_Addr &remote_address,
                                              ACE_INET_Addr &local_address)
{
  // Getting the addresses.
  sockaddr_in local_addr;
  sockaddr_in remote_addr;

  // Get the length.
  int local_size = sizeof (local_addr);
  int remote_size = sizeof (remote_addr);

  // Get the local address.
  if (ACE_OS::getsockname (result.connect_handle (),
                           ACE_reinterpret_cast (sockaddr *,
                                                 &local_addr),
                           &local_size) < 0)
    ACE_ERROR ((LM_ERROR,
                ACE_LIB_TEXT("%p\n"),
                ACE_LIB_TEXT("ACE_Asynch_Connector::<getsockname> failed")));

  // Get the remote address.
  if (ACE_OS::getpeername (result.connect_handle (),
                           ACE_reinterpret_cast (sockaddr *,
                                                 &remote_addr),
                           &remote_size) < 0)
    ACE_ERROR ((LM_ERROR,
                ACE_LIB_TEXT("%p\n"),
                ACE_LIB_TEXT("ACE_Asynch_Connector::<getpeername> failed")));

  // Set the addresses.
  local_address.set  (&local_addr,  local_size);
  remote_address.set (&remote_addr, remote_size);

#if 0
  // @@ Just debugging.
  char local_address_buf  [BUFSIZ];
  char remote_address_buf [BUFSIZ];

  if (local_address.addr_to_string (local_address_buf,
                                    sizeof local_address_buf) == -1)
    ACE_ERROR ((LM_ERROR,
                "Error:%p:can't obtain local_address's address string"));

  ACE_DEBUG ((LM_DEBUG,
              "ACE_Asynch_Connector<HANDLER>::parse_address : "\
              "Local address %s\n",
              local_address_buf));

  if (remote_address.addr_to_string (remote_address_buf,
                                     sizeof remote_address_buf) == -1)
    ACE_ERROR ((LM_ERROR,
                "Error:%p:can't obtain remote_address's address string"));

  ACE_DEBUG ((LM_DEBUG,
              "ACE_Asynch_Connector<HANDLER>::parse_address : "\
              "Remote address %s\n",
              remote_address_buf));
#endif /* 0 */

  return;
}


template <class HANDLER> ACE_Asynch_Connect &
ACE_Asynch_Connector<HANDLER>::asynch_connect (void)
{
  return this->asynch_connect_;
}

template <class HANDLER> HANDLER *
ACE_Asynch_Connector<HANDLER>::make_handler (void)
{
  // Default behavior
  HANDLER *handler = 0;
  ACE_NEW_RETURN (handler, HANDLER, 0);
  return handler;
}

template <class HANDLER> int
ACE_Asynch_Connector<HANDLER>::pass_addresses (void) const
{
  return this->pass_addresses_;
}

template <class HANDLER> void
ACE_Asynch_Connector<HANDLER>::pass_addresses (int new_value)
{
  this->pass_addresses_ = new_value;
}

template <class HANDLER> int
ACE_Asynch_Connector<HANDLER>::validate_new_connection (void) const
{
  return this->validate_new_connection_;
}

template <class HANDLER> void
ACE_Asynch_Connector<HANDLER>::validate_new_connection (int new_value)
{
  this->validate_new_connection_ = new_value;
}

#endif /* ACE_WIN32 || ACE_HAS_AIO_CALLS */
#endif /* ACE_ASYNCH_CONNECTOR_C */