OLD | NEW |
1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "net/base/network_change_notifier_win.h" | 5 #include "net/base/network_change_notifier_win.h" |
6 | 6 |
7 #include <iphlpapi.h> | 7 #include <iphlpapi.h> |
8 #include <winsock2.h> | 8 #include <winsock2.h> |
9 | 9 |
10 #include "base/logging.h" | 10 #include "base/logging.h" |
| 11 #include "base/time.h" |
11 #include "net/base/winsock_init.h" | 12 #include "net/base/winsock_init.h" |
12 | 13 |
13 #pragma comment(lib, "iphlpapi.lib") | 14 #pragma comment(lib, "iphlpapi.lib") |
14 | 15 |
15 namespace net { | 16 namespace net { |
16 | 17 |
17 NetworkChangeNotifierWin::NetworkChangeNotifierWin() { | 18 NetworkChangeNotifierWin::NetworkChangeNotifierWin() { |
18 memset(&addr_overlapped_, 0, sizeof addr_overlapped_); | 19 memset(&addr_overlapped_, 0, sizeof addr_overlapped_); |
19 addr_overlapped_.hEvent = WSACreateEvent(); | 20 addr_overlapped_.hEvent = WSACreateEvent(); |
20 WatchForAddressChange(); | 21 WatchForAddressChange(); |
(...skipping 118 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
139 result = WSALookupServiceEnd(ws_handle); | 140 result = WSALookupServiceEnd(ws_handle); |
140 LOG_IF(ERROR, result != 0) | 141 LOG_IF(ERROR, result != 0) |
141 << "WSALookupServiceEnd() failed with: " << result; | 142 << "WSALookupServiceEnd() failed with: " << result; |
142 | 143 |
143 return !found_connection; | 144 return !found_connection; |
144 } | 145 } |
145 | 146 |
146 void NetworkChangeNotifierWin::OnObjectSignaled(HANDLE object) { | 147 void NetworkChangeNotifierWin::OnObjectSignaled(HANDLE object) { |
147 NotifyObserversOfIPAddressChange(); | 148 NotifyObserversOfIPAddressChange(); |
148 | 149 |
| 150 // Calling IsOffline() at this very moment is likely to give |
| 151 // the wrong result, so we delay that until a little bit later. |
| 152 // |
| 153 // The one second delay chosen here was determined experimentally |
| 154 // by adamk on Windows 7. |
| 155 timer_.Stop(); // cancel any already waiting notification |
| 156 timer_.Start(base::TimeDelta::FromSeconds(1), this, |
| 157 &NetworkChangeNotifierWin::NotifyParentOfOnlineStateChange); |
| 158 |
149 // Start watching for the next address change. | 159 // Start watching for the next address change. |
150 WatchForAddressChange(); | 160 WatchForAddressChange(); |
151 } | 161 } |
152 | 162 |
153 void NetworkChangeNotifierWin::WatchForAddressChange() { | 163 void NetworkChangeNotifierWin::WatchForAddressChange() { |
154 HANDLE handle = NULL; | 164 HANDLE handle = NULL; |
155 DWORD ret = NotifyAddrChange(&handle, &addr_overlapped_); | 165 DWORD ret = NotifyAddrChange(&handle, &addr_overlapped_); |
156 CHECK(ret == ERROR_IO_PENDING); | 166 CHECK(ret == ERROR_IO_PENDING); |
157 addr_watcher_.StartWatching(addr_overlapped_.hEvent, this); | 167 addr_watcher_.StartWatching(addr_overlapped_.hEvent, this); |
158 } | 168 } |
159 | 169 |
| 170 void NetworkChangeNotifierWin::NotifyParentOfOnlineStateChange() { |
| 171 NotifyObserversOfOnlineStateChange(); |
| 172 } |
| 173 |
160 } // namespace net | 174 } // namespace net |
OLD | NEW |