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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 "base/basictypes.h" | 5 #include "base/basictypes.h" |
6 #include "chrome/browser/sync/engine/polling_constants.h" | 6 #include "sync/engine/polling_constants.h" |
7 | 7 |
8 namespace browser_sync { | 8 namespace browser_sync { |
9 | 9 |
10 // Server can overwrite these values via client commands. | 10 // Server can overwrite these values via client commands. |
11 // Standard short poll. This is used when XMPP is off. | 11 // Standard short poll. This is used when XMPP is off. |
12 // We use high values here to ensure that failure to receive poll updates from | 12 // We use high values here to ensure that failure to receive poll updates from |
13 // the server doesn't result in rapid-fire polling from the client due to low | 13 // the server doesn't result in rapid-fire polling from the client due to low |
14 // local limits. | 14 // local limits. |
15 const int64 kDefaultShortPollIntervalSeconds = 3600 * 8; | 15 const int64 kDefaultShortPollIntervalSeconds = 3600 * 8; |
16 // Long poll is used when XMPP is on. | 16 // Long poll is used when XMPP is on. |
17 const int64 kDefaultLongPollIntervalSeconds = 3600 * 12; | 17 const int64 kDefaultLongPollIntervalSeconds = 3600 * 12; |
18 | 18 |
19 // Maximum interval for exponential backoff. | 19 // Maximum interval for exponential backoff. |
20 const int64 kMaxBackoffSeconds = 60 * 60 * 4; // 4 hours. | 20 const int64 kMaxBackoffSeconds = 60 * 60 * 4; // 4 hours. |
21 | 21 |
22 // Backoff interval randomization factor. | 22 // Backoff interval randomization factor. |
23 const int kBackoffRandomizationFactor = 2; | 23 const int kBackoffRandomizationFactor = 2; |
24 | 24 |
25 } // namespace browser_sync | 25 } // namespace browser_sync |
26 | 26 |
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