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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "base/basictypes.h" | |
| 6 #include "chrome/browser/sync/engine/polling_constants.h" | |
| 7 | |
| 8 namespace browser_sync { | |
| 9 | |
| 10 // Server can overwrite these values via client commands. | |
| 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 | |
| 13 // the server doesn't result in rapid-fire polling from the client due to low | |
| 14 // local limits. | |
| 15 const int64 kDefaultShortPollIntervalSeconds = 3600 * 8; | |
| 16 // Long poll is used when XMPP is on. | |
| 17 const int64 kDefaultLongPollIntervalSeconds = 3600 * 12; | |
| 18 | |
| 19 // Maximum interval for exponential backoff. | |
| 20 const int64 kMaxBackoffSeconds = 60 * 60 * 4; // 4 hours. | |
| 21 | |
| 22 // Backoff interval randomization factor. | |
| 23 const int kBackoffRandomizationFactor = 2; | |
| 24 | |
| 25 } // namespace browser_sync | |
| 26 | |
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