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1 // Copyright (c) 2012 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 <stdint.h> |
| 6 |
6 #include "sync/internal_api/public/engine/polling_constants.h" | 7 #include "sync/internal_api/public/engine/polling_constants.h" |
7 | 8 |
8 namespace syncer { | 9 namespace syncer { |
9 | 10 |
10 // Server can overwrite these values via client commands. | 11 // Server can overwrite these values via client commands. |
11 // Standard short poll. This is used when XMPP is off. | 12 // 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 // 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 // the server doesn't result in rapid-fire polling from the client due to low |
14 // local limits. | 15 // local limits. |
15 const int64 kDefaultShortPollIntervalSeconds = 3600 * 8; | 16 const int64_t kDefaultShortPollIntervalSeconds = 3600 * 8; |
16 // Long poll is used when XMPP is on. | 17 // Long poll is used when XMPP is on. |
17 const int64 kDefaultLongPollIntervalSeconds = 3600 * 12; | 18 const int64_t kDefaultLongPollIntervalSeconds = 3600 * 12; |
18 | 19 |
19 // Maximum interval for exponential backoff. | 20 // Maximum interval for exponential backoff. |
20 const int64 kMaxBackoffSeconds = 60 * 10; // 10 minutes. | 21 const int64_t kMaxBackoffSeconds = 60 * 10; // 10 minutes. |
21 | 22 |
22 // Backoff interval randomization factor. | 23 // Backoff interval randomization factor. |
23 const int kBackoffRandomizationFactor = 2; | 24 const int kBackoffRandomizationFactor = 2; |
24 | 25 |
25 // After a failure contacting sync servers, specifies how long to wait before | 26 // After a failure contacting sync servers, specifies how long to wait before |
26 // reattempting and entering exponential backoff if consecutive failures | 27 // reattempting and entering exponential backoff if consecutive failures |
27 // occur. | 28 // occur. |
28 const int kInitialBackoffRetrySeconds = 30; // 30 seconds. | 29 const int kInitialBackoffRetrySeconds = 30; // 30 seconds. |
29 | 30 |
30 // A dangerously short retry value that would not actually protect servers from | 31 // A dangerously short retry value that would not actually protect servers from |
31 // DDoS if it were used as a seed for exponential backoff, although the client | 32 // DDoS if it were used as a seed for exponential backoff, although the client |
32 // would still follow exponential backoff. Useful for debugging and tests (when | 33 // would still follow exponential backoff. Useful for debugging and tests (when |
33 // you don't want to wait 5 minutes). | 34 // you don't want to wait 5 minutes). |
34 const int kInitialBackoffShortRetrySeconds = 1; | 35 const int kInitialBackoffShortRetrySeconds = 1; |
35 | 36 |
36 // Similar to kInitialBackoffRetrySeconds above, but only to be used in | 37 // Similar to kInitialBackoffRetrySeconds above, but only to be used in |
37 // certain exceptional error cases, such as MIGRATION_DONE. | 38 // certain exceptional error cases, such as MIGRATION_DONE. |
38 const int kInitialBackoffImmediateRetrySeconds = 0; | 39 const int kInitialBackoffImmediateRetrySeconds = 0; |
39 | 40 |
40 } // namespace syncer | 41 } // namespace syncer |
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