1 // Copyright 2014 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 "components/gcm_driver/gcm_backoff_policy.h" 6 7 namespace gcm { 8 9 namespace { 10 11 // Backoff policy. Shared across GCM requests. 12 // Note: In order to ensure a minimum of 20 seconds between server errors (for 13 // server reasons), we have a 30s +- 10s (33%) jitter initial backoff. 14 const net::BackoffEntry::Policy kDefaultBackoffPolicy = { 15 // Number of initial errors (in sequence) to ignore before applying 16 // exponential back-off rules. 17 0, 18 19 // Initial delay for exponential back-off in ms. 20 30 * 1000, // 30 seconds. 21 22 // Factor by which the waiting time will be multiplied. 23 2, 24 25 // Fuzzing percentage. ex: 10% will spread requests randomly 26 // between 90%-100% of the calculated time. 27 0.33, // 33%. 28 29 // Maximum amount of time we are willing to delay our request in ms. 30 10 * 60 * 1000, // 10 minutes. 31 32 // Time to keep an entry from being discarded even when it 33 // has no significant state, -1 to never discard. 34 -1, 35 36 // Don't use initial delay unless the last request was an error. 37 false, 38 }; 39 40 } // namespace 41 42 const net::BackoffEntry::Policy& GetGCMBackoffPolicy() { 43 return kDefaultBackoffPolicy; 44 } 45 46 } // namespace gcm 47
