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
7namespace gcm {
8
9namespace {
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.
14const 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
42const net::BackoffEntry::Policy& GetGCMBackoffPolicy() {
43  return kDefaultBackoffPolicy;
44}
45
46}  // namespace gcm
47