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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 #ifndef NET_URL_REQUEST_URL_REQUEST_THROTTLER_ENTRY_INTERFACE_H_ | 5 #ifndef NET_URL_REQUEST_URL_REQUEST_THROTTLER_ENTRY_INTERFACE_H_ |
6 #define NET_URL_REQUEST_URL_REQUEST_THROTTLER_ENTRY_INTERFACE_H_ | 6 #define NET_URL_REQUEST_URL_REQUEST_THROTTLER_ENTRY_INTERFACE_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 | 9 |
10 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
11 #include "base/memory/ref_counted.h" | 11 #include "base/memory/ref_counted.h" |
12 #include "base/time/time.h" | 12 #include "base/time/time.h" |
13 #include "net/base/net_export.h" | 13 #include "net/base/net_export.h" |
14 | 14 |
15 namespace net { | 15 namespace net { |
16 | 16 |
| 17 class NetworkDelegate; |
17 class URLRequest; | 18 class URLRequest; |
18 class URLRequestThrottlerHeaderInterface; | 19 class URLRequestThrottlerHeaderInterface; |
19 | 20 |
20 // Interface provided on entries of the URL request throttler manager. | 21 // Interface provided on entries of the URL request throttler manager. |
21 class NET_EXPORT URLRequestThrottlerEntryInterface | 22 class NET_EXPORT URLRequestThrottlerEntryInterface |
22 : public base::RefCountedThreadSafe<URLRequestThrottlerEntryInterface> { | 23 : public base::RefCountedThreadSafe<URLRequestThrottlerEntryInterface> { |
23 public: | 24 public: |
24 URLRequestThrottlerEntryInterface() {} | 25 URLRequestThrottlerEntryInterface() {} |
25 | 26 |
26 // Returns true when we have encountered server errors and are doing | 27 // Returns true when we have encountered server errors and are doing |
27 // exponential back-off, unless the request has load flags that mean | 28 // exponential back-off, unless the request has load flags that mean |
28 // it is likely to be user-initiated, or the NetworkDelegate returns | 29 // it is likely to be user-initiated, or the NetworkDelegate returns |
29 // false for |CanThrottleRequest(request)|. | 30 // false for |CanThrottleRequest(request)|. |
30 // | 31 // |
31 // URLRequestHttpJob checks this method prior to every request; it | 32 // URLRequestHttpJob checks this method prior to every request; it |
32 // cancels requests if this method returns true. | 33 // cancels requests if this method returns true. |
33 virtual bool ShouldRejectRequest(const URLRequest& request) const = 0; | 34 virtual bool ShouldRejectRequest( |
| 35 const URLRequest& request, |
| 36 NetworkDelegate* network_delegate) const = 0; |
34 | 37 |
35 // Calculates a recommended sending time for the next request and reserves it. | 38 // Calculates a recommended sending time for the next request and reserves it. |
36 // The sending time is not earlier than the current exponential back-off | 39 // The sending time is not earlier than the current exponential back-off |
37 // release time or |earliest_time|. Moreover, the previous results of | 40 // release time or |earliest_time|. Moreover, the previous results of |
38 // the method are taken into account, in order to make sure they are spread | 41 // the method are taken into account, in order to make sure they are spread |
39 // properly over time. | 42 // properly over time. |
40 // Returns the recommended delay before sending the next request, in | 43 // Returns the recommended delay before sending the next request, in |
41 // milliseconds. The return value is always positive or 0. | 44 // milliseconds. The return value is always positive or 0. |
42 // Although it is not mandatory, respecting the value returned by this method | 45 // Although it is not mandatory, respecting the value returned by this method |
43 // is helpful to avoid traffic overload. | 46 // is helpful to avoid traffic overload. |
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64 virtual ~URLRequestThrottlerEntryInterface() {} | 67 virtual ~URLRequestThrottlerEntryInterface() {} |
65 | 68 |
66 private: | 69 private: |
67 friend class base::RefCounted<URLRequestThrottlerEntryInterface>; | 70 friend class base::RefCounted<URLRequestThrottlerEntryInterface>; |
68 DISALLOW_COPY_AND_ASSIGN(URLRequestThrottlerEntryInterface); | 71 DISALLOW_COPY_AND_ASSIGN(URLRequestThrottlerEntryInterface); |
69 }; | 72 }; |
70 | 73 |
71 } // namespace net | 74 } // namespace net |
72 | 75 |
73 #endif // NET_URL_REQUEST_URL_REQUEST_THROTTLER_ENTRY_INTERFACE_H_ | 76 #endif // NET_URL_REQUEST_URL_REQUEST_THROTTLER_ENTRY_INTERFACE_H_ |
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