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Side by Side Diff: net/url_request/url_request_throttler_entry.h

Issue 7529043: Rename NET_API to NET_EXPORT, and rename NET_TEST to NET_EXPORT_PRIVATE. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: '' Created 9 years, 4 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 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_H_ 5 #ifndef NET_URL_REQUEST_URL_REQUEST_THROTTLER_ENTRY_H_
6 #define NET_URL_REQUEST_URL_REQUEST_THROTTLER_ENTRY_H_ 6 #define NET_URL_REQUEST_URL_REQUEST_THROTTLER_ENTRY_H_
7 #pragma once 7 #pragma once
8 8
9 #include <queue> 9 #include <queue>
10 #include <string> 10 #include <string>
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23 // It analyzes requests of a specific URL over some period of time, in order to 23 // It analyzes requests of a specific URL over some period of time, in order to
24 // deduce the back-off time for every request. 24 // deduce the back-off time for every request.
25 // The back-off algorithm consists of two parts. Firstly, exponential back-off 25 // The back-off algorithm consists of two parts. Firstly, exponential back-off
26 // is used when receiving 5XX server errors or malformed response bodies. 26 // is used when receiving 5XX server errors or malformed response bodies.
27 // The exponential back-off rule is enforced by URLRequestHttpJob. Any 27 // The exponential back-off rule is enforced by URLRequestHttpJob. Any
28 // request sent during the back-off period will be cancelled. 28 // request sent during the back-off period will be cancelled.
29 // Secondly, a sliding window is used to count recent requests to a given 29 // Secondly, a sliding window is used to count recent requests to a given
30 // destination and provide guidance (to the application level only) on whether 30 // destination and provide guidance (to the application level only) on whether
31 // too many requests have been sent and when a good time to send the next one 31 // too many requests have been sent and when a good time to send the next one
32 // would be. This is never used to deny requests at the network level. 32 // would be. This is never used to deny requests at the network level.
33 class NET_API URLRequestThrottlerEntry 33 class NET_EXPORT URLRequestThrottlerEntry
34 : public URLRequestThrottlerEntryInterface { 34 : public URLRequestThrottlerEntryInterface {
35 public: 35 public:
36 // Sliding window period. 36 // Sliding window period.
37 static const int kDefaultSlidingWindowPeriodMs; 37 static const int kDefaultSlidingWindowPeriodMs;
38 38
39 // Maximum number of requests allowed in sliding window period. 39 // Maximum number of requests allowed in sliding window period.
40 static const int kDefaultMaxSendThreshold; 40 static const int kDefaultMaxSendThreshold;
41 41
42 // Number of initial errors to ignore before starting exponential back-off. 42 // Number of initial errors to ignore before starting exponential back-off.
43 static const int kDefaultNumErrorsToIgnore; 43 static const int kDefaultNumErrorsToIgnore;
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182 std::string url_id_; 182 std::string url_id_;
183 183
184 BoundNetLog net_log_; 184 BoundNetLog net_log_;
185 185
186 DISALLOW_COPY_AND_ASSIGN(URLRequestThrottlerEntry); 186 DISALLOW_COPY_AND_ASSIGN(URLRequestThrottlerEntry);
187 }; 187 };
188 188
189 } // namespace net 189 } // namespace net
190 190
191 #endif // NET_URL_REQUEST_URL_REQUEST_THROTTLER_ENTRY_H_ 191 #endif // NET_URL_REQUEST_URL_REQUEST_THROTTLER_ENTRY_H_
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