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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 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 // Filter performs filtering on data streams. Sample usage: | 5 // Filter performs filtering on data streams. Sample usage: |
6 // | 6 // |
7 // IStream* pre_filter_source; | 7 // IStream* pre_filter_source; |
8 // ... | 8 // ... |
9 // std::unique_ptr<Filter> filter = Filter::Factory(filter_type, size); | 9 // std::unique_ptr<Filter> filter = Filter::Factory(filter_type, size); |
10 // int pre_filter_data_len = filter->stream_buffer_size(); | 10 // int pre_filter_data_len = filter->stream_buffer_size(); |
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56 #include "base/macros.h" | 56 #include "base/macros.h" |
57 #include "base/memory/ref_counted.h" | 57 #include "base/memory/ref_counted.h" |
58 #include "base/time/time.h" | 58 #include "base/time/time.h" |
59 #include "net/base/net_export.h" | 59 #include "net/base/net_export.h" |
60 #include "net/base/sdch_manager.h" | 60 #include "net/base/sdch_manager.h" |
61 | 61 |
62 class GURL; | 62 class GURL; |
63 | 63 |
64 namespace net { | 64 namespace net { |
65 | 65 |
66 class BoundNetLog; | 66 class NetLogWithSource; |
67 class IOBuffer; | 67 class IOBuffer; |
68 class URLRequestContext; | 68 class URLRequestContext; |
69 | 69 |
70 //------------------------------------------------------------------------------ | 70 //------------------------------------------------------------------------------ |
71 // Define an interface class that allows access to contextual information | 71 // Define an interface class that allows access to contextual information |
72 // supplied by the owner of this filter. In the case where there are a chain of | 72 // supplied by the owner of this filter. In the case where there are a chain of |
73 // filters, there is only one owner of all the chained filters, and that context | 73 // filters, there is only one owner of all the chained filters, and that context |
74 // is passed to the constructor of all those filters. To be clear, the context | 74 // is passed to the constructor of all those filters. To be clear, the context |
75 // does NOT reflect the position in a chain, or the fact that there are prior | 75 // does NOT reflect the position in a chain, or the fact that there are prior |
76 // or later filters in a chain. | 76 // or later filters in a chain. |
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121 // For example: 200 is ok. 4xx are error codes. etc. | 121 // For example: 200 is ok. 4xx are error codes. etc. |
122 virtual int GetResponseCode() const = 0; | 122 virtual int GetResponseCode() const = 0; |
123 | 123 |
124 // The URLRequestContext associated with the request. | 124 // The URLRequestContext associated with the request. |
125 virtual const URLRequestContext* GetURLRequestContext() const = 0; | 125 virtual const URLRequestContext* GetURLRequestContext() const = 0; |
126 | 126 |
127 // The following method forces the context to emit a specific set of | 127 // The following method forces the context to emit a specific set of |
128 // statistics as selected by the argument. | 128 // statistics as selected by the argument. |
129 virtual void RecordPacketStats(StatisticSelector statistic) const = 0; | 129 virtual void RecordPacketStats(StatisticSelector statistic) const = 0; |
130 | 130 |
131 // The BoundNetLog of the associated request. | 131 // The NetLogWithSource of the associated request. |
132 virtual const BoundNetLog& GetNetLog() const = 0; | 132 virtual const NetLogWithSource& GetNetLog() const = 0; |
133 }; | 133 }; |
134 | 134 |
135 //------------------------------------------------------------------------------ | 135 //------------------------------------------------------------------------------ |
136 class NET_EXPORT Filter { | 136 class NET_EXPORT Filter { |
137 public: | 137 public: |
138 // Return values of function ReadFilteredData. | 138 // Return values of function ReadFilteredData. |
139 enum FilterStatus { | 139 enum FilterStatus { |
140 // Read filtered data successfully | 140 // Read filtered data successfully |
141 FILTER_OK, | 141 FILTER_OK, |
142 // Read filtered data successfully, and the data in the buffer has been | 142 // Read filtered data successfully, and the data in the buffer has been |
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322 | 322 |
323 // The filter type this filter was constructed from. | 323 // The filter type this filter was constructed from. |
324 FilterType type_id_; | 324 FilterType type_id_; |
325 | 325 |
326 DISALLOW_COPY_AND_ASSIGN(Filter); | 326 DISALLOW_COPY_AND_ASSIGN(Filter); |
327 }; | 327 }; |
328 | 328 |
329 } // namespace net | 329 } // namespace net |
330 | 330 |
331 #endif // NET_FILTER_FILTER_H__ | 331 #endif // NET_FILTER_FILTER_H__ |
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