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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_QUIC_QUIC_STREAM_SEQUENCER_H_ | 5 #ifndef NET_QUIC_QUIC_STREAM_SEQUENCER_H_ |
| 6 #define NET_QUIC_QUIC_STREAM_SEQUENCER_H_ | 6 #define NET_QUIC_QUIC_STREAM_SEQUENCER_H_ |
| 7 | 7 |
| 8 #include <map> | 8 #include <map> |
| 9 | 9 |
| 10 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
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| 26 | 26 |
| 27 // Buffers frames until we have something which can be passed | 27 // Buffers frames until we have something which can be passed |
| 28 // up to the next layer. | 28 // up to the next layer. |
| 29 // TOOD(alyssar) add some checks for overflow attempts [1, 256,] [2, 256] | 29 // TOOD(alyssar) add some checks for overflow attempts [1, 256,] [2, 256] |
| 30 class NET_EXPORT_PRIVATE QuicStreamSequencer { | 30 class NET_EXPORT_PRIVATE QuicStreamSequencer { |
| 31 public: | 31 public: |
| 32 explicit QuicStreamSequencer(ReliableQuicStream* quic_stream); | 32 explicit QuicStreamSequencer(ReliableQuicStream* quic_stream); |
| 33 QuicStreamSequencer(size_t max_frame_memory, | 33 QuicStreamSequencer(size_t max_frame_memory, |
| 34 ReliableQuicStream* quic_stream); | 34 ReliableQuicStream* quic_stream); |
| 35 | 35 |
| 36 virtual ~QuicStreamSequencer(); | 36 virtual ~QuicStreamSequencer() ; |
| 37 | 37 |
| 38 // Returns the expected value of OnStreamFrame for this frame. | 38 // Returns the expected value of OnStreamFrame for this frame. |
| 39 bool WillAcceptStreamFrame(const QuicStreamFrame& frame) const; | 39 bool WillAcceptStreamFrame(const QuicStreamFrame& frame) const; |
| 40 | 40 |
| 41 // If the frame is the next one we need in order to process in-order data, | 41 // If the frame is the next one we need in order to process in-order data, |
| 42 // ProcessData will be immediately called on the stream until all buffered | 42 // ProcessData will be immediately called on the stream until all buffered |
| 43 // data is processed or the stream fails to consume data. Any unconsumed | 43 // data is processed or the stream fails to consume data. Any unconsumed |
| 44 // data will be buffered. | 44 // data will be buffered. |
| 45 // | 45 // |
| 46 // If the frame is not the next in line, it will either be buffered, and | 46 // If the frame is not the next in line, it will either be buffered, and |
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| 95 size_t max_frame_memory_; // the maximum memory the sequencer can buffer. | 95 size_t max_frame_memory_; // the maximum memory the sequencer can buffer. |
| 96 // The offset, if any, we got a stream termination for. When this many bytes | 96 // The offset, if any, we got a stream termination for. When this many bytes |
| 97 // have been processed, the sequencer will be closed. | 97 // have been processed, the sequencer will be closed. |
| 98 QuicStreamOffset close_offset_; | 98 QuicStreamOffset close_offset_; |
| 99 bool blocked_; | 99 bool blocked_; |
| 100 }; | 100 }; |
| 101 | 101 |
| 102 } // namespace net | 102 } // namespace net |
| 103 | 103 |
| 104 #endif // NET_QUIC_QUIC_STREAM_SEQUENCER_H_ | 104 #endif // NET_QUIC_QUIC_STREAM_SEQUENCER_H_ |
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