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Side by Side Diff: net/quic/core/quic_stream_sequencer.h

Issue 2487613002: Landing Recent QUIC changes until 12:43 PM, Nov 5, 2016 UTC+8 (Closed)
Patch Set: Created 4 years, 1 month ago
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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 <stddef.h> 8 #include <stddef.h>
9 9
10 #include <map> 10 #include <map>
11 11
12 #include "base/macros.h" 12 #include "base/macros.h"
13 #include "net/base/net_export.h" 13 #include "net/base/net_export.h"
14 #include "net/quic/core/quic_protocol.h" 14 #include "net/quic/core/quic_protocol.h"
15 #include "net/quic/core/quic_stream_sequencer_buffer.h" 15 #include "net/quic/core/quic_stream_sequencer_buffer.h"
16 16
17 namespace net { 17 namespace net {
18 18
19 namespace test { 19 namespace test {
20 class QuicStreamSequencerPeer; 20 class QuicStreamSequencerPeer;
21 } // namespace test 21 } // namespace test
22 22
23 class QuicClock; 23 class QuicClock;
24 class QuicSession; 24 class QuicSession;
25 class ReliableQuicStream; 25 class QuicStream;
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 class NET_EXPORT_PRIVATE QuicStreamSequencer { 29 class NET_EXPORT_PRIVATE QuicStreamSequencer {
30 public: 30 public:
31 QuicStreamSequencer(ReliableQuicStream* quic_stream, const QuicClock* clock); 31 QuicStreamSequencer(QuicStream* quic_stream, const QuicClock* clock);
32 virtual ~QuicStreamSequencer(); 32 virtual ~QuicStreamSequencer();
33 33
34 // If the frame is the next one we need in order to process in-order data, 34 // If the frame is the next one we need in order to process in-order data,
35 // ProcessData will be immediately called on the stream until all buffered 35 // ProcessData will be immediately called on the stream until all buffered
36 // data is processed or the stream fails to consume data. Any unconsumed 36 // data is processed or the stream fails to consume data. Any unconsumed
37 // data will be buffered. If the frame is not the next in line, it will be 37 // data will be buffered. If the frame is not the next in line, it will be
38 // buffered. 38 // buffered.
39 void OnStreamFrame(const QuicStreamFrame& frame); 39 void OnStreamFrame(const QuicStreamFrame& frame);
40 40
41 // Once data is buffered, it's up to the stream to read it when the stream 41 // Once data is buffered, it's up to the stream to read it when the stream
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111 void FlushBufferedFrames(); 111 void FlushBufferedFrames();
112 112
113 // Wait until we've seen 'offset' bytes, and then terminate the stream. 113 // Wait until we've seen 'offset' bytes, and then terminate the stream.
114 void CloseStreamAtOffset(QuicStreamOffset offset); 114 void CloseStreamAtOffset(QuicStreamOffset offset);
115 115
116 // If we've received a FIN and have processed all remaining data, then inform 116 // If we've received a FIN and have processed all remaining data, then inform
117 // the stream of FIN, and clear buffers. 117 // the stream of FIN, and clear buffers.
118 bool MaybeCloseStream(); 118 bool MaybeCloseStream();
119 119
120 // The stream which owns this sequencer. 120 // The stream which owns this sequencer.
121 ReliableQuicStream* stream_; 121 QuicStream* stream_;
122 122
123 // Stores received data in offset order. 123 // Stores received data in offset order.
124 QuicStreamSequencerBuffer buffered_frames_; 124 QuicStreamSequencerBuffer buffered_frames_;
125 125
126 // The offset, if any, we got a stream termination for. When this many bytes 126 // The offset, if any, we got a stream termination for. When this many bytes
127 // have been processed, the sequencer will be closed. 127 // have been processed, the sequencer will be closed.
128 QuicStreamOffset close_offset_; 128 QuicStreamOffset close_offset_;
129 129
130 // If true, the sequencer is blocked from passing data to the stream and will 130 // If true, the sequencer is blocked from passing data to the stream and will
131 // buffer all new incoming data until FlushBufferedFrames is called. 131 // buffer all new incoming data until FlushBufferedFrames is called.
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142 142
143 // If true, all incoming data will be discarded. 143 // If true, all incoming data will be discarded.
144 bool ignore_read_data_; 144 bool ignore_read_data_;
145 145
146 DISALLOW_COPY_AND_ASSIGN(QuicStreamSequencer); 146 DISALLOW_COPY_AND_ASSIGN(QuicStreamSequencer);
147 }; 147 };
148 148
149 } // namespace net 149 } // namespace net
150 150
151 #endif // NET_QUIC_QUIC_STREAM_SEQUENCER_H_ 151 #endif // NET_QUIC_QUIC_STREAM_SEQUENCER_H_
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