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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_FRAMER_H_ | 5 #ifndef NET_QUIC_QUIC_FRAMER_H_ |
6 #define NET_QUIC_QUIC_FRAMER_H_ | 6 #define NET_QUIC_QUIC_FRAMER_H_ |
7 | 7 |
8 #include <vector> | 8 #include <vector> |
9 | 9 |
10 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
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65 // version of the |framer_| to |received_version| or false to stop processing | 65 // version of the |framer_| to |received_version| or false to stop processing |
66 // this packet. | 66 // this packet. |
67 virtual bool OnProtocolVersionMismatch(QuicVersion received_version) = 0; | 67 virtual bool OnProtocolVersionMismatch(QuicVersion received_version) = 0; |
68 | 68 |
69 // Called when a new packet has been received, before it | 69 // Called when a new packet has been received, before it |
70 // has been validated or processed. | 70 // has been validated or processed. |
71 virtual void OnPacket() = 0; | 71 virtual void OnPacket() = 0; |
72 | 72 |
73 // Called when a public reset packet has been parsed but has not yet | 73 // Called when a public reset packet has been parsed but has not yet |
74 // been validated. | 74 // been validated. |
75 virtual void OnPublicResetPacket( | 75 virtual void OnPublicResetPacket(const QuicPublicResetPacket& packet) = 0; |
76 const QuicPublicResetPacket& packet) = 0; | |
77 | 76 |
78 // Called only when |is_server_| is false and a version negotiation packet has | 77 // Called only when |is_server_| is false and a version negotiation packet has |
79 // been parsed. | 78 // been parsed. |
80 virtual void OnVersionNegotiationPacket( | 79 virtual void OnVersionNegotiationPacket( |
81 const QuicVersionNegotiationPacket& packet) = 0; | 80 const QuicVersionNegotiationPacket& packet) = 0; |
82 | 81 |
83 // Called when a lost packet has been recovered via FEC, | 82 // Called when a lost packet has been recovered via FEC, |
84 // before it has been processed. | 83 // before it has been processed. |
85 virtual void OnRevivedPacket() = 0; | 84 virtual void OnRevivedPacket() = 0; |
86 | 85 |
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187 | 186 |
188 virtual ~QuicFramer(); | 187 virtual ~QuicFramer(); |
189 | 188 |
190 // Returns true if |version| is a supported protocol version. | 189 // Returns true if |version| is a supported protocol version. |
191 bool IsSupportedVersion(const QuicVersion version) const; | 190 bool IsSupportedVersion(const QuicVersion version) const; |
192 | 191 |
193 // Set callbacks to be called from the framer. A visitor must be set, or | 192 // Set callbacks to be called from the framer. A visitor must be set, or |
194 // else the framer will likely crash. It is acceptable for the visitor | 193 // else the framer will likely crash. It is acceptable for the visitor |
195 // to do nothing. If this is called multiple times, only the last visitor | 194 // to do nothing. If this is called multiple times, only the last visitor |
196 // will be used. | 195 // will be used. |
197 void set_visitor(QuicFramerVisitorInterface* visitor) { | 196 void set_visitor(QuicFramerVisitorInterface* visitor) { visitor_ = visitor; } |
198 visitor_ = visitor; | |
199 } | |
200 | 197 |
201 // Set a builder to be called from the framer when building FEC protected | 198 // Set a builder to be called from the framer when building FEC protected |
202 // packets. If this is called multiple times, only the last builder | 199 // packets. If this is called multiple times, only the last builder |
203 // will be used. The builder need not be set. | 200 // will be used. The builder need not be set. |
204 void set_fec_builder(QuicFecBuilderInterface* builder) { | 201 void set_fec_builder(QuicFecBuilderInterface* builder) { |
205 fec_builder_ = builder; | 202 fec_builder_ = builder; |
206 } | 203 } |
207 | 204 |
208 const QuicVersionVector& supported_versions() const { | 205 const QuicVersionVector& supported_versions() const { |
209 return supported_versions_; | 206 return supported_versions_; |
210 } | 207 } |
211 | 208 |
212 QuicVersion version() const { | 209 QuicVersion version() const { return quic_version_; } |
213 return quic_version_; | |
214 } | |
215 | 210 |
216 void set_version(const QuicVersion version); | 211 void set_version(const QuicVersion version); |
217 | 212 |
218 // Does not DCHECK for supported version. Used by tests to set unsupported | 213 // Does not DCHECK for supported version. Used by tests to set unsupported |
219 // version to trigger version negotiation. | 214 // version to trigger version negotiation. |
220 void set_version_for_tests(const QuicVersion version) { | 215 void set_version_for_tests(const QuicVersion version) { |
221 quic_version_ = version; | 216 quic_version_ = version; |
222 } | 217 } |
223 | 218 |
224 // Set entropy calculator to be called from the framer when it needs the | 219 // Set entropy calculator to be called from the framer when it needs the |
225 // entropy of a truncated ack frame. An entropy calculator must be set or else | 220 // entropy of a truncated ack frame. An entropy calculator must be set or else |
226 // the framer will likely crash. If this is called multiple times, only the | 221 // the framer will likely crash. If this is called multiple times, only the |
227 // last calculator will be used. | 222 // last calculator will be used. |
228 void set_received_entropy_calculator( | 223 void set_received_entropy_calculator( |
229 QuicReceivedEntropyHashCalculatorInterface* entropy_calculator) { | 224 QuicReceivedEntropyHashCalculatorInterface* entropy_calculator) { |
230 entropy_calculator_ = entropy_calculator; | 225 entropy_calculator_ = entropy_calculator; |
231 } | 226 } |
232 | 227 |
233 QuicErrorCode error() const { | 228 QuicErrorCode error() const { return error_; } |
234 return error_; | |
235 } | |
236 | 229 |
237 // Pass a UDP packet into the framer for parsing. | 230 // Pass a UDP packet into the framer for parsing. |
238 // Return true if the packet was processed succesfully. |packet| must be a | 231 // Return true if the packet was processed succesfully. |packet| must be a |
239 // single, complete UDP packet (not a frame of a packet). This packet | 232 // single, complete UDP packet (not a frame of a packet). This packet |
240 // might be null padded past the end of the payload, which will be correctly | 233 // might be null padded past the end of the payload, which will be correctly |
241 // ignored. | 234 // ignored. |
242 bool ProcessPacket(const QuicEncryptedPacket& packet); | 235 bool ProcessPacket(const QuicEncryptedPacket& packet); |
243 | 236 |
244 // Pass a data packet that was revived from FEC data into the framer | 237 // Pass a data packet that was revived from FEC data into the framer |
245 // for parsing. | 238 // for parsing. |
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475 bool AppendConnectionCloseFrame(const QuicConnectionCloseFrame& frame, | 468 bool AppendConnectionCloseFrame(const QuicConnectionCloseFrame& frame, |
476 QuicDataWriter* builder); | 469 QuicDataWriter* builder); |
477 bool AppendGoAwayFrame(const QuicGoAwayFrame& frame, QuicDataWriter* writer); | 470 bool AppendGoAwayFrame(const QuicGoAwayFrame& frame, QuicDataWriter* writer); |
478 bool AppendWindowUpdateFrame(const QuicWindowUpdateFrame& frame, | 471 bool AppendWindowUpdateFrame(const QuicWindowUpdateFrame& frame, |
479 QuicDataWriter* writer); | 472 QuicDataWriter* writer); |
480 bool AppendBlockedFrame(const QuicBlockedFrame& frame, | 473 bool AppendBlockedFrame(const QuicBlockedFrame& frame, |
481 QuicDataWriter* writer); | 474 QuicDataWriter* writer); |
482 | 475 |
483 bool RaiseError(QuicErrorCode error); | 476 bool RaiseError(QuicErrorCode error); |
484 | 477 |
485 void set_error(QuicErrorCode error) { | 478 void set_error(QuicErrorCode error) { error_ = error; } |
486 error_ = error; | |
487 } | |
488 | 479 |
489 void set_detailed_error(const char* error) { | 480 void set_detailed_error(const char* error) { detailed_error_ = error; } |
490 detailed_error_ = error; | |
491 } | |
492 | 481 |
493 std::string detailed_error_; | 482 std::string detailed_error_; |
494 scoped_ptr<QuicDataReader> reader_; | 483 scoped_ptr<QuicDataReader> reader_; |
495 QuicFramerVisitorInterface* visitor_; | 484 QuicFramerVisitorInterface* visitor_; |
496 QuicFecBuilderInterface* fec_builder_; | 485 QuicFecBuilderInterface* fec_builder_; |
497 QuicReceivedEntropyHashCalculatorInterface* entropy_calculator_; | 486 QuicReceivedEntropyHashCalculatorInterface* entropy_calculator_; |
498 QuicErrorCode error_; | 487 QuicErrorCode error_; |
499 // Updated by ProcessPacketHeader when it succeeds. | 488 // Updated by ProcessPacketHeader when it succeeds. |
500 QuicPacketSequenceNumber last_sequence_number_; | 489 QuicPacketSequenceNumber last_sequence_number_; |
501 // Updated by WritePacketHeader. | 490 // Updated by WritePacketHeader. |
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531 // The time this frames was created. Time written to the wire will be | 520 // The time this frames was created. Time written to the wire will be |
532 // written as a delta from this value. | 521 // written as a delta from this value. |
533 QuicTime creation_time_; | 522 QuicTime creation_time_; |
534 | 523 |
535 DISALLOW_COPY_AND_ASSIGN(QuicFramer); | 524 DISALLOW_COPY_AND_ASSIGN(QuicFramer); |
536 }; | 525 }; |
537 | 526 |
538 } // namespace net | 527 } // namespace net |
539 | 528 |
540 #endif // NET_QUIC_QUIC_FRAMER_H_ | 529 #endif // NET_QUIC_QUIC_FRAMER_H_ |
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