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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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