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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 <string> |
| 8 #include <vector> | 9 #include <vector> |
| 9 | 10 |
| 10 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
| 11 #include "base/logging.h" | 12 #include "base/logging.h" |
| 12 #include "base/memory/scoped_ptr.h" | 13 #include "base/memory/scoped_ptr.h" |
| 13 #include "base/strings/string_piece.h" | 14 #include "base/strings/string_piece.h" |
| 14 #include "net/base/net_export.h" | 15 #include "net/base/net_export.h" |
| 15 #include "net/quic/quic_protocol.h" | 16 #include "net/quic/quic_protocol.h" |
| 16 | 17 |
| 17 namespace net { | 18 namespace net { |
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| 339 void SetAlternativeDecrypter(QuicDecrypter* decrypter, | 340 void SetAlternativeDecrypter(QuicDecrypter* decrypter, |
| 340 EncryptionLevel level, | 341 EncryptionLevel level, |
| 341 bool latch_once_used); | 342 bool latch_once_used); |
| 342 | 343 |
| 343 const QuicDecrypter* decrypter() const; | 344 const QuicDecrypter* decrypter() const; |
| 344 const QuicDecrypter* alternative_decrypter() const; | 345 const QuicDecrypter* alternative_decrypter() const; |
| 345 | 346 |
| 346 // Changes the encrypter used for level |level| to |encrypter|. The function | 347 // Changes the encrypter used for level |level| to |encrypter|. The function |
| 347 // takes ownership of |encrypter|. | 348 // takes ownership of |encrypter|. |
| 348 void SetEncrypter(EncryptionLevel level, QuicEncrypter* encrypter); | 349 void SetEncrypter(EncryptionLevel level, QuicEncrypter* encrypter); |
| 349 const QuicEncrypter* encrypter(EncryptionLevel level) const; | |
| 350 | 350 |
| 351 // Returns a new encrypted packet, owned by the caller. | 351 // Returns a new encrypted packet, owned by the caller. |
| 352 QuicEncryptedPacket* EncryptPacket(EncryptionLevel level, | 352 QuicEncryptedPacket* EncryptPacket(EncryptionLevel level, |
| 353 QuicPacketSequenceNumber sequence_number, | 353 QuicPacketSequenceNumber sequence_number, |
| 354 const QuicPacket& packet); | 354 const QuicPacket& packet); |
| 355 | 355 |
| 356 // Returns the maximum length of plaintext that can be encrypted | 356 // Returns the maximum length of plaintext that can be encrypted |
| 357 // to ciphertext no larger than |ciphertext_size|. | 357 // to ciphertext no larger than |ciphertext_size|. |
| 358 size_t GetMaxPlaintextSize(size_t ciphertext_size); | 358 size_t GetMaxPlaintextSize(size_t ciphertext_size); |
| 359 | 359 |
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| 453 QuicPacketSequenceNumber packet_sequence_number, | 453 QuicPacketSequenceNumber packet_sequence_number, |
| 454 QuicDataWriter* writer); | 454 QuicDataWriter* writer); |
| 455 | 455 |
| 456 static uint8 GetSequenceNumberFlags( | 456 static uint8 GetSequenceNumberFlags( |
| 457 QuicSequenceNumberLength sequence_number_length); | 457 QuicSequenceNumberLength sequence_number_length); |
| 458 | 458 |
| 459 static AckFrameInfo GetAckFrameInfo(const QuicAckFrame& frame); | 459 static AckFrameInfo GetAckFrameInfo(const QuicAckFrame& frame); |
| 460 | 460 |
| 461 // The Append* methods attempt to write the provided header or frame using the | 461 // The Append* methods attempt to write the provided header or frame using the |
| 462 // |writer|, and return true if successful. | 462 // |writer|, and return true if successful. |
| 463 |
| 464 // If header.public_header.version_flag is set, the version in the |
| 465 // packet will be set -- but it will be set from quic_version_ not |
| 466 // header.public_header.versions. |
| 463 bool AppendPacketHeader(const QuicPacketHeader& header, | 467 bool AppendPacketHeader(const QuicPacketHeader& header, |
| 464 QuicDataWriter* writer); | 468 QuicDataWriter* writer); |
| 465 bool AppendTypeByte(const QuicFrame& frame, | 469 bool AppendTypeByte(const QuicFrame& frame, |
| 466 bool last_frame_in_packet, | 470 bool last_frame_in_packet, |
| 467 QuicDataWriter* writer); | 471 QuicDataWriter* writer); |
| 468 bool AppendStreamFrame(const QuicStreamFrame& frame, | 472 bool AppendStreamFrame(const QuicStreamFrame& frame, |
| 469 bool last_frame_in_packet, | 473 bool last_frame_in_packet, |
| 470 QuicDataWriter* builder); | 474 QuicDataWriter* builder); |
| 471 bool AppendAckFrameAndTypeByte(const QuicPacketHeader& header, | 475 bool AppendAckFrameAndTypeByte(const QuicPacketHeader& header, |
| 472 const QuicAckFrame& frame, | 476 const QuicAckFrame& frame, |
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| 538 // The time delta computed for the last timestamp frame. This is relative to | 542 // The time delta computed for the last timestamp frame. This is relative to |
| 539 // the creation_time. | 543 // the creation_time. |
| 540 QuicTime::Delta last_timestamp_; | 544 QuicTime::Delta last_timestamp_; |
| 541 | 545 |
| 542 DISALLOW_COPY_AND_ASSIGN(QuicFramer); | 546 DISALLOW_COPY_AND_ASSIGN(QuicFramer); |
| 543 }; | 547 }; |
| 544 | 548 |
| 545 } // namespace net | 549 } // namespace net |
| 546 | 550 |
| 547 #endif // NET_QUIC_QUIC_FRAMER_H_ | 551 #endif // NET_QUIC_QUIC_FRAMER_H_ |
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