quic_protocol.h revision f2477e01787aa58f445919b809d89e252beef54f
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef NET_QUIC_QUIC_PROTOCOL_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define NET_QUIC_QUIC_PROTOCOL_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 82a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include <stddef.h> 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <limits> 102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include <map> 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <ostream> 122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include <set> 132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include <string> 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <utility> 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <vector> 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/basictypes.h" 187d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles)#include "base/containers/hash_tables.h" 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 20c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "base/strings/string_piece.h" 212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "net/base/int128.h" 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/base/net_export.h" 23f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#include "net/quic/iovector.h" 242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "net/quic/quic_bandwidth.h" 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/quic/quic_time.h" 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace net { 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)using ::operator<<; 302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)class QuicAckNotifier; 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class QuicPacket; 33868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)struct QuicPacketHeader; 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef uint64 QuicGuid; 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef uint32 QuicStreamId; 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef uint64 QuicStreamOffset; 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef uint64 QuicPacketSequenceNumber; 392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)typedef QuicPacketSequenceNumber QuicFecGroupNumber; 402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)typedef uint64 QuicPublicResetNonceProof; 412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)typedef uint8 QuicPacketEntropyHash; 42b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles)typedef uint32 QuicHeaderId; 43b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles)// QuicTag is the type of a tag in the wire protocol. 44b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles)typedef uint32 QuicTag; 45b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles)typedef std::vector<QuicTag> QuicTagVector; 46424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles)typedef uint32 QuicPriority; 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// TODO(rch): Consider Quic specific names for these constants. 490f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)// Default and initial maximum size in bytes of a QUIC packet. 500f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)const QuicByteCount kDefaultMaxPacketSize = 1200; 510f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)// The maximum packet size of any QUIC packet, based on ethernet's max size, 520f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)// minus the IP and UDP headers. 530f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)const QuicByteCount kMaxPacketSize = 1472; 540f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) 550f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)// Maximum size of the initial congestion window in packets. 560f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)const size_t kDefaultInitialWindow = 10; 570f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)const size_t kMaxInitialWindow = 100; 580f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) 59f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// Maximum size of the congestion window, in packets, for TCP congestion control 60f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// algorithms. 61f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)const size_t kMaxTcpCongestionWindow = 200; 62f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 630f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)// Don't allow a client to suggest an RTT longer than 15 seconds. 64f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)const size_t kMaxInitialRoundTripTimeUs = 15 * kNumMicrosPerSecond; 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Maximum number of open streams per connection. 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const size_t kDefaultMaxStreamsPerConnection = 100; 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Number of bytes reserved for public flags in the packet header. 702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const size_t kPublicFlagsSize = 1; 712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Number of bytes reserved for version number in the packet header. 722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const size_t kQuicVersionSize = 4; 732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Number of bytes reserved for private flags in the packet header. 742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const size_t kPrivateFlagsSize = 1; 752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Number of bytes reserved for FEC group in the packet header. 762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const size_t kFecGroupSize = 1; 772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Number of bytes reserved for the nonce proof in public reset packet. 782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const size_t kPublicResetNonceSize = 8; 792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Signifies that the QuicPacket will contain version of the protocol. 812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const bool kIncludeVersion = true; 822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Index of the first byte in a QUIC packet which is used in hash calculation. 842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const size_t kStartOfHashData = 0; 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Limit on the delta between stream IDs. 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const QuicStreamId kMaxStreamIdDelta = 100; 88b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles)// Limit on the delta between header IDs. 89b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles)const QuicHeaderId kMaxHeaderIdDelta = 100; 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Reserved ID for the crypto stream. 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// TODO(rch): ensure that this is not usable by any other streams. 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const QuicStreamId kCryptoStreamId = 1; 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9590dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)// This is the default network timeout a for connection till the crypto 9690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)// handshake succeeds and the negotiated timeout from the handshake is received. 97868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)const int64 kDefaultInitialTimeoutSecs = 120; // 2 mins. 9890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles)const int64 kDefaultTimeoutSecs = 60 * 10; // 10 minutes. 99868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)const int64 kDefaultMaxTimeForCryptoHandshakeSecs = 5; // 5 secs. 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1011e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)// We define an unsigned 16-bit floating point value, inspired by IEEE floats 1021e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)// (http://en.wikipedia.org/wiki/Half_precision_floating-point_format), 1031e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)// with 5-bit exponent (bias 1), 11-bit mantissa (effective 12 with hidden 1041e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)// bit) and denormals, but without signs, transfinites or fractions. Wire format 1051e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)// 16 bits (little-endian byte order) are split into exponent (high 5) and 1061e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)// mantissa (low 11) and decoded as: 1071e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)// uint64 value; 1081e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)// if (exponent == 0) value = mantissa; 1091e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)// else value = (mantissa | 1 << 11) << (exponent - 1) 1101e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)const int kUFloat16ExponentBits = 5; 1111e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)const int kUFloat16MaxExponent = (1 << kUFloat16ExponentBits) - 2; // 30 1121e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)const int kUFloat16MantissaBits = 16 - kUFloat16ExponentBits; // 11 1131e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)const int kUFloat16MantissaEffectiveBits = kUFloat16MantissaBits + 1; // 12 1141e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)const uint64 kUFloat16MaxValue = // 0x3FFC0000000 1151e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) ((GG_UINT64_C(1) << kUFloat16MantissaEffectiveBits) - 1) << 1161e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) kUFloat16MaxExponent; 1171e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) 11868043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles)enum TransmissionType { 119b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) NOT_RETRANSMISSION, 12068043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) NACK_RETRANSMISSION, 12168043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) RTO_RETRANSMISSION, 122c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)}; 123c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 124c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)enum HasRetransmittableData { 125b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) NO_RETRANSMITTABLE_DATA, 126b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) HAS_RETRANSMITTABLE_DATA, 127c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)}; 128c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 129a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles)enum IsHandshake { 130a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) NOT_HANDSHAKE, 131a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) IS_HANDSHAKE 132a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles)}; 133a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)enum QuicFrameType { 1352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PADDING_FRAME = 0, 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) RST_STREAM_FRAME, 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CONNECTION_CLOSE_FRAME, 1382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) GOAWAY_FRAME, 13958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) STREAM_FRAME, 14058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) ACK_FRAME, 14158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) CONGESTION_FEEDBACK_FRAME, 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NUM_FRAME_TYPES 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 145868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)enum QuicGuidLength { 146868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) PACKET_0BYTE_GUID = 0, 147868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) PACKET_1BYTE_GUID = 1, 148868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) PACKET_4BYTE_GUID = 4, 149868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) PACKET_8BYTE_GUID = 8 150868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)}; 151868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 152868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)enum InFecGroup { 153868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) NOT_IN_FEC_GROUP, 154868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) IN_FEC_GROUP, 155868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)}; 156868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 157868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)enum QuicSequenceNumberLength { 158868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) PACKET_1BYTE_SEQUENCE_NUMBER = 1, 159868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) PACKET_2BYTE_SEQUENCE_NUMBER = 2, 160868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) PACKET_4BYTE_SEQUENCE_NUMBER = 4, 161868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) PACKET_6BYTE_SEQUENCE_NUMBER = 6 162868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)}; 163868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 1640f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)// Used to indicate a QuicSequenceNumberLength using two flag bits. 1650f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)enum QuicSequenceNumberLengthFlags { 1660f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) PACKET_FLAGS_1BYTE_SEQUENCE = 0, // 00 1670f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) PACKET_FLAGS_2BYTE_SEQUENCE = 1, // 01 1680f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) PACKET_FLAGS_4BYTE_SEQUENCE = 1 << 1, // 10 1690f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) PACKET_FLAGS_6BYTE_SEQUENCE = 1 << 1 | 1, // 11 1700f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles)}; 1710f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) 1727dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch// The public flags are specified in one byte. 1732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)enum QuicPacketPublicFlags { 1742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PACKET_PUBLIC_FLAGS_NONE = 0, 1757dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 1767dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // Bit 0: Does the packet header contains version info? 1777dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch PACKET_PUBLIC_FLAGS_VERSION = 1 << 0, 1787dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 1797dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // Bit 1: Is this packet a public reset packet? 1807dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch PACKET_PUBLIC_FLAGS_RST = 1 << 1, 1817dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 1827dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // Bits 2 and 3 specify the length of the GUID as follows: 1837dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // ----00--: 0 bytes 1847dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // ----01--: 1 byte 1857dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // ----10--: 4 bytes 1867dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // ----11--: 8 bytes 18790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) PACKET_PUBLIC_FLAGS_0BYTE_GUID = 0, 18890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) PACKET_PUBLIC_FLAGS_1BYTE_GUID = 1 << 2, 18990dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) PACKET_PUBLIC_FLAGS_4BYTE_GUID = 1 << 3, 19090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) PACKET_PUBLIC_FLAGS_8BYTE_GUID = 1 << 3 | 1 << 2, 1917dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 1927dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // Bits 4 and 5 describe the packet sequence number length as follows: 1937dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // --00----: 1 byte 1947dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // --01----: 2 bytes 1957dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // --10----: 4 bytes 1967dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // --11----: 6 bytes 1970f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) PACKET_PUBLIC_FLAGS_1BYTE_SEQUENCE = PACKET_FLAGS_1BYTE_SEQUENCE << 4, 1980f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) PACKET_PUBLIC_FLAGS_2BYTE_SEQUENCE = PACKET_FLAGS_2BYTE_SEQUENCE << 4, 1990f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) PACKET_PUBLIC_FLAGS_4BYTE_SEQUENCE = PACKET_FLAGS_4BYTE_SEQUENCE << 4, 2000f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) PACKET_PUBLIC_FLAGS_6BYTE_SEQUENCE = PACKET_FLAGS_6BYTE_SEQUENCE << 4, 2017dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 2027dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // All bits set (bits 6 and 7 are not currently used): 00111111 2037dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch PACKET_PUBLIC_FLAGS_MAX = (1 << 6) - 1 2042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2067dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch// The private flags are specified in one byte. 2072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)enum QuicPacketPrivateFlags { 2082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PACKET_PRIVATE_FLAGS_NONE = 0, 2097dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 2107dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // Bit 0: Does this packet contain an entropy bit? 211868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) PACKET_PRIVATE_FLAGS_ENTROPY = 1 << 0, 2127dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 2137dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // Bit 1: Payload is part of an FEC group? 2147dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch PACKET_PRIVATE_FLAGS_FEC_GROUP = 1 << 1, 2157dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 2167dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // Bit 2: Payload is FEC as opposed to frames? 2177dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch PACKET_PRIVATE_FLAGS_FEC = 1 << 2, 2187dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 2197dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // All bits set (bits 3-7 are not currently used): 00000111 2207dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch PACKET_PRIVATE_FLAGS_MAX = (1 << 3) - 1 2215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 223558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// The available versions of QUIC. Guaranteed that the integer value of the enum 224558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// will match the version number. 225558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// When adding a new version to this enum you should add it to 226ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch// kSupportedQuicVersions (if appropriate), and also add a new case to the 227ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch// helper methods QuicVersionToQuicTag, QuicTagToQuicVersion, and 228ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch// QuicVersionToString. 229558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdochenum QuicVersion { 230558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch // Special case to indicate unknown/unsupported QUIC version. 231558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch QUIC_VERSION_UNSUPPORTED = 0, 232558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch 2330f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) QUIC_VERSION_12 = 12, // Current version. 234558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch}; 235558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch 236558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// This vector contains QUIC versions which we currently support. 237558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// This should be ordered such that the highest supported version is the first 238558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// element, with subsequent elements in descending order (versions can be 239558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// skipped as necessary). 240f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// 241f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// IMPORTANT: if you are addding to this list, follow the instructions at 242f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)// http://sites/quic/adding-and-removing-versions 243f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)static const QuicVersion kSupportedQuicVersions[] = {QUIC_VERSION_12}; 244558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch 245558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdochtypedef std::vector<QuicVersion> QuicVersionVector; 246558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch 2471e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)// Returns a vector of QUIC versions in kSupportedQuicVersions. 2481e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)NET_EXPORT_PRIVATE QuicVersionVector QuicSupportedVersions(); 249c2db58bd994c04d98e4ee2cd7565b71548655fe3Ben Murdoch 250558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// QuicTag is written to and read from the wire, but we prefer to use 251558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// the more readable QuicVersion at other levels. 252558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// Helper function which translates from a QuicVersion to a QuicTag. Returns 0 253558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// if QuicVersion is unsupported. 254558790d6acca3451cf3a6b497803a5f07d0bec58Ben MurdochNET_EXPORT_PRIVATE QuicTag QuicVersionToQuicTag(const QuicVersion version); 255558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch 256558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// Returns appropriate QuicVersion from a QuicTag. 257558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// Returns QUIC_VERSION_UNSUPPORTED if version_tag cannot be understood. 258558790d6acca3451cf3a6b497803a5f07d0bec58Ben MurdochNET_EXPORT_PRIVATE QuicVersion QuicTagToQuicVersion(const QuicTag version_tag); 259558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch 260558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// Helper function which translates from a QuicVersion to a string. 261558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// Returns strings corresponding to enum names (e.g. QUIC_VERSION_6). 262558790d6acca3451cf3a6b497803a5f07d0bec58Ben MurdochNET_EXPORT_PRIVATE std::string QuicVersionToString(const QuicVersion version); 263558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch 264558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// Returns comma separated list of string representations of QuicVersion enum 2651e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)// values in the supplied |versions| vector. 2661e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)NET_EXPORT_PRIVATE std::string QuicVersionVectorToString( 2671e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) const QuicVersionVector& versions); 268558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch 269558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// Version and Crypto tags are written to the wire with a big-endian 270558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// representation of the name of the tag. For example 271558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// the client hello tag (CHLO) will be written as the 272558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// following 4 bytes: 'C' 'H' 'L' 'O'. Since it is 273558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// stored in memory as a little endian uint32, we need 274558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// to reverse the order of the bytes. 275558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch 276558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// MakeQuicTag returns a value given the four bytes. For example: 277558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch// MakeQuicTag('C', 'H', 'L', 'O'); 278558790d6acca3451cf3a6b497803a5f07d0bec58Ben MurdochNET_EXPORT_PRIVATE QuicTag MakeQuicTag(char a, char b, char c, char d); 279558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch 280868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)// Size in bytes of the data or fec packet header. 281868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)NET_EXPORT_PRIVATE size_t GetPacketHeaderSize(QuicPacketHeader header); 282868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 283868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)NET_EXPORT_PRIVATE size_t GetPacketHeaderSize( 284868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) QuicGuidLength guid_length, 285868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) bool include_version, 286868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) QuicSequenceNumberLength sequence_number_length, 287868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) InFecGroup is_in_fec_group); 288868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 289868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)// Size in bytes of the public reset packet. 290868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)NET_EXPORT_PRIVATE size_t GetPublicResetPacketSize(); 291868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 292868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)// Index of the first byte in a QUIC packet of FEC protected data. 293868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)NET_EXPORT_PRIVATE size_t GetStartOfFecProtectedData( 294868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) QuicGuidLength guid_length, 295868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) bool include_version, 296868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) QuicSequenceNumberLength sequence_number_length); 297868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)// Index of the first byte in a QUIC packet of encrypted data. 298868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)NET_EXPORT_PRIVATE size_t GetStartOfEncryptedData( 299868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) QuicGuidLength guid_length, 300868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) bool include_version, 301868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) QuicSequenceNumberLength sequence_number_length); 302868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 303c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)enum QuicRstStreamErrorCode { 304c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QUIC_STREAM_NO_ERROR = 0, 3052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 306d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) // There was some error which halted stream processing. 307d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) QUIC_ERROR_PROCESSING_STREAM, 3085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We got two fin or reset offsets which did not match. 3095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_MULTIPLE_TERMINATION_OFFSETS, 3105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We got bad payload and can not respond to it at the protocol level. 3115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_BAD_APPLICATION_PAYLOAD, 312c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Stream closed due to connection error. No reset frame is sent when this 313c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // happens. 314c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QUIC_STREAM_CONNECTION_ERROR, 315c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // GoAway frame sent. No more stream can be created. 316c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QUIC_STREAM_PEER_GOING_AWAY, 317424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) // The stream has been cancelled. 318424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) QUIC_STREAM_CANCELLED, 319c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 320c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // No error. Used as bound while iterating. 321c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QUIC_STREAM_LAST_ERROR, 322c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)}; 3235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3243551c9c881056c480085172ff9840cab31610854Torne (Richard Coles)// These values must remain stable as they are uploaded to UMA histograms. 3253551c9c881056c480085172ff9840cab31610854Torne (Richard Coles)// To add a new error code, use the current value of QUIC_LAST_ERROR and 3263551c9c881056c480085172ff9840cab31610854Torne (Richard Coles)// increment QUIC_LAST_ERROR. 327c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)enum QuicErrorCode { 328c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QUIC_NO_ERROR = 0, 3295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 330c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Connection has reached an invalid state. 3313551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_INTERNAL_ERROR = 1, 332c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // There were data frames after the a fin or reset. 3333551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_STREAM_DATA_AFTER_TERMINATION = 2, 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Control frame is malformed. 3353551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_INVALID_PACKET_HEADER = 3, 3365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Frame data is malformed. 3373551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_INVALID_FRAME_DATA = 4, 3383551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) // The packet contained no payload. 3393551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_MISSING_PAYLOAD = 48, 3405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // FEC data is malformed. 3413551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_INVALID_FEC_DATA = 5, 3423551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) // STREAM frame data is malformed. 3433551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_INVALID_STREAM_DATA = 46, 3443551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) // RST_STREAM frame data is malformed. 3453551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_INVALID_RST_STREAM_DATA = 6, 3463551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) // CONNECTION_CLOSE frame data is malformed. 3473551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_INVALID_CONNECTION_CLOSE_DATA = 7, 3483551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) // GOAWAY frame data is malformed. 3493551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_INVALID_GOAWAY_DATA = 8, 3503551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) // ACK frame data is malformed. 3513551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_INVALID_ACK_DATA = 9, 3523551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) // CONGESTION_FEEDBACK frame data is malformed. 3533551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_INVALID_CONGESTION_FEEDBACK_DATA = 47, 3542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Version negotiation packet is malformed. 3553551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_INVALID_VERSION_NEGOTIATION_PACKET = 10, 35690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Public RST packet is malformed. 3573551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_INVALID_PUBLIC_RST_PACKET = 11, 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // There was an error decrypting. 3593551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_DECRYPTION_FAILURE = 12, 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // There was an error encrypting. 3613551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_ENCRYPTION_FAILURE = 13, 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The packet exceeded kMaxPacketSize. 3633551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_PACKET_TOO_LARGE = 14, 3645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Data was sent for a stream which did not exist. 3653551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_PACKET_FOR_NONEXISTENT_STREAM = 15, 3662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // The peer is going away. May be a client or server. 3673551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_PEER_GOING_AWAY = 16, 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // A stream ID was invalid. 3693551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_INVALID_STREAM_ID = 17, 370d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) // A priority was invalid. 371d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) QUIC_INVALID_PRIORITY = 49, 3725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Too many streams already open. 3733551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_TOO_MANY_OPEN_STREAMS = 18, 3742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Received public reset for this connection. 3753551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_PUBLIC_RESET = 19, 376b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) // Invalid protocol version. 3773551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_INVALID_VERSION = 20, 378b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) // Stream reset before headers decompressed. 3793551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_STREAM_RST_BEFORE_HEADERS_DECOMPRESSED = 21, 380b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) // The Header ID for a stream was too far from the previous. 3813551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_INVALID_HEADER_ID = 22, 38290dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Negotiable parameter received during handshake had invalid value. 3833551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_INVALID_NEGOTIATED_VALUE = 23, 38490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // There was an error decompressing data. 3853551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_DECOMPRESSION_FAILURE = 24, 3865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We hit our prenegotiated (or default) timeout 3873551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_CONNECTION_TIMED_OUT = 25, 38890dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // There was an error encountered migrating addresses 3893551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_ERROR_MIGRATING_ADDRESS = 26, 39058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // There was an error while writing to the socket. 3913551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_PACKET_WRITE_ERROR = 27, 39258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // There was an error while reading from the socket. 39358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) QUIC_PACKET_READ_ERROR = 51, 394d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) // We received a STREAM_FRAME with no data and no fin flag set. 395d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) QUIC_INVALID_STREAM_FRAME = 50, 39690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Crypto errors. 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 40090dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) // Hanshake failed. 4013551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_HANDSHAKE_FAILED = 28, 4025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Handshake message contained out of order tags. 4033551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_CRYPTO_TAGS_OUT_OF_ORDER = 29, 4042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Handshake message contained too many entries. 4053551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_CRYPTO_TOO_MANY_ENTRIES = 30, 4065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Handshake message contained an invalid value length. 4073551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_CRYPTO_INVALID_VALUE_LENGTH = 31, 4085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // A crypto message was received after the handshake was complete. 4093551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_CRYPTO_MESSAGE_AFTER_HANDSHAKE_COMPLETE = 32, 4102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // A crypto message was received with an illegal message tag. 4113551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_INVALID_CRYPTO_MESSAGE_TYPE = 33, 4122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // A crypto message was received with an illegal parameter. 4133551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_INVALID_CRYPTO_MESSAGE_PARAMETER = 34, 4144e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) // An invalid channel id signature was supplied. 4154e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) QUIC_INVALID_CHANNEL_ID_SIGNATURE = 52, 4162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // A crypto message was received with a mandatory parameter missing. 4173551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_CRYPTO_MESSAGE_PARAMETER_NOT_FOUND = 35, 4182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // A crypto message was received with a parameter that has no overlap 4192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // with the local parameter. 4203551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_CRYPTO_MESSAGE_PARAMETER_NO_OVERLAP = 36, 4212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // A crypto message was received that contained a parameter with too few 4222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // values. 4233551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_CRYPTO_MESSAGE_INDEX_NOT_FOUND = 37, 424c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // An internal error occured in crypto processing. 4253551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_CRYPTO_INTERNAL_ERROR = 38, 426c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // A crypto handshake message specified an unsupported version. 4273551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_CRYPTO_VERSION_NOT_SUPPORTED = 39, 428c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // There was no intersection between the crypto primitives supported by the 429c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // peer and ourselves. 4303551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_CRYPTO_NO_SUPPORT = 40, 431c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // The server rejected our client hello messages too many times. 4323551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_CRYPTO_TOO_MANY_REJECTS = 41, 433c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // The client rejected the server's certificate chain or signature. 4343551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_PROOF_INVALID = 42, 435c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // A crypto message was received with a duplicate tag. 4363551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_CRYPTO_DUPLICATE_TAG = 43, 437b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) // A crypto message was received with the wrong encryption level (i.e. it 438b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) // should have been encrypted but was not.) 4393551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_CRYPTO_ENCRYPTION_LEVEL_INCORRECT = 44, 440b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) // The server config for a server has expired. 4413551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QUIC_CRYPTO_SERVER_CONFIG_EXPIRED = 45, 4424e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) // We failed to setup the symmetric keys for a connection. 4434e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) QUIC_CRYPTO_SYMMETRIC_KEY_SETUP_FAILED = 53, 444f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // A handshake message arrived, but we are still validating the 445f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // previous handshake message. 446f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) QUIC_CRYPTO_MESSAGE_WHILE_VALIDATING_CLIENT_HELLO = 54, 447f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // This connection involved a version negotiation which appears to have been 448f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // tampered with. 449f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) QUIC_VERSION_NEGOTIATION_MISMATCH = 55, 450c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 451c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // No error. Used as bound while iterating. 452f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) QUIC_LAST_ERROR = 56, 4535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 4545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)struct NET_EXPORT_PRIVATE QuicPacketPublicHeader { 4562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketPublicHeader(); 4572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) explicit QuicPacketPublicHeader(const QuicPacketPublicHeader& other); 4582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ~QuicPacketPublicHeader(); 4592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Universal header. All QuicPacket headers will have a guid and public flags. 4615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicGuid guid; 462868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) QuicGuidLength guid_length; 4632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool reset_flag; 4642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool version_flag; 465868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) QuicSequenceNumberLength sequence_number_length; 466558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch QuicVersionVector versions; 4672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 4682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Header for Data or FEC packets. 470c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)struct NET_EXPORT_PRIVATE QuicPacketHeader { 471c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QuicPacketHeader(); 472c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) explicit QuicPacketHeader(const QuicPacketPublicHeader& header); 4732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) NET_EXPORT_PRIVATE friend std::ostream& operator<<( 4752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::ostream& os, const QuicPacketHeader& s); 4762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketPublicHeader public_header; 4782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool fec_flag; 4792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool entropy_flag; 4802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketEntropyHash entropy_hash; 4815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicPacketSequenceNumber packet_sequence_number; 482868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) InFecGroup is_in_fec_group; 4835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicFecGroupNumber fec_group; 4845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 4855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 486c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)struct NET_EXPORT_PRIVATE QuicPublicResetPacket { 4872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPublicResetPacket() {} 4882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) explicit QuicPublicResetPacket(const QuicPacketPublicHeader& header) 4892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : public_header(header) {} 4902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketPublicHeader public_header; 4912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketSequenceNumber rejected_sequence_number; 4922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPublicResetNonceProof nonce_proof; 4932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 4942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)enum QuicVersionNegotiationState { 4962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) START_NEGOTIATION = 0, 497ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // Server-side this implies we've sent a version negotiation packet and are 498ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // waiting on the client to select a compatible version. Client-side this 499ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // implies we've gotten a version negotiation packet, are retransmitting the 500ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // initial packets with a supported version and are waiting for our first 501ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // packet from the server. 502ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch NEGOTIATION_IN_PROGRESS, 503ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // This indicates this endpoint has received a packet from the peer with a 504ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // version this endpoint supports. Version negotiation is complete, and the 505ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // version number will no longer be sent with future packets. 5062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) NEGOTIATED_VERSION 5072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 5082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)typedef QuicPacketPublicHeader QuicVersionNegotiationPacket; 5102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// A padding frame contains no payload. 5122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)struct NET_EXPORT_PRIVATE QuicPaddingFrame { 5132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 5142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE QuicStreamFrame { 5165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicStreamFrame(); 517f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) QuicStreamFrame(const QuicStreamFrame& frame); 5185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicStreamFrame(QuicStreamId stream_id, 5195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool fin, 5202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicStreamOffset offset, 521f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) IOVector data); 522f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 523f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // Returns a copy of the IOVector |data| as a heap-allocated string. 524f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // Caller must take ownership of the returned string. 525f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) std::string* GetDataAsString() const; 5265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicStreamId stream_id; 5285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool fin; 5292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicStreamOffset offset; // Location of this data in the stream. 530f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) IOVector data; 53158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 53258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // If this is set, then when this packet is ACKed the AckNotifier will be 53358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // informed. 53458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) QuicAckNotifier* notifier; 5355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 5365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// TODO(ianswett): Re-evaluate the trade-offs of hash_set vs set when framing 5382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// is finalized. 5392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)typedef std::set<QuicPacketSequenceNumber> SequenceNumberSet; 5402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// TODO(pwestin): Add a way to enforce the max size of this map. 5412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)typedef std::map<QuicPacketSequenceNumber, QuicTime> TimeMap; 5422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE ReceivedPacketInfo { 5445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReceivedPacketInfo(); 5455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ~ReceivedPacketInfo(); 5462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) NET_EXPORT_PRIVATE friend std::ostream& operator<<( 5472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::ostream& os, const ReceivedPacketInfo& s); 5482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Entropy hash of all packets up to largest observed not including missing 5502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // packets. 5512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketEntropyHash entropy_hash; 5522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // The highest packet sequence number we've observed from the peer. 5542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // 5552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // In general, this should be the largest packet number we've received. In 5562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // the case of truncated acks, we may have to advertise a lower "upper bound" 5572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // than largest received, to avoid implicitly acking missing packets that 5582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // don't fit in the missing packet list due to size limitations. In this 5592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // case, largest_observed may be a packet which is also in the missing packets 5602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // list. 5612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketSequenceNumber largest_observed; 5622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Time elapsed since largest_observed was received until this Ack frame was 5642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // sent. 5652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicTime::Delta delta_time_largest_observed; 5662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // TODO(satyamshekhar): Can be optimized using an interval set like data 5682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // structure. 5695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The set of packets which we're expecting and have not received. 5702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SequenceNumberSet missing_packets; 5710f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) 5720f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) // Whether the ack had to be truncated when sent. 5730f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) bool is_truncated; 5745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 5755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// True if the sequence number is greater than largest_observed or is listed 5772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// as missing. 5782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Always returns false for sequence numbers less than least_unacked. 5792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)bool NET_EXPORT_PRIVATE IsAwaitingPacket( 5802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const ReceivedPacketInfo& received_info, 5812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketSequenceNumber sequence_number); 5822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Inserts missing packets between [lower, higher). 5842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void NET_EXPORT_PRIVATE InsertMissingPacketsBetween( 5852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ReceivedPacketInfo* received_info, 5862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketSequenceNumber lower, 5872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketSequenceNumber higher); 5882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE SentPacketInfo { 5905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SentPacketInfo(); 5915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ~SentPacketInfo(); 5922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) NET_EXPORT_PRIVATE friend std::ostream& operator<<( 5932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::ostream& os, const SentPacketInfo& s); 5942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Entropy hash of all packets up to, but not including, the least unacked 5962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // packet. 5972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketEntropyHash entropy_hash; 5985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The lowest packet we've sent which is unacked, and we expect an ack for. 5995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicPacketSequenceNumber least_unacked; 6002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 6012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 6022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)struct NET_EXPORT_PRIVATE QuicAckFrame { 6032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicAckFrame() {} 6042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Testing convenience method to construct a QuicAckFrame with all packets 6052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // from least_unacked to largest_observed acked. 6062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicAckFrame(QuicPacketSequenceNumber largest_observed, 6072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicTime largest_observed_receive_time, 6082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketSequenceNumber least_unacked); 6092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 6102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) NET_EXPORT_PRIVATE friend std::ostream& operator<<( 6112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::ostream& os, const QuicAckFrame& s); 6122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 6132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SentPacketInfo sent_info; 6142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ReceivedPacketInfo received_info; 6155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 6165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Defines for all types of congestion feedback that will be negotiated in QUIC, 6187dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch// kTCP MUST be supported by all QUIC implementations to guarantee 100% 6195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// compatibility. 6205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)enum CongestionFeedbackType { 6215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) kTCP, // Used to mimic TCP. 6225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) kInterArrival, // Use additional inter arrival information. 6235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) kFixRate, // Provided for testing. 6245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 6255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE CongestionFeedbackMessageTCP { 6275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint16 accumulated_number_of_lost_packets; 6282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicByteCount receive_window; 6295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 6305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE CongestionFeedbackMessageInterArrival { 6322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CongestionFeedbackMessageInterArrival(); 6332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ~CongestionFeedbackMessageInterArrival(); 6345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint16 accumulated_number_of_lost_packets; 6352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // The set of received packets since the last feedback was sent, along with 6362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // their arrival times. 6372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) TimeMap received_packet_times; 6385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 6395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE CongestionFeedbackMessageFixRate { 6412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CongestionFeedbackMessageFixRate(); 6422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicBandwidth bitrate; 6435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 6445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)struct NET_EXPORT_PRIVATE QuicCongestionFeedbackFrame { 6462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicCongestionFeedbackFrame(); 6472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ~QuicCongestionFeedbackFrame(); 6485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) NET_EXPORT_PRIVATE friend std::ostream& operator<<( 6502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::ostream& os, const QuicCongestionFeedbackFrame& c); 6515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CongestionFeedbackType type; 6532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // This should really be a union, but since the inter arrival struct 6542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // is non-trivial, C++ prohibits it. 6552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CongestionFeedbackMessageTCP tcp; 6562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CongestionFeedbackMessageInterArrival inter_arrival; 6572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CongestionFeedbackMessageFixRate fix_rate; 6585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 6595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE QuicRstStreamFrame { 6615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicRstStreamFrame() {} 662c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QuicRstStreamFrame(QuicStreamId stream_id, QuicRstStreamErrorCode error_code) 6632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : stream_id(stream_id), error_code(error_code) { 6645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK_LE(error_code, std::numeric_limits<uint8>::max()); 6655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicStreamId stream_id; 668c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QuicRstStreamErrorCode error_code; 6695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string error_details; 6705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 6715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE QuicConnectionCloseFrame { 6735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicErrorCode error_code; 6745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string error_details; 6752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 6762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 6772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)struct NET_EXPORT_PRIVATE QuicGoAwayFrame { 6782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicGoAwayFrame() {} 6792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicGoAwayFrame(QuicErrorCode error_code, 6802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicStreamId last_good_stream_id, 6812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const std::string& reason); 6822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 6832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicErrorCode error_code; 6842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicStreamId last_good_stream_id; 6852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::string reason_phrase; 6865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 6875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 688c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// EncryptionLevel enumerates the stages of encryption that a QUIC connection 689c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// progresses through. When retransmitting a packet, the encryption level needs 690c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// to be specified so that it is retransmitted at a level which the peer can 691c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// understand. 692c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)enum EncryptionLevel { 693c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ENCRYPTION_NONE = 0, 694c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ENCRYPTION_INITIAL = 1, 695c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ENCRYPTION_FORWARD_SECURE = 2, 696c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 697c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) NUM_ENCRYPTION_LEVELS, 698c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)}; 699c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 7005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE QuicFrame { 7015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicFrame() {} 7022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) explicit QuicFrame(QuicPaddingFrame* padding_frame) 7032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : type(PADDING_FRAME), 7042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) padding_frame(padding_frame) { 7052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 7065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit QuicFrame(QuicStreamFrame* stream_frame) 7072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : type(STREAM_FRAME), 7082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) stream_frame(stream_frame) { 7095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 7105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit QuicFrame(QuicAckFrame* frame) 7112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : type(ACK_FRAME), 7122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ack_frame(frame) { 7132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 7142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) explicit QuicFrame(QuicCongestionFeedbackFrame* frame) 7152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : type(CONGESTION_FEEDBACK_FRAME), 7162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) congestion_feedback_frame(frame) { 7175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 7185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit QuicFrame(QuicRstStreamFrame* frame) 7195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : type(RST_STREAM_FRAME), 7205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) rst_stream_frame(frame) { 7215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 7225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit QuicFrame(QuicConnectionCloseFrame* frame) 7235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : type(CONNECTION_CLOSE_FRAME), 7245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) connection_close_frame(frame) { 7255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 7262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) explicit QuicFrame(QuicGoAwayFrame* frame) 7272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : type(GOAWAY_FRAME), 7282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) goaway_frame(frame) { 7292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 7305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicFrameType type; 7325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) union { 7332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPaddingFrame* padding_frame; 7345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicStreamFrame* stream_frame; 7355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicAckFrame* ack_frame; 7362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicCongestionFeedbackFrame* congestion_feedback_frame; 7375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicRstStreamFrame* rst_stream_frame; 7385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicConnectionCloseFrame* connection_close_frame; 7392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicGoAwayFrame* goaway_frame; 7405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 7415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 7425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef std::vector<QuicFrame> QuicFrames; 7445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE QuicFecData { 7465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicFecData(); 7475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // The FEC group number is also the sequence number of the first 7492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // FEC protected packet. The last protected packet's sequence number will 7502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // be one less than the sequence number of the FEC packet. 7515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicFecGroupNumber fec_group; 7525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::StringPiece redundancy; 7535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 7545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class NET_EXPORT_PRIVATE QuicData { 7565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 7575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicData(const char* buffer, size_t length) 7585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : buffer_(buffer), 7595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) length_(length), 7602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) owns_buffer_(false) {} 7615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicData(char* buffer, size_t length, bool owns_buffer) 7635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : buffer_(buffer), 7645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) length_(length), 7652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) owns_buffer_(owns_buffer) {} 7665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~QuicData(); 7685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::StringPiece AsStringPiece() const { 7705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return base::StringPiece(data(), length()); 7715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 7725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char* data() const { return buffer_; } 7745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t length() const { return length_; } 7755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 7775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char* buffer_; 7785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t length_; 7795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool owns_buffer_; 7805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(QuicData); 7825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 7835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class NET_EXPORT_PRIVATE QuicPacket : public QuicData { 7855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 786868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) static QuicPacket* NewDataPacket( 787868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) char* buffer, 788868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) size_t length, 789868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) bool owns_buffer, 790868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) QuicGuidLength guid_length, 791868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) bool includes_version, 792868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) QuicSequenceNumberLength sequence_number_length) { 793868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) return new QuicPacket(buffer, length, owns_buffer, guid_length, 794868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) includes_version, sequence_number_length, false); 7955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 7965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 797868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) static QuicPacket* NewFecPacket( 798868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) char* buffer, 799868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) size_t length, 800868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) bool owns_buffer, 801868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) QuicGuidLength guid_length, 802868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) bool includes_version, 803868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) QuicSequenceNumberLength sequence_number_length) { 804868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) return new QuicPacket(buffer, length, owns_buffer, guid_length, 805868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) includes_version, sequence_number_length, true); 8065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 8075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::StringPiece FecProtectedData() const; 8092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::StringPiece AssociatedData() const; 8102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::StringPiece BeforePlaintext() const; 8112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::StringPiece Plaintext() const; 8125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool is_fec_packet() const { return is_fec_packet_; } 8142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 8155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char* mutable_data() { return buffer_; } 8165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 8182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacket(char* buffer, 8192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) size_t length, 8202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool owns_buffer, 821868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) QuicGuidLength guid_length, 8222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool includes_version, 823868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) QuicSequenceNumberLength sequence_number_length, 8242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool is_fec_packet) 8252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : QuicData(buffer, length, owns_buffer), 8262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) buffer_(buffer), 8272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) is_fec_packet_(is_fec_packet), 828868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) guid_length_(guid_length), 829868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) includes_version_(includes_version), 830868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) sequence_number_length_(sequence_number_length) {} 8312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 8325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char* buffer_; 8332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const bool is_fec_packet_; 834868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) const QuicGuidLength guid_length_; 8352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const bool includes_version_; 836868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) const QuicSequenceNumberLength sequence_number_length_; 8375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(QuicPacket); 8395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 8405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class NET_EXPORT_PRIVATE QuicEncryptedPacket : public QuicData { 8425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 8435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicEncryptedPacket(const char* buffer, size_t length) 8442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : QuicData(buffer, length) {} 8455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicEncryptedPacket(char* buffer, size_t length, bool owns_buffer) 8472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : QuicData(buffer, length, owns_buffer) {} 8485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 849f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // Clones the packet into a new packet which owns the buffer. 850f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) QuicEncryptedPacket* Clone() const; 851f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 8522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // By default, gtest prints the raw bytes of an object. The bool data 8532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // member (in the base class QuicData) causes this object to have padding 8542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // bytes, which causes the default gtest object printer to read 8552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // uninitialize memory. So we need to teach gtest how to print this object. 8562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) NET_EXPORT_PRIVATE friend std::ostream& operator<<( 8572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::ostream& os, const QuicEncryptedPacket& s); 8585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 8605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(QuicEncryptedPacket); 8615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 8625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)class NET_EXPORT_PRIVATE RetransmittableFrames { 8642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) public: 8652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) RetransmittableFrames(); 8662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ~RetransmittableFrames(); 8672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 8682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Allocates a local copy of the referenced StringPiece has QuicStreamFrame 8692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // use it. 8702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Takes ownership of |stream_frame|. 8712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const QuicFrame& AddStreamFrame(QuicStreamFrame* stream_frame); 8722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Takes ownership of the frame inside |frame|. 8732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const QuicFrame& AddNonStreamFrame(const QuicFrame& frame); 8742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const QuicFrames& frames() const { return frames_; } 8752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 876c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) void set_encryption_level(EncryptionLevel level); 877c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) EncryptionLevel encryption_level() const { 878c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return encryption_level_; 879c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } 880c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 8812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) private: 8822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicFrames frames_; 883c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) EncryptionLevel encryption_level_; 8842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Data referenced by the StringPiece of a QuicStreamFrame. 8852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::vector<std::string*> stream_data_; 8862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 8872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(RetransmittableFrames); 8882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 8892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 8902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)struct NET_EXPORT_PRIVATE SerializedPacket { 8912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SerializedPacket(QuicPacketSequenceNumber sequence_number, 8923551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QuicSequenceNumberLength sequence_number_length, 8932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacket* packet, 8942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketEntropyHash entropy_hash, 89558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) RetransmittableFrames* retransmittable_frames); 89658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) ~SerializedPacket(); 8972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 8982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketSequenceNumber sequence_number; 8993551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) QuicSequenceNumberLength sequence_number_length; 9002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacket* packet; 9012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketEntropyHash entropy_hash; 9022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) RetransmittableFrames* retransmittable_frames; 90358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 90458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // If set, these will be called when this packet is ACKed by the peer. 90558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) std::set<QuicAckNotifier*> notifiers; 9062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 9072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 9082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// A struct for functions which consume data payloads and fins. 9092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)struct QuicConsumedData { 9102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicConsumedData(size_t bytes_consumed, bool fin_consumed) 9112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : bytes_consumed(bytes_consumed), 9122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) fin_consumed(fin_consumed) {} 9132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // By default, gtest prints the raw bytes of an object. The bool data 9142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // member causes this object to have padding bytes, which causes the 9152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // default gtest object printer to read uninitialize memory. So we need 9162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // to teach gtest how to print this object. 9172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) NET_EXPORT_PRIVATE friend std::ostream& operator<<( 9182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::ostream& os, const QuicConsumedData& s); 9192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 92058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // How many bytes were consumed. 9212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) size_t bytes_consumed; 92258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 92358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // True if an incoming fin was consumed. 9242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool fin_consumed; 9252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 9262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 9274e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)enum WriteStatus { 9284e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) WRITE_STATUS_OK, 9294e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) WRITE_STATUS_BLOCKED, 9304e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) WRITE_STATUS_ERROR, 9314e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)}; 9324e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) 9334e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)// A struct used to return the result of write calls including either the number 9344e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)// of bytes written or the error code, depending upon the status. 9354e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)struct NET_EXPORT_PRIVATE WriteResult { 9364e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) WriteResult(WriteStatus status, int bytes_written_or_error_code) : 9374e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) status(status), bytes_written(bytes_written_or_error_code) { 9384e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) } 9394e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) 9404e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) WriteStatus status; 9414e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) union { 9424e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) int bytes_written; // only valid when status is OK 9434e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) int error_code; // only valid when status is ERROR 9444e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) }; 9454e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)}; 9464e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) 9475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace net 9485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // NET_QUIC_QUIC_PROTOCOL_H_ 950