quic_protocol.h revision c2e0dbddbe15c98d52c4786dac06cb8952a8ae6d
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" 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/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" 232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "net/quic/quic_bandwidth.h" 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/quic/quic_time.h" 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace net { 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)using ::operator<<; 292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class QuicPacket; 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef uint64 QuicGuid; 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef uint32 QuicStreamId; 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef uint64 QuicStreamOffset; 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef uint64 QuicPacketSequenceNumber; 362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)typedef QuicPacketSequenceNumber QuicFecGroupNumber; 372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)typedef uint64 QuicPublicResetNonceProof; 382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)typedef uint8 QuicPacketEntropyHash; 392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)typedef uint32 QuicVersionTag; 402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)typedef std::vector<QuicVersionTag> QuicVersionTagList; 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// TODO(rch): Consider Quic specific names for these constants. 432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Maximum size in bytes of a QUIC packet. 442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const QuicByteCount kMaxPacketSize = 1200; 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Maximum number of open streams per connection. 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const size_t kDefaultMaxStreamsPerConnection = 100; 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Number of bytes reserved for guid in the packet header. 502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const size_t kQuicGuidSize = 8; 512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Number of bytes reserved for public flags in the packet header. 522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const size_t kPublicFlagsSize = 1; 532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Number of bytes reserved for version number in the packet header. 542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const size_t kQuicVersionSize = 4; 552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Number of bytes reserved for sequence number in the packet header. 562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const size_t kSequenceNumberSize = 6; 572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Number of bytes reserved for private flags in the packet header. 582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const size_t kPrivateFlagsSize = 1; 592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Number of bytes reserved for FEC group in the packet header. 602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const size_t kFecGroupSize = 1; 612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Number of bytes reserved for the nonce proof in public reset packet. 622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const size_t kPublicResetNonceSize = 8; 632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Signifies that the QuicPacket will contain version of the protocol. 652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const bool kIncludeVersion = true; 662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Size in bytes of the data or fec packet header. 682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)NET_EXPORT_PRIVATE size_t GetPacketHeaderSize(bool include_version); 692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Size in bytes of the public reset packet. 702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)NET_EXPORT_PRIVATE size_t GetPublicResetPacketSize(); 712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Index of the first byte in a QUIC packet of FEC protected data. 732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)NET_EXPORT_PRIVATE size_t GetStartOfFecProtectedData(bool include_version); 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Index of the first byte in a QUIC packet of encrypted data. 752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)NET_EXPORT_PRIVATE size_t GetStartOfEncryptedData(bool include_version); 762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Returns true if |version| is a supported protocol version. 772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)NET_EXPORT_PRIVATE bool IsSupportedVersion(QuicVersionTag version); 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Index of the first byte in a QUIC packet which is used in hash calculation. 802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const size_t kStartOfHashData = 0; 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Limit on the delta between stream IDs. 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const QuicStreamId kMaxStreamIdDelta = 100; 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Reserved ID for the crypto stream. 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// TODO(rch): ensure that this is not usable by any other streams. 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const QuicStreamId kCryptoStreamId = 1; 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Value which indicates this packet is not FEC protected. 902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const uint8 kNoFecOffset = 0xFF; 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const int64 kDefaultTimeoutUs = 600000000; // 10 minutes. 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 94c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)enum Retransmission { 95c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) NOT_RETRANSMISSION = 0, 96c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) IS_RETRANSMISSION = 1, 97c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)}; 98c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 99c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)enum HasRetransmittableData { 100c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) HAS_RETRANSMITTABLE_DATA = 0, 101c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) NO_RETRANSMITTABLE_DATA = 1, 102c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)}; 103c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)enum QuicFrameType { 1052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PADDING_FRAME = 0, 1062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) STREAM_FRAME, 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ACK_FRAME, 1082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CONGESTION_FEEDBACK_FRAME, 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) RST_STREAM_FRAME, 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CONNECTION_CLOSE_FRAME, 1112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) GOAWAY_FRAME, 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NUM_FRAME_TYPES 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)enum QuicPacketPublicFlags { 1162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PACKET_PUBLIC_FLAGS_NONE = 0, 1172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PACKET_PUBLIC_FLAGS_VERSION = 1 << 0, // Packet header contains version info. 1182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PACKET_PUBLIC_FLAGS_RST = 1 << 1, // Packet is a public reset packet. 1192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PACKET_PUBLIC_FLAGS_MAX = (1 << 2) - 1 // All bits set. 1202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)enum QuicPacketPrivateFlags { 1232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PACKET_PRIVATE_FLAGS_NONE = 0, 1242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PACKET_PRIVATE_FLAGS_FEC = 1 << 0, // Payload is FEC as opposed to frames. 1252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PACKET_PRIVATE_FLAGS_ENTROPY = 1 << 1, 1262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PACKET_PRIVATE_FLAGS_FEC_ENTROPY = 1 << 2, 1272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PACKET_PRIVATE_FLAGS_MAX = (1 << 3) - 1 // All bits set. 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 130c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)enum QuicRstStreamErrorCode { 131c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QUIC_STREAM_NO_ERROR = 0, 1322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // There was some server error which halted stream processing. 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_SERVER_ERROR_PROCESSING_STREAM, 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We got two fin or reset offsets which did not match. 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_MULTIPLE_TERMINATION_OFFSETS, 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We got bad payload and can not respond to it at the protocol level. 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_BAD_APPLICATION_PAYLOAD, 139c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Stream closed due to connection error. No reset frame is sent when this 140c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // happens. 141c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QUIC_STREAM_CONNECTION_ERROR, 142c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // GoAway frame sent. No more stream can be created. 143c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QUIC_STREAM_PEER_GOING_AWAY, 144c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 145c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // No error. Used as bound while iterating. 146c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QUIC_STREAM_LAST_ERROR, 147c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)}; 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 149c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)enum QuicErrorCode { 150c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QUIC_NO_ERROR = 0, 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 152c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Connection has reached an invalid state. 153c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QUIC_INTERNAL_ERROR, 154c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // There were data frames after the a fin or reset. 155c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QUIC_STREAM_DATA_AFTER_TERMINATION, 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Control frame is malformed. 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_INVALID_PACKET_HEADER, 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Frame data is malformed. 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_INVALID_FRAME_DATA, 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // FEC data is malformed. 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_INVALID_FEC_DATA, 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Stream rst data is malformed 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_INVALID_RST_STREAM_DATA, 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Connection close data is malformed. 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_INVALID_CONNECTION_CLOSE_DATA, 1662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // GoAway data is malformed. 1672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QUIC_INVALID_GOAWAY_DATA, 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Ack data is malformed. 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_INVALID_ACK_DATA, 1702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Version negotiation packet is malformed. 1712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QUIC_INVALID_VERSION_NEGOTIATION_PACKET, 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // There was an error decrypting. 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_DECRYPTION_FAILURE, 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // There was an error encrypting. 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_ENCRYPTION_FAILURE, 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The packet exceeded kMaxPacketSize. 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_PACKET_TOO_LARGE, 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Data was sent for a stream which did not exist. 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_PACKET_FOR_NONEXISTENT_STREAM, 1802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // The peer is going away. May be a client or server. 1812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QUIC_PEER_GOING_AWAY, 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // A stream ID was invalid. 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_INVALID_STREAM_ID, 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Too many streams already open. 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_TOO_MANY_OPEN_STREAMS, 1862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Received public reset for this connection. 1872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QUIC_PUBLIC_RESET, 1882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Invalid protocol version 1892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QUIC_INVALID_VERSION, 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We hit our prenegotiated (or default) timeout 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_CONNECTION_TIMED_OUT, 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Crypto errors. 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Handshake message contained out of order tags. 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_CRYPTO_TAGS_OUT_OF_ORDER, 1982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Handshake message contained too many entries. 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_CRYPTO_TOO_MANY_ENTRIES, 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Handshake message contained an invalid value length. 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_CRYPTO_INVALID_VALUE_LENGTH, 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // A crypto message was received after the handshake was complete. 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_CRYPTO_MESSAGE_AFTER_HANDSHAKE_COMPLETE, 2042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // A crypto message was received with an illegal message tag. 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QUIC_INVALID_CRYPTO_MESSAGE_TYPE, 2062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // A crypto message was received with an illegal parameter. 2072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QUIC_INVALID_CRYPTO_MESSAGE_PARAMETER, 2082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // A crypto message was received with a mandatory parameter missing. 2092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QUIC_CRYPTO_MESSAGE_PARAMETER_NOT_FOUND, 2102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // A crypto message was received with a parameter that has no overlap 2112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // with the local parameter. 2122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QUIC_CRYPTO_MESSAGE_PARAMETER_NO_OVERLAP, 2132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // A crypto message was received that contained a parameter with too few 2142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // values. 2152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QUIC_CRYPTO_MESSAGE_INDEX_NOT_FOUND, 216c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // An internal error occured in crypto processing. 217c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QUIC_CRYPTO_INTERNAL_ERROR, 218c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // A crypto handshake message specified an unsupported version. 219c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QUIC_CRYPTO_VERSION_NOT_SUPPORTED, 220c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // There was no intersection between the crypto primitives supported by the 221c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // peer and ourselves. 222c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QUIC_CRYPTO_NO_SUPPORT, 223c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // The server rejected our client hello messages too many times. 224c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QUIC_CRYPTO_TOO_MANY_REJECTS, 225c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // The client rejected the server's certificate chain or signature. 226c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QUIC_PROOF_INVALID, 227c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // A crypto message was received with a duplicate tag. 228c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QUIC_CRYPTO_DUPLICATE_TAG, 229c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 230c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // No error. Used as bound while iterating. 231c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QUIC_LAST_ERROR, 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Version and Crypto tags are written to the wire with a big-endian 2352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// representation of the name of the tag. For example 2362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// the client hello tag (CHLO) will be written as the 2372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// following 4 bytes: 'C' 'H' 'L' 'O'. Since it is 2382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// stored in memory as a little endian uint32, we need 2392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// to reverse the order of the bytes. 240c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// 241c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// The TAG macro is used in header files to ensure that we don't create static 242c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// initialisers. In normal code, the MakeQuicTag function should be used. 243c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#define TAG(a, b, c, d) ((d << 24) + (c << 16) + (b << 8) + a) 2442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)const QuicVersionTag kUnsupportedVersion = -1; 245c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)const QuicVersionTag kQuicVersion1 = TAG('Q', '1', '.', '0'); 246c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#undef TAG 247c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 248c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// MakeQuicTag returns a value given the four bytes. For example: 249c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// MakeQuicTag('C', 'H', 'L', 'O'); 250c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)uint32 NET_EXPORT_PRIVATE MakeQuicTag(char a, char b, char c, char d); 2512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)struct NET_EXPORT_PRIVATE QuicPacketPublicHeader { 2532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketPublicHeader(); 2542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) explicit QuicPacketPublicHeader(const QuicPacketPublicHeader& other); 2552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ~QuicPacketPublicHeader(); 2562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketPublicHeader& operator=(const QuicPacketPublicHeader& other); 2582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Universal header. All QuicPacket headers will have a guid and public flags. 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicGuid guid; 2612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool reset_flag; 2622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool version_flag; 2632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicVersionTagList versions; 2642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 2652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Header for Data or FEC packets. 267c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)struct NET_EXPORT_PRIVATE QuicPacketHeader { 268c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QuicPacketHeader(); 269c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) explicit QuicPacketHeader(const QuicPacketPublicHeader& header); 2702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) NET_EXPORT_PRIVATE friend std::ostream& operator<<( 2722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::ostream& os, const QuicPacketHeader& s); 2732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketPublicHeader public_header; 2752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool fec_flag; 2762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool fec_entropy_flag; 2772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool entropy_flag; 2782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketEntropyHash entropy_hash; 2795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicPacketSequenceNumber packet_sequence_number; 2805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicFecGroupNumber fec_group; 2815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 2825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 283c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)struct NET_EXPORT_PRIVATE QuicPublicResetPacket { 2842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPublicResetPacket() {} 2852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) explicit QuicPublicResetPacket(const QuicPacketPublicHeader& header) 2862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : public_header(header) {} 2872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketPublicHeader public_header; 2882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketSequenceNumber rejected_sequence_number; 2892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPublicResetNonceProof nonce_proof; 2902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 2912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)enum QuicVersionNegotiationState { 2932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) START_NEGOTIATION = 0, 2942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SENT_NEGOTIATION_PACKET, 2952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) NEGOTIATED_VERSION 2962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 2972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)typedef QuicPacketPublicHeader QuicVersionNegotiationPacket; 2992a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// A padding frame contains no payload. 3012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)struct NET_EXPORT_PRIVATE QuicPaddingFrame { 3022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 3032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE QuicStreamFrame { 3055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicStreamFrame(); 3065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicStreamFrame(QuicStreamId stream_id, 3075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool fin, 3082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicStreamOffset offset, 3095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::StringPiece data); 3105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicStreamId stream_id; 3125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool fin; 3132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicStreamOffset offset; // Location of this data in the stream. 3145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::StringPiece data; 3155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 3165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// TODO(ianswett): Re-evaluate the trade-offs of hash_set vs set when framing 3182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// is finalized. 3192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)typedef std::set<QuicPacketSequenceNumber> SequenceNumberSet; 3202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// TODO(pwestin): Add a way to enforce the max size of this map. 3212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)typedef std::map<QuicPacketSequenceNumber, QuicTime> TimeMap; 3222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE ReceivedPacketInfo { 3245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReceivedPacketInfo(); 3255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ~ReceivedPacketInfo(); 3262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) NET_EXPORT_PRIVATE friend std::ostream& operator<<( 3272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::ostream& os, const ReceivedPacketInfo& s); 3282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Entropy hash of all packets up to largest observed not including missing 3302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // packets. 3312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketEntropyHash entropy_hash; 3322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // The highest packet sequence number we've observed from the peer. 3342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // 3352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // In general, this should be the largest packet number we've received. In 3362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // the case of truncated acks, we may have to advertise a lower "upper bound" 3372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // than largest received, to avoid implicitly acking missing packets that 3382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // don't fit in the missing packet list due to size limitations. In this 3392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // case, largest_observed may be a packet which is also in the missing packets 3402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // list. 3412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketSequenceNumber largest_observed; 3422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Time elapsed since largest_observed was received until this Ack frame was 3442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // sent. 3452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicTime::Delta delta_time_largest_observed; 3462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // TODO(satyamshekhar): Can be optimized using an interval set like data 3482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // structure. 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The set of packets which we're expecting and have not received. 3502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SequenceNumberSet missing_packets; 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 3525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// True if the sequence number is greater than largest_observed or is listed 3542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// as missing. 3552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Always returns false for sequence numbers less than least_unacked. 3562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)bool NET_EXPORT_PRIVATE IsAwaitingPacket( 3572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const ReceivedPacketInfo& received_info, 3582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketSequenceNumber sequence_number); 3592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Inserts missing packets between [lower, higher). 3612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void NET_EXPORT_PRIVATE InsertMissingPacketsBetween( 3622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ReceivedPacketInfo* received_info, 3632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketSequenceNumber lower, 3642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketSequenceNumber higher); 3652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE SentPacketInfo { 3675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SentPacketInfo(); 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ~SentPacketInfo(); 3692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) NET_EXPORT_PRIVATE friend std::ostream& operator<<( 3702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::ostream& os, const SentPacketInfo& s); 3712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Entropy hash of all packets up to, but not including, the least unacked 3732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // packet. 3742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketEntropyHash entropy_hash; 3755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The lowest packet we've sent which is unacked, and we expect an ack for. 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicPacketSequenceNumber least_unacked; 3772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 3782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)struct NET_EXPORT_PRIVATE QuicAckFrame { 3802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicAckFrame() {} 3812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Testing convenience method to construct a QuicAckFrame with all packets 3822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // from least_unacked to largest_observed acked. 3832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicAckFrame(QuicPacketSequenceNumber largest_observed, 3842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicTime largest_observed_receive_time, 3852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketSequenceNumber least_unacked); 3862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) NET_EXPORT_PRIVATE friend std::ostream& operator<<( 3882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::ostream& os, const QuicAckFrame& s); 3892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SentPacketInfo sent_info; 3912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ReceivedPacketInfo received_info; 3925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Defines for all types of congestion feedback that will be negotiated in QUIC, 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// kTCP MUST be supported by all QUIC implementations to guarentee 100% 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// compatibility. 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)enum CongestionFeedbackType { 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) kTCP, // Used to mimic TCP. 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) kInterArrival, // Use additional inter arrival information. 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) kFixRate, // Provided for testing. 4015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 4025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE CongestionFeedbackMessageTCP { 4045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint16 accumulated_number_of_lost_packets; 4052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicByteCount receive_window; 4065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 4075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE CongestionFeedbackMessageInterArrival { 4092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CongestionFeedbackMessageInterArrival(); 4102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ~CongestionFeedbackMessageInterArrival(); 4115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint16 accumulated_number_of_lost_packets; 4122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // The set of received packets since the last feedback was sent, along with 4132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // their arrival times. 4142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) TimeMap received_packet_times; 4155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 4165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE CongestionFeedbackMessageFixRate { 4182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CongestionFeedbackMessageFixRate(); 4192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicBandwidth bitrate; 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)struct NET_EXPORT_PRIVATE QuicCongestionFeedbackFrame { 4232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicCongestionFeedbackFrame(); 4242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ~QuicCongestionFeedbackFrame(); 4255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) NET_EXPORT_PRIVATE friend std::ostream& operator<<( 4272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::ostream& os, const QuicCongestionFeedbackFrame& c); 4285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CongestionFeedbackType type; 4302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // This should really be a union, but since the inter arrival struct 4312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // is non-trivial, C++ prohibits it. 4322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CongestionFeedbackMessageTCP tcp; 4332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CongestionFeedbackMessageInterArrival inter_arrival; 4342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) CongestionFeedbackMessageFixRate fix_rate; 4355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 4365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE QuicRstStreamFrame { 4385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicRstStreamFrame() {} 439c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QuicRstStreamFrame(QuicStreamId stream_id, QuicRstStreamErrorCode error_code) 4402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : stream_id(stream_id), error_code(error_code) { 4415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK_LE(error_code, std::numeric_limits<uint8>::max()); 4425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicStreamId stream_id; 445c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) QuicRstStreamErrorCode error_code; 4465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string error_details; 4475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 4485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE QuicConnectionCloseFrame { 4505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicErrorCode error_code; 4515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string error_details; 4522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicAckFrame ack_frame; 4532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 4542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)struct NET_EXPORT_PRIVATE QuicGoAwayFrame { 4562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicGoAwayFrame() {} 4572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicGoAwayFrame(QuicErrorCode error_code, 4582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicStreamId last_good_stream_id, 4592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const std::string& reason); 4602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicErrorCode error_code; 4622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicStreamId last_good_stream_id; 4632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::string reason_phrase; 4645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 4655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 466c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// EncryptionLevel enumerates the stages of encryption that a QUIC connection 467c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// progresses through. When retransmitting a packet, the encryption level needs 468c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// to be specified so that it is retransmitted at a level which the peer can 469c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// understand. 470c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)enum EncryptionLevel { 471c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ENCRYPTION_NONE = 0, 472c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ENCRYPTION_INITIAL = 1, 473c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ENCRYPTION_FORWARD_SECURE = 2, 474c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 475c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) NUM_ENCRYPTION_LEVELS, 476c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)}; 477c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 4785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE QuicFrame { 4795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicFrame() {} 4802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) explicit QuicFrame(QuicPaddingFrame* padding_frame) 4812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : type(PADDING_FRAME), 4822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) padding_frame(padding_frame) { 4832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 4845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit QuicFrame(QuicStreamFrame* stream_frame) 4852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : type(STREAM_FRAME), 4862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) stream_frame(stream_frame) { 4875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit QuicFrame(QuicAckFrame* frame) 4892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : type(ACK_FRAME), 4902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ack_frame(frame) { 4912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 4922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) explicit QuicFrame(QuicCongestionFeedbackFrame* frame) 4932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : type(CONGESTION_FEEDBACK_FRAME), 4942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) congestion_feedback_frame(frame) { 4955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit QuicFrame(QuicRstStreamFrame* frame) 4975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : type(RST_STREAM_FRAME), 4985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) rst_stream_frame(frame) { 4995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) explicit QuicFrame(QuicConnectionCloseFrame* frame) 5015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : type(CONNECTION_CLOSE_FRAME), 5025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) connection_close_frame(frame) { 5035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) explicit QuicFrame(QuicGoAwayFrame* frame) 5052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : type(GOAWAY_FRAME), 5062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) goaway_frame(frame) { 5072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 5085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicFrameType type; 5105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) union { 5112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPaddingFrame* padding_frame; 5125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicStreamFrame* stream_frame; 5135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicAckFrame* ack_frame; 5142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicCongestionFeedbackFrame* congestion_feedback_frame; 5155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicRstStreamFrame* rst_stream_frame; 5165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicConnectionCloseFrame* connection_close_frame; 5172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicGoAwayFrame* goaway_frame; 5185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 5195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 5205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef std::vector<QuicFrame> QuicFrames; 5225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE QuicFecData { 5245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicFecData(); 5255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool operator==(const QuicFecData& other) const; 5275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // The FEC group number is also the sequence number of the first 5292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // FEC protected packet. The last protected packet's sequence number will 5302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // be one less than the sequence number of the FEC packet. 5315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicFecGroupNumber fec_group; 5325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::StringPiece redundancy; 5335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 5345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct NET_EXPORT_PRIVATE QuicPacketData { 5365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string data; 5375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 5385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class NET_EXPORT_PRIVATE QuicData { 5405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 5415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicData(const char* buffer, size_t length) 5425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : buffer_(buffer), 5435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) length_(length), 5442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) owns_buffer_(false) {} 5455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicData(char* buffer, size_t length, bool owns_buffer) 5475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : buffer_(buffer), 5485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) length_(length), 5492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) owns_buffer_(owns_buffer) {} 5505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~QuicData(); 5525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::StringPiece AsStringPiece() const { 5545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return base::StringPiece(data(), length()); 5555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char* data() const { return buffer_; } 5585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t length() const { return length_; } 5595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 5615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char* buffer_; 5625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t length_; 5635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool owns_buffer_; 5645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(QuicData); 5665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 5675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class NET_EXPORT_PRIVATE QuicPacket : public QuicData { 5695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 5702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) static QuicPacket* NewDataPacket(char* buffer, 5712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) size_t length, 5722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool owns_buffer, 5732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool includes_version) { 5742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return new QuicPacket(buffer, length, owns_buffer, includes_version, false); 5755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) static QuicPacket* NewFecPacket(char* buffer, 5782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) size_t length, 5792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool owns_buffer, 5802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool includes_version) { 5812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return new QuicPacket(buffer, length, owns_buffer, includes_version, true); 5825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::StringPiece FecProtectedData() const; 5852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::StringPiece AssociatedData() const; 5862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::StringPiece BeforePlaintext() const; 5872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::StringPiece Plaintext() const; 5885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool is_fec_packet() const { return is_fec_packet_; } 5902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool includes_version() const { return includes_version_; } 5925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char* mutable_data() { return buffer_; } 5945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 5962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacket(char* buffer, 5972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) size_t length, 5982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool owns_buffer, 5992a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool includes_version, 6002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool is_fec_packet) 6012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : QuicData(buffer, length, owns_buffer), 6022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) buffer_(buffer), 6032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) is_fec_packet_(is_fec_packet), 6042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) includes_version_(includes_version) {} 6052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 6065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char* buffer_; 6072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const bool is_fec_packet_; 6082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const bool includes_version_; 6095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(QuicPacket); 6115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 6125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class NET_EXPORT_PRIVATE QuicEncryptedPacket : public QuicData { 6145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 6155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicEncryptedPacket(const char* buffer, size_t length) 6162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : QuicData(buffer, length) {} 6175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QuicEncryptedPacket(char* buffer, size_t length, bool owns_buffer) 6192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : QuicData(buffer, length, owns_buffer) {} 6205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // By default, gtest prints the raw bytes of an object. The bool data 6222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // member (in the base class QuicData) causes this object to have padding 6232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // bytes, which causes the default gtest object printer to read 6242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // uninitialize memory. So we need to teach gtest how to print this object. 6252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) NET_EXPORT_PRIVATE friend std::ostream& operator<<( 6262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::ostream& os, const QuicEncryptedPacket& s); 6275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 6295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(QuicEncryptedPacket); 6305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 6315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)class NET_EXPORT_PRIVATE RetransmittableFrames { 6332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) public: 6342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) RetransmittableFrames(); 6352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ~RetransmittableFrames(); 6362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 6372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Allocates a local copy of the referenced StringPiece has QuicStreamFrame 6382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // use it. 6392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Takes ownership of |stream_frame|. 6402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const QuicFrame& AddStreamFrame(QuicStreamFrame* stream_frame); 6412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Takes ownership of the frame inside |frame|. 6422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const QuicFrame& AddNonStreamFrame(const QuicFrame& frame); 6432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const QuicFrames& frames() const { return frames_; } 6442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 645c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) void set_encryption_level(EncryptionLevel level); 646c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) EncryptionLevel encryption_level() const { 647c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return encryption_level_; 648c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } 649c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 6502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) private: 6512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicFrames frames_; 652c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) EncryptionLevel encryption_level_; 6532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Data referenced by the StringPiece of a QuicStreamFrame. 6542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::vector<std::string*> stream_data_; 6552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 6562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(RetransmittableFrames); 6572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 6582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 6592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)struct NET_EXPORT_PRIVATE SerializedPacket { 6602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SerializedPacket(QuicPacketSequenceNumber sequence_number, 6612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacket* packet, 6622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketEntropyHash entropy_hash, 6632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) RetransmittableFrames* retransmittable_frames) 6642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : sequence_number(sequence_number), 6652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) packet(packet), 6662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) entropy_hash(entropy_hash), 6672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) retransmittable_frames(retransmittable_frames) {} 6682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 6692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketSequenceNumber sequence_number; 6702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacket* packet; 6712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicPacketEntropyHash entropy_hash; 6722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) RetransmittableFrames* retransmittable_frames; 6732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 6742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 6752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// A struct for functions which consume data payloads and fins. 6762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// The first member of the pair indicates bytes consumed. 6772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// The second member of the pair indicates if an incoming fin was consumed. 6782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)struct QuicConsumedData { 6792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) QuicConsumedData(size_t bytes_consumed, bool fin_consumed) 6802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : bytes_consumed(bytes_consumed), 6812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) fin_consumed(fin_consumed) {} 6822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 6832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // By default, gtest prints the raw bytes of an object. The bool data 6842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // member causes this object to have padding bytes, which causes the 6852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // default gtest object printer to read uninitialize memory. So we need 6862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // to teach gtest how to print this object. 6872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) NET_EXPORT_PRIVATE friend std::ostream& operator<<( 6882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::ostream& os, const QuicConsumedData& s); 6892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 6902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) size_t bytes_consumed; 6912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool fin_consumed; 6922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 6932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 6945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace net 6955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // NET_QUIC_QUIC_PROTOCOL_H_ 697