net/quic/quic_protocol.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "net/quic/quic_protocol.h"
   6
   7 #include "base/stl_util.h"
   8 #include "net/quic/quic_utils.h"
   9
  10 using base::StringPiece;
  11 using std::map;
  12 using std::numeric_limits;
  13 using std::ostream;
  14 using std::string;
  15
  16 namespace net {
  17
  18 size_t GetPacketHeaderSize(const QuicPacketHeader& header) {
  19   return GetPacketHeaderSize(header.public_header.connection_id_length,
  20                              header.public_header.version_flag,
  21                              header.public_header.packet_number_length,
  22                              header.is_in_fec_group);
  23 }
  24
  25 size_t GetPacketHeaderSize(QuicConnectionIdLength connection_id_length,
  26                            bool include_version,
  27                            QuicPacketNumberLength packet_number_length,
  28                            InFecGroup is_in_fec_group) {
  29   return kPublicFlagsSize + connection_id_length +
  30          (include_version ? kQuicVersionSize : 0) + packet_number_length +
  31          kPrivateFlagsSize +
  32          (is_in_fec_group == IN_FEC_GROUP ? kFecGroupSize : 0);
  33 }
  34
  35 size_t GetStartOfFecProtectedData(QuicConnectionIdLength connection_id_length,
  36                                   bool include_version,
  37                                   QuicPacketNumberLength packet_number_length) {
  38   return GetPacketHeaderSize(connection_id_length, include_version,
  39                              packet_number_length, IN_FEC_GROUP);
  40 }
  41
  42 size_t GetStartOfEncryptedData(QuicConnectionIdLength connection_id_length,
  43                                bool include_version,
  44                                QuicPacketNumberLength packet_number_length) {
  45   // Don't include the fec size, since encryption starts before private flags.
  46   return GetPacketHeaderSize(connection_id_length, include_version,
  47                              packet_number_length, NOT_IN_FEC_GROUP) -
  48          kPrivateFlagsSize;
  49 }
  50
  51 QuicPacketPublicHeader::QuicPacketPublicHeader()
  52     : connection_id(0),
  53       connection_id_length(PACKET_8BYTE_CONNECTION_ID),
  54       reset_flag(false),
  55       version_flag(false),
  56       packet_number_length(PACKET_6BYTE_PACKET_NUMBER) {}
  57
  58 QuicPacketPublicHeader::QuicPacketPublicHeader(
  59     const QuicPacketPublicHeader& other)
  60     : connection_id(other.connection_id),
  61       connection_id_length(other.connection_id_length),
  62       reset_flag(other.reset_flag),
  63       version_flag(other.version_flag),
  64       packet_number_length(other.packet_number_length),
  65       versions(other.versions) {}
  66
  67 QuicPacketPublicHeader::~QuicPacketPublicHeader() {}
  68
  69 QuicPacketHeader::QuicPacketHeader()
  70     : packet_packet_number(0),
  71       fec_flag(false),
  72       entropy_flag(false),
  73       entropy_hash(0),
  74       is_in_fec_group(NOT_IN_FEC_GROUP),
  75       fec_group(0) {}
  76
  77 QuicPacketHeader::QuicPacketHeader(const QuicPacketPublicHeader& header)
  78     : public_header(header),
  79       packet_packet_number(0),
  80       fec_flag(false),
  81       entropy_flag(false),
  82       entropy_hash(0),
  83       is_in_fec_group(NOT_IN_FEC_GROUP),
  84       fec_group(0) {}
  85
  86 QuicPublicResetPacket::QuicPublicResetPacket()
  87     : nonce_proof(0), rejected_packet_number(0) {}
  88
  89 QuicPublicResetPacket::QuicPublicResetPacket(
  90     const QuicPacketPublicHeader& header)
  91     : public_header(header), nonce_proof(0), rejected_packet_number(0) {}
  92
  93 QuicStreamFrame::QuicStreamFrame() : stream_id(0), fin(false), offset(0) {
  94 }
  95
  96 QuicStreamFrame::QuicStreamFrame(const QuicStreamFrame& frame)
  97     : stream_id(frame.stream_id),
  98       fin(frame.fin),
  99       offset(frame.offset),
 100       data(frame.data) {
 101 }
 102
 103 QuicStreamFrame::QuicStreamFrame(QuicStreamId stream_id,
 104                                  bool fin,
 105                                  QuicStreamOffset offset,
 106                                  StringPiece data)
 107     : stream_id(stream_id), fin(fin), offset(offset), data(data) {
 108 }
 109
 110 uint32 MakeQuicTag(char a, char b, char c, char d) {
 111   return static_cast<uint32>(a) |
 112          static_cast<uint32>(b) << 8 |
 113          static_cast<uint32>(c) << 16 |
 114          static_cast<uint32>(d) << 24;
 115 }
 116
 117 bool ContainsQuicTag(const QuicTagVector& tag_vector, QuicTag tag) {
 118   return std::find(tag_vector.begin(), tag_vector.end(),  tag)
 119       != tag_vector.end();
 120 }
 121
 122 QuicVersionVector QuicSupportedVersions() {
 123   QuicVersionVector supported_versions;
 124   for (size_t i = 0; i < arraysize(kSupportedQuicVersions); ++i) {
 125     supported_versions.push_back(kSupportedQuicVersions[i]);
 126   }
 127   return supported_versions;
 128 }
 129
 130 QuicTag QuicVersionToQuicTag(const QuicVersion version) {
 131   switch (version) {
 132     case QUIC_VERSION_24:
 133       return MakeQuicTag('Q', '0', '2', '4');
 134     case QUIC_VERSION_25:
 135       return MakeQuicTag('Q', '0', '2', '5');
 136     default:
 137       // This shold be an ERROR because we should never attempt to convert an
 138       // invalid QuicVersion to be written to the wire.
 139       LOG(ERROR) << "Unsupported QuicVersion: " << version;
 140       return 0;
 141   }
 142 }
 143
 144 QuicVersion QuicTagToQuicVersion(const QuicTag version_tag) {
 145   for (size_t i = 0; i < arraysize(kSupportedQuicVersions); ++i) {
 146     if (version_tag == QuicVersionToQuicTag(kSupportedQuicVersions[i])) {
 147       return kSupportedQuicVersions[i];
 148     }
 149   }
 150   // Reading from the client so this should not be considered an ERROR.
 151   DVLOG(1) << "Unsupported QuicTag version: "
 152            << QuicUtils::TagToString(version_tag);
 153   return QUIC_VERSION_UNSUPPORTED;
 154 }
 155
 156 #define RETURN_STRING_LITERAL(x) \
 157 case x: \
 158 return #x
 159
 160 string QuicVersionToString(const QuicVersion version) {
 161   switch (version) {
 162     RETURN_STRING_LITERAL(QUIC_VERSION_24);
 163     RETURN_STRING_LITERAL(QUIC_VERSION_25);
 164     default:
 165       return "QUIC_VERSION_UNSUPPORTED";
 166   }
 167 }
 168
 169 string QuicVersionVectorToString(const QuicVersionVector& versions) {
 170   string result = "";
 171   for (size_t i = 0; i < versions.size(); ++i) {
 172     if (i != 0) {
 173       result.append(",");
 174     }
 175     result.append(QuicVersionToString(versions[i]));
 176   }
 177   return result;
 178 }
 179
 180 ostream& operator<<(ostream& os, const Perspective& s) {
 181   if (s == Perspective::IS_SERVER) {
 182     os << "IS_SERVER";
 183   } else {
 184     os << "IS_CLIENT";
 185   }
 186   return os;
 187 }
 188
 189 ostream& operator<<(ostream& os, const QuicPacketHeader& header) {
 190   os << "{ connection_id: " << header.public_header.connection_id
 191      << ", connection_id_length:" << header.public_header.connection_id_length
 192      << ", packet_number_length:" << header.public_header.packet_number_length
 193      << ", reset_flag: " << header.public_header.reset_flag
 194      << ", version_flag: " << header.public_header.version_flag;
 195   if (header.public_header.version_flag) {
 196     os << " version: ";
 197     for (size_t i = 0; i < header.public_header.versions.size(); ++i) {
 198       os << header.public_header.versions[i] << " ";
 199     }
 200   }
 201   os << ", fec_flag: " << header.fec_flag
 202      << ", entropy_flag: " << header.entropy_flag
 203      << ", entropy hash: " << static_cast<int>(header.entropy_hash)
 204      << ", packet_number: " << header.packet_packet_number
 205      << ", is_in_fec_group:" << header.is_in_fec_group
 206      << ", fec_group: " << header.fec_group << "}\n";
 207   return os;
 208 }
 209
 210 bool IsAwaitingPacket(const QuicAckFrame& ack_frame,
 211                       QuicPacketNumber packet_number) {
 212   return packet_number > ack_frame.largest_observed ||
 213          ContainsKey(ack_frame.missing_packets, packet_number);
 214 }
 215
 216 void InsertMissingPacketsBetween(QuicAckFrame* ack_frame,
 217                                  QuicPacketNumber lower,
 218                                  QuicPacketNumber higher) {
 219   for (QuicPacketNumber i = lower; i < higher; ++i) {
 220     ack_frame->missing_packets.insert(i);
 221   }
 222 }
 223
 224 QuicStopWaitingFrame::QuicStopWaitingFrame()
 225     : entropy_hash(0),
 226       least_unacked(0) {
 227 }
 228
 229 QuicStopWaitingFrame::~QuicStopWaitingFrame() {}
 230
 231 QuicAckFrame::QuicAckFrame()
 232     : entropy_hash(0),
 233       largest_observed(0),
 234       delta_time_largest_observed(QuicTime::Delta::Infinite()),
 235       is_truncated(false) {}
 236
 237 QuicAckFrame::~QuicAckFrame() {}
 238
 239 QuicRstStreamErrorCode AdjustErrorForVersion(
 240     QuicRstStreamErrorCode error_code,
 241     QuicVersion version) {
 242   return error_code;
 243 }
 244
 245 QuicRstStreamFrame::QuicRstStreamFrame()
 246     : stream_id(0), error_code(QUIC_STREAM_NO_ERROR), byte_offset(0) {}
 247
 248 QuicRstStreamFrame::QuicRstStreamFrame(QuicStreamId stream_id,
 249                                        QuicRstStreamErrorCode error_code,
 250                                        QuicStreamOffset bytes_written)
 251     : stream_id(stream_id),
 252       error_code(error_code),
 253       byte_offset(bytes_written) {
 254   DCHECK_LE(error_code, numeric_limits<uint8>::max());
 255 }
 256
 257 QuicConnectionCloseFrame::QuicConnectionCloseFrame()
 258     : error_code(QUIC_NO_ERROR) {
 259 }
 260
 261 QuicFrame::QuicFrame() {}
 262
 263 QuicFrame::QuicFrame(QuicPaddingFrame* padding_frame)
 264     : type(PADDING_FRAME),
 265       padding_frame(padding_frame) {
 266 }
 267
 268 QuicFrame::QuicFrame(QuicStreamFrame* stream_frame)
 269     : type(STREAM_FRAME),
 270       stream_frame(stream_frame) {
 271 }
 272
 273 QuicFrame::QuicFrame(QuicAckFrame* frame)
 274     : type(ACK_FRAME),
 275       ack_frame(frame) {
 276 }
 277
 278 QuicFrame::QuicFrame(QuicMtuDiscoveryFrame* frame)
 279     : type(MTU_DISCOVERY_FRAME), mtu_discovery_frame(frame) {
 280 }
 281
 282 QuicFrame::QuicFrame(QuicStopWaitingFrame* frame)
 283     : type(STOP_WAITING_FRAME),
 284       stop_waiting_frame(frame) {
 285 }
 286
 287 QuicFrame::QuicFrame(QuicPingFrame* frame)
 288     : type(PING_FRAME),
 289       ping_frame(frame) {
 290 }
 291
 292 QuicFrame::QuicFrame(QuicRstStreamFrame* frame)
 293     : type(RST_STREAM_FRAME),
 294       rst_stream_frame(frame) {
 295 }
 296
 297 QuicFrame::QuicFrame(QuicConnectionCloseFrame* frame)
 298     : type(CONNECTION_CLOSE_FRAME),
 299       connection_close_frame(frame) {
 300 }
 301
 302 QuicFrame::QuicFrame(QuicGoAwayFrame* frame)
 303     : type(GOAWAY_FRAME),
 304       goaway_frame(frame) {
 305 }
 306
 307 QuicFrame::QuicFrame(QuicWindowUpdateFrame* frame)
 308     : type(WINDOW_UPDATE_FRAME),
 309       window_update_frame(frame) {
 310 }
 311
 312 QuicFrame::QuicFrame(QuicBlockedFrame* frame)
 313     : type(BLOCKED_FRAME),
 314       blocked_frame(frame) {
 315 }
 316
 317 QuicFecData::QuicFecData() : fec_group(0) {}
 318
 319 ostream& operator<<(ostream& os, const QuicStopWaitingFrame& sent_info) {
 320   os << "entropy_hash: " << static_cast<int>(sent_info.entropy_hash)
 321      << " least_unacked: " << sent_info.least_unacked;
 322   return os;
 323 }
 324
 325 ostream& operator<<(ostream& os, const QuicAckFrame& ack_frame) {
 326   os << "entropy_hash: " << static_cast<int>(ack_frame.entropy_hash)
 327      << " largest_observed: " << ack_frame.largest_observed
 328      << " delta_time_largest_observed: "
 329      << ack_frame.delta_time_largest_observed.ToMicroseconds()
 330      << " missing_packets: [ ";
 331   for (PacketNumberSet::const_iterator it = ack_frame.missing_packets.begin();
 332        it != ack_frame.missing_packets.end(); ++it) {
 333     os << *it << " ";
 334   }
 335   os << " ] is_truncated: " << ack_frame.is_truncated;
 336   os << " revived_packets: [ ";
 337   for (PacketNumberSet::const_iterator it = ack_frame.revived_packets.begin();
 338        it != ack_frame.revived_packets.end(); ++it) {
 339     os << *it << " ";
 340   }
 341   os << " ] received_packets: [ ";
 342   for (PacketTimeList::const_iterator it =
 343            ack_frame.received_packet_times.begin();
 344            it != ack_frame.received_packet_times.end(); ++it) {
 345     os << it->first << " at " << it->second.ToDebuggingValue() << " ";
 346   }
 347   os << " ]";
 348   return os;
 349 }
 350
 351 ostream& operator<<(ostream& os, const QuicFrame& frame) {
 352   switch (frame.type) {
 353   case PADDING_FRAME: {
 354       os << "type { PADDING_FRAME } ";
 355       break;
 356     }
 357     case RST_STREAM_FRAME: {
 358       os << "type { RST_STREAM_FRAME } " << *(frame.rst_stream_frame);
 359       break;
 360     }
 361     case CONNECTION_CLOSE_FRAME: {
 362       os << "type { CONNECTION_CLOSE_FRAME } "
 363          << *(frame.connection_close_frame);
 364       break;
 365     }
 366     case GOAWAY_FRAME: {
 367       os << "type { GOAWAY_FRAME } " << *(frame.goaway_frame);
 368       break;
 369     }
 370     case WINDOW_UPDATE_FRAME: {
 371       os << "type { WINDOW_UPDATE_FRAME } " << *(frame.window_update_frame);
 372       break;
 373     }
 374     case BLOCKED_FRAME: {
 375       os << "type { BLOCKED_FRAME } " << *(frame.blocked_frame);
 376       break;
 377     }
 378     case STREAM_FRAME: {
 379       os << "type { STREAM_FRAME } " << *(frame.stream_frame);
 380       break;
 381     }
 382     case ACK_FRAME: {
 383       os << "type { ACK_FRAME } " << *(frame.ack_frame);
 384       break;
 385     }
 386     case STOP_WAITING_FRAME: {
 387       os << "type { STOP_WAITING_FRAME } " << *(frame.stop_waiting_frame);
 388       break;
 389     }
 390     case PING_FRAME: {
 391       os << "type { PING_FRAME } ";
 392       break;
 393     }
 394     case MTU_DISCOVERY_FRAME: {
 395       os << "type { MTU_DISCOVERY_FRAME } ";
 396       break;
 397     }
 398     default: {
 399       LOG(ERROR) << "Unknown frame type: " << frame.type;
 400       break;
 401     }
 402   }
 403   return os;
 404 }
 405
 406 ostream& operator<<(ostream& os, const QuicRstStreamFrame& rst_frame) {
 407   os << "stream_id { " << rst_frame.stream_id << " } "
 408      << "error_code { " << rst_frame.error_code << " } "
 409      << "error_details { " << rst_frame.error_details << " }\n";
 410   return os;
 411 }
 412
 413 ostream& operator<<(ostream& os,
 414                     const QuicConnectionCloseFrame& connection_close_frame) {
 415   os << "error_code { " << connection_close_frame.error_code << " } "
 416      << "error_details { " << connection_close_frame.error_details << " }\n";
 417   return os;
 418 }
 419
 420 ostream& operator<<(ostream& os, const QuicGoAwayFrame& goaway_frame) {
 421   os << "error_code { " << goaway_frame.error_code << " } "
 422      << "last_good_stream_id { " << goaway_frame.last_good_stream_id << " } "
 423      << "reason_phrase { " << goaway_frame.reason_phrase << " }\n";
 424   return os;
 425 }
 426
 427 ostream& operator<<(ostream& os,
 428                     const QuicWindowUpdateFrame& window_update_frame) {
 429   os << "stream_id { " << window_update_frame.stream_id << " } "
 430      << "byte_offset { " << window_update_frame.byte_offset << " }\n";
 431   return os;
 432 }
 433
 434 ostream& operator<<(ostream& os, const QuicBlockedFrame& blocked_frame) {
 435   os << "stream_id { " << blocked_frame.stream_id << " }\n";
 436   return os;
 437 }
 438
 439 ostream& operator<<(ostream& os, const QuicStreamFrame& stream_frame) {
 440   os << "stream_id { " << stream_frame.stream_id << " } "
 441      << "fin { " << stream_frame.fin << " } "
 442      << "offset { " << stream_frame.offset << " } "
 443      << "data { " << QuicUtils::StringToHexASCIIDump(stream_frame.data)
 444      << " }\n";
 445   return os;
 446 }
 447
 448 QuicGoAwayFrame::QuicGoAwayFrame()
 449     : error_code(QUIC_NO_ERROR),
 450       last_good_stream_id(0) {
 451 }
 452
 453 QuicGoAwayFrame::QuicGoAwayFrame(QuicErrorCode error_code,
 454                                  QuicStreamId last_good_stream_id,
 455                                  const string& reason)
 456     : error_code(error_code),
 457       last_good_stream_id(last_good_stream_id),
 458       reason_phrase(reason) {
 459   DCHECK_LE(error_code, numeric_limits<uint8>::max());
 460 }
 461
 462 QuicData::QuicData(const char* buffer,
 463                    size_t length)
 464     : buffer_(buffer),
 465       length_(length),
 466       owns_buffer_(false) {
 467 }
 468
 469 QuicData::QuicData(char* buffer,
 470                    size_t length,
 471                    bool owns_buffer)
 472     : buffer_(buffer),
 473       length_(length),
 474       owns_buffer_(owns_buffer) {
 475 }
 476
 477 QuicData::~QuicData() {
 478   if (owns_buffer_) {
 479     delete [] const_cast<char*>(buffer_);
 480   }
 481 }
 482
 483 QuicWindowUpdateFrame::QuicWindowUpdateFrame(QuicStreamId stream_id,
 484                                              QuicStreamOffset byte_offset)
 485     : stream_id(stream_id),
 486       byte_offset(byte_offset) {}
 487
 488 QuicBlockedFrame::QuicBlockedFrame(QuicStreamId stream_id)
 489     : stream_id(stream_id) {}
 490
 491 QuicPacket::QuicPacket(char* buffer,
 492                        size_t length,
 493                        bool owns_buffer,
 494                        QuicConnectionIdLength connection_id_length,
 495                        bool includes_version,
 496                        QuicPacketNumberLength packet_number_length)
 497     : QuicData(buffer, length, owns_buffer),
 498       buffer_(buffer),
 499       connection_id_length_(connection_id_length),
 500       includes_version_(includes_version),
 501       packet_number_length_(packet_number_length) {}
 502
 503 QuicEncryptedPacket::QuicEncryptedPacket(const char* buffer,
 504                                          size_t length)
 505     : QuicData(buffer, length) {
 506 }
 507
 508 QuicEncryptedPacket::QuicEncryptedPacket(char* buffer,
 509                                          size_t length,
 510                                          bool owns_buffer)
 511       : QuicData(buffer, length, owns_buffer) {
 512 }
 513
 514 StringPiece QuicPacket::FecProtectedData() const {
 515   const size_t start_of_fec = GetStartOfFecProtectedData(
 516       connection_id_length_, includes_version_, packet_number_length_);
 517   return StringPiece(data() + start_of_fec, length() - start_of_fec);
 518 }
 519
 520 StringPiece QuicPacket::AssociatedData() const {
 521   return StringPiece(
 522       data() + kStartOfHashData,
 523       GetStartOfEncryptedData(connection_id_length_, includes_version_,
 524                               packet_number_length_) -
 525           kStartOfHashData);
 526 }
 527
 528 StringPiece QuicPacket::BeforePlaintext() const {
 529   return StringPiece(
 530       data(), GetStartOfEncryptedData(connection_id_length_, includes_version_,
 531                                       packet_number_length_));
 532 }
 533
 534 StringPiece QuicPacket::Plaintext() const {
 535   const size_t start_of_encrypted_data = GetStartOfEncryptedData(
 536       connection_id_length_, includes_version_, packet_number_length_);
 537   return StringPiece(data() + start_of_encrypted_data,
 538                      length() - start_of_encrypted_data);
 539 }
 540
 541 RetransmittableFrames::RetransmittableFrames(EncryptionLevel level)
 542     : encryption_level_(level),
 543       has_crypto_handshake_(NOT_HANDSHAKE),
 544       needs_padding_(false) {
 545 }
 546
 547 RetransmittableFrames::~RetransmittableFrames() {
 548   for (QuicFrames::iterator it = frames_.begin(); it != frames_.end(); ++it) {
 549     switch (it->type) {
 550       case PADDING_FRAME:
 551         delete it->padding_frame;
 552         break;
 553       case STREAM_FRAME:
 554         delete it->stream_frame;
 555         break;
 556       case ACK_FRAME:
 557         delete it->ack_frame;
 558         break;
 559       case MTU_DISCOVERY_FRAME:
 560         delete it->mtu_discovery_frame;
 561         break;
 562       case STOP_WAITING_FRAME:
 563         delete it->stop_waiting_frame;
 564         break;
 565       case PING_FRAME:
 566         delete it->ping_frame;
 567         break;
 568       case RST_STREAM_FRAME:
 569         delete it->rst_stream_frame;
 570         break;
 571       case CONNECTION_CLOSE_FRAME:
 572         delete it->connection_close_frame;
 573         break;
 574       case GOAWAY_FRAME:
 575         delete it->goaway_frame;
 576         break;
 577       case WINDOW_UPDATE_FRAME:
 578         delete it->window_update_frame;
 579         break;
 580       case BLOCKED_FRAME:
 581         delete it->blocked_frame;
 582         break;
 583       case NUM_FRAME_TYPES:
 584         DCHECK(false) << "Cannot delete type: " << it->type;
 585     }
 586   }
 587   for (const char* buffer : stream_data_) {
 588     delete[] buffer;
 589   }
 590 }
 591
 592 const QuicFrame& RetransmittableFrames::AddFrame(const QuicFrame& frame) {
 593   return AddFrame(frame, nullptr);
 594 }
 595
 596 const QuicFrame& RetransmittableFrames::AddFrame(const QuicFrame& frame,
 597                                                  char* buffer) {
 598   if (frame.type == STREAM_FRAME &&
 599       frame.stream_frame->stream_id == kCryptoStreamId) {
 600     has_crypto_handshake_ = IS_HANDSHAKE;
 601   }
 602   if (buffer != nullptr) {
 603     stream_data_.push_back(buffer);
 604   }
 605   frames_.push_back(frame);
 606   return frames_.back();
 607 }
 608
 609 void RetransmittableFrames::RemoveFramesForStream(QuicStreamId stream_id) {
 610   QuicFrames::iterator it = frames_.begin();
 611   while (it != frames_.end()) {
 612     if (it->type != STREAM_FRAME || it->stream_frame->stream_id != stream_id) {
 613       ++it;
 614       continue;
 615     }
 616     delete it->stream_frame;
 617     it = frames_.erase(it);
 618   }
 619 }
 620
 621 SerializedPacket::SerializedPacket(
 622     QuicPacketNumber packet_number,
 623     QuicPacketNumberLength packet_number_length,
 624     QuicEncryptedPacket* packet,
 625     QuicPacketEntropyHash entropy_hash,
 626     RetransmittableFrames* retransmittable_frames,
 627     bool has_ack,
 628     bool has_stop_waiting)
 629     : packet(packet),
 630       retransmittable_frames(retransmittable_frames),
 631       packet_number(packet_number),
 632       packet_number_length(packet_number_length),
 633       entropy_hash(entropy_hash),
 634       is_fec_packet(false),
 635       has_ack(has_ack),
 636       has_stop_waiting(has_stop_waiting) {}
 637
 638 SerializedPacket::~SerializedPacket() {}
 639
 640 QuicEncryptedPacket* QuicEncryptedPacket::Clone() const {
 641   char* buffer = new char[this->length()];
 642   memcpy(buffer, this->data(), this->length());
 643   return new QuicEncryptedPacket(buffer, this->length(), true);
 644 }
 645
 646 ostream& operator<<(ostream& os, const QuicEncryptedPacket& s) {
 647   os << s.length() << "-byte data";
 648   return os;
 649 }
 650
 651 TransmissionInfo::TransmissionInfo()
 652     : retransmittable_frames(nullptr),
 653       packet_number_length(PACKET_1BYTE_PACKET_NUMBER),
 654       sent_time(QuicTime::Zero()),
 655       bytes_sent(0),
 656       nack_count(0),
 657       transmission_type(NOT_RETRANSMISSION),
 658       all_transmissions(nullptr),
 659       in_flight(false),
 660       is_unackable(false),
 661       is_fec_packet(false) {}
 662
 663 TransmissionInfo::TransmissionInfo(
 664     RetransmittableFrames* retransmittable_frames,
 665     QuicPacketNumberLength packet_number_length,
 666     TransmissionType transmission_type,
 667     QuicTime sent_time,
 668     QuicByteCount bytes_sent,
 669     bool is_fec_packet)
 670     : retransmittable_frames(retransmittable_frames),
 671       packet_number_length(packet_number_length),
 672       sent_time(sent_time),
 673       bytes_sent(bytes_sent),
 674       nack_count(0),
 675       transmission_type(transmission_type),
 676       all_transmissions(nullptr),
 677       in_flight(false),
 678       is_unackable(false),
 679       is_fec_packet(is_fec_packet) {}
 680
 681 }  // namespace net