QUICHE team | a6ef0a6 | 2019-03-07 20:34:33 -0500 | [diff] [blame] | 1 | // Copyright 2013 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/third_party/quiche/src/quic/core/quic_sent_packet_manager.h" |
| 6 | |
| 7 | #include <memory> |
| 8 | |
| 9 | #include "net/third_party/quiche/src/quic/core/quic_pending_retransmission.h" |
| 10 | #include "net/third_party/quiche/src/quic/platform/api/quic_arraysize.h" |
| 11 | #include "net/third_party/quiche/src/quic/platform/api/quic_flags.h" |
| 12 | #include "net/third_party/quiche/src/quic/platform/api/quic_ptr_util.h" |
| 13 | #include "net/third_party/quiche/src/quic/platform/api/quic_string_piece.h" |
| 14 | #include "net/third_party/quiche/src/quic/platform/api/quic_test.h" |
| 15 | #include "net/third_party/quiche/src/quic/test_tools/quic_config_peer.h" |
| 16 | #include "net/third_party/quiche/src/quic/test_tools/quic_sent_packet_manager_peer.h" |
| 17 | #include "net/third_party/quiche/src/quic/test_tools/quic_test_utils.h" |
| 18 | |
| 19 | using testing::_; |
| 20 | using testing::AnyNumber; |
| 21 | using testing::Invoke; |
| 22 | using testing::InvokeWithoutArgs; |
| 23 | using testing::IsEmpty; |
| 24 | using testing::Not; |
| 25 | using testing::Pointwise; |
| 26 | using testing::Return; |
| 27 | using testing::StrictMock; |
| 28 | using testing::WithArgs; |
| 29 | |
| 30 | namespace quic { |
| 31 | namespace test { |
| 32 | namespace { |
| 33 | // Default packet length. |
| 34 | const uint32_t kDefaultLength = 1000; |
| 35 | |
| 36 | // Stream ID for data sent in CreatePacket(). |
| 37 | const QuicStreamId kStreamId = 7; |
| 38 | |
| 39 | // Matcher to check that the packet number matches the second argument. |
| 40 | MATCHER(PacketNumberEq, "") { |
| 41 | return ::testing::get<0>(arg).packet_number == |
| 42 | QuicPacketNumber(::testing::get<1>(arg)); |
| 43 | } |
| 44 | |
| 45 | class MockDebugDelegate : public QuicSentPacketManager::DebugDelegate { |
| 46 | public: |
| 47 | MOCK_METHOD2(OnSpuriousPacketRetransmission, |
| 48 | void(TransmissionType transmission_type, |
| 49 | QuicByteCount byte_size)); |
| 50 | MOCK_METHOD3(OnPacketLoss, |
| 51 | void(QuicPacketNumber lost_packet_number, |
| 52 | TransmissionType transmission_type, |
| 53 | QuicTime detection_time)); |
| 54 | }; |
| 55 | |
| 56 | class QuicSentPacketManagerTest : public QuicTestWithParam<bool> { |
| 57 | public: |
| 58 | void RetransmitCryptoPacket(uint64_t packet_number) { |
| 59 | EXPECT_CALL( |
| 60 | *send_algorithm_, |
| 61 | OnPacketSent(_, BytesInFlight(), QuicPacketNumber(packet_number), |
| 62 | kDefaultLength, HAS_RETRANSMITTABLE_DATA)); |
| 63 | SerializedPacket packet(CreatePacket(packet_number, false)); |
| 64 | packet.retransmittable_frames.push_back( |
| 65 | QuicFrame(QuicStreamFrame(1, false, 0, QuicStringPiece()))); |
| 66 | packet.has_crypto_handshake = IS_HANDSHAKE; |
| 67 | manager_.OnPacketSent(&packet, QuicPacketNumber(), clock_.Now(), |
| 68 | HANDSHAKE_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA); |
| 69 | } |
| 70 | |
| 71 | void RetransmitDataPacket(uint64_t packet_number, TransmissionType type) { |
| 72 | EXPECT_CALL( |
| 73 | *send_algorithm_, |
| 74 | OnPacketSent(_, BytesInFlight(), QuicPacketNumber(packet_number), |
| 75 | kDefaultLength, HAS_RETRANSMITTABLE_DATA)); |
| 76 | SerializedPacket packet(CreatePacket(packet_number, true)); |
| 77 | manager_.OnPacketSent(&packet, QuicPacketNumber(), clock_.Now(), type, |
| 78 | HAS_RETRANSMITTABLE_DATA); |
| 79 | } |
| 80 | |
| 81 | protected: |
| 82 | QuicSentPacketManagerTest() |
| 83 | : manager_(Perspective::IS_SERVER, &clock_, &stats_, kCubicBytes, kNack), |
| 84 | send_algorithm_(new StrictMock<MockSendAlgorithm>), |
| 85 | network_change_visitor_(new StrictMock<MockNetworkChangeVisitor>) { |
| 86 | QuicSentPacketManagerPeer::SetSendAlgorithm(&manager_, send_algorithm_); |
| 87 | // Disable tail loss probes for most tests. |
| 88 | QuicSentPacketManagerPeer::SetMaxTailLossProbes(&manager_, 0); |
| 89 | // Advance the time 1s so the send times are never QuicTime::Zero. |
| 90 | clock_.AdvanceTime(QuicTime::Delta::FromMilliseconds(1000)); |
| 91 | manager_.SetNetworkChangeVisitor(network_change_visitor_.get()); |
| 92 | manager_.SetSessionNotifier(¬ifier_); |
| 93 | manager_.SetSessionDecideWhatToWrite(GetParam()); |
| 94 | |
| 95 | EXPECT_CALL(*send_algorithm_, HasReliableBandwidthEstimate()) |
| 96 | .Times(AnyNumber()); |
| 97 | EXPECT_CALL(*send_algorithm_, BandwidthEstimate()) |
| 98 | .Times(AnyNumber()) |
| 99 | .WillRepeatedly(Return(QuicBandwidth::Zero())); |
| 100 | EXPECT_CALL(*send_algorithm_, InSlowStart()).Times(AnyNumber()); |
| 101 | EXPECT_CALL(*send_algorithm_, InRecovery()).Times(AnyNumber()); |
| 102 | EXPECT_CALL(*network_change_visitor_, OnPathMtuIncreased(1000)) |
| 103 | .Times(AnyNumber()); |
| 104 | EXPECT_CALL(notifier_, IsFrameOutstanding(_)).WillRepeatedly(Return(true)); |
| 105 | EXPECT_CALL(notifier_, HasUnackedCryptoData()) |
| 106 | .WillRepeatedly(Return(false)); |
| 107 | EXPECT_CALL(notifier_, OnStreamFrameRetransmitted(_)).Times(AnyNumber()); |
| 108 | EXPECT_CALL(notifier_, OnFrameAcked(_, _)).WillRepeatedly(Return(true)); |
| 109 | } |
| 110 | |
| 111 | ~QuicSentPacketManagerTest() override {} |
| 112 | |
| 113 | QuicByteCount BytesInFlight() { |
| 114 | return QuicSentPacketManagerPeer::GetBytesInFlight(&manager_); |
| 115 | } |
| 116 | void VerifyUnackedPackets(uint64_t* packets, size_t num_packets) { |
| 117 | if (num_packets == 0) { |
| 118 | EXPECT_TRUE(manager_.unacked_packets().empty()); |
| 119 | EXPECT_EQ(0u, QuicSentPacketManagerPeer::GetNumRetransmittablePackets( |
| 120 | &manager_)); |
| 121 | return; |
| 122 | } |
| 123 | |
| 124 | EXPECT_FALSE(manager_.unacked_packets().empty()); |
| 125 | EXPECT_EQ(QuicPacketNumber(packets[0]), manager_.GetLeastUnacked()); |
| 126 | for (size_t i = 0; i < num_packets; ++i) { |
| 127 | EXPECT_TRUE(QuicSentPacketManagerPeer::IsUnacked(&manager_, packets[i])) |
| 128 | << packets[i]; |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | void VerifyRetransmittablePackets(uint64_t* packets, size_t num_packets) { |
| 133 | EXPECT_EQ( |
| 134 | num_packets, |
| 135 | QuicSentPacketManagerPeer::GetNumRetransmittablePackets(&manager_)); |
| 136 | for (size_t i = 0; i < num_packets; ++i) { |
| 137 | EXPECT_TRUE(QuicSentPacketManagerPeer::HasRetransmittableFrames( |
| 138 | &manager_, packets[i])) |
| 139 | << " packets[" << i << "]:" << packets[i]; |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | void ExpectAck(uint64_t largest_observed) { |
| 144 | EXPECT_CALL( |
| 145 | *send_algorithm_, |
| 146 | // Ensure the AckedPacketVector argument contains largest_observed. |
| 147 | OnCongestionEvent(true, _, _, |
| 148 | Pointwise(PacketNumberEq(), {largest_observed}), |
| 149 | IsEmpty())); |
| 150 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 151 | } |
| 152 | |
| 153 | void ExpectUpdatedRtt(uint64_t largest_observed) { |
| 154 | EXPECT_CALL(*send_algorithm_, |
| 155 | OnCongestionEvent(true, _, _, IsEmpty(), IsEmpty())); |
| 156 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 157 | } |
| 158 | |
| 159 | void ExpectAckAndLoss(bool rtt_updated, |
| 160 | uint64_t largest_observed, |
| 161 | uint64_t lost_packet) { |
| 162 | EXPECT_CALL( |
| 163 | *send_algorithm_, |
| 164 | OnCongestionEvent(rtt_updated, _, _, |
| 165 | Pointwise(PacketNumberEq(), {largest_observed}), |
| 166 | Pointwise(PacketNumberEq(), {lost_packet}))); |
| 167 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 168 | } |
| 169 | |
| 170 | // |packets_acked| and |packets_lost| should be in packet number order. |
| 171 | void ExpectAcksAndLosses(bool rtt_updated, |
| 172 | uint64_t* packets_acked, |
| 173 | size_t num_packets_acked, |
| 174 | uint64_t* packets_lost, |
| 175 | size_t num_packets_lost) { |
| 176 | std::vector<QuicPacketNumber> ack_vector; |
| 177 | for (size_t i = 0; i < num_packets_acked; ++i) { |
| 178 | ack_vector.push_back(QuicPacketNumber(packets_acked[i])); |
| 179 | } |
| 180 | std::vector<QuicPacketNumber> lost_vector; |
| 181 | for (size_t i = 0; i < num_packets_lost; ++i) { |
| 182 | lost_vector.push_back(QuicPacketNumber(packets_lost[i])); |
| 183 | } |
| 184 | EXPECT_CALL(*send_algorithm_, |
| 185 | OnCongestionEvent(rtt_updated, _, _, |
| 186 | Pointwise(PacketNumberEq(), ack_vector), |
| 187 | Pointwise(PacketNumberEq(), lost_vector))); |
| 188 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()) |
| 189 | .Times(AnyNumber()); |
| 190 | } |
| 191 | |
| 192 | void RetransmitAndSendPacket(uint64_t old_packet_number, |
| 193 | uint64_t new_packet_number) { |
| 194 | RetransmitAndSendPacket(old_packet_number, new_packet_number, |
| 195 | TLP_RETRANSMISSION); |
| 196 | } |
| 197 | |
| 198 | void RetransmitAndSendPacket(uint64_t old_packet_number, |
| 199 | uint64_t new_packet_number, |
| 200 | TransmissionType transmission_type) { |
| 201 | bool is_lost = false; |
| 202 | if (manager_.session_decides_what_to_write()) { |
| 203 | if (transmission_type == HANDSHAKE_RETRANSMISSION || |
| 204 | transmission_type == TLP_RETRANSMISSION || |
| 205 | transmission_type == RTO_RETRANSMISSION || |
| 206 | transmission_type == PROBING_RETRANSMISSION) { |
| 207 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 208 | .WillOnce(WithArgs<1>( |
| 209 | Invoke([this, new_packet_number](TransmissionType type) { |
| 210 | RetransmitDataPacket(new_packet_number, type); |
| 211 | }))); |
| 212 | } else { |
| 213 | EXPECT_CALL(notifier_, OnFrameLost(_)).Times(1); |
| 214 | is_lost = true; |
| 215 | } |
| 216 | } |
| 217 | QuicSentPacketManagerPeer::MarkForRetransmission( |
| 218 | &manager_, old_packet_number, transmission_type); |
| 219 | if (manager_.session_decides_what_to_write()) { |
| 220 | if (!is_lost) { |
| 221 | return; |
| 222 | } |
| 223 | EXPECT_CALL( |
| 224 | *send_algorithm_, |
| 225 | OnPacketSent(_, BytesInFlight(), QuicPacketNumber(new_packet_number), |
| 226 | kDefaultLength, HAS_RETRANSMITTABLE_DATA)); |
| 227 | SerializedPacket packet(CreatePacket(new_packet_number, true)); |
| 228 | manager_.OnPacketSent(&packet, QuicPacketNumber(), clock_.Now(), |
| 229 | transmission_type, HAS_RETRANSMITTABLE_DATA); |
| 230 | return; |
| 231 | } |
| 232 | EXPECT_TRUE(manager_.HasPendingRetransmissions()); |
| 233 | QuicPendingRetransmission next_retransmission = |
| 234 | manager_.NextPendingRetransmission(); |
| 235 | EXPECT_EQ(QuicPacketNumber(old_packet_number), |
| 236 | next_retransmission.packet_number); |
| 237 | EXPECT_EQ(transmission_type, next_retransmission.transmission_type); |
| 238 | |
| 239 | EXPECT_CALL( |
| 240 | *send_algorithm_, |
| 241 | OnPacketSent(_, BytesInFlight(), QuicPacketNumber(new_packet_number), |
| 242 | kDefaultLength, HAS_RETRANSMITTABLE_DATA)); |
| 243 | SerializedPacket packet(CreatePacket(new_packet_number, false)); |
| 244 | manager_.OnPacketSent(&packet, QuicPacketNumber(old_packet_number), |
| 245 | clock_.Now(), transmission_type, |
| 246 | HAS_RETRANSMITTABLE_DATA); |
| 247 | EXPECT_TRUE(QuicSentPacketManagerPeer::IsRetransmission(&manager_, |
| 248 | new_packet_number)); |
| 249 | } |
| 250 | |
| 251 | SerializedPacket CreateDataPacket(uint64_t packet_number) { |
| 252 | return CreatePacket(packet_number, true); |
| 253 | } |
| 254 | |
| 255 | SerializedPacket CreatePacket(uint64_t packet_number, bool retransmittable) { |
| 256 | SerializedPacket packet(QuicPacketNumber(packet_number), |
| 257 | PACKET_4BYTE_PACKET_NUMBER, nullptr, kDefaultLength, |
| 258 | false, false); |
| 259 | if (retransmittable) { |
| 260 | packet.retransmittable_frames.push_back( |
| 261 | QuicFrame(QuicStreamFrame(kStreamId, false, 0, QuicStringPiece()))); |
| 262 | } |
| 263 | return packet; |
| 264 | } |
| 265 | |
| 266 | void SendDataPacket(uint64_t packet_number) { |
QUICHE team | c279cec | 2019-03-22 06:51:48 -0700 | [diff] [blame^] | 267 | SendDataPacket(packet_number, ENCRYPTION_INITIAL); |
| 268 | } |
| 269 | |
| 270 | void SendDataPacket(uint64_t packet_number, |
| 271 | EncryptionLevel encryption_level) { |
QUICHE team | a6ef0a6 | 2019-03-07 20:34:33 -0500 | [diff] [blame] | 272 | EXPECT_CALL(*send_algorithm_, |
| 273 | OnPacketSent(_, BytesInFlight(), |
| 274 | QuicPacketNumber(packet_number), _, _)); |
| 275 | SerializedPacket packet(CreateDataPacket(packet_number)); |
QUICHE team | c279cec | 2019-03-22 06:51:48 -0700 | [diff] [blame^] | 276 | packet.encryption_level = encryption_level; |
QUICHE team | a6ef0a6 | 2019-03-07 20:34:33 -0500 | [diff] [blame] | 277 | manager_.OnPacketSent(&packet, QuicPacketNumber(), clock_.Now(), |
| 278 | NOT_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA); |
| 279 | } |
| 280 | |
| 281 | void SendCryptoPacket(uint64_t packet_number) { |
| 282 | EXPECT_CALL( |
| 283 | *send_algorithm_, |
| 284 | OnPacketSent(_, BytesInFlight(), QuicPacketNumber(packet_number), |
| 285 | kDefaultLength, HAS_RETRANSMITTABLE_DATA)); |
| 286 | SerializedPacket packet(CreatePacket(packet_number, false)); |
| 287 | packet.retransmittable_frames.push_back( |
| 288 | QuicFrame(QuicStreamFrame(1, false, 0, QuicStringPiece()))); |
| 289 | packet.has_crypto_handshake = IS_HANDSHAKE; |
| 290 | manager_.OnPacketSent(&packet, QuicPacketNumber(), clock_.Now(), |
| 291 | NOT_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA); |
| 292 | if (manager_.session_decides_what_to_write()) { |
| 293 | EXPECT_CALL(notifier_, HasUnackedCryptoData()) |
| 294 | .WillRepeatedly(Return(true)); |
| 295 | } |
| 296 | } |
| 297 | |
| 298 | void SendAckPacket(uint64_t packet_number, uint64_t largest_acked) { |
| 299 | EXPECT_CALL( |
| 300 | *send_algorithm_, |
| 301 | OnPacketSent(_, BytesInFlight(), QuicPacketNumber(packet_number), |
| 302 | kDefaultLength, NO_RETRANSMITTABLE_DATA)); |
| 303 | SerializedPacket packet(CreatePacket(packet_number, false)); |
| 304 | packet.largest_acked = QuicPacketNumber(largest_acked); |
| 305 | manager_.OnPacketSent(&packet, QuicPacketNumber(), clock_.Now(), |
| 306 | NOT_RETRANSMISSION, NO_RETRANSMITTABLE_DATA); |
| 307 | } |
| 308 | |
| 309 | // Based on QuicConnection's WritePendingRetransmissions. |
| 310 | void RetransmitNextPacket(uint64_t retransmission_packet_number) { |
| 311 | EXPECT_TRUE(manager_.HasPendingRetransmissions()); |
| 312 | EXPECT_CALL( |
| 313 | *send_algorithm_, |
| 314 | OnPacketSent(_, _, QuicPacketNumber(retransmission_packet_number), |
| 315 | kDefaultLength, HAS_RETRANSMITTABLE_DATA)); |
| 316 | const QuicPendingRetransmission pending = |
| 317 | manager_.NextPendingRetransmission(); |
| 318 | SerializedPacket packet(CreatePacket(retransmission_packet_number, false)); |
| 319 | manager_.OnPacketSent(&packet, pending.packet_number, clock_.Now(), |
| 320 | pending.transmission_type, HAS_RETRANSMITTABLE_DATA); |
| 321 | } |
| 322 | |
| 323 | QuicSentPacketManager manager_; |
| 324 | MockClock clock_; |
| 325 | QuicConnectionStats stats_; |
| 326 | MockSendAlgorithm* send_algorithm_; |
| 327 | std::unique_ptr<MockNetworkChangeVisitor> network_change_visitor_; |
| 328 | StrictMock<MockSessionNotifier> notifier_; |
| 329 | }; |
| 330 | |
| 331 | INSTANTIATE_TEST_SUITE_P(Tests, QuicSentPacketManagerTest, testing::Bool()); |
| 332 | |
| 333 | TEST_P(QuicSentPacketManagerTest, IsUnacked) { |
| 334 | VerifyUnackedPackets(nullptr, 0); |
| 335 | SendDataPacket(1); |
| 336 | |
| 337 | uint64_t unacked[] = {1}; |
| 338 | VerifyUnackedPackets(unacked, QUIC_ARRAYSIZE(unacked)); |
| 339 | uint64_t retransmittable[] = {1}; |
| 340 | VerifyRetransmittablePackets(retransmittable, |
| 341 | QUIC_ARRAYSIZE(retransmittable)); |
| 342 | } |
| 343 | |
| 344 | TEST_P(QuicSentPacketManagerTest, IsUnAckedRetransmit) { |
| 345 | SendDataPacket(1); |
| 346 | RetransmitAndSendPacket(1, 2); |
| 347 | |
| 348 | EXPECT_TRUE(QuicSentPacketManagerPeer::IsRetransmission(&manager_, 2)); |
| 349 | uint64_t unacked[] = {1, 2}; |
| 350 | VerifyUnackedPackets(unacked, QUIC_ARRAYSIZE(unacked)); |
| 351 | std::vector<uint64_t> retransmittable; |
| 352 | if (manager_.session_decides_what_to_write()) { |
| 353 | retransmittable = {1, 2}; |
| 354 | } else { |
| 355 | retransmittable = {2}; |
| 356 | } |
| 357 | VerifyRetransmittablePackets(&retransmittable[0], retransmittable.size()); |
| 358 | } |
| 359 | |
| 360 | TEST_P(QuicSentPacketManagerTest, RetransmitThenAck) { |
| 361 | SendDataPacket(1); |
| 362 | RetransmitAndSendPacket(1, 2); |
| 363 | |
| 364 | // Ack 2 but not 1. |
| 365 | ExpectAck(2); |
| 366 | manager_.OnAckFrameStart(QuicPacketNumber(2), QuicTime::Delta::Infinite(), |
| 367 | clock_.Now()); |
| 368 | manager_.OnAckRange(QuicPacketNumber(2), QuicPacketNumber(3)); |
| 369 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 370 | if (manager_.session_decides_what_to_write()) { |
| 371 | EXPECT_CALL(notifier_, IsFrameOutstanding(_)).WillRepeatedly(Return(false)); |
| 372 | } |
| 373 | // Packet 1 is unacked, pending, but not retransmittable. |
| 374 | uint64_t unacked[] = {1}; |
| 375 | VerifyUnackedPackets(unacked, QUIC_ARRAYSIZE(unacked)); |
| 376 | EXPECT_TRUE(QuicSentPacketManagerPeer::HasPendingPackets(&manager_)); |
| 377 | VerifyRetransmittablePackets(nullptr, 0); |
| 378 | } |
| 379 | |
| 380 | TEST_P(QuicSentPacketManagerTest, RetransmitThenAckBeforeSend) { |
| 381 | SendDataPacket(1); |
| 382 | if (manager_.session_decides_what_to_write()) { |
| 383 | if (manager_.session_decides_what_to_write()) { |
| 384 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 385 | .WillOnce(WithArgs<1>(Invoke([this](TransmissionType type) { |
| 386 | RetransmitDataPacket(2, type); |
| 387 | }))); |
| 388 | } |
| 389 | } |
| 390 | QuicSentPacketManagerPeer::MarkForRetransmission(&manager_, 1, |
| 391 | TLP_RETRANSMISSION); |
| 392 | if (!manager_.session_decides_what_to_write()) { |
| 393 | EXPECT_TRUE(manager_.HasPendingRetransmissions()); |
| 394 | } |
| 395 | // Ack 1. |
| 396 | ExpectAck(1); |
| 397 | manager_.OnAckFrameStart(QuicPacketNumber(1), QuicTime::Delta::Infinite(), |
| 398 | clock_.Now()); |
| 399 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 400 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 401 | |
| 402 | // There should no longer be a pending retransmission. |
| 403 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 404 | |
| 405 | if (manager_.session_decides_what_to_write()) { |
| 406 | EXPECT_CALL(notifier_, IsFrameOutstanding(_)).WillRepeatedly(Return(false)); |
| 407 | uint64_t unacked[] = {2}; |
| 408 | VerifyUnackedPackets(unacked, QUIC_ARRAYSIZE(unacked)); |
| 409 | // We do not know packet 2 is a spurious retransmission until it gets acked. |
| 410 | } else { |
| 411 | // No unacked packets remain. |
| 412 | VerifyUnackedPackets(nullptr, 0); |
| 413 | } |
| 414 | VerifyRetransmittablePackets(nullptr, 0); |
| 415 | EXPECT_EQ(0u, stats_.packets_spuriously_retransmitted); |
| 416 | } |
| 417 | |
| 418 | TEST_P(QuicSentPacketManagerTest, RetransmitThenStopRetransmittingBeforeSend) { |
| 419 | SendDataPacket(1); |
| 420 | if (manager_.session_decides_what_to_write()) { |
| 421 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)); |
| 422 | } |
| 423 | QuicSentPacketManagerPeer::MarkForRetransmission(&manager_, 1, |
| 424 | TLP_RETRANSMISSION); |
| 425 | if (!manager_.session_decides_what_to_write()) { |
| 426 | EXPECT_TRUE(manager_.HasPendingRetransmissions()); |
| 427 | } |
| 428 | |
| 429 | manager_.CancelRetransmissionsForStream(kStreamId); |
| 430 | if (manager_.session_decides_what_to_write()) { |
| 431 | EXPECT_CALL(notifier_, IsFrameOutstanding(_)).WillRepeatedly(Return(false)); |
| 432 | } |
| 433 | |
| 434 | // There should no longer be a pending retransmission. |
| 435 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 436 | |
| 437 | uint64_t unacked[] = {1}; |
| 438 | VerifyUnackedPackets(unacked, QUIC_ARRAYSIZE(unacked)); |
| 439 | VerifyRetransmittablePackets(nullptr, 0); |
| 440 | EXPECT_EQ(0u, stats_.packets_spuriously_retransmitted); |
| 441 | } |
| 442 | |
| 443 | TEST_P(QuicSentPacketManagerTest, RetransmitThenAckPrevious) { |
| 444 | SendDataPacket(1); |
| 445 | RetransmitAndSendPacket(1, 2); |
| 446 | QuicTime::Delta rtt = QuicTime::Delta::FromMilliseconds(15); |
| 447 | clock_.AdvanceTime(rtt); |
| 448 | |
| 449 | // Ack 1 but not 2. |
| 450 | ExpectAck(1); |
| 451 | manager_.OnAckFrameStart(QuicPacketNumber(1), QuicTime::Delta::Infinite(), |
| 452 | clock_.Now()); |
| 453 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 454 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 455 | if (manager_.session_decides_what_to_write()) { |
| 456 | EXPECT_CALL(notifier_, IsFrameOutstanding(_)).WillRepeatedly(Return(false)); |
| 457 | } |
| 458 | // 2 remains unacked, but no packets have retransmittable data. |
| 459 | uint64_t unacked[] = {2}; |
| 460 | VerifyUnackedPackets(unacked, QUIC_ARRAYSIZE(unacked)); |
| 461 | EXPECT_TRUE(QuicSentPacketManagerPeer::HasPendingPackets(&manager_)); |
| 462 | VerifyRetransmittablePackets(nullptr, 0); |
| 463 | if (manager_.session_decides_what_to_write()) { |
| 464 | // Ack 2 causes 2 be considered as spurious retransmission. |
| 465 | EXPECT_CALL(notifier_, OnFrameAcked(_, _)).WillOnce(Return(false)); |
| 466 | ExpectAck(2); |
| 467 | manager_.OnAckFrameStart(QuicPacketNumber(2), QuicTime::Delta::Infinite(), |
| 468 | clock_.Now()); |
| 469 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(3)); |
| 470 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 471 | } |
| 472 | |
| 473 | EXPECT_EQ(1u, stats_.packets_spuriously_retransmitted); |
| 474 | } |
| 475 | |
| 476 | TEST_P(QuicSentPacketManagerTest, RetransmitThenAckPreviousThenNackRetransmit) { |
| 477 | SendDataPacket(1); |
| 478 | RetransmitAndSendPacket(1, 2); |
| 479 | QuicTime::Delta rtt = QuicTime::Delta::FromMilliseconds(15); |
| 480 | clock_.AdvanceTime(rtt); |
| 481 | |
| 482 | // First, ACK packet 1 which makes packet 2 non-retransmittable. |
| 483 | ExpectAck(1); |
| 484 | manager_.OnAckFrameStart(QuicPacketNumber(1), QuicTime::Delta::Infinite(), |
| 485 | clock_.Now()); |
| 486 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 487 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 488 | |
| 489 | SendDataPacket(3); |
| 490 | SendDataPacket(4); |
| 491 | SendDataPacket(5); |
| 492 | clock_.AdvanceTime(rtt); |
| 493 | |
| 494 | // Next, NACK packet 2 three times. |
| 495 | ExpectAck(3); |
| 496 | manager_.OnAckFrameStart(QuicPacketNumber(3), QuicTime::Delta::Infinite(), |
| 497 | clock_.Now()); |
| 498 | manager_.OnAckRange(QuicPacketNumber(3), QuicPacketNumber(4)); |
| 499 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 500 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 501 | |
| 502 | ExpectAck(4); |
| 503 | manager_.OnAckFrameStart(QuicPacketNumber(4), QuicTime::Delta::Infinite(), |
| 504 | clock_.Now()); |
| 505 | manager_.OnAckRange(QuicPacketNumber(3), QuicPacketNumber(5)); |
| 506 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 507 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 508 | |
| 509 | ExpectAckAndLoss(true, 5, 2); |
| 510 | if (manager_.session_decides_what_to_write()) { |
| 511 | // Frames in all packets are acked. |
| 512 | EXPECT_CALL(notifier_, IsFrameOutstanding(_)).WillRepeatedly(Return(false)); |
| 513 | // Notify session that stream frame in packet 2 gets lost although it is |
| 514 | // not outstanding. |
| 515 | EXPECT_CALL(notifier_, OnFrameLost(_)).Times(1); |
| 516 | } |
| 517 | manager_.OnAckFrameStart(QuicPacketNumber(5), QuicTime::Delta::Infinite(), |
| 518 | clock_.Now()); |
| 519 | manager_.OnAckRange(QuicPacketNumber(3), QuicPacketNumber(6)); |
| 520 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 521 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 522 | |
| 523 | if (manager_.session_decides_what_to_write()) { |
| 524 | uint64_t unacked[] = {2}; |
| 525 | VerifyUnackedPackets(unacked, QUIC_ARRAYSIZE(unacked)); |
| 526 | } else { |
| 527 | // No packets remain unacked. |
| 528 | VerifyUnackedPackets(nullptr, 0); |
| 529 | } |
| 530 | EXPECT_FALSE(QuicSentPacketManagerPeer::HasPendingPackets(&manager_)); |
| 531 | VerifyRetransmittablePackets(nullptr, 0); |
| 532 | |
| 533 | // Verify that the retransmission alarm would not fire, |
| 534 | // since there is no retransmittable data outstanding. |
| 535 | EXPECT_EQ(QuicTime::Zero(), manager_.GetRetransmissionTime()); |
| 536 | } |
| 537 | |
| 538 | TEST_P(QuicSentPacketManagerTest, |
| 539 | DISABLED_RetransmitTwiceThenAckPreviousBeforeSend) { |
| 540 | SendDataPacket(1); |
| 541 | RetransmitAndSendPacket(1, 2); |
| 542 | |
| 543 | // Fire the RTO, which will mark 2 for retransmission (but will not send it). |
| 544 | EXPECT_CALL(*send_algorithm_, OnRetransmissionTimeout(true)); |
| 545 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 546 | manager_.OnRetransmissionTimeout(); |
| 547 | EXPECT_TRUE(manager_.HasPendingRetransmissions()); |
| 548 | |
| 549 | // Ack 1 but not 2, before 2 is able to be sent. |
| 550 | // Since 1 has been retransmitted, it has already been lost, and so the |
| 551 | // send algorithm is not informed that it has been ACK'd. |
| 552 | ExpectUpdatedRtt(1); |
| 553 | EXPECT_CALL(*send_algorithm_, RevertRetransmissionTimeout()); |
| 554 | manager_.OnAckFrameStart(QuicPacketNumber(1), QuicTime::Delta::Infinite(), |
| 555 | clock_.Now()); |
| 556 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 557 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 558 | |
| 559 | // Since 2 was marked for retransmit, when 1 is acked, 2 is kept for RTT. |
| 560 | uint64_t unacked[] = {2}; |
| 561 | VerifyUnackedPackets(unacked, QUIC_ARRAYSIZE(unacked)); |
| 562 | EXPECT_FALSE(QuicSentPacketManagerPeer::HasPendingPackets(&manager_)); |
| 563 | VerifyRetransmittablePackets(nullptr, 0); |
| 564 | |
| 565 | // Verify that the retransmission alarm would not fire, |
| 566 | // since there is no retransmittable data outstanding. |
| 567 | EXPECT_EQ(QuicTime::Zero(), manager_.GetRetransmissionTime()); |
| 568 | } |
| 569 | |
| 570 | TEST_P(QuicSentPacketManagerTest, RetransmitTwiceThenAckFirst) { |
| 571 | StrictMock<MockDebugDelegate> debug_delegate; |
| 572 | if (manager_.session_decides_what_to_write()) { |
| 573 | EXPECT_CALL(debug_delegate, OnSpuriousPacketRetransmission( |
| 574 | TLP_RETRANSMISSION, kDefaultLength)) |
| 575 | .Times(1); |
| 576 | } else { |
| 577 | EXPECT_CALL(debug_delegate, OnSpuriousPacketRetransmission( |
| 578 | TLP_RETRANSMISSION, kDefaultLength)) |
| 579 | .Times(2); |
| 580 | } |
| 581 | manager_.SetDebugDelegate(&debug_delegate); |
| 582 | |
| 583 | SendDataPacket(1); |
| 584 | RetransmitAndSendPacket(1, 2); |
| 585 | RetransmitAndSendPacket(2, 3); |
| 586 | QuicTime::Delta rtt = QuicTime::Delta::FromMilliseconds(15); |
| 587 | clock_.AdvanceTime(rtt); |
| 588 | |
| 589 | // Ack 1 but not 2 or 3. |
| 590 | ExpectAck(1); |
| 591 | manager_.OnAckFrameStart(QuicPacketNumber(1), QuicTime::Delta::Infinite(), |
| 592 | clock_.Now()); |
| 593 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 594 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 595 | if (manager_.session_decides_what_to_write()) { |
| 596 | // Frames in packets 2 and 3 are acked. |
| 597 | EXPECT_CALL(notifier_, IsFrameOutstanding(_)) |
| 598 | .Times(2) |
| 599 | .WillRepeatedly(Return(false)); |
| 600 | } |
| 601 | |
| 602 | // 2 and 3 remain unacked, but no packets have retransmittable data. |
| 603 | uint64_t unacked[] = {2, 3}; |
| 604 | VerifyUnackedPackets(unacked, QUIC_ARRAYSIZE(unacked)); |
| 605 | EXPECT_TRUE(QuicSentPacketManagerPeer::HasPendingPackets(&manager_)); |
| 606 | VerifyRetransmittablePackets(nullptr, 0); |
| 607 | |
| 608 | // Ensure packet 2 is lost when 4 is sent and 3 and 4 are acked. |
| 609 | SendDataPacket(4); |
| 610 | if (manager_.session_decides_what_to_write()) { |
| 611 | // No new data gets acked in packet 3. |
| 612 | EXPECT_CALL(notifier_, OnFrameAcked(_, _)) |
| 613 | .WillOnce(Return(false)) |
| 614 | .WillRepeatedly(Return(true)); |
| 615 | } |
| 616 | uint64_t acked[] = {3, 4}; |
| 617 | ExpectAcksAndLosses(true, acked, QUIC_ARRAYSIZE(acked), nullptr, 0); |
| 618 | manager_.OnAckFrameStart(QuicPacketNumber(4), QuicTime::Delta::Infinite(), |
| 619 | clock_.Now()); |
| 620 | manager_.OnAckRange(QuicPacketNumber(3), QuicPacketNumber(5)); |
| 621 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 622 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 623 | |
| 624 | uint64_t unacked2[] = {2}; |
| 625 | VerifyUnackedPackets(unacked2, QUIC_ARRAYSIZE(unacked2)); |
| 626 | EXPECT_TRUE(QuicSentPacketManagerPeer::HasPendingPackets(&manager_)); |
| 627 | |
| 628 | SendDataPacket(5); |
| 629 | ExpectAckAndLoss(true, 5, 2); |
| 630 | EXPECT_CALL(debug_delegate, |
| 631 | OnPacketLoss(QuicPacketNumber(2), LOSS_RETRANSMISSION, _)); |
| 632 | if (manager_.session_decides_what_to_write()) { |
| 633 | // Frames in all packets are acked. |
| 634 | EXPECT_CALL(notifier_, IsFrameOutstanding(_)).WillRepeatedly(Return(false)); |
| 635 | // Notify session that stream frame in packet 2 gets lost although it is |
| 636 | // not outstanding. |
| 637 | EXPECT_CALL(notifier_, OnFrameLost(_)).Times(1); |
| 638 | } |
| 639 | manager_.OnAckFrameStart(QuicPacketNumber(5), QuicTime::Delta::Infinite(), |
| 640 | clock_.Now()); |
| 641 | manager_.OnAckRange(QuicPacketNumber(3), QuicPacketNumber(6)); |
| 642 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 643 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 644 | |
| 645 | if (manager_.session_decides_what_to_write()) { |
| 646 | uint64_t unacked[] = {2}; |
| 647 | VerifyUnackedPackets(unacked, QUIC_ARRAYSIZE(unacked)); |
| 648 | } else { |
| 649 | VerifyUnackedPackets(nullptr, 0); |
| 650 | } |
| 651 | EXPECT_FALSE(QuicSentPacketManagerPeer::HasPendingPackets(&manager_)); |
| 652 | if (manager_.session_decides_what_to_write()) { |
| 653 | // Spurious retransmission is detected when packet 3 gets acked. We cannot |
| 654 | // know packet 2 is a spurious until it gets acked. |
| 655 | EXPECT_EQ(1u, stats_.packets_spuriously_retransmitted); |
| 656 | } else { |
| 657 | EXPECT_EQ(2u, stats_.packets_spuriously_retransmitted); |
| 658 | } |
| 659 | } |
| 660 | |
| 661 | TEST_P(QuicSentPacketManagerTest, AckOriginalTransmission) { |
| 662 | auto loss_algorithm = QuicMakeUnique<MockLossAlgorithm>(); |
| 663 | QuicSentPacketManagerPeer::SetLossAlgorithm(&manager_, loss_algorithm.get()); |
| 664 | |
| 665 | SendDataPacket(1); |
| 666 | RetransmitAndSendPacket(1, 2); |
| 667 | |
| 668 | // Ack original transmission, but that wasn't lost via fast retransmit, |
| 669 | // so no call on OnSpuriousRetransmission is expected. |
| 670 | { |
| 671 | ExpectAck(1); |
| 672 | EXPECT_CALL(*loss_algorithm, DetectLosses(_, _, _, _, _, _)); |
| 673 | manager_.OnAckFrameStart(QuicPacketNumber(1), QuicTime::Delta::Infinite(), |
| 674 | clock_.Now()); |
| 675 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 676 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 677 | } |
| 678 | |
| 679 | SendDataPacket(3); |
| 680 | SendDataPacket(4); |
| 681 | // Ack 4, which causes 3 to be retransmitted. |
| 682 | { |
| 683 | ExpectAck(4); |
| 684 | EXPECT_CALL(*loss_algorithm, DetectLosses(_, _, _, _, _, _)); |
| 685 | manager_.OnAckFrameStart(QuicPacketNumber(4), QuicTime::Delta::Infinite(), |
| 686 | clock_.Now()); |
| 687 | manager_.OnAckRange(QuicPacketNumber(4), QuicPacketNumber(5)); |
| 688 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 689 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 690 | RetransmitAndSendPacket(3, 5, LOSS_RETRANSMISSION); |
| 691 | } |
| 692 | |
| 693 | // Ack 3, which causes SpuriousRetransmitDetected to be called. |
| 694 | { |
| 695 | uint64_t acked[] = {3}; |
| 696 | ExpectAcksAndLosses(false, acked, QUIC_ARRAYSIZE(acked), nullptr, 0); |
| 697 | EXPECT_CALL(*loss_algorithm, DetectLosses(_, _, _, _, _, _)); |
| 698 | EXPECT_CALL(*loss_algorithm, |
| 699 | SpuriousRetransmitDetected(_, _, _, QuicPacketNumber(5))); |
| 700 | manager_.OnAckFrameStart(QuicPacketNumber(4), QuicTime::Delta::Infinite(), |
| 701 | clock_.Now()); |
| 702 | manager_.OnAckRange(QuicPacketNumber(3), QuicPacketNumber(5)); |
| 703 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 704 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 705 | if (manager_.session_decides_what_to_write()) { |
| 706 | // Ack 3 will not cause 5 be considered as a spurious retransmission. Ack |
| 707 | // 5 will cause 5 be considered as a spurious retransmission as no new |
| 708 | // data gets acked. |
| 709 | ExpectAck(5); |
| 710 | EXPECT_CALL(*loss_algorithm, DetectLosses(_, _, _, _, _, _)); |
| 711 | EXPECT_CALL(notifier_, OnFrameAcked(_, _)).WillOnce(Return(false)); |
| 712 | manager_.OnAckFrameStart(QuicPacketNumber(5), QuicTime::Delta::Infinite(), |
| 713 | clock_.Now()); |
| 714 | manager_.OnAckRange(QuicPacketNumber(3), QuicPacketNumber(6)); |
| 715 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 716 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 717 | } |
| 718 | } |
| 719 | } |
| 720 | |
| 721 | TEST_P(QuicSentPacketManagerTest, GetLeastUnacked) { |
| 722 | EXPECT_EQ(QuicPacketNumber(1u), manager_.GetLeastUnacked()); |
| 723 | } |
| 724 | |
| 725 | TEST_P(QuicSentPacketManagerTest, GetLeastUnackedUnacked) { |
| 726 | SendDataPacket(1); |
| 727 | EXPECT_EQ(QuicPacketNumber(1u), manager_.GetLeastUnacked()); |
| 728 | } |
| 729 | |
| 730 | TEST_P(QuicSentPacketManagerTest, AckAckAndUpdateRtt) { |
| 731 | EXPECT_FALSE(manager_.largest_packet_peer_knows_is_acked().IsInitialized()); |
| 732 | SendDataPacket(1); |
| 733 | SendAckPacket(2, 1); |
| 734 | |
| 735 | // Now ack the ack and expect an RTT update. |
| 736 | uint64_t acked[] = {1, 2}; |
| 737 | ExpectAcksAndLosses(true, acked, QUIC_ARRAYSIZE(acked), nullptr, 0); |
| 738 | manager_.OnAckFrameStart(QuicPacketNumber(2), |
| 739 | QuicTime::Delta::FromMilliseconds(5), clock_.Now()); |
| 740 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(3)); |
| 741 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 742 | EXPECT_EQ(QuicPacketNumber(1), manager_.largest_packet_peer_knows_is_acked()); |
| 743 | |
| 744 | SendAckPacket(3, 3); |
| 745 | |
| 746 | // Now ack the ack and expect only an RTT update. |
| 747 | uint64_t acked2[] = {3}; |
| 748 | ExpectAcksAndLosses(true, acked2, QUIC_ARRAYSIZE(acked2), nullptr, 0); |
| 749 | manager_.OnAckFrameStart(QuicPacketNumber(3), QuicTime::Delta::Infinite(), |
| 750 | clock_.Now()); |
| 751 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(4)); |
| 752 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 753 | EXPECT_EQ(QuicPacketNumber(3u), |
| 754 | manager_.largest_packet_peer_knows_is_acked()); |
| 755 | } |
| 756 | |
| 757 | TEST_P(QuicSentPacketManagerTest, Rtt) { |
| 758 | QuicTime::Delta expected_rtt = QuicTime::Delta::FromMilliseconds(20); |
| 759 | SendDataPacket(1); |
| 760 | clock_.AdvanceTime(expected_rtt); |
| 761 | |
| 762 | ExpectAck(1); |
| 763 | manager_.OnAckFrameStart(QuicPacketNumber(1), QuicTime::Delta::Infinite(), |
| 764 | clock_.Now()); |
| 765 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 766 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 767 | EXPECT_EQ(expected_rtt, manager_.GetRttStats()->latest_rtt()); |
| 768 | } |
| 769 | |
| 770 | TEST_P(QuicSentPacketManagerTest, RttWithInvalidDelta) { |
| 771 | // Expect that the RTT is equal to the local time elapsed, since the |
| 772 | // ack_delay_time is larger than the local time elapsed |
| 773 | // and is hence invalid. |
| 774 | QuicTime::Delta expected_rtt = QuicTime::Delta::FromMilliseconds(10); |
| 775 | SendDataPacket(1); |
| 776 | clock_.AdvanceTime(expected_rtt); |
| 777 | |
| 778 | ExpectAck(1); |
| 779 | manager_.OnAckFrameStart(QuicPacketNumber(1), |
| 780 | QuicTime::Delta::FromMilliseconds(11), clock_.Now()); |
| 781 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 782 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 783 | EXPECT_EQ(expected_rtt, manager_.GetRttStats()->latest_rtt()); |
| 784 | } |
| 785 | |
| 786 | TEST_P(QuicSentPacketManagerTest, RttWithInfiniteDelta) { |
| 787 | // Expect that the RTT is equal to the local time elapsed, since the |
| 788 | // ack_delay_time is infinite, and is hence invalid. |
| 789 | QuicTime::Delta expected_rtt = QuicTime::Delta::FromMilliseconds(10); |
| 790 | SendDataPacket(1); |
| 791 | clock_.AdvanceTime(expected_rtt); |
| 792 | |
| 793 | ExpectAck(1); |
| 794 | manager_.OnAckFrameStart(QuicPacketNumber(1), QuicTime::Delta::Infinite(), |
| 795 | clock_.Now()); |
| 796 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 797 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 798 | EXPECT_EQ(expected_rtt, manager_.GetRttStats()->latest_rtt()); |
| 799 | } |
| 800 | |
| 801 | TEST_P(QuicSentPacketManagerTest, RttZeroDelta) { |
| 802 | // Expect that the RTT is the time between send and receive since the |
| 803 | // ack_delay_time is zero. |
| 804 | QuicTime::Delta expected_rtt = QuicTime::Delta::FromMilliseconds(10); |
| 805 | SendDataPacket(1); |
| 806 | clock_.AdvanceTime(expected_rtt); |
| 807 | |
| 808 | ExpectAck(1); |
| 809 | manager_.OnAckFrameStart(QuicPacketNumber(1), QuicTime::Delta::Zero(), |
| 810 | clock_.Now()); |
| 811 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 812 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 813 | EXPECT_EQ(expected_rtt, manager_.GetRttStats()->latest_rtt()); |
| 814 | } |
| 815 | |
| 816 | TEST_P(QuicSentPacketManagerTest, TailLossProbeTimeout) { |
| 817 | QuicSentPacketManagerPeer::SetMaxTailLossProbes(&manager_, 2); |
| 818 | |
| 819 | // Send 1 packet. |
| 820 | SendDataPacket(1); |
| 821 | |
| 822 | // The first tail loss probe retransmits 1 packet. |
| 823 | manager_.OnRetransmissionTimeout(); |
| 824 | EXPECT_EQ(QuicTime::Delta::Zero(), manager_.TimeUntilSend(clock_.Now())); |
| 825 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 826 | if (manager_.session_decides_what_to_write()) { |
| 827 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 828 | .WillOnce(WithArgs<1>(Invoke( |
| 829 | [this](TransmissionType type) { RetransmitDataPacket(2, type); }))); |
| 830 | } |
| 831 | manager_.MaybeRetransmitTailLossProbe(); |
| 832 | if (!manager_.session_decides_what_to_write()) { |
| 833 | EXPECT_TRUE(manager_.HasPendingRetransmissions()); |
| 834 | RetransmitNextPacket(2); |
| 835 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 836 | } |
| 837 | |
| 838 | // The second tail loss probe retransmits 1 packet. |
| 839 | manager_.OnRetransmissionTimeout(); |
| 840 | EXPECT_EQ(QuicTime::Delta::Zero(), manager_.TimeUntilSend(clock_.Now())); |
| 841 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 842 | if (manager_.session_decides_what_to_write()) { |
| 843 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 844 | .WillOnce(WithArgs<1>(Invoke( |
| 845 | [this](TransmissionType type) { RetransmitDataPacket(3, type); }))); |
| 846 | } |
| 847 | manager_.MaybeRetransmitTailLossProbe(); |
| 848 | if (!manager_.session_decides_what_to_write()) { |
| 849 | EXPECT_TRUE(manager_.HasPendingRetransmissions()); |
| 850 | RetransmitNextPacket(3); |
| 851 | } |
| 852 | EXPECT_CALL(*send_algorithm_, CanSend(_)).WillOnce(Return(false)); |
| 853 | EXPECT_EQ(QuicTime::Delta::Infinite(), manager_.TimeUntilSend(clock_.Now())); |
| 854 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 855 | |
| 856 | // Ack the third and ensure the first two are still pending. |
| 857 | ExpectAck(3); |
| 858 | |
| 859 | manager_.OnAckFrameStart(QuicPacketNumber(3), QuicTime::Delta::Infinite(), |
| 860 | clock_.Now()); |
| 861 | manager_.OnAckRange(QuicPacketNumber(3), QuicPacketNumber(4)); |
| 862 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 863 | |
| 864 | EXPECT_TRUE(QuicSentPacketManagerPeer::HasPendingPackets(&manager_)); |
| 865 | |
| 866 | // Acking two more packets will lose both of them due to nacks. |
| 867 | SendDataPacket(4); |
| 868 | SendDataPacket(5); |
| 869 | uint64_t acked[] = {4, 5}; |
| 870 | uint64_t lost[] = {1, 2}; |
| 871 | ExpectAcksAndLosses(true, acked, QUIC_ARRAYSIZE(acked), lost, |
| 872 | QUIC_ARRAYSIZE(lost)); |
| 873 | if (manager_.session_decides_what_to_write()) { |
| 874 | // Frames in all packets are acked. |
| 875 | EXPECT_CALL(notifier_, IsFrameOutstanding(_)).WillRepeatedly(Return(false)); |
| 876 | // Notify session that stream frame in packets 1 and 2 get lost although |
| 877 | // they are not outstanding. |
| 878 | EXPECT_CALL(notifier_, OnFrameLost(_)).Times(2); |
| 879 | } |
| 880 | manager_.OnAckFrameStart(QuicPacketNumber(5), QuicTime::Delta::Infinite(), |
| 881 | clock_.Now()); |
| 882 | manager_.OnAckRange(QuicPacketNumber(3), QuicPacketNumber(6)); |
| 883 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 884 | |
| 885 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 886 | EXPECT_FALSE(QuicSentPacketManagerPeer::HasPendingPackets(&manager_)); |
| 887 | EXPECT_EQ(2u, stats_.tlp_count); |
| 888 | EXPECT_EQ(0u, stats_.rto_count); |
| 889 | } |
| 890 | |
| 891 | TEST_P(QuicSentPacketManagerTest, TailLossProbeThenRTO) { |
| 892 | QuicSentPacketManagerPeer::SetMaxTailLossProbes(&manager_, 2); |
| 893 | |
| 894 | // Send 100 packets. |
| 895 | const size_t kNumSentPackets = 100; |
| 896 | for (size_t i = 1; i <= kNumSentPackets; ++i) { |
| 897 | SendDataPacket(i); |
| 898 | } |
| 899 | QuicTime rto_packet_time = clock_.Now(); |
| 900 | // Advance the time. |
| 901 | clock_.AdvanceTime(manager_.GetRetransmissionTime() - clock_.Now()); |
| 902 | |
| 903 | // The first tail loss probe retransmits 1 packet. |
| 904 | manager_.OnRetransmissionTimeout(); |
| 905 | EXPECT_EQ(QuicTime::Delta::Zero(), manager_.TimeUntilSend(clock_.Now())); |
| 906 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 907 | if (manager_.session_decides_what_to_write()) { |
| 908 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 909 | .WillOnce(WithArgs<1>(Invoke([this](TransmissionType type) { |
| 910 | RetransmitDataPacket(101, type); |
| 911 | }))); |
| 912 | } |
| 913 | manager_.MaybeRetransmitTailLossProbe(); |
| 914 | if (!manager_.session_decides_what_to_write()) { |
| 915 | EXPECT_TRUE(manager_.HasPendingRetransmissions()); |
| 916 | RetransmitNextPacket(101); |
| 917 | } |
| 918 | EXPECT_CALL(*send_algorithm_, CanSend(_)).WillOnce(Return(false)); |
| 919 | EXPECT_EQ(QuicTime::Delta::Infinite(), manager_.TimeUntilSend(clock_.Now())); |
| 920 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 921 | clock_.AdvanceTime(manager_.GetRetransmissionTime() - clock_.Now()); |
| 922 | |
| 923 | // The second tail loss probe retransmits 1 packet. |
| 924 | manager_.OnRetransmissionTimeout(); |
| 925 | EXPECT_EQ(QuicTime::Delta::Zero(), manager_.TimeUntilSend(clock_.Now())); |
| 926 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 927 | if (manager_.session_decides_what_to_write()) { |
| 928 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 929 | .WillOnce(WithArgs<1>(Invoke([this](TransmissionType type) { |
| 930 | RetransmitDataPacket(102, type); |
| 931 | }))); |
| 932 | } |
| 933 | EXPECT_TRUE(manager_.MaybeRetransmitTailLossProbe()); |
| 934 | if (!manager_.session_decides_what_to_write()) { |
| 935 | EXPECT_TRUE(manager_.HasPendingRetransmissions()); |
| 936 | RetransmitNextPacket(102); |
| 937 | } |
| 938 | EXPECT_CALL(*send_algorithm_, CanSend(_)).WillOnce(Return(false)); |
| 939 | EXPECT_EQ(QuicTime::Delta::Infinite(), manager_.TimeUntilSend(clock_.Now())); |
| 940 | |
| 941 | // Ensure the RTO is set based on the correct packet. |
| 942 | rto_packet_time = clock_.Now(); |
| 943 | EXPECT_EQ(rto_packet_time + QuicTime::Delta::FromMilliseconds(500), |
| 944 | manager_.GetRetransmissionTime()); |
| 945 | |
| 946 | // Advance the time enough to ensure all packets are RTO'd. |
| 947 | clock_.AdvanceTime(QuicTime::Delta::FromMilliseconds(1000)); |
| 948 | |
| 949 | if (manager_.session_decides_what_to_write()) { |
| 950 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 951 | .Times(2) |
| 952 | .WillOnce(WithArgs<1>(Invoke([this](TransmissionType type) { |
| 953 | RetransmitDataPacket(103, type); |
| 954 | }))) |
| 955 | .WillOnce(WithArgs<1>(Invoke([this](TransmissionType type) { |
| 956 | RetransmitDataPacket(104, type); |
| 957 | }))); |
| 958 | } |
| 959 | manager_.OnRetransmissionTimeout(); |
| 960 | EXPECT_EQ(2u, stats_.tlp_count); |
| 961 | EXPECT_EQ(1u, stats_.rto_count); |
| 962 | if (manager_.session_decides_what_to_write()) { |
| 963 | // There are 2 RTO retransmissions. |
| 964 | EXPECT_EQ(104 * kDefaultLength, |
| 965 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 966 | } |
| 967 | if (!manager_.session_decides_what_to_write()) { |
| 968 | // Send and Ack the RTO and ensure OnRetransmissionTimeout is called. |
| 969 | EXPECT_EQ(102 * kDefaultLength, |
| 970 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 971 | EXPECT_TRUE(manager_.HasPendingRetransmissions()); |
| 972 | RetransmitNextPacket(103); |
| 973 | } |
| 974 | QuicPacketNumber largest_acked = QuicPacketNumber(103); |
| 975 | EXPECT_CALL(*send_algorithm_, OnRetransmissionTimeout(true)); |
| 976 | EXPECT_CALL(*send_algorithm_, |
| 977 | OnCongestionEvent( |
| 978 | true, _, _, Pointwise(PacketNumberEq(), {largest_acked}), _)); |
| 979 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 980 | if (manager_.session_decides_what_to_write()) { |
| 981 | // Although frames in packet 3 gets acked, it would be kept for another |
| 982 | // RTT. |
| 983 | EXPECT_CALL(notifier_, IsFrameOutstanding(_)).WillRepeatedly(Return(true)); |
| 984 | // Packets [1, 102] are lost, although stream frame in packet 3 is not |
| 985 | // outstanding. |
| 986 | EXPECT_CALL(notifier_, OnFrameLost(_)).Times(102); |
| 987 | } |
| 988 | manager_.OnAckFrameStart(QuicPacketNumber(103), QuicTime::Delta::Infinite(), |
| 989 | clock_.Now()); |
| 990 | manager_.OnAckRange(QuicPacketNumber(103), QuicPacketNumber(104)); |
| 991 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 992 | // All packets before 103 should be lost. |
| 993 | if (manager_.session_decides_what_to_write()) { |
| 994 | // Packet 104 is still in flight. |
| 995 | EXPECT_EQ(1000u, QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 996 | } else { |
| 997 | EXPECT_EQ(0u, QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 998 | } |
| 999 | } |
| 1000 | |
| 1001 | TEST_P(QuicSentPacketManagerTest, CryptoHandshakeTimeout) { |
| 1002 | // Send 2 crypto packets and 3 data packets. |
| 1003 | const size_t kNumSentCryptoPackets = 2; |
| 1004 | for (size_t i = 1; i <= kNumSentCryptoPackets; ++i) { |
| 1005 | SendCryptoPacket(i); |
| 1006 | } |
| 1007 | const size_t kNumSentDataPackets = 3; |
| 1008 | for (size_t i = 1; i <= kNumSentDataPackets; ++i) { |
| 1009 | SendDataPacket(kNumSentCryptoPackets + i); |
| 1010 | } |
| 1011 | EXPECT_TRUE(QuicSentPacketManagerPeer::HasUnackedCryptoPackets(&manager_)); |
| 1012 | |
| 1013 | // The first retransmits 2 packets. |
| 1014 | if (manager_.session_decides_what_to_write()) { |
| 1015 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1016 | .Times(2) |
| 1017 | .WillOnce(InvokeWithoutArgs([this]() { RetransmitCryptoPacket(6); })) |
| 1018 | .WillOnce(InvokeWithoutArgs([this]() { RetransmitCryptoPacket(7); })); |
| 1019 | } |
| 1020 | manager_.OnRetransmissionTimeout(); |
| 1021 | if (!manager_.session_decides_what_to_write()) { |
| 1022 | EXPECT_EQ(QuicTime::Delta::Zero(), manager_.TimeUntilSend(clock_.Now())); |
| 1023 | RetransmitNextPacket(6); |
| 1024 | RetransmitNextPacket(7); |
| 1025 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 1026 | } |
| 1027 | EXPECT_TRUE(QuicSentPacketManagerPeer::HasUnackedCryptoPackets(&manager_)); |
| 1028 | |
| 1029 | // The second retransmits 2 packets. |
| 1030 | if (manager_.session_decides_what_to_write()) { |
| 1031 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1032 | .Times(2) |
| 1033 | .WillOnce(InvokeWithoutArgs([this]() { RetransmitCryptoPacket(8); })) |
| 1034 | .WillOnce(InvokeWithoutArgs([this]() { RetransmitCryptoPacket(9); })); |
| 1035 | } |
| 1036 | manager_.OnRetransmissionTimeout(); |
| 1037 | if (!manager_.session_decides_what_to_write()) { |
| 1038 | EXPECT_EQ(QuicTime::Delta::Zero(), manager_.TimeUntilSend(clock_.Now())); |
| 1039 | RetransmitNextPacket(8); |
| 1040 | RetransmitNextPacket(9); |
| 1041 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 1042 | } |
| 1043 | EXPECT_TRUE(QuicSentPacketManagerPeer::HasUnackedCryptoPackets(&manager_)); |
| 1044 | |
| 1045 | // Now ack the two crypto packets and the speculatively encrypted request, |
| 1046 | // and ensure the first four crypto packets get abandoned, but not lost. |
| 1047 | uint64_t acked[] = {3, 4, 5, 8, 9}; |
| 1048 | ExpectAcksAndLosses(true, acked, QUIC_ARRAYSIZE(acked), nullptr, 0); |
| 1049 | if (manager_.session_decides_what_to_write()) { |
| 1050 | EXPECT_CALL(notifier_, HasUnackedCryptoData()) |
| 1051 | .WillRepeatedly(Return(false)); |
| 1052 | } |
| 1053 | manager_.OnAckFrameStart(QuicPacketNumber(9), QuicTime::Delta::Infinite(), |
| 1054 | clock_.Now()); |
| 1055 | manager_.OnAckRange(QuicPacketNumber(8), QuicPacketNumber(10)); |
| 1056 | manager_.OnAckRange(QuicPacketNumber(3), QuicPacketNumber(6)); |
| 1057 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 1058 | |
| 1059 | EXPECT_FALSE(QuicSentPacketManagerPeer::HasUnackedCryptoPackets(&manager_)); |
| 1060 | } |
| 1061 | |
| 1062 | TEST_P(QuicSentPacketManagerTest, CryptoHandshakeTimeoutVersionNegotiation) { |
| 1063 | // Send 2 crypto packets and 3 data packets. |
| 1064 | const size_t kNumSentCryptoPackets = 2; |
| 1065 | for (size_t i = 1; i <= kNumSentCryptoPackets; ++i) { |
| 1066 | SendCryptoPacket(i); |
| 1067 | } |
| 1068 | const size_t kNumSentDataPackets = 3; |
| 1069 | for (size_t i = 1; i <= kNumSentDataPackets; ++i) { |
| 1070 | SendDataPacket(kNumSentCryptoPackets + i); |
| 1071 | } |
| 1072 | EXPECT_TRUE(QuicSentPacketManagerPeer::HasUnackedCryptoPackets(&manager_)); |
| 1073 | |
| 1074 | if (manager_.session_decides_what_to_write()) { |
| 1075 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1076 | .Times(2) |
| 1077 | .WillOnce(InvokeWithoutArgs([this]() { RetransmitCryptoPacket(6); })) |
| 1078 | .WillOnce(InvokeWithoutArgs([this]() { RetransmitCryptoPacket(7); })); |
| 1079 | } |
| 1080 | manager_.OnRetransmissionTimeout(); |
| 1081 | if (!manager_.session_decides_what_to_write()) { |
| 1082 | RetransmitNextPacket(6); |
| 1083 | RetransmitNextPacket(7); |
| 1084 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 1085 | } |
| 1086 | EXPECT_TRUE(QuicSentPacketManagerPeer::HasUnackedCryptoPackets(&manager_)); |
| 1087 | |
| 1088 | // Now act like a version negotiation packet arrived, which would cause all |
| 1089 | // unacked packets to be retransmitted. |
| 1090 | if (manager_.session_decides_what_to_write()) { |
| 1091 | // Mark packets [1, 7] lost. And the frames in 6 and 7 are same as packets 1 |
| 1092 | // and 2, respectively. |
| 1093 | EXPECT_CALL(notifier_, OnFrameLost(_)).Times(7); |
| 1094 | } |
| 1095 | manager_.RetransmitUnackedPackets(ALL_UNACKED_RETRANSMISSION); |
| 1096 | |
| 1097 | // Ensure the first two pending packets are the crypto retransmits. |
| 1098 | if (manager_.session_decides_what_to_write()) { |
| 1099 | RetransmitCryptoPacket(8); |
| 1100 | RetransmitCryptoPacket(9); |
| 1101 | RetransmitDataPacket(10, ALL_UNACKED_RETRANSMISSION); |
| 1102 | RetransmitDataPacket(11, ALL_UNACKED_RETRANSMISSION); |
| 1103 | RetransmitDataPacket(12, ALL_UNACKED_RETRANSMISSION); |
| 1104 | } else { |
| 1105 | ASSERT_TRUE(manager_.HasPendingRetransmissions()); |
| 1106 | EXPECT_EQ(QuicPacketNumber(6u), |
| 1107 | manager_.NextPendingRetransmission().packet_number); |
| 1108 | RetransmitNextPacket(8); |
| 1109 | EXPECT_EQ(QuicPacketNumber(7u), |
| 1110 | manager_.NextPendingRetransmission().packet_number); |
| 1111 | RetransmitNextPacket(9); |
| 1112 | EXPECT_TRUE(manager_.HasPendingRetransmissions()); |
| 1113 | // Send 3 more data packets and ensure the least unacked is raised. |
| 1114 | RetransmitNextPacket(10); |
| 1115 | RetransmitNextPacket(11); |
| 1116 | RetransmitNextPacket(12); |
| 1117 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 1118 | } |
| 1119 | |
| 1120 | EXPECT_EQ(QuicPacketNumber(1u), manager_.GetLeastUnacked()); |
| 1121 | // Least unacked isn't raised until an ack is received, so ack the |
| 1122 | // crypto packets. |
| 1123 | uint64_t acked[] = {8, 9}; |
| 1124 | ExpectAcksAndLosses(true, acked, QUIC_ARRAYSIZE(acked), nullptr, 0); |
| 1125 | manager_.OnAckFrameStart(QuicPacketNumber(9), QuicTime::Delta::Infinite(), |
| 1126 | clock_.Now()); |
| 1127 | manager_.OnAckRange(QuicPacketNumber(8), QuicPacketNumber(10)); |
| 1128 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 1129 | if (manager_.session_decides_what_to_write()) { |
| 1130 | EXPECT_CALL(notifier_, HasUnackedCryptoData()) |
| 1131 | .WillRepeatedly(Return(false)); |
| 1132 | } |
| 1133 | EXPECT_EQ(QuicPacketNumber(10u), manager_.GetLeastUnacked()); |
| 1134 | } |
| 1135 | |
| 1136 | TEST_P(QuicSentPacketManagerTest, CryptoHandshakeSpuriousRetransmission) { |
| 1137 | // Send 1 crypto packet. |
| 1138 | SendCryptoPacket(1); |
| 1139 | EXPECT_TRUE(QuicSentPacketManagerPeer::HasUnackedCryptoPackets(&manager_)); |
| 1140 | |
| 1141 | // Retransmit the crypto packet as 2. |
| 1142 | if (manager_.session_decides_what_to_write()) { |
| 1143 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1144 | .WillOnce(InvokeWithoutArgs([this]() { RetransmitCryptoPacket(2); })); |
| 1145 | } |
| 1146 | manager_.OnRetransmissionTimeout(); |
| 1147 | if (!manager_.session_decides_what_to_write()) { |
| 1148 | RetransmitNextPacket(2); |
| 1149 | } |
| 1150 | |
| 1151 | // Retransmit the crypto packet as 3. |
| 1152 | if (manager_.session_decides_what_to_write()) { |
| 1153 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1154 | .WillOnce(InvokeWithoutArgs([this]() { RetransmitCryptoPacket(3); })); |
| 1155 | } |
| 1156 | manager_.OnRetransmissionTimeout(); |
| 1157 | if (!manager_.session_decides_what_to_write()) { |
| 1158 | RetransmitNextPacket(3); |
| 1159 | } |
| 1160 | |
| 1161 | // Now ack the second crypto packet, and ensure the first gets removed, but |
| 1162 | // the third does not. |
| 1163 | uint64_t acked[] = {2}; |
| 1164 | ExpectAcksAndLosses(true, acked, QUIC_ARRAYSIZE(acked), nullptr, 0); |
| 1165 | if (manager_.session_decides_what_to_write()) { |
| 1166 | EXPECT_CALL(notifier_, HasUnackedCryptoData()) |
| 1167 | .WillRepeatedly(Return(false)); |
| 1168 | EXPECT_CALL(notifier_, IsFrameOutstanding(_)).WillRepeatedly(Return(false)); |
| 1169 | } |
| 1170 | manager_.OnAckFrameStart(QuicPacketNumber(2), QuicTime::Delta::Infinite(), |
| 1171 | clock_.Now()); |
| 1172 | manager_.OnAckRange(QuicPacketNumber(2), QuicPacketNumber(3)); |
| 1173 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 1174 | |
| 1175 | EXPECT_FALSE(QuicSentPacketManagerPeer::HasUnackedCryptoPackets(&manager_)); |
| 1176 | uint64_t unacked[] = {3}; |
| 1177 | VerifyUnackedPackets(unacked, QUIC_ARRAYSIZE(unacked)); |
| 1178 | } |
| 1179 | |
| 1180 | TEST_P(QuicSentPacketManagerTest, CryptoHandshakeTimeoutUnsentDataPacket) { |
| 1181 | // Send 2 crypto packets and 1 data packet. |
| 1182 | const size_t kNumSentCryptoPackets = 2; |
| 1183 | for (size_t i = 1; i <= kNumSentCryptoPackets; ++i) { |
| 1184 | SendCryptoPacket(i); |
| 1185 | } |
| 1186 | SendDataPacket(3); |
| 1187 | EXPECT_TRUE(QuicSentPacketManagerPeer::HasUnackedCryptoPackets(&manager_)); |
| 1188 | |
| 1189 | // Retransmit 2 crypto packets, but not the serialized packet. |
| 1190 | if (manager_.session_decides_what_to_write()) { |
| 1191 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1192 | .Times(2) |
| 1193 | .WillOnce(InvokeWithoutArgs([this]() { RetransmitCryptoPacket(4); })) |
| 1194 | .WillOnce(InvokeWithoutArgs([this]() { RetransmitCryptoPacket(5); })); |
| 1195 | } |
| 1196 | manager_.OnRetransmissionTimeout(); |
| 1197 | if (!manager_.session_decides_what_to_write()) { |
| 1198 | RetransmitNextPacket(4); |
| 1199 | RetransmitNextPacket(5); |
| 1200 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 1201 | } |
| 1202 | EXPECT_TRUE(QuicSentPacketManagerPeer::HasUnackedCryptoPackets(&manager_)); |
| 1203 | } |
| 1204 | |
| 1205 | TEST_P(QuicSentPacketManagerTest, |
| 1206 | CryptoHandshakeRetransmissionThenRetransmitAll) { |
| 1207 | // Send 1 crypto packet. |
| 1208 | SendCryptoPacket(1); |
| 1209 | |
| 1210 | EXPECT_TRUE(QuicSentPacketManagerPeer::HasUnackedCryptoPackets(&manager_)); |
| 1211 | |
| 1212 | // Retransmit the crypto packet as 2. |
| 1213 | if (manager_.session_decides_what_to_write()) { |
| 1214 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1215 | .WillOnce(InvokeWithoutArgs([this]() { RetransmitCryptoPacket(2); })); |
| 1216 | } |
| 1217 | manager_.OnRetransmissionTimeout(); |
| 1218 | if (!manager_.session_decides_what_to_write()) { |
| 1219 | RetransmitNextPacket(2); |
| 1220 | } |
| 1221 | // Now retransmit all the unacked packets, which occurs when there is a |
| 1222 | // version negotiation. |
| 1223 | if (manager_.session_decides_what_to_write()) { |
| 1224 | EXPECT_CALL(notifier_, OnFrameLost(_)).Times(2); |
| 1225 | } |
| 1226 | manager_.RetransmitUnackedPackets(ALL_UNACKED_RETRANSMISSION); |
| 1227 | if (manager_.session_decides_what_to_write()) { |
| 1228 | // Both packets 1 and 2 are unackable. |
| 1229 | EXPECT_FALSE(QuicSentPacketManagerPeer::IsUnacked(&manager_, 1)); |
| 1230 | EXPECT_FALSE(QuicSentPacketManagerPeer::IsUnacked(&manager_, 2)); |
| 1231 | } else { |
| 1232 | // Packet 2 is useful because it does not get retransmitted and still has |
| 1233 | // retransmittable frames. |
| 1234 | uint64_t unacked[] = {1, 2}; |
| 1235 | VerifyUnackedPackets(unacked, QUIC_ARRAYSIZE(unacked)); |
| 1236 | EXPECT_TRUE(manager_.HasPendingRetransmissions()); |
| 1237 | } |
| 1238 | EXPECT_TRUE(QuicSentPacketManagerPeer::HasUnackedCryptoPackets(&manager_)); |
| 1239 | EXPECT_FALSE(QuicSentPacketManagerPeer::HasPendingPackets(&manager_)); |
| 1240 | } |
| 1241 | |
| 1242 | TEST_P(QuicSentPacketManagerTest, |
| 1243 | CryptoHandshakeRetransmissionThenNeuterAndAck) { |
| 1244 | // Send 1 crypto packet. |
| 1245 | SendCryptoPacket(1); |
| 1246 | |
| 1247 | EXPECT_TRUE(QuicSentPacketManagerPeer::HasUnackedCryptoPackets(&manager_)); |
| 1248 | |
| 1249 | // Retransmit the crypto packet as 2. |
| 1250 | if (manager_.session_decides_what_to_write()) { |
| 1251 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1252 | .WillOnce(InvokeWithoutArgs([this]() { RetransmitCryptoPacket(2); })); |
| 1253 | } |
| 1254 | manager_.OnRetransmissionTimeout(); |
| 1255 | if (!manager_.session_decides_what_to_write()) { |
| 1256 | RetransmitNextPacket(2); |
| 1257 | } |
| 1258 | EXPECT_TRUE(QuicSentPacketManagerPeer::HasUnackedCryptoPackets(&manager_)); |
| 1259 | |
| 1260 | // Retransmit the crypto packet as 3. |
| 1261 | if (manager_.session_decides_what_to_write()) { |
| 1262 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1263 | .WillOnce(InvokeWithoutArgs([this]() { RetransmitCryptoPacket(3); })); |
| 1264 | } |
| 1265 | manager_.OnRetransmissionTimeout(); |
| 1266 | if (!manager_.session_decides_what_to_write()) { |
| 1267 | RetransmitNextPacket(3); |
| 1268 | } |
| 1269 | EXPECT_TRUE(QuicSentPacketManagerPeer::HasUnackedCryptoPackets(&manager_)); |
| 1270 | |
| 1271 | // Now neuter all unacked unencrypted packets, which occurs when the |
| 1272 | // connection goes forward secure. |
| 1273 | manager_.NeuterUnencryptedPackets(); |
| 1274 | if (manager_.session_decides_what_to_write()) { |
| 1275 | EXPECT_CALL(notifier_, HasUnackedCryptoData()) |
| 1276 | .WillRepeatedly(Return(false)); |
| 1277 | EXPECT_CALL(notifier_, IsFrameOutstanding(_)).WillRepeatedly(Return(false)); |
| 1278 | } |
| 1279 | EXPECT_FALSE(QuicSentPacketManagerPeer::HasUnackedCryptoPackets(&manager_)); |
| 1280 | uint64_t unacked[] = {1, 2, 3}; |
| 1281 | VerifyUnackedPackets(unacked, QUIC_ARRAYSIZE(unacked)); |
| 1282 | VerifyRetransmittablePackets(nullptr, 0); |
| 1283 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 1284 | EXPECT_FALSE(QuicSentPacketManagerPeer::HasUnackedCryptoPackets(&manager_)); |
| 1285 | EXPECT_FALSE(QuicSentPacketManagerPeer::HasPendingPackets(&manager_)); |
| 1286 | |
| 1287 | // Ensure both packets get discarded when packet 2 is acked. |
| 1288 | uint64_t acked[] = {3}; |
| 1289 | ExpectAcksAndLosses(true, acked, QUIC_ARRAYSIZE(acked), nullptr, 0); |
| 1290 | manager_.OnAckFrameStart(QuicPacketNumber(3), QuicTime::Delta::Infinite(), |
| 1291 | clock_.Now()); |
| 1292 | manager_.OnAckRange(QuicPacketNumber(3), QuicPacketNumber(4)); |
| 1293 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 1294 | VerifyUnackedPackets(nullptr, 0); |
| 1295 | VerifyRetransmittablePackets(nullptr, 0); |
| 1296 | } |
| 1297 | |
| 1298 | TEST_P(QuicSentPacketManagerTest, RetransmissionTimeout) { |
| 1299 | StrictMock<MockDebugDelegate> debug_delegate; |
| 1300 | manager_.SetDebugDelegate(&debug_delegate); |
| 1301 | |
| 1302 | // Send 100 packets. |
| 1303 | const size_t kNumSentPackets = 100; |
| 1304 | for (size_t i = 1; i <= kNumSentPackets; ++i) { |
| 1305 | SendDataPacket(i); |
| 1306 | } |
| 1307 | |
| 1308 | EXPECT_FALSE(manager_.MaybeRetransmitTailLossProbe()); |
| 1309 | if (manager_.session_decides_what_to_write()) { |
| 1310 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1311 | .Times(2) |
| 1312 | .WillOnce(WithArgs<1>(Invoke([this](TransmissionType type) { |
| 1313 | RetransmitDataPacket(101, type); |
| 1314 | }))) |
| 1315 | .WillOnce(WithArgs<1>(Invoke([this](TransmissionType type) { |
| 1316 | RetransmitDataPacket(102, type); |
| 1317 | }))); |
| 1318 | } |
| 1319 | manager_.OnRetransmissionTimeout(); |
| 1320 | if (manager_.session_decides_what_to_write()) { |
| 1321 | EXPECT_EQ(102 * kDefaultLength, |
| 1322 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 1323 | } else { |
| 1324 | ASSERT_TRUE(manager_.HasPendingRetransmissions()); |
| 1325 | EXPECT_EQ(100 * kDefaultLength, |
| 1326 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 1327 | RetransmitNextPacket(101); |
| 1328 | ASSERT_TRUE(manager_.HasPendingRetransmissions()); |
| 1329 | RetransmitNextPacket(102); |
| 1330 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 1331 | } |
| 1332 | |
| 1333 | // Ack a retransmission. |
| 1334 | // Ensure no packets are lost. |
| 1335 | QuicPacketNumber largest_acked = QuicPacketNumber(102); |
| 1336 | EXPECT_CALL(*send_algorithm_, |
| 1337 | OnCongestionEvent(true, _, _, |
| 1338 | Pointwise(PacketNumberEq(), {largest_acked}), |
| 1339 | /*lost_packets=*/IsEmpty())); |
| 1340 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 1341 | EXPECT_CALL(*send_algorithm_, OnRetransmissionTimeout(true)); |
| 1342 | // RTO's use loss detection instead of immediately declaring retransmitted |
| 1343 | // packets lost. |
| 1344 | for (int i = 1; i <= 99; ++i) { |
| 1345 | EXPECT_CALL(debug_delegate, |
| 1346 | OnPacketLoss(QuicPacketNumber(i), LOSS_RETRANSMISSION, _)); |
| 1347 | } |
| 1348 | if (manager_.session_decides_what_to_write()) { |
| 1349 | EXPECT_CALL(notifier_, IsFrameOutstanding(_)).WillRepeatedly(Return(true)); |
| 1350 | // Packets [1, 99] are considered as lost, although stream frame in packet |
| 1351 | // 2 is not outstanding. |
| 1352 | EXPECT_CALL(notifier_, OnFrameLost(_)).Times(99); |
| 1353 | } |
| 1354 | manager_.OnAckFrameStart(QuicPacketNumber(102), QuicTime::Delta::Zero(), |
| 1355 | clock_.Now()); |
| 1356 | manager_.OnAckRange(QuicPacketNumber(102), QuicPacketNumber(103)); |
| 1357 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 1358 | } |
| 1359 | |
| 1360 | TEST_P(QuicSentPacketManagerTest, RetransmissionTimeoutOnePacket) { |
| 1361 | // Set the 1RTO connection option. |
| 1362 | QuicConfig client_config; |
| 1363 | QuicTagVector options; |
| 1364 | options.push_back(k1RTO); |
| 1365 | QuicSentPacketManagerPeer::SetPerspective(&manager_, Perspective::IS_CLIENT); |
| 1366 | client_config.SetConnectionOptionsToSend(options); |
| 1367 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 1368 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 1369 | EXPECT_CALL(*send_algorithm_, PacingRate(_)) |
| 1370 | .WillRepeatedly(Return(QuicBandwidth::Zero())); |
| 1371 | EXPECT_CALL(*send_algorithm_, GetCongestionWindow()) |
| 1372 | .WillRepeatedly(Return(10 * kDefaultTCPMSS)); |
| 1373 | manager_.SetFromConfig(client_config); |
| 1374 | EXPECT_CALL(*send_algorithm_, CanSend(_)).WillRepeatedly(Return(true)); |
| 1375 | |
| 1376 | StrictMock<MockDebugDelegate> debug_delegate; |
| 1377 | manager_.SetDebugDelegate(&debug_delegate); |
| 1378 | |
| 1379 | // Send 100 packets. |
| 1380 | const size_t kNumSentPackets = 100; |
| 1381 | for (size_t i = 1; i <= kNumSentPackets; ++i) { |
| 1382 | SendDataPacket(i); |
| 1383 | } |
| 1384 | |
| 1385 | EXPECT_FALSE(manager_.MaybeRetransmitTailLossProbe()); |
| 1386 | if (manager_.session_decides_what_to_write()) { |
| 1387 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1388 | .Times(1) |
| 1389 | .WillOnce(WithArgs<1>(Invoke([this](TransmissionType type) { |
| 1390 | RetransmitDataPacket(101, type); |
| 1391 | }))); |
| 1392 | } |
| 1393 | manager_.OnRetransmissionTimeout(); |
| 1394 | if (manager_.session_decides_what_to_write()) { |
| 1395 | EXPECT_EQ(101 * kDefaultLength, |
| 1396 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 1397 | } else { |
| 1398 | ASSERT_TRUE(manager_.HasPendingRetransmissions()); |
| 1399 | EXPECT_EQ(100 * kDefaultLength, |
| 1400 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 1401 | RetransmitNextPacket(101); |
| 1402 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 1403 | } |
| 1404 | } |
| 1405 | |
| 1406 | TEST_P(QuicSentPacketManagerTest, NewRetransmissionTimeout) { |
| 1407 | QuicConfig client_config; |
| 1408 | QuicTagVector options; |
| 1409 | options.push_back(kNRTO); |
| 1410 | QuicSentPacketManagerPeer::SetPerspective(&manager_, Perspective::IS_CLIENT); |
| 1411 | client_config.SetConnectionOptionsToSend(options); |
| 1412 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 1413 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 1414 | EXPECT_CALL(*send_algorithm_, PacingRate(_)) |
| 1415 | .WillRepeatedly(Return(QuicBandwidth::Zero())); |
| 1416 | EXPECT_CALL(*send_algorithm_, GetCongestionWindow()) |
| 1417 | .WillRepeatedly(Return(10 * kDefaultTCPMSS)); |
| 1418 | manager_.SetFromConfig(client_config); |
| 1419 | EXPECT_TRUE(QuicSentPacketManagerPeer::GetUseNewRto(&manager_)); |
| 1420 | EXPECT_CALL(*send_algorithm_, CanSend(_)).WillRepeatedly(Return(true)); |
| 1421 | |
| 1422 | // Send 100 packets. |
| 1423 | const size_t kNumSentPackets = 100; |
| 1424 | for (size_t i = 1; i <= kNumSentPackets; ++i) { |
| 1425 | SendDataPacket(i); |
| 1426 | } |
| 1427 | |
| 1428 | EXPECT_FALSE(manager_.MaybeRetransmitTailLossProbe()); |
| 1429 | if (manager_.session_decides_what_to_write()) { |
| 1430 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1431 | .Times(2) |
| 1432 | .WillOnce(WithArgs<1>(Invoke([this](TransmissionType type) { |
| 1433 | RetransmitDataPacket(101, type); |
| 1434 | }))) |
| 1435 | .WillOnce(WithArgs<1>(Invoke([this](TransmissionType type) { |
| 1436 | RetransmitDataPacket(102, type); |
| 1437 | }))); |
| 1438 | } |
| 1439 | manager_.OnRetransmissionTimeout(); |
| 1440 | if (manager_.session_decides_what_to_write()) { |
| 1441 | EXPECT_EQ(102 * kDefaultLength, |
| 1442 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 1443 | } else { |
| 1444 | EXPECT_TRUE(manager_.HasPendingRetransmissions()); |
| 1445 | EXPECT_EQ(100 * kDefaultLength, |
| 1446 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 1447 | RetransmitNextPacket(101); |
| 1448 | RetransmitNextPacket(102); |
| 1449 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 1450 | } |
| 1451 | |
| 1452 | // Ack a retransmission and expect no call to OnRetransmissionTimeout. |
| 1453 | // This will include packets in the lost packet map. |
| 1454 | QuicPacketNumber largest_acked = QuicPacketNumber(102); |
| 1455 | EXPECT_CALL(*send_algorithm_, |
| 1456 | OnCongestionEvent(true, _, _, |
| 1457 | Pointwise(PacketNumberEq(), {largest_acked}), |
| 1458 | /*lost_packets=*/Not(IsEmpty()))); |
| 1459 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 1460 | if (manager_.session_decides_what_to_write()) { |
| 1461 | EXPECT_CALL(notifier_, IsFrameOutstanding(_)).WillRepeatedly(Return(true)); |
| 1462 | // Packets [1, 99] are considered as lost, although stream frame in packet |
| 1463 | // 2 is not outstanding. |
| 1464 | EXPECT_CALL(notifier_, OnFrameLost(_)).Times(99); |
| 1465 | } |
| 1466 | manager_.OnAckFrameStart(QuicPacketNumber(102), QuicTime::Delta::Zero(), |
| 1467 | clock_.Now()); |
| 1468 | manager_.OnAckRange(QuicPacketNumber(102), QuicPacketNumber(103)); |
| 1469 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 1470 | } |
| 1471 | |
| 1472 | TEST_P(QuicSentPacketManagerTest, TwoRetransmissionTimeoutsAckSecond) { |
| 1473 | // Send 1 packet. |
| 1474 | SendDataPacket(1); |
| 1475 | |
| 1476 | if (manager_.session_decides_what_to_write()) { |
| 1477 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1478 | .WillOnce(WithArgs<1>(Invoke( |
| 1479 | [this](TransmissionType type) { RetransmitDataPacket(2, type); }))); |
| 1480 | } |
| 1481 | manager_.OnRetransmissionTimeout(); |
| 1482 | if (manager_.session_decides_what_to_write()) { |
| 1483 | EXPECT_EQ(2 * kDefaultLength, |
| 1484 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 1485 | } else { |
| 1486 | EXPECT_TRUE(manager_.HasPendingRetransmissions()); |
| 1487 | EXPECT_EQ(kDefaultLength, |
| 1488 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 1489 | RetransmitNextPacket(2); |
| 1490 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 1491 | } |
| 1492 | |
| 1493 | // Rto a second time. |
| 1494 | if (manager_.session_decides_what_to_write()) { |
| 1495 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1496 | .WillOnce(WithArgs<1>(Invoke( |
| 1497 | [this](TransmissionType type) { RetransmitDataPacket(3, type); }))); |
| 1498 | } |
| 1499 | manager_.OnRetransmissionTimeout(); |
| 1500 | if (manager_.session_decides_what_to_write()) { |
| 1501 | EXPECT_EQ(3 * kDefaultLength, |
| 1502 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 1503 | } else { |
| 1504 | EXPECT_TRUE(manager_.HasPendingRetransmissions()); |
| 1505 | EXPECT_EQ(2 * kDefaultLength, |
| 1506 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 1507 | RetransmitNextPacket(3); |
| 1508 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 1509 | } |
| 1510 | |
| 1511 | // Ack a retransmission and ensure OnRetransmissionTimeout is called. |
| 1512 | EXPECT_CALL(*send_algorithm_, OnRetransmissionTimeout(true)); |
| 1513 | ExpectAck(2); |
| 1514 | manager_.OnAckFrameStart(QuicPacketNumber(2), QuicTime::Delta::Zero(), |
| 1515 | clock_.Now()); |
| 1516 | manager_.OnAckRange(QuicPacketNumber(2), QuicPacketNumber(3)); |
| 1517 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 1518 | |
| 1519 | // The original packet and newest should be outstanding. |
| 1520 | EXPECT_EQ(2 * kDefaultLength, |
| 1521 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 1522 | } |
| 1523 | |
| 1524 | TEST_P(QuicSentPacketManagerTest, TwoRetransmissionTimeoutsAckFirst) { |
| 1525 | // Send 1 packet. |
| 1526 | SendDataPacket(1); |
| 1527 | |
| 1528 | if (manager_.session_decides_what_to_write()) { |
| 1529 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1530 | .WillOnce(WithArgs<1>(Invoke( |
| 1531 | [this](TransmissionType type) { RetransmitDataPacket(2, type); }))); |
| 1532 | } |
| 1533 | manager_.OnRetransmissionTimeout(); |
| 1534 | if (manager_.session_decides_what_to_write()) { |
| 1535 | EXPECT_EQ(2 * kDefaultLength, |
| 1536 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 1537 | } else { |
| 1538 | EXPECT_TRUE(manager_.HasPendingRetransmissions()); |
| 1539 | EXPECT_EQ(kDefaultLength, |
| 1540 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 1541 | RetransmitNextPacket(2); |
| 1542 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 1543 | } |
| 1544 | |
| 1545 | // Rto a second time. |
| 1546 | if (manager_.session_decides_what_to_write()) { |
| 1547 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1548 | .WillOnce(WithArgs<1>(Invoke( |
| 1549 | [this](TransmissionType type) { RetransmitDataPacket(3, type); }))); |
| 1550 | } |
| 1551 | manager_.OnRetransmissionTimeout(); |
| 1552 | if (manager_.session_decides_what_to_write()) { |
| 1553 | EXPECT_EQ(3 * kDefaultLength, |
| 1554 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 1555 | } else { |
| 1556 | EXPECT_TRUE(manager_.HasPendingRetransmissions()); |
| 1557 | EXPECT_EQ(2 * kDefaultLength, |
| 1558 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 1559 | RetransmitNextPacket(3); |
| 1560 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 1561 | } |
| 1562 | |
| 1563 | // Ack a retransmission and ensure OnRetransmissionTimeout is called. |
| 1564 | EXPECT_CALL(*send_algorithm_, OnRetransmissionTimeout(true)); |
| 1565 | ExpectAck(3); |
| 1566 | manager_.OnAckFrameStart(QuicPacketNumber(3), QuicTime::Delta::Zero(), |
| 1567 | clock_.Now()); |
| 1568 | manager_.OnAckRange(QuicPacketNumber(3), QuicPacketNumber(4)); |
| 1569 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 1570 | |
| 1571 | // The first two packets should still be outstanding. |
| 1572 | EXPECT_EQ(2 * kDefaultLength, |
| 1573 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 1574 | } |
| 1575 | |
| 1576 | TEST_P(QuicSentPacketManagerTest, GetTransmissionTime) { |
| 1577 | EXPECT_EQ(QuicTime::Zero(), manager_.GetRetransmissionTime()); |
| 1578 | } |
| 1579 | |
| 1580 | TEST_P(QuicSentPacketManagerTest, GetTransmissionTimeCryptoHandshake) { |
| 1581 | QuicTime crypto_packet_send_time = clock_.Now(); |
| 1582 | SendCryptoPacket(1); |
| 1583 | |
| 1584 | // Check the min. |
| 1585 | RttStats* rtt_stats = const_cast<RttStats*>(manager_.GetRttStats()); |
| 1586 | rtt_stats->set_initial_rtt(QuicTime::Delta::FromMilliseconds(1)); |
| 1587 | EXPECT_EQ(clock_.Now() + QuicTime::Delta::FromMilliseconds(10), |
| 1588 | manager_.GetRetransmissionTime()); |
| 1589 | |
| 1590 | // Test with a standard smoothed RTT. |
| 1591 | rtt_stats->set_initial_rtt(QuicTime::Delta::FromMilliseconds(100)); |
| 1592 | |
| 1593 | QuicTime::Delta srtt = rtt_stats->initial_rtt(); |
| 1594 | QuicTime expected_time = clock_.Now() + 1.5 * srtt; |
| 1595 | EXPECT_EQ(expected_time, manager_.GetRetransmissionTime()); |
| 1596 | |
| 1597 | // Retransmit the packet by invoking the retransmission timeout. |
| 1598 | clock_.AdvanceTime(1.5 * srtt); |
| 1599 | if (manager_.session_decides_what_to_write()) { |
| 1600 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1601 | .WillOnce(InvokeWithoutArgs([this]() { RetransmitCryptoPacket(2); })); |
| 1602 | // When session decides what to write, crypto_packet_send_time gets updated. |
| 1603 | crypto_packet_send_time = clock_.Now(); |
| 1604 | } |
| 1605 | manager_.OnRetransmissionTimeout(); |
| 1606 | if (!manager_.session_decides_what_to_write()) { |
| 1607 | RetransmitNextPacket(2); |
| 1608 | } |
| 1609 | |
| 1610 | // The retransmission time should now be twice as far in the future. |
| 1611 | expected_time = crypto_packet_send_time + srtt * 2 * 1.5; |
| 1612 | EXPECT_EQ(expected_time, manager_.GetRetransmissionTime()); |
| 1613 | |
| 1614 | // Retransmit the packet for the 2nd time. |
| 1615 | clock_.AdvanceTime(2 * 1.5 * srtt); |
| 1616 | if (manager_.session_decides_what_to_write()) { |
| 1617 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1618 | .WillOnce(InvokeWithoutArgs([this]() { RetransmitCryptoPacket(3); })); |
| 1619 | // When session decides what to write, crypto_packet_send_time gets updated. |
| 1620 | crypto_packet_send_time = clock_.Now(); |
| 1621 | } |
| 1622 | manager_.OnRetransmissionTimeout(); |
| 1623 | if (!manager_.session_decides_what_to_write()) { |
| 1624 | RetransmitNextPacket(3); |
| 1625 | } |
| 1626 | |
| 1627 | // Verify exponential backoff of the retransmission timeout. |
| 1628 | expected_time = crypto_packet_send_time + srtt * 4 * 1.5; |
| 1629 | EXPECT_EQ(expected_time, manager_.GetRetransmissionTime()); |
| 1630 | } |
| 1631 | |
| 1632 | TEST_P(QuicSentPacketManagerTest, |
| 1633 | GetConservativeTransmissionTimeCryptoHandshake) { |
| 1634 | QuicConfig config; |
| 1635 | QuicTagVector options; |
| 1636 | options.push_back(kCONH); |
| 1637 | QuicConfigPeer::SetReceivedConnectionOptions(&config, options); |
| 1638 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 1639 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 1640 | manager_.SetFromConfig(config); |
| 1641 | // Calling SetFromConfig requires mocking out some send algorithm methods. |
| 1642 | EXPECT_CALL(*send_algorithm_, PacingRate(_)) |
| 1643 | .WillRepeatedly(Return(QuicBandwidth::Zero())); |
| 1644 | EXPECT_CALL(*send_algorithm_, GetCongestionWindow()) |
| 1645 | .WillRepeatedly(Return(10 * kDefaultTCPMSS)); |
| 1646 | |
| 1647 | QuicTime crypto_packet_send_time = clock_.Now(); |
| 1648 | SendCryptoPacket(1); |
| 1649 | |
| 1650 | // Check the min. |
| 1651 | RttStats* rtt_stats = const_cast<RttStats*>(manager_.GetRttStats()); |
| 1652 | rtt_stats->set_initial_rtt(QuicTime::Delta::FromMilliseconds(1)); |
| 1653 | EXPECT_EQ(clock_.Now() + QuicTime::Delta::FromMilliseconds(25), |
| 1654 | manager_.GetRetransmissionTime()); |
| 1655 | |
| 1656 | // Test with a standard smoothed RTT. |
| 1657 | rtt_stats->set_initial_rtt(QuicTime::Delta::FromMilliseconds(100)); |
| 1658 | |
| 1659 | QuicTime::Delta srtt = rtt_stats->initial_rtt(); |
| 1660 | QuicTime expected_time = clock_.Now() + 2 * srtt; |
| 1661 | EXPECT_EQ(expected_time, manager_.GetRetransmissionTime()); |
| 1662 | |
| 1663 | // Retransmit the packet by invoking the retransmission timeout. |
| 1664 | clock_.AdvanceTime(2 * srtt); |
| 1665 | if (manager_.session_decides_what_to_write()) { |
| 1666 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1667 | .WillOnce(InvokeWithoutArgs([this]() { RetransmitCryptoPacket(2); })); |
| 1668 | crypto_packet_send_time = clock_.Now(); |
| 1669 | } |
| 1670 | manager_.OnRetransmissionTimeout(); |
| 1671 | if (!manager_.session_decides_what_to_write()) { |
| 1672 | RetransmitNextPacket(2); |
| 1673 | } |
| 1674 | |
| 1675 | // The retransmission time should now be twice as far in the future. |
| 1676 | expected_time = crypto_packet_send_time + srtt * 2 * 2; |
| 1677 | EXPECT_EQ(expected_time, manager_.GetRetransmissionTime()); |
| 1678 | } |
| 1679 | |
| 1680 | TEST_P(QuicSentPacketManagerTest, GetTransmissionTimeTailLossProbe) { |
| 1681 | QuicSentPacketManagerPeer::SetMaxTailLossProbes(&manager_, 2); |
| 1682 | SendDataPacket(1); |
| 1683 | SendDataPacket(2); |
| 1684 | |
| 1685 | // Check the min. |
| 1686 | RttStats* rtt_stats = const_cast<RttStats*>(manager_.GetRttStats()); |
| 1687 | rtt_stats->set_initial_rtt(QuicTime::Delta::FromMilliseconds(1)); |
| 1688 | EXPECT_EQ(clock_.Now() + QuicTime::Delta::FromMilliseconds(10), |
| 1689 | manager_.GetRetransmissionTime()); |
| 1690 | |
| 1691 | // Test with a standard smoothed RTT. |
| 1692 | rtt_stats->set_initial_rtt(QuicTime::Delta::FromMilliseconds(100)); |
| 1693 | QuicTime::Delta srtt = rtt_stats->initial_rtt(); |
| 1694 | QuicTime::Delta expected_tlp_delay = 2 * srtt; |
| 1695 | QuicTime expected_time = clock_.Now() + expected_tlp_delay; |
| 1696 | EXPECT_EQ(expected_time, manager_.GetRetransmissionTime()); |
| 1697 | |
| 1698 | // Retransmit the packet by invoking the retransmission timeout. |
| 1699 | clock_.AdvanceTime(expected_tlp_delay); |
| 1700 | manager_.OnRetransmissionTimeout(); |
| 1701 | EXPECT_EQ(QuicTime::Delta::Zero(), manager_.TimeUntilSend(clock_.Now())); |
| 1702 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 1703 | if (manager_.session_decides_what_to_write()) { |
| 1704 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1705 | .WillOnce(WithArgs<1>(Invoke( |
| 1706 | [this](TransmissionType type) { RetransmitDataPacket(3, type); }))); |
| 1707 | } |
| 1708 | EXPECT_TRUE(manager_.MaybeRetransmitTailLossProbe()); |
| 1709 | if (!manager_.session_decides_what_to_write()) { |
| 1710 | EXPECT_TRUE(manager_.HasPendingRetransmissions()); |
| 1711 | RetransmitNextPacket(3); |
| 1712 | } |
| 1713 | EXPECT_CALL(*send_algorithm_, CanSend(_)).WillOnce(Return(false)); |
| 1714 | EXPECT_EQ(QuicTime::Delta::Infinite(), manager_.TimeUntilSend(clock_.Now())); |
| 1715 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 1716 | |
| 1717 | expected_time = clock_.Now() + expected_tlp_delay; |
| 1718 | EXPECT_EQ(expected_time, manager_.GetRetransmissionTime()); |
| 1719 | } |
| 1720 | |
| 1721 | TEST_P(QuicSentPacketManagerTest, GetTransmissionTimeSpuriousRTO) { |
| 1722 | RttStats* rtt_stats = const_cast<RttStats*>(manager_.GetRttStats()); |
| 1723 | rtt_stats->UpdateRtt(QuicTime::Delta::FromMilliseconds(100), |
| 1724 | QuicTime::Delta::Zero(), QuicTime::Zero()); |
| 1725 | |
| 1726 | SendDataPacket(1); |
| 1727 | SendDataPacket(2); |
| 1728 | SendDataPacket(3); |
| 1729 | SendDataPacket(4); |
| 1730 | |
| 1731 | QuicTime::Delta expected_rto_delay = |
| 1732 | rtt_stats->smoothed_rtt() + 4 * rtt_stats->mean_deviation(); |
| 1733 | QuicTime expected_time = clock_.Now() + expected_rto_delay; |
| 1734 | EXPECT_EQ(expected_time, manager_.GetRetransmissionTime()); |
| 1735 | |
| 1736 | // Retransmit the packet by invoking the retransmission timeout. |
| 1737 | clock_.AdvanceTime(expected_rto_delay); |
| 1738 | if (manager_.session_decides_what_to_write()) { |
| 1739 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1740 | .Times(2) |
| 1741 | .WillOnce(WithArgs<1>(Invoke( |
| 1742 | [this](TransmissionType type) { RetransmitDataPacket(5, type); }))) |
| 1743 | .WillOnce(WithArgs<1>(Invoke( |
| 1744 | [this](TransmissionType type) { RetransmitDataPacket(6, type); }))); |
| 1745 | } |
| 1746 | manager_.OnRetransmissionTimeout(); |
| 1747 | if (!manager_.session_decides_what_to_write()) { |
| 1748 | // All packets are still considered inflight. |
| 1749 | EXPECT_EQ(4 * kDefaultLength, |
| 1750 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 1751 | RetransmitNextPacket(5); |
| 1752 | RetransmitNextPacket(6); |
| 1753 | } |
| 1754 | // All previous packets are inflight, plus two rto retransmissions. |
| 1755 | EXPECT_EQ(6 * kDefaultLength, |
| 1756 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 1757 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 1758 | |
| 1759 | // The delay should double the second time. |
| 1760 | expected_time = clock_.Now() + expected_rto_delay + expected_rto_delay; |
| 1761 | // Once we always base the timer on the right edge, leaving the older packets |
| 1762 | // in flight doesn't change the timeout. |
| 1763 | EXPECT_EQ(expected_time, manager_.GetRetransmissionTime()); |
| 1764 | |
| 1765 | // Ack a packet before the first RTO and ensure the RTO timeout returns to the |
| 1766 | // original value and OnRetransmissionTimeout is not called or reverted. |
| 1767 | ExpectAck(2); |
| 1768 | manager_.OnAckFrameStart(QuicPacketNumber(2), QuicTime::Delta::Infinite(), |
| 1769 | clock_.Now()); |
| 1770 | manager_.OnAckRange(QuicPacketNumber(2), QuicPacketNumber(3)); |
| 1771 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 1772 | EXPECT_FALSE(manager_.HasPendingRetransmissions()); |
| 1773 | EXPECT_EQ(5 * kDefaultLength, |
| 1774 | QuicSentPacketManagerPeer::GetBytesInFlight(&manager_)); |
| 1775 | |
| 1776 | // Wait 2RTTs from now for the RTO, since it's the max of the RTO time |
| 1777 | // and the TLP time. In production, there would always be two TLP's first. |
| 1778 | // Since retransmission was spurious, smoothed_rtt_ is expired, and replaced |
| 1779 | // by the latest RTT sample of 500ms. |
| 1780 | expected_time = clock_.Now() + QuicTime::Delta::FromMilliseconds(1000); |
| 1781 | // Once we always base the timer on the right edge, leaving the older packets |
| 1782 | // in flight doesn't change the timeout. |
| 1783 | EXPECT_EQ(expected_time, manager_.GetRetransmissionTime()); |
| 1784 | } |
| 1785 | |
| 1786 | TEST_P(QuicSentPacketManagerTest, GetTransmissionDelayMin) { |
| 1787 | SendDataPacket(1); |
| 1788 | // Provide a 1ms RTT sample. |
| 1789 | const_cast<RttStats*>(manager_.GetRttStats()) |
| 1790 | ->UpdateRtt(QuicTime::Delta::FromMilliseconds(1), QuicTime::Delta::Zero(), |
| 1791 | QuicTime::Zero()); |
| 1792 | QuicTime::Delta delay = QuicTime::Delta::FromMilliseconds(200); |
| 1793 | |
| 1794 | // If the delay is smaller than the min, ensure it exponentially backs off |
| 1795 | // from the min. |
| 1796 | for (int i = 0; i < 5; ++i) { |
| 1797 | EXPECT_EQ(delay, |
| 1798 | QuicSentPacketManagerPeer::GetRetransmissionDelay(&manager_)); |
| 1799 | EXPECT_EQ(delay, |
| 1800 | QuicSentPacketManagerPeer::GetRetransmissionDelay(&manager_, i)); |
| 1801 | delay = delay + delay; |
| 1802 | if (manager_.session_decides_what_to_write()) { |
| 1803 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1804 | .WillOnce(WithArgs<1>(Invoke([this, i](TransmissionType type) { |
| 1805 | RetransmitDataPacket(i + 2, type); |
| 1806 | }))); |
| 1807 | } |
| 1808 | manager_.OnRetransmissionTimeout(); |
| 1809 | if (!manager_.session_decides_what_to_write()) { |
| 1810 | RetransmitNextPacket(i + 2); |
| 1811 | } |
| 1812 | } |
| 1813 | } |
| 1814 | |
| 1815 | TEST_P(QuicSentPacketManagerTest, GetTransmissionDelayMax) { |
| 1816 | SendDataPacket(1); |
| 1817 | // Provide a 60s RTT sample. |
| 1818 | const_cast<RttStats*>(manager_.GetRttStats()) |
| 1819 | ->UpdateRtt(QuicTime::Delta::FromSeconds(60), QuicTime::Delta::Zero(), |
| 1820 | QuicTime::Zero()); |
| 1821 | |
| 1822 | EXPECT_EQ(QuicTime::Delta::FromSeconds(60), |
| 1823 | QuicSentPacketManagerPeer::GetRetransmissionDelay(&manager_)); |
| 1824 | EXPECT_EQ(QuicTime::Delta::FromSeconds(60), |
| 1825 | QuicSentPacketManagerPeer::GetRetransmissionDelay(&manager_, 0)); |
| 1826 | } |
| 1827 | |
| 1828 | TEST_P(QuicSentPacketManagerTest, GetTransmissionDelayExponentialBackoff) { |
| 1829 | SendDataPacket(1); |
| 1830 | QuicTime::Delta delay = QuicTime::Delta::FromMilliseconds(500); |
| 1831 | |
| 1832 | // Delay should back off exponentially. |
| 1833 | for (int i = 0; i < 5; ++i) { |
| 1834 | EXPECT_EQ(delay, |
| 1835 | QuicSentPacketManagerPeer::GetRetransmissionDelay(&manager_)); |
| 1836 | EXPECT_EQ(delay, |
| 1837 | QuicSentPacketManagerPeer::GetRetransmissionDelay(&manager_, i)); |
| 1838 | delay = delay + delay; |
| 1839 | if (manager_.session_decides_what_to_write()) { |
| 1840 | EXPECT_CALL(notifier_, RetransmitFrames(_, _)) |
| 1841 | .WillOnce(WithArgs<1>(Invoke([this, i](TransmissionType type) { |
| 1842 | RetransmitDataPacket(i + 2, type); |
| 1843 | }))); |
| 1844 | } |
| 1845 | manager_.OnRetransmissionTimeout(); |
| 1846 | if (!manager_.session_decides_what_to_write()) { |
| 1847 | RetransmitNextPacket(i + 2); |
| 1848 | } |
| 1849 | } |
| 1850 | } |
| 1851 | |
| 1852 | TEST_P(QuicSentPacketManagerTest, RetransmissionDelay) { |
| 1853 | RttStats* rtt_stats = const_cast<RttStats*>(manager_.GetRttStats()); |
| 1854 | const int64_t kRttMs = 250; |
| 1855 | const int64_t kDeviationMs = 5; |
| 1856 | |
| 1857 | rtt_stats->UpdateRtt(QuicTime::Delta::FromMilliseconds(kRttMs), |
| 1858 | QuicTime::Delta::Zero(), clock_.Now()); |
| 1859 | |
| 1860 | // Initial value is to set the median deviation to half of the initial rtt, |
| 1861 | // the median in then multiplied by a factor of 4 and finally the smoothed rtt |
| 1862 | // is added which is the initial rtt. |
| 1863 | QuicTime::Delta expected_delay = |
| 1864 | QuicTime::Delta::FromMilliseconds(kRttMs + kRttMs / 2 * 4); |
| 1865 | EXPECT_EQ(expected_delay, |
| 1866 | QuicSentPacketManagerPeer::GetRetransmissionDelay(&manager_)); |
| 1867 | EXPECT_EQ(expected_delay, |
| 1868 | QuicSentPacketManagerPeer::GetRetransmissionDelay(&manager_, 0)); |
| 1869 | |
| 1870 | for (int i = 0; i < 100; ++i) { |
| 1871 | // Run to make sure that we converge. |
| 1872 | rtt_stats->UpdateRtt( |
| 1873 | QuicTime::Delta::FromMilliseconds(kRttMs + kDeviationMs), |
| 1874 | QuicTime::Delta::Zero(), clock_.Now()); |
| 1875 | rtt_stats->UpdateRtt( |
| 1876 | QuicTime::Delta::FromMilliseconds(kRttMs - kDeviationMs), |
| 1877 | QuicTime::Delta::Zero(), clock_.Now()); |
| 1878 | } |
| 1879 | expected_delay = QuicTime::Delta::FromMilliseconds(kRttMs + kDeviationMs * 4); |
| 1880 | |
| 1881 | EXPECT_NEAR(kRttMs, rtt_stats->smoothed_rtt().ToMilliseconds(), 1); |
| 1882 | EXPECT_NEAR(expected_delay.ToMilliseconds(), |
| 1883 | QuicSentPacketManagerPeer::GetRetransmissionDelay(&manager_) |
| 1884 | .ToMilliseconds(), |
| 1885 | 1); |
| 1886 | EXPECT_EQ(QuicSentPacketManagerPeer::GetRetransmissionDelay(&manager_, 0), |
| 1887 | QuicSentPacketManagerPeer::GetRetransmissionDelay(&manager_)); |
| 1888 | } |
| 1889 | |
| 1890 | TEST_P(QuicSentPacketManagerTest, GetLossDelay) { |
| 1891 | auto loss_algorithm = QuicMakeUnique<MockLossAlgorithm>(); |
| 1892 | QuicSentPacketManagerPeer::SetLossAlgorithm(&manager_, loss_algorithm.get()); |
| 1893 | |
| 1894 | EXPECT_CALL(*loss_algorithm, GetLossTimeout()) |
| 1895 | .WillRepeatedly(Return(QuicTime::Zero())); |
| 1896 | SendDataPacket(1); |
| 1897 | SendDataPacket(2); |
| 1898 | |
| 1899 | // Handle an ack which causes the loss algorithm to be evaluated and |
| 1900 | // set the loss timeout. |
| 1901 | ExpectAck(2); |
| 1902 | EXPECT_CALL(*loss_algorithm, DetectLosses(_, _, _, _, _, _)); |
| 1903 | manager_.OnAckFrameStart(QuicPacketNumber(2), QuicTime::Delta::Infinite(), |
| 1904 | clock_.Now()); |
| 1905 | manager_.OnAckRange(QuicPacketNumber(2), QuicPacketNumber(3)); |
| 1906 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 1907 | |
| 1908 | QuicTime timeout(clock_.Now() + QuicTime::Delta::FromMilliseconds(10)); |
| 1909 | EXPECT_CALL(*loss_algorithm, GetLossTimeout()) |
| 1910 | .WillRepeatedly(Return(timeout)); |
| 1911 | EXPECT_EQ(timeout, manager_.GetRetransmissionTime()); |
| 1912 | |
| 1913 | // Fire the retransmission timeout and ensure the loss detection algorithm |
| 1914 | // is invoked. |
| 1915 | EXPECT_CALL(*loss_algorithm, DetectLosses(_, _, _, _, _, _)); |
| 1916 | manager_.OnRetransmissionTimeout(); |
| 1917 | } |
| 1918 | |
| 1919 | TEST_P(QuicSentPacketManagerTest, NegotiateTimeLossDetectionFromOptions) { |
| 1920 | EXPECT_EQ(kNack, QuicSentPacketManagerPeer::GetLossAlgorithm(&manager_) |
| 1921 | ->GetLossDetectionType()); |
| 1922 | |
| 1923 | QuicConfig config; |
| 1924 | QuicTagVector options; |
| 1925 | options.push_back(kTIME); |
| 1926 | QuicConfigPeer::SetReceivedConnectionOptions(&config, options); |
| 1927 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 1928 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 1929 | manager_.SetFromConfig(config); |
| 1930 | |
| 1931 | EXPECT_EQ(kTime, QuicSentPacketManagerPeer::GetLossAlgorithm(&manager_) |
| 1932 | ->GetLossDetectionType()); |
| 1933 | } |
| 1934 | |
| 1935 | TEST_P(QuicSentPacketManagerTest, NegotiateCongestionControlFromOptions) { |
| 1936 | QuicConfig config; |
| 1937 | QuicTagVector options; |
| 1938 | |
| 1939 | options.push_back(kRENO); |
| 1940 | QuicConfigPeer::SetReceivedConnectionOptions(&config, options); |
| 1941 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 1942 | manager_.SetFromConfig(config); |
| 1943 | EXPECT_EQ(kRenoBytes, QuicSentPacketManagerPeer::GetSendAlgorithm(manager_) |
| 1944 | ->GetCongestionControlType()); |
| 1945 | |
| 1946 | options.clear(); |
| 1947 | options.push_back(kTBBR); |
| 1948 | QuicConfigPeer::SetReceivedConnectionOptions(&config, options); |
| 1949 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 1950 | manager_.SetFromConfig(config); |
| 1951 | EXPECT_EQ(kBBR, QuicSentPacketManagerPeer::GetSendAlgorithm(manager_) |
| 1952 | ->GetCongestionControlType()); |
| 1953 | |
| 1954 | options.clear(); |
| 1955 | options.push_back(kBYTE); |
| 1956 | QuicConfigPeer::SetReceivedConnectionOptions(&config, options); |
| 1957 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 1958 | manager_.SetFromConfig(config); |
| 1959 | EXPECT_EQ(kCubicBytes, QuicSentPacketManagerPeer::GetSendAlgorithm(manager_) |
| 1960 | ->GetCongestionControlType()); |
| 1961 | options.clear(); |
| 1962 | options.push_back(kRENO); |
| 1963 | options.push_back(kBYTE); |
| 1964 | QuicConfigPeer::SetReceivedConnectionOptions(&config, options); |
| 1965 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 1966 | manager_.SetFromConfig(config); |
| 1967 | EXPECT_EQ(kRenoBytes, QuicSentPacketManagerPeer::GetSendAlgorithm(manager_) |
| 1968 | ->GetCongestionControlType()); |
| 1969 | } |
| 1970 | |
| 1971 | TEST_P(QuicSentPacketManagerTest, NegotiateClientCongestionControlFromOptions) { |
| 1972 | QuicConfig config; |
| 1973 | QuicTagVector options; |
| 1974 | |
| 1975 | // No change if the server receives client options. |
| 1976 | const SendAlgorithmInterface* mock_sender = |
| 1977 | QuicSentPacketManagerPeer::GetSendAlgorithm(manager_); |
| 1978 | options.push_back(kRENO); |
| 1979 | config.SetClientConnectionOptions(options); |
| 1980 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 1981 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 1982 | manager_.SetFromConfig(config); |
| 1983 | EXPECT_EQ(mock_sender, QuicSentPacketManagerPeer::GetSendAlgorithm(manager_)); |
| 1984 | |
| 1985 | // Change the congestion control on the client with client options. |
| 1986 | QuicSentPacketManagerPeer::SetPerspective(&manager_, Perspective::IS_CLIENT); |
| 1987 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 1988 | manager_.SetFromConfig(config); |
| 1989 | EXPECT_EQ(kRenoBytes, QuicSentPacketManagerPeer::GetSendAlgorithm(manager_) |
| 1990 | ->GetCongestionControlType()); |
| 1991 | |
| 1992 | options.clear(); |
| 1993 | options.push_back(kTBBR); |
| 1994 | config.SetClientConnectionOptions(options); |
| 1995 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 1996 | manager_.SetFromConfig(config); |
| 1997 | EXPECT_EQ(kBBR, QuicSentPacketManagerPeer::GetSendAlgorithm(manager_) |
| 1998 | ->GetCongestionControlType()); |
| 1999 | |
| 2000 | options.clear(); |
| 2001 | options.push_back(kBYTE); |
| 2002 | config.SetClientConnectionOptions(options); |
| 2003 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 2004 | manager_.SetFromConfig(config); |
| 2005 | EXPECT_EQ(kCubicBytes, QuicSentPacketManagerPeer::GetSendAlgorithm(manager_) |
| 2006 | ->GetCongestionControlType()); |
| 2007 | |
| 2008 | options.clear(); |
| 2009 | options.push_back(kRENO); |
| 2010 | options.push_back(kBYTE); |
| 2011 | config.SetClientConnectionOptions(options); |
| 2012 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 2013 | manager_.SetFromConfig(config); |
| 2014 | EXPECT_EQ(kRenoBytes, QuicSentPacketManagerPeer::GetSendAlgorithm(manager_) |
| 2015 | ->GetCongestionControlType()); |
| 2016 | } |
| 2017 | |
| 2018 | TEST_P(QuicSentPacketManagerTest, NegotiateNumConnectionsFromOptions) { |
| 2019 | QuicConfig config; |
| 2020 | QuicTagVector options; |
| 2021 | |
| 2022 | options.push_back(k1CON); |
| 2023 | QuicConfigPeer::SetReceivedConnectionOptions(&config, options); |
| 2024 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 2025 | EXPECT_CALL(*send_algorithm_, SetNumEmulatedConnections(1)); |
| 2026 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 2027 | manager_.SetFromConfig(config); |
| 2028 | |
| 2029 | QuicSentPacketManagerPeer::SetPerspective(&manager_, Perspective::IS_CLIENT); |
| 2030 | QuicConfig client_config; |
| 2031 | client_config.SetConnectionOptionsToSend(options); |
| 2032 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 2033 | EXPECT_CALL(*send_algorithm_, SetNumEmulatedConnections(1)); |
| 2034 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 2035 | manager_.SetFromConfig(client_config); |
| 2036 | } |
| 2037 | |
| 2038 | TEST_P(QuicSentPacketManagerTest, NegotiateNoMinTLPFromOptionsAtServer) { |
| 2039 | QuicConfig config; |
| 2040 | QuicTagVector options; |
| 2041 | |
| 2042 | options.push_back(kMAD2); |
| 2043 | QuicConfigPeer::SetReceivedConnectionOptions(&config, options); |
| 2044 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 2045 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 2046 | EXPECT_CALL(*send_algorithm_, PacingRate(_)) |
| 2047 | .WillRepeatedly(Return(QuicBandwidth::Zero())); |
| 2048 | EXPECT_CALL(*send_algorithm_, GetCongestionWindow()) |
| 2049 | .WillOnce(Return(10 * kDefaultTCPMSS)); |
| 2050 | manager_.SetFromConfig(config); |
| 2051 | // Set the initial RTT to 1us. |
| 2052 | QuicSentPacketManagerPeer::GetRttStats(&manager_)->set_initial_rtt( |
| 2053 | QuicTime::Delta::FromMicroseconds(1)); |
| 2054 | // The TLP with fewer than 2 packets outstanding includes 1/2 min RTO(200ms). |
| 2055 | EXPECT_EQ(QuicTime::Delta::FromMicroseconds(100002), |
| 2056 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_)); |
| 2057 | EXPECT_EQ(QuicTime::Delta::FromMicroseconds(100002), |
| 2058 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_, 0)); |
| 2059 | |
| 2060 | // Send two packets, and the TLP should be 2 us. |
| 2061 | SendDataPacket(1); |
| 2062 | SendDataPacket(2); |
| 2063 | EXPECT_EQ(QuicTime::Delta::FromMicroseconds(2), |
| 2064 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_)); |
| 2065 | EXPECT_EQ(QuicTime::Delta::FromMicroseconds(2), |
| 2066 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_, 0)); |
| 2067 | } |
| 2068 | |
| 2069 | TEST_P(QuicSentPacketManagerTest, NegotiateNoMinTLPFromOptionsAtClient) { |
| 2070 | QuicConfig client_config; |
| 2071 | QuicTagVector options; |
| 2072 | |
| 2073 | options.push_back(kMAD2); |
| 2074 | QuicSentPacketManagerPeer::SetPerspective(&manager_, Perspective::IS_CLIENT); |
| 2075 | client_config.SetConnectionOptionsToSend(options); |
| 2076 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 2077 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 2078 | EXPECT_CALL(*send_algorithm_, PacingRate(_)) |
| 2079 | .WillRepeatedly(Return(QuicBandwidth::Zero())); |
| 2080 | EXPECT_CALL(*send_algorithm_, GetCongestionWindow()) |
| 2081 | .WillOnce(Return(10 * kDefaultTCPMSS)); |
| 2082 | manager_.SetFromConfig(client_config); |
| 2083 | // Set the initial RTT to 1us. |
| 2084 | QuicSentPacketManagerPeer::GetRttStats(&manager_)->set_initial_rtt( |
| 2085 | QuicTime::Delta::FromMicroseconds(1)); |
| 2086 | // The TLP with fewer than 2 packets outstanding includes 1/2 min RTO(200ms). |
| 2087 | EXPECT_EQ(QuicTime::Delta::FromMicroseconds(100002), |
| 2088 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_)); |
| 2089 | EXPECT_EQ(QuicTime::Delta::FromMicroseconds(100002), |
| 2090 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_, 0)); |
| 2091 | // Send two packets, and the TLP should be 2 us. |
| 2092 | SendDataPacket(1); |
| 2093 | SendDataPacket(2); |
| 2094 | EXPECT_EQ(QuicTime::Delta::FromMicroseconds(2), |
| 2095 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_)); |
| 2096 | EXPECT_EQ(QuicTime::Delta::FromMicroseconds(2), |
| 2097 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_, 0)); |
| 2098 | } |
| 2099 | |
| 2100 | TEST_P(QuicSentPacketManagerTest, NegotiateIETFTLPFromOptionsAtServer) { |
| 2101 | QuicConfig config; |
| 2102 | QuicTagVector options; |
| 2103 | |
| 2104 | options.push_back(kMAD4); |
| 2105 | QuicConfigPeer::SetReceivedConnectionOptions(&config, options); |
| 2106 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 2107 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 2108 | manager_.SetFromConfig(config); |
| 2109 | // Provide an RTT measurement of 100ms. |
| 2110 | RttStats* rtt_stats = const_cast<RttStats*>(manager_.GetRttStats()); |
| 2111 | rtt_stats->UpdateRtt(QuicTime::Delta::FromMilliseconds(100), |
| 2112 | QuicTime::Delta::Zero(), QuicTime::Zero()); |
| 2113 | // Expect 1.5x * SRTT + 0ms MAD |
| 2114 | EXPECT_EQ(QuicTime::Delta::FromMilliseconds(150), |
| 2115 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_)); |
| 2116 | EXPECT_EQ(QuicTime::Delta::FromMilliseconds(150), |
| 2117 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_, 0)); |
| 2118 | // Expect 1.5x * SRTT + 50ms MAD |
| 2119 | rtt_stats->UpdateRtt(QuicTime::Delta::FromMilliseconds(150), |
| 2120 | QuicTime::Delta::FromMilliseconds(50), QuicTime::Zero()); |
| 2121 | EXPECT_EQ(QuicTime::Delta::FromMilliseconds(100), rtt_stats->smoothed_rtt()); |
| 2122 | EXPECT_EQ(QuicTime::Delta::FromMilliseconds(200), |
| 2123 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_)); |
| 2124 | EXPECT_EQ(QuicTime::Delta::FromMilliseconds(200), |
| 2125 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_, 0)); |
| 2126 | } |
| 2127 | |
| 2128 | TEST_P(QuicSentPacketManagerTest, NegotiateIETFTLPFromOptionsAtClient) { |
| 2129 | QuicConfig client_config; |
| 2130 | QuicTagVector options; |
| 2131 | |
| 2132 | options.push_back(kMAD4); |
| 2133 | QuicSentPacketManagerPeer::SetPerspective(&manager_, Perspective::IS_CLIENT); |
| 2134 | client_config.SetConnectionOptionsToSend(options); |
| 2135 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 2136 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 2137 | manager_.SetFromConfig(client_config); |
| 2138 | // Provide an RTT measurement of 100ms. |
| 2139 | RttStats* rtt_stats = const_cast<RttStats*>(manager_.GetRttStats()); |
| 2140 | rtt_stats->UpdateRtt(QuicTime::Delta::FromMilliseconds(100), |
| 2141 | QuicTime::Delta::Zero(), QuicTime::Zero()); |
| 2142 | // Expect 1.5x * SRTT + 0ms MAD |
| 2143 | EXPECT_EQ(QuicTime::Delta::FromMilliseconds(150), |
| 2144 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_)); |
| 2145 | EXPECT_EQ(QuicTime::Delta::FromMilliseconds(150), |
| 2146 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_, 0)); |
| 2147 | // Expect 1.5x * SRTT + 50ms MAD |
| 2148 | rtt_stats->UpdateRtt(QuicTime::Delta::FromMilliseconds(150), |
| 2149 | QuicTime::Delta::FromMilliseconds(50), QuicTime::Zero()); |
| 2150 | EXPECT_EQ(QuicTime::Delta::FromMilliseconds(100), rtt_stats->smoothed_rtt()); |
| 2151 | EXPECT_EQ(QuicTime::Delta::FromMilliseconds(200), |
| 2152 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_)); |
| 2153 | EXPECT_EQ(QuicTime::Delta::FromMilliseconds(200), |
| 2154 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_, 0)); |
| 2155 | } |
| 2156 | |
| 2157 | TEST_P(QuicSentPacketManagerTest, NegotiateNoMinRTOFromOptionsAtServer) { |
| 2158 | QuicConfig config; |
| 2159 | QuicTagVector options; |
| 2160 | |
| 2161 | options.push_back(kMAD3); |
| 2162 | QuicConfigPeer::SetReceivedConnectionOptions(&config, options); |
| 2163 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 2164 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 2165 | manager_.SetFromConfig(config); |
| 2166 | // Provide one RTT measurement, because otherwise we use the default of 500ms. |
| 2167 | RttStats* rtt_stats = const_cast<RttStats*>(manager_.GetRttStats()); |
| 2168 | rtt_stats->UpdateRtt(QuicTime::Delta::FromMicroseconds(1), |
| 2169 | QuicTime::Delta::Zero(), QuicTime::Zero()); |
| 2170 | EXPECT_EQ(QuicTime::Delta::FromMicroseconds(1), |
| 2171 | QuicSentPacketManagerPeer::GetRetransmissionDelay(&manager_)); |
| 2172 | EXPECT_EQ(QuicTime::Delta::FromMicroseconds(1), |
| 2173 | QuicSentPacketManagerPeer::GetRetransmissionDelay(&manager_, 0)); |
| 2174 | // The TLP with fewer than 2 packets outstanding includes 1/2 min RTO(0ms). |
| 2175 | EXPECT_EQ(QuicTime::Delta::FromMicroseconds(2), |
| 2176 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_)); |
| 2177 | EXPECT_EQ(QuicTime::Delta::FromMicroseconds(2), |
| 2178 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_, 0)); |
| 2179 | } |
| 2180 | |
| 2181 | TEST_P(QuicSentPacketManagerTest, NegotiateNoMinRTOFromOptionsAtClient) { |
| 2182 | QuicConfig client_config; |
| 2183 | QuicTagVector options; |
| 2184 | |
| 2185 | options.push_back(kMAD3); |
| 2186 | QuicSentPacketManagerPeer::SetPerspective(&manager_, Perspective::IS_CLIENT); |
| 2187 | client_config.SetConnectionOptionsToSend(options); |
| 2188 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 2189 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 2190 | manager_.SetFromConfig(client_config); |
| 2191 | // Provide one RTT measurement, because otherwise we use the default of 500ms. |
| 2192 | RttStats* rtt_stats = const_cast<RttStats*>(manager_.GetRttStats()); |
| 2193 | rtt_stats->UpdateRtt(QuicTime::Delta::FromMicroseconds(1), |
| 2194 | QuicTime::Delta::Zero(), QuicTime::Zero()); |
| 2195 | EXPECT_EQ(QuicTime::Delta::FromMicroseconds(1), |
| 2196 | QuicSentPacketManagerPeer::GetRetransmissionDelay(&manager_)); |
| 2197 | EXPECT_EQ(QuicTime::Delta::FromMicroseconds(1), |
| 2198 | QuicSentPacketManagerPeer::GetRetransmissionDelay(&manager_, 0)); |
| 2199 | // The TLP with fewer than 2 packets outstanding includes 1/2 min RTO(0ms). |
| 2200 | EXPECT_EQ(QuicTime::Delta::FromMicroseconds(2), |
| 2201 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_)); |
| 2202 | EXPECT_EQ(QuicTime::Delta::FromMicroseconds(2), |
| 2203 | QuicSentPacketManagerPeer::GetTailLossProbeDelay(&manager_, 0)); |
| 2204 | } |
| 2205 | |
| 2206 | TEST_P(QuicSentPacketManagerTest, NegotiateNoTLPFromOptionsAtServer) { |
| 2207 | QuicConfig config; |
| 2208 | QuicTagVector options; |
| 2209 | |
| 2210 | options.push_back(kNTLP); |
| 2211 | QuicConfigPeer::SetReceivedConnectionOptions(&config, options); |
| 2212 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 2213 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 2214 | manager_.SetFromConfig(config); |
| 2215 | EXPECT_EQ(0u, QuicSentPacketManagerPeer::GetMaxTailLossProbes(&manager_)); |
| 2216 | } |
| 2217 | |
| 2218 | TEST_P(QuicSentPacketManagerTest, NegotiateNoTLPFromOptionsAtClient) { |
| 2219 | QuicConfig client_config; |
| 2220 | QuicTagVector options; |
| 2221 | |
| 2222 | options.push_back(kNTLP); |
| 2223 | QuicSentPacketManagerPeer::SetPerspective(&manager_, Perspective::IS_CLIENT); |
| 2224 | client_config.SetConnectionOptionsToSend(options); |
| 2225 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 2226 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 2227 | manager_.SetFromConfig(client_config); |
| 2228 | EXPECT_EQ(0u, QuicSentPacketManagerPeer::GetMaxTailLossProbes(&manager_)); |
| 2229 | } |
| 2230 | |
| 2231 | TEST_P(QuicSentPacketManagerTest, Negotiate1TLPFromOptionsAtServer) { |
| 2232 | QuicConfig config; |
| 2233 | QuicTagVector options; |
| 2234 | |
| 2235 | options.push_back(k1TLP); |
| 2236 | QuicConfigPeer::SetReceivedConnectionOptions(&config, options); |
| 2237 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 2238 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 2239 | manager_.SetFromConfig(config); |
| 2240 | EXPECT_EQ(1u, QuicSentPacketManagerPeer::GetMaxTailLossProbes(&manager_)); |
| 2241 | } |
| 2242 | |
| 2243 | TEST_P(QuicSentPacketManagerTest, Negotiate1TLPFromOptionsAtClient) { |
| 2244 | QuicConfig client_config; |
| 2245 | QuicTagVector options; |
| 2246 | |
| 2247 | options.push_back(k1TLP); |
| 2248 | QuicSentPacketManagerPeer::SetPerspective(&manager_, Perspective::IS_CLIENT); |
| 2249 | client_config.SetConnectionOptionsToSend(options); |
| 2250 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 2251 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 2252 | manager_.SetFromConfig(client_config); |
| 2253 | EXPECT_EQ(1u, QuicSentPacketManagerPeer::GetMaxTailLossProbes(&manager_)); |
| 2254 | } |
| 2255 | |
| 2256 | TEST_P(QuicSentPacketManagerTest, NegotiateTLPRttFromOptionsAtServer) { |
| 2257 | QuicConfig config; |
| 2258 | QuicTagVector options; |
| 2259 | |
| 2260 | options.push_back(kTLPR); |
| 2261 | QuicConfigPeer::SetReceivedConnectionOptions(&config, options); |
| 2262 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 2263 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 2264 | manager_.SetFromConfig(config); |
| 2265 | EXPECT_TRUE( |
| 2266 | QuicSentPacketManagerPeer::GetEnableHalfRttTailLossProbe(&manager_)); |
| 2267 | } |
| 2268 | |
| 2269 | TEST_P(QuicSentPacketManagerTest, NegotiateTLPRttFromOptionsAtClient) { |
| 2270 | QuicConfig client_config; |
| 2271 | QuicTagVector options; |
| 2272 | |
| 2273 | options.push_back(kTLPR); |
| 2274 | QuicSentPacketManagerPeer::SetPerspective(&manager_, Perspective::IS_CLIENT); |
| 2275 | client_config.SetConnectionOptionsToSend(options); |
| 2276 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 2277 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 2278 | manager_.SetFromConfig(client_config); |
| 2279 | EXPECT_TRUE( |
| 2280 | QuicSentPacketManagerPeer::GetEnableHalfRttTailLossProbe(&manager_)); |
| 2281 | } |
| 2282 | |
| 2283 | TEST_P(QuicSentPacketManagerTest, NegotiateNewRTOFromOptionsAtServer) { |
| 2284 | EXPECT_FALSE(QuicSentPacketManagerPeer::GetUseNewRto(&manager_)); |
| 2285 | QuicConfig config; |
| 2286 | QuicTagVector options; |
| 2287 | |
| 2288 | options.push_back(kNRTO); |
| 2289 | QuicConfigPeer::SetReceivedConnectionOptions(&config, options); |
| 2290 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 2291 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 2292 | manager_.SetFromConfig(config); |
| 2293 | EXPECT_TRUE(QuicSentPacketManagerPeer::GetUseNewRto(&manager_)); |
| 2294 | } |
| 2295 | |
| 2296 | TEST_P(QuicSentPacketManagerTest, NegotiateNewRTOFromOptionsAtClient) { |
| 2297 | EXPECT_FALSE(QuicSentPacketManagerPeer::GetUseNewRto(&manager_)); |
| 2298 | QuicConfig client_config; |
| 2299 | QuicTagVector options; |
| 2300 | |
| 2301 | options.push_back(kNRTO); |
| 2302 | QuicSentPacketManagerPeer::SetPerspective(&manager_, Perspective::IS_CLIENT); |
| 2303 | client_config.SetConnectionOptionsToSend(options); |
| 2304 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 2305 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 2306 | manager_.SetFromConfig(client_config); |
| 2307 | EXPECT_TRUE(QuicSentPacketManagerPeer::GetUseNewRto(&manager_)); |
| 2308 | } |
| 2309 | |
| 2310 | TEST_P(QuicSentPacketManagerTest, UseInitialRoundTripTimeToSend) { |
| 2311 | QuicTime::Delta initial_rtt = QuicTime::Delta::FromMilliseconds(325); |
| 2312 | EXPECT_NE(initial_rtt, manager_.GetRttStats()->smoothed_rtt()); |
| 2313 | |
| 2314 | QuicConfig config; |
| 2315 | config.SetInitialRoundTripTimeUsToSend(initial_rtt.ToMicroseconds()); |
| 2316 | EXPECT_CALL(*send_algorithm_, SetFromConfig(_, _)); |
| 2317 | EXPECT_CALL(*network_change_visitor_, OnCongestionChange()); |
| 2318 | manager_.SetFromConfig(config); |
| 2319 | |
| 2320 | EXPECT_EQ(QuicTime::Delta::Zero(), manager_.GetRttStats()->smoothed_rtt()); |
| 2321 | EXPECT_EQ(initial_rtt, manager_.GetRttStats()->initial_rtt()); |
| 2322 | } |
| 2323 | |
| 2324 | TEST_P(QuicSentPacketManagerTest, ResumeConnectionState) { |
| 2325 | // The sent packet manager should use the RTT from CachedNetworkParameters if |
| 2326 | // it is provided. |
| 2327 | const QuicTime::Delta kRtt = QuicTime::Delta::FromMilliseconds(1234); |
| 2328 | CachedNetworkParameters cached_network_params; |
| 2329 | cached_network_params.set_min_rtt_ms(kRtt.ToMilliseconds()); |
| 2330 | |
| 2331 | EXPECT_CALL(*send_algorithm_, |
| 2332 | AdjustNetworkParameters(QuicBandwidth::Zero(), kRtt)); |
| 2333 | manager_.ResumeConnectionState(cached_network_params, false); |
| 2334 | EXPECT_EQ(kRtt, manager_.GetRttStats()->initial_rtt()); |
| 2335 | } |
| 2336 | |
| 2337 | TEST_P(QuicSentPacketManagerTest, ConnectionMigrationUnspecifiedChange) { |
| 2338 | RttStats* rtt_stats = const_cast<RttStats*>(manager_.GetRttStats()); |
| 2339 | QuicTime::Delta default_init_rtt = rtt_stats->initial_rtt(); |
| 2340 | rtt_stats->set_initial_rtt(default_init_rtt * 2); |
| 2341 | EXPECT_EQ(2 * default_init_rtt, rtt_stats->initial_rtt()); |
| 2342 | |
| 2343 | QuicSentPacketManagerPeer::SetConsecutiveRtoCount(&manager_, 1); |
| 2344 | EXPECT_EQ(1u, manager_.GetConsecutiveRtoCount()); |
| 2345 | QuicSentPacketManagerPeer::SetConsecutiveTlpCount(&manager_, 2); |
| 2346 | EXPECT_EQ(2u, manager_.GetConsecutiveTlpCount()); |
| 2347 | |
| 2348 | EXPECT_CALL(*send_algorithm_, OnConnectionMigration()); |
| 2349 | manager_.OnConnectionMigration(IPV4_TO_IPV4_CHANGE); |
| 2350 | |
| 2351 | EXPECT_EQ(default_init_rtt, rtt_stats->initial_rtt()); |
| 2352 | EXPECT_EQ(0u, manager_.GetConsecutiveRtoCount()); |
| 2353 | EXPECT_EQ(0u, manager_.GetConsecutiveTlpCount()); |
| 2354 | } |
| 2355 | |
| 2356 | TEST_P(QuicSentPacketManagerTest, ConnectionMigrationIPSubnetChange) { |
| 2357 | RttStats* rtt_stats = const_cast<RttStats*>(manager_.GetRttStats()); |
| 2358 | QuicTime::Delta default_init_rtt = rtt_stats->initial_rtt(); |
| 2359 | rtt_stats->set_initial_rtt(default_init_rtt * 2); |
| 2360 | EXPECT_EQ(2 * default_init_rtt, rtt_stats->initial_rtt()); |
| 2361 | |
| 2362 | QuicSentPacketManagerPeer::SetConsecutiveRtoCount(&manager_, 1); |
| 2363 | EXPECT_EQ(1u, manager_.GetConsecutiveRtoCount()); |
| 2364 | QuicSentPacketManagerPeer::SetConsecutiveTlpCount(&manager_, 2); |
| 2365 | EXPECT_EQ(2u, manager_.GetConsecutiveTlpCount()); |
| 2366 | |
| 2367 | manager_.OnConnectionMigration(IPV4_SUBNET_CHANGE); |
| 2368 | |
| 2369 | EXPECT_EQ(2 * default_init_rtt, rtt_stats->initial_rtt()); |
| 2370 | EXPECT_EQ(1u, manager_.GetConsecutiveRtoCount()); |
| 2371 | EXPECT_EQ(2u, manager_.GetConsecutiveTlpCount()); |
| 2372 | } |
| 2373 | |
| 2374 | TEST_P(QuicSentPacketManagerTest, ConnectionMigrationPortChange) { |
| 2375 | RttStats* rtt_stats = const_cast<RttStats*>(manager_.GetRttStats()); |
| 2376 | QuicTime::Delta default_init_rtt = rtt_stats->initial_rtt(); |
| 2377 | rtt_stats->set_initial_rtt(default_init_rtt * 2); |
| 2378 | EXPECT_EQ(2 * default_init_rtt, rtt_stats->initial_rtt()); |
| 2379 | |
| 2380 | QuicSentPacketManagerPeer::SetConsecutiveRtoCount(&manager_, 1); |
| 2381 | EXPECT_EQ(1u, manager_.GetConsecutiveRtoCount()); |
| 2382 | QuicSentPacketManagerPeer::SetConsecutiveTlpCount(&manager_, 2); |
| 2383 | EXPECT_EQ(2u, manager_.GetConsecutiveTlpCount()); |
| 2384 | |
| 2385 | manager_.OnConnectionMigration(PORT_CHANGE); |
| 2386 | |
| 2387 | EXPECT_EQ(2 * default_init_rtt, rtt_stats->initial_rtt()); |
| 2388 | EXPECT_EQ(1u, manager_.GetConsecutiveRtoCount()); |
| 2389 | EXPECT_EQ(2u, manager_.GetConsecutiveTlpCount()); |
| 2390 | } |
| 2391 | |
| 2392 | TEST_P(QuicSentPacketManagerTest, PathMtuIncreased) { |
| 2393 | EXPECT_CALL(*send_algorithm_, |
| 2394 | OnPacketSent(_, BytesInFlight(), QuicPacketNumber(1), _, _)); |
| 2395 | SerializedPacket packet(QuicPacketNumber(1), PACKET_4BYTE_PACKET_NUMBER, |
| 2396 | nullptr, kDefaultLength + 100, false, false); |
| 2397 | manager_.OnPacketSent(&packet, QuicPacketNumber(), clock_.Now(), |
| 2398 | NOT_RETRANSMISSION, HAS_RETRANSMITTABLE_DATA); |
| 2399 | |
| 2400 | // Ack the large packet and expect the path MTU to increase. |
| 2401 | ExpectAck(1); |
| 2402 | EXPECT_CALL(*network_change_visitor_, |
| 2403 | OnPathMtuIncreased(kDefaultLength + 100)); |
| 2404 | QuicAckFrame ack_frame = InitAckFrame(1); |
| 2405 | manager_.OnAckFrameStart(QuicPacketNumber(1), QuicTime::Delta::Infinite(), |
| 2406 | clock_.Now()); |
| 2407 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 2408 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 2409 | } |
| 2410 | |
| 2411 | TEST_P(QuicSentPacketManagerTest, OnAckRangeSlowPath) { |
| 2412 | // Send packets 1 - 20. |
| 2413 | for (size_t i = 1; i <= 20; ++i) { |
| 2414 | SendDataPacket(i); |
| 2415 | } |
| 2416 | // Ack [5, 7), [10, 12), [15, 17). |
| 2417 | uint64_t acked1[] = {5, 6, 10, 11, 15, 16}; |
| 2418 | uint64_t lost1[] = {1, 2, 3, 4, 7, 8, 9, 12, 13}; |
| 2419 | ExpectAcksAndLosses(true, acked1, QUIC_ARRAYSIZE(acked1), lost1, |
| 2420 | QUIC_ARRAYSIZE(lost1)); |
| 2421 | EXPECT_CALL(notifier_, OnFrameLost(_)).Times(AnyNumber()); |
| 2422 | manager_.OnAckFrameStart(QuicPacketNumber(16), QuicTime::Delta::Infinite(), |
| 2423 | clock_.Now()); |
| 2424 | manager_.OnAckRange(QuicPacketNumber(15), QuicPacketNumber(17)); |
| 2425 | manager_.OnAckRange(QuicPacketNumber(10), QuicPacketNumber(12)); |
| 2426 | manager_.OnAckRange(QuicPacketNumber(5), QuicPacketNumber(7)); |
| 2427 | // Make sure empty range does not harm. |
| 2428 | manager_.OnAckRange(QuicPacketNumber(4), QuicPacketNumber(4)); |
| 2429 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 2430 | |
| 2431 | // Ack [4, 8), [9, 13), [14, 21). |
| 2432 | uint64_t acked2[] = {4, 7, 9, 12, 14, 17, 18, 19, 20}; |
| 2433 | ExpectAcksAndLosses(true, acked2, QUIC_ARRAYSIZE(acked2), nullptr, 0); |
| 2434 | manager_.OnAckFrameStart(QuicPacketNumber(20), QuicTime::Delta::Infinite(), |
| 2435 | clock_.Now()); |
| 2436 | manager_.OnAckRange(QuicPacketNumber(14), QuicPacketNumber(21)); |
| 2437 | manager_.OnAckRange(QuicPacketNumber(9), QuicPacketNumber(13)); |
| 2438 | manager_.OnAckRange(QuicPacketNumber(4), QuicPacketNumber(8)); |
| 2439 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 2440 | } |
| 2441 | |
QUICHE team | 9929cc4 | 2019-03-13 08:17:43 -0700 | [diff] [blame] | 2442 | TEST_P(QuicSentPacketManagerTest, TolerateReneging) { |
| 2443 | if (!manager_.tolerate_reneging()) { |
| 2444 | return; |
| 2445 | } |
| 2446 | // Send packets 1 - 20. |
| 2447 | for (size_t i = 1; i <= 20; ++i) { |
| 2448 | SendDataPacket(i); |
| 2449 | } |
| 2450 | // Ack [5, 7), [10, 12), [15, 17). |
| 2451 | uint64_t acked1[] = {5, 6, 10, 11, 15, 16}; |
| 2452 | uint64_t lost1[] = {1, 2, 3, 4, 7, 8, 9, 12, 13}; |
| 2453 | ExpectAcksAndLosses(true, acked1, QUIC_ARRAYSIZE(acked1), lost1, |
| 2454 | QUIC_ARRAYSIZE(lost1)); |
| 2455 | EXPECT_CALL(notifier_, OnFrameLost(_)).Times(AnyNumber()); |
| 2456 | manager_.OnAckFrameStart(QuicPacketNumber(16), QuicTime::Delta::Infinite(), |
| 2457 | clock_.Now()); |
| 2458 | manager_.OnAckRange(QuicPacketNumber(15), QuicPacketNumber(17)); |
| 2459 | manager_.OnAckRange(QuicPacketNumber(10), QuicPacketNumber(12)); |
| 2460 | manager_.OnAckRange(QuicPacketNumber(5), QuicPacketNumber(7)); |
| 2461 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 2462 | |
| 2463 | // Making sure reneged ACK does not harm. Ack [4, 8), [9, 13). |
| 2464 | uint64_t acked2[] = {4, 7, 9, 12}; |
| 2465 | ExpectAcksAndLosses(true, acked2, QUIC_ARRAYSIZE(acked2), nullptr, 0); |
| 2466 | manager_.OnAckFrameStart(QuicPacketNumber(12), QuicTime::Delta::Infinite(), |
| 2467 | clock_.Now()); |
| 2468 | manager_.OnAckRange(QuicPacketNumber(9), QuicPacketNumber(13)); |
| 2469 | manager_.OnAckRange(QuicPacketNumber(4), QuicPacketNumber(8)); |
| 2470 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 2471 | EXPECT_EQ(QuicPacketNumber(16), manager_.GetLargestObserved()); |
| 2472 | } |
| 2473 | |
QUICHE team | c279cec | 2019-03-22 06:51:48 -0700 | [diff] [blame^] | 2474 | TEST_P(QuicSentPacketManagerTest, MultiplePacketNumberSpaces) { |
| 2475 | if (!GetQuicReloadableFlag(quic_use_uber_loss_algorithm)) { |
| 2476 | return; |
| 2477 | } |
| 2478 | manager_.EnableMultiplePacketNumberSpacesSupport(); |
| 2479 | EXPECT_FALSE( |
| 2480 | manager_.GetLargestSentPacket(ENCRYPTION_INITIAL).IsInitialized()); |
| 2481 | EXPECT_FALSE( |
| 2482 | manager_.GetLargestAckedPacket(ENCRYPTION_INITIAL).IsInitialized()); |
| 2483 | // Send packet 1. |
| 2484 | SendDataPacket(1, ENCRYPTION_INITIAL); |
| 2485 | EXPECT_EQ(QuicPacketNumber(1), |
| 2486 | manager_.GetLargestSentPacket(ENCRYPTION_INITIAL)); |
| 2487 | EXPECT_FALSE( |
| 2488 | manager_.GetLargestSentPacket(ENCRYPTION_HANDSHAKE).IsInitialized()); |
| 2489 | // Ack packet 1. |
| 2490 | ExpectAck(1); |
| 2491 | manager_.OnAckFrameStart(QuicPacketNumber(1), QuicTime::Delta::Infinite(), |
| 2492 | clock_.Now()); |
| 2493 | manager_.OnAckRange(QuicPacketNumber(1), QuicPacketNumber(2)); |
| 2494 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 2495 | EXPECT_EQ(QuicPacketNumber(1), |
| 2496 | manager_.GetLargestAckedPacket(ENCRYPTION_INITIAL)); |
| 2497 | EXPECT_FALSE( |
| 2498 | manager_.GetLargestAckedPacket(ENCRYPTION_HANDSHAKE).IsInitialized()); |
| 2499 | // Send packets 2 and 3. |
| 2500 | SendDataPacket(2, ENCRYPTION_HANDSHAKE); |
| 2501 | SendDataPacket(3, ENCRYPTION_HANDSHAKE); |
| 2502 | EXPECT_EQ(QuicPacketNumber(1), |
| 2503 | manager_.GetLargestSentPacket(ENCRYPTION_INITIAL)); |
| 2504 | EXPECT_EQ(QuicPacketNumber(3), |
| 2505 | manager_.GetLargestSentPacket(ENCRYPTION_HANDSHAKE)); |
| 2506 | EXPECT_FALSE( |
| 2507 | manager_.GetLargestSentPacket(ENCRYPTION_ZERO_RTT).IsInitialized()); |
| 2508 | // Ack packet 2. |
| 2509 | ExpectAck(2); |
| 2510 | manager_.OnAckFrameStart(QuicPacketNumber(2), QuicTime::Delta::Infinite(), |
| 2511 | clock_.Now()); |
| 2512 | manager_.OnAckRange(QuicPacketNumber(2), QuicPacketNumber(3)); |
| 2513 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 2514 | EXPECT_EQ(QuicPacketNumber(2), |
| 2515 | manager_.GetLargestAckedPacket(ENCRYPTION_HANDSHAKE)); |
| 2516 | EXPECT_FALSE( |
| 2517 | manager_.GetLargestAckedPacket(ENCRYPTION_ZERO_RTT).IsInitialized()); |
| 2518 | // Ack packet 3. |
| 2519 | ExpectAck(3); |
| 2520 | manager_.OnAckFrameStart(QuicPacketNumber(3), QuicTime::Delta::Infinite(), |
| 2521 | clock_.Now()); |
| 2522 | manager_.OnAckRange(QuicPacketNumber(2), QuicPacketNumber(4)); |
| 2523 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 2524 | EXPECT_EQ(QuicPacketNumber(3), |
| 2525 | manager_.GetLargestAckedPacket(ENCRYPTION_HANDSHAKE)); |
| 2526 | EXPECT_FALSE( |
| 2527 | manager_.GetLargestAckedPacket(ENCRYPTION_ZERO_RTT).IsInitialized()); |
| 2528 | // Send packets 4 and 5. |
| 2529 | SendDataPacket(4, ENCRYPTION_ZERO_RTT); |
| 2530 | SendDataPacket(5, ENCRYPTION_ZERO_RTT); |
| 2531 | EXPECT_EQ(QuicPacketNumber(1), |
| 2532 | manager_.GetLargestSentPacket(ENCRYPTION_INITIAL)); |
| 2533 | EXPECT_EQ(QuicPacketNumber(3), |
| 2534 | manager_.GetLargestSentPacket(ENCRYPTION_HANDSHAKE)); |
| 2535 | EXPECT_EQ(QuicPacketNumber(5), |
| 2536 | manager_.GetLargestSentPacket(ENCRYPTION_ZERO_RTT)); |
| 2537 | EXPECT_EQ(QuicPacketNumber(5), |
| 2538 | manager_.GetLargestSentPacket(ENCRYPTION_FORWARD_SECURE)); |
| 2539 | // Ack packet 5. |
| 2540 | ExpectAck(5); |
| 2541 | manager_.OnAckFrameStart(QuicPacketNumber(5), QuicTime::Delta::Infinite(), |
| 2542 | clock_.Now()); |
| 2543 | manager_.OnAckRange(QuicPacketNumber(5), QuicPacketNumber(6)); |
| 2544 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 2545 | EXPECT_EQ(QuicPacketNumber(3), |
| 2546 | manager_.GetLargestAckedPacket(ENCRYPTION_HANDSHAKE)); |
| 2547 | EXPECT_EQ(QuicPacketNumber(5), |
| 2548 | manager_.GetLargestAckedPacket(ENCRYPTION_ZERO_RTT)); |
| 2549 | EXPECT_EQ(QuicPacketNumber(5), |
| 2550 | manager_.GetLargestAckedPacket(ENCRYPTION_FORWARD_SECURE)); |
| 2551 | |
| 2552 | // Send packets 6 - 8. |
| 2553 | SendDataPacket(6, ENCRYPTION_FORWARD_SECURE); |
| 2554 | SendDataPacket(7, ENCRYPTION_FORWARD_SECURE); |
| 2555 | SendDataPacket(8, ENCRYPTION_FORWARD_SECURE); |
| 2556 | EXPECT_EQ(QuicPacketNumber(1), |
| 2557 | manager_.GetLargestSentPacket(ENCRYPTION_INITIAL)); |
| 2558 | EXPECT_EQ(QuicPacketNumber(3), |
| 2559 | manager_.GetLargestSentPacket(ENCRYPTION_HANDSHAKE)); |
| 2560 | EXPECT_EQ(QuicPacketNumber(8), |
| 2561 | manager_.GetLargestSentPacket(ENCRYPTION_ZERO_RTT)); |
| 2562 | EXPECT_EQ(QuicPacketNumber(8), |
| 2563 | manager_.GetLargestSentPacket(ENCRYPTION_FORWARD_SECURE)); |
| 2564 | // Ack all packets. |
| 2565 | uint64_t acked[] = {4, 6, 7, 8}; |
| 2566 | ExpectAcksAndLosses(true, acked, QUIC_ARRAYSIZE(acked), nullptr, 0); |
| 2567 | manager_.OnAckFrameStart(QuicPacketNumber(8), QuicTime::Delta::Infinite(), |
| 2568 | clock_.Now()); |
| 2569 | manager_.OnAckRange(QuicPacketNumber(4), QuicPacketNumber(9)); |
| 2570 | EXPECT_TRUE(manager_.OnAckFrameEnd(clock_.Now())); |
| 2571 | EXPECT_EQ(QuicPacketNumber(3), |
| 2572 | manager_.GetLargestAckedPacket(ENCRYPTION_HANDSHAKE)); |
| 2573 | EXPECT_EQ(QuicPacketNumber(8), |
| 2574 | manager_.GetLargestAckedPacket(ENCRYPTION_ZERO_RTT)); |
| 2575 | EXPECT_EQ(QuicPacketNumber(8), |
| 2576 | manager_.GetLargestAckedPacket(ENCRYPTION_FORWARD_SECURE)); |
| 2577 | } |
| 2578 | |
QUICHE team | a6ef0a6 | 2019-03-07 20:34:33 -0500 | [diff] [blame] | 2579 | } // namespace |
| 2580 | } // namespace test |
| 2581 | } // namespace quic |