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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "net/quic/quic_packet_generator.h" | |
| 6 | |
| 7 #include <string> | |
| 8 | |
| 9 #include "net/quic/crypto/crypto_protocol.h" | |
| 10 #include "net/quic/crypto/null_encrypter.h" | |
| 11 #include "net/quic/crypto/quic_decrypter.h" | |
| 12 #include "net/quic/crypto/quic_encrypter.h" | |
| 13 #include "net/quic/quic_flags.h" | |
| 14 #include "net/quic/quic_utils.h" | |
| 15 #include "net/quic/test_tools/quic_packet_creator_peer.h" | |
| 16 #include "net/quic/test_tools/quic_packet_generator_peer.h" | |
| 17 #include "net/quic/test_tools/quic_test_utils.h" | |
| 18 #include "net/quic/test_tools/simple_quic_framer.h" | |
| 19 #include "net/test/gtest_util.h" | |
| 20 #include "testing/gmock/include/gmock/gmock.h" | |
| 21 #include "testing/gtest/include/gtest/gtest.h" | |
| 22 | |
| 23 using base::StringPiece; | |
| 24 using std::string; | |
| 25 using testing::InSequence; | |
| 26 using testing::Return; | |
| 27 using testing::SaveArg; | |
| 28 using testing::StrictMock; | |
| 29 using testing::_; | |
| 30 | |
| 31 namespace net { | |
| 32 namespace test { | |
| 33 namespace { | |
| 34 | |
| 35 const int64 kMinFecTimeoutMs = 5u; | |
| 36 | |
| 37 class MockDelegate : public QuicPacketGenerator::DelegateInterface { | |
| 38 public: | |
| 39 MockDelegate() {} | |
| 40 ~MockDelegate() override {} | |
| 41 | |
| 42 MOCK_METHOD3(ShouldGeneratePacket, | |
| 43 bool(TransmissionType transmission_type, | |
| 44 HasRetransmittableData retransmittable, | |
| 45 IsHandshake handshake)); | |
| 46 MOCK_METHOD1(PopulateAckFrame, void(QuicAckFrame*)); | |
| 47 MOCK_METHOD1(PopulateStopWaitingFrame, void(QuicStopWaitingFrame*)); | |
| 48 MOCK_METHOD1(OnSerializedPacket, void(const SerializedPacket& packet)); | |
| 49 MOCK_METHOD2(CloseConnection, void(QuicErrorCode, bool)); | |
| 50 | |
| 51 void SetCanWriteAnything() { | |
| 52 EXPECT_CALL(*this, ShouldGeneratePacket(NOT_RETRANSMISSION, _, _)) | |
| 53 .WillRepeatedly(Return(true)); | |
| 54 EXPECT_CALL(*this, ShouldGeneratePacket(NOT_RETRANSMISSION, | |
| 55 NO_RETRANSMITTABLE_DATA, _)) | |
| 56 .WillRepeatedly(Return(true)); | |
| 57 } | |
| 58 | |
| 59 void SetCanNotWrite() { | |
| 60 EXPECT_CALL(*this, ShouldGeneratePacket(NOT_RETRANSMISSION, _, _)) | |
| 61 .WillRepeatedly(Return(false)); | |
| 62 EXPECT_CALL(*this, ShouldGeneratePacket(NOT_RETRANSMISSION, | |
| 63 NO_RETRANSMITTABLE_DATA, _)) | |
| 64 .WillRepeatedly(Return(false)); | |
| 65 } | |
| 66 | |
| 67 // Use this when only ack frames should be allowed to be written. | |
| 68 void SetCanWriteOnlyNonRetransmittable() { | |
| 69 EXPECT_CALL(*this, ShouldGeneratePacket(NOT_RETRANSMISSION, _, _)) | |
| 70 .WillRepeatedly(Return(false)); | |
| 71 EXPECT_CALL(*this, ShouldGeneratePacket(NOT_RETRANSMISSION, | |
| 72 NO_RETRANSMITTABLE_DATA, _)) | |
| 73 .WillRepeatedly(Return(true)); | |
| 74 } | |
| 75 | |
| 76 private: | |
| 77 DISALLOW_COPY_AND_ASSIGN(MockDelegate); | |
| 78 }; | |
| 79 | |
| 80 // Simple struct for describing the contents of a packet. | |
| 81 // Useful in conjunction with a SimpleQuicFrame for validating that a packet | |
| 82 // contains the expected frames. | |
| 83 struct PacketContents { | |
| 84 PacketContents() | |
| 85 : num_ack_frames(0), | |
| 86 num_connection_close_frames(0), | |
| 87 num_goaway_frames(0), | |
| 88 num_rst_stream_frames(0), | |
| 89 num_stop_waiting_frames(0), | |
| 90 num_stream_frames(0), | |
| 91 fec_group(0) { | |
| 92 } | |
| 93 | |
| 94 size_t num_ack_frames; | |
| 95 size_t num_connection_close_frames; | |
| 96 size_t num_goaway_frames; | |
| 97 size_t num_rst_stream_frames; | |
| 98 size_t num_stop_waiting_frames; | |
| 99 size_t num_stream_frames; | |
| 100 | |
| 101 QuicFecGroupNumber fec_group; | |
| 102 }; | |
| 103 | |
| 104 } // namespace | |
| 105 | |
| 106 class QuicPacketGeneratorTest : public ::testing::Test { | |
| 107 protected: | |
| 108 QuicPacketGeneratorTest() | |
| 109 : framer_(QuicSupportedVersions(), QuicTime::Zero(), false), | |
| 110 generator_(42, &framer_, &random_, &delegate_), | |
| 111 creator_(QuicPacketGeneratorPeer::GetPacketCreator(&generator_)), | |
| 112 packet_(0, PACKET_1BYTE_SEQUENCE_NUMBER, nullptr, 0, nullptr), | |
| 113 packet2_(0, PACKET_1BYTE_SEQUENCE_NUMBER, nullptr, 0, nullptr), | |
| 114 packet3_(0, PACKET_1BYTE_SEQUENCE_NUMBER, nullptr, 0, nullptr), | |
| 115 packet4_(0, PACKET_1BYTE_SEQUENCE_NUMBER, nullptr, 0, nullptr), | |
| 116 packet5_(0, PACKET_1BYTE_SEQUENCE_NUMBER, nullptr, 0, nullptr), | |
| 117 packet6_(0, PACKET_1BYTE_SEQUENCE_NUMBER, nullptr, 0, nullptr), | |
| 118 packet7_(0, PACKET_1BYTE_SEQUENCE_NUMBER, nullptr, 0, nullptr), | |
| 119 packet8_(0, PACKET_1BYTE_SEQUENCE_NUMBER, nullptr, 0, nullptr) {} | |
| 120 | |
| 121 ~QuicPacketGeneratorTest() override { | |
| 122 delete packet_.packet; | |
| 123 delete packet_.retransmittable_frames; | |
| 124 delete packet2_.packet; | |
| 125 delete packet2_.retransmittable_frames; | |
| 126 delete packet3_.packet; | |
| 127 delete packet3_.retransmittable_frames; | |
| 128 delete packet4_.packet; | |
| 129 delete packet4_.retransmittable_frames; | |
| 130 delete packet5_.packet; | |
| 131 delete packet5_.retransmittable_frames; | |
| 132 delete packet6_.packet; | |
| 133 delete packet6_.retransmittable_frames; | |
| 134 delete packet7_.packet; | |
| 135 delete packet7_.retransmittable_frames; | |
| 136 delete packet8_.packet; | |
| 137 delete packet8_.retransmittable_frames; | |
| 138 } | |
| 139 | |
| 140 QuicRstStreamFrame* CreateRstStreamFrame() { | |
| 141 return new QuicRstStreamFrame(1, QUIC_STREAM_NO_ERROR, 0); | |
| 142 } | |
| 143 | |
| 144 QuicGoAwayFrame* CreateGoAwayFrame() { | |
| 145 return new QuicGoAwayFrame(QUIC_NO_ERROR, 1, string()); | |
| 146 } | |
| 147 | |
| 148 void CheckPacketContains(const PacketContents& contents, | |
| 149 const SerializedPacket& packet) { | |
| 150 size_t num_retransmittable_frames = contents.num_connection_close_frames + | |
| 151 contents.num_goaway_frames + contents.num_rst_stream_frames + | |
| 152 contents.num_stream_frames; | |
| 153 size_t num_frames = contents.num_ack_frames + | |
| 154 contents.num_stop_waiting_frames + | |
| 155 num_retransmittable_frames; | |
| 156 | |
| 157 if (num_retransmittable_frames == 0) { | |
| 158 ASSERT_TRUE(packet.retransmittable_frames == nullptr); | |
| 159 } else { | |
| 160 ASSERT_TRUE(packet.retransmittable_frames != nullptr); | |
| 161 EXPECT_EQ(num_retransmittable_frames, | |
| 162 packet.retransmittable_frames->frames().size()); | |
| 163 } | |
| 164 | |
| 165 ASSERT_TRUE(packet.packet != nullptr); | |
| 166 ASSERT_TRUE(simple_framer_.ProcessPacket(*packet.packet)); | |
| 167 EXPECT_EQ(num_frames, simple_framer_.num_frames()); | |
| 168 EXPECT_EQ(contents.num_ack_frames, simple_framer_.ack_frames().size()); | |
| 169 EXPECT_EQ(contents.num_connection_close_frames, | |
| 170 simple_framer_.connection_close_frames().size()); | |
| 171 EXPECT_EQ(contents.num_goaway_frames, | |
| 172 simple_framer_.goaway_frames().size()); | |
| 173 EXPECT_EQ(contents.num_rst_stream_frames, | |
| 174 simple_framer_.rst_stream_frames().size()); | |
| 175 EXPECT_EQ(contents.num_stream_frames, | |
| 176 simple_framer_.stream_frames().size()); | |
| 177 EXPECT_EQ(contents.num_stop_waiting_frames, | |
| 178 simple_framer_.stop_waiting_frames().size()); | |
| 179 EXPECT_EQ(contents.fec_group, simple_framer_.header().fec_group); | |
| 180 } | |
| 181 | |
| 182 void CheckPacketHasSingleStreamFrame(const SerializedPacket& packet) { | |
| 183 ASSERT_TRUE(packet.retransmittable_frames != nullptr); | |
| 184 EXPECT_EQ(1u, packet.retransmittable_frames->frames().size()); | |
| 185 ASSERT_TRUE(packet.packet != nullptr); | |
| 186 ASSERT_TRUE(simple_framer_.ProcessPacket(*packet.packet)); | |
| 187 EXPECT_EQ(1u, simple_framer_.num_frames()); | |
| 188 EXPECT_EQ(1u, simple_framer_.stream_frames().size()); | |
| 189 } | |
| 190 | |
| 191 void CheckPacketIsFec(const SerializedPacket& packet, | |
| 192 QuicPacketSequenceNumber fec_group) { | |
| 193 ASSERT_TRUE(packet.retransmittable_frames == nullptr); | |
| 194 ASSERT_TRUE(packet.packet != nullptr); | |
| 195 ASSERT_TRUE(simple_framer_.ProcessPacket(*packet.packet)); | |
| 196 EXPECT_TRUE(simple_framer_.header().fec_flag); | |
| 197 EXPECT_EQ(fec_group, simple_framer_.fec_data().fec_group); | |
| 198 } | |
| 199 | |
| 200 IOVector CreateData(size_t len) { | |
| 201 data_array_.reset(new char[len]); | |
| 202 memset(data_array_.get(), '?', len); | |
| 203 IOVector data; | |
| 204 data.Append(data_array_.get(), len); | |
| 205 return data; | |
| 206 } | |
| 207 | |
| 208 QuicFramer framer_; | |
| 209 MockRandom random_; | |
| 210 StrictMock<MockDelegate> delegate_; | |
| 211 QuicPacketGenerator generator_; | |
| 212 QuicPacketCreator* creator_; | |
| 213 SimpleQuicFramer simple_framer_; | |
| 214 SerializedPacket packet_; | |
| 215 SerializedPacket packet2_; | |
| 216 SerializedPacket packet3_; | |
| 217 SerializedPacket packet4_; | |
| 218 SerializedPacket packet5_; | |
| 219 SerializedPacket packet6_; | |
| 220 SerializedPacket packet7_; | |
| 221 SerializedPacket packet8_; | |
| 222 | |
| 223 private: | |
| 224 scoped_ptr<char[]> data_array_; | |
| 225 }; | |
| 226 | |
| 227 class MockDebugDelegate : public QuicPacketGenerator::DebugDelegate { | |
| 228 public: | |
| 229 MOCK_METHOD1(OnFrameAddedToPacket, | |
| 230 void(const QuicFrame&)); | |
| 231 }; | |
| 232 | |
| 233 TEST_F(QuicPacketGeneratorTest, ShouldSendAck_NotWritable) { | |
| 234 delegate_.SetCanNotWrite(); | |
| 235 | |
| 236 generator_.SetShouldSendAck(false); | |
| 237 EXPECT_TRUE(generator_.HasQueuedFrames()); | |
| 238 } | |
| 239 | |
| 240 TEST_F(QuicPacketGeneratorTest, ShouldSendAck_WritableAndShouldNotFlush) { | |
| 241 StrictMock<MockDebugDelegate> debug_delegate; | |
| 242 | |
| 243 generator_.set_debug_delegate(&debug_delegate); | |
| 244 delegate_.SetCanWriteOnlyNonRetransmittable(); | |
| 245 generator_.StartBatchOperations(); | |
| 246 | |
| 247 EXPECT_CALL(delegate_, PopulateAckFrame(_)); | |
| 248 EXPECT_CALL(debug_delegate, OnFrameAddedToPacket(_)).Times(1); | |
| 249 | |
| 250 generator_.SetShouldSendAck(false); | |
| 251 EXPECT_TRUE(generator_.HasQueuedFrames()); | |
| 252 } | |
| 253 | |
| 254 TEST_F(QuicPacketGeneratorTest, ShouldSendAck_WritableAndShouldFlush) { | |
| 255 delegate_.SetCanWriteOnlyNonRetransmittable(); | |
| 256 | |
| 257 EXPECT_CALL(delegate_, PopulateAckFrame(_)); | |
| 258 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce(SaveArg<0>(&packet_)); | |
| 259 | |
| 260 generator_.SetShouldSendAck(false); | |
| 261 EXPECT_FALSE(generator_.HasQueuedFrames()); | |
| 262 | |
| 263 PacketContents contents; | |
| 264 contents.num_ack_frames = 1; | |
| 265 CheckPacketContains(contents, packet_); | |
| 266 } | |
| 267 | |
| 268 TEST_F(QuicPacketGeneratorTest, ShouldSendAck_MultipleCalls) { | |
| 269 // Make sure that calling SetShouldSendAck multiple times does not result in a | |
| 270 // crash. Previously this would result in multiple QuicFrames queued in the | |
| 271 // packet generator, with all but the last with internal pointers to freed | |
| 272 // memory. | |
| 273 delegate_.SetCanWriteAnything(); | |
| 274 | |
| 275 // Only one AckFrame should be created. | |
| 276 EXPECT_CALL(delegate_, PopulateAckFrame(_)).Times(1); | |
| 277 EXPECT_CALL(delegate_, OnSerializedPacket(_)) | |
| 278 .Times(1) | |
| 279 .WillOnce(SaveArg<0>(&packet_)); | |
| 280 | |
| 281 generator_.StartBatchOperations(); | |
| 282 generator_.SetShouldSendAck(false); | |
| 283 generator_.SetShouldSendAck(false); | |
| 284 generator_.FinishBatchOperations(); | |
| 285 } | |
| 286 | |
| 287 TEST_F(QuicPacketGeneratorTest, AddControlFrame_NotWritable) { | |
| 288 delegate_.SetCanNotWrite(); | |
| 289 | |
| 290 generator_.AddControlFrame(QuicFrame(CreateRstStreamFrame())); | |
| 291 EXPECT_TRUE(generator_.HasQueuedFrames()); | |
| 292 } | |
| 293 | |
| 294 TEST_F(QuicPacketGeneratorTest, AddControlFrame_OnlyAckWritable) { | |
| 295 delegate_.SetCanWriteOnlyNonRetransmittable(); | |
| 296 | |
| 297 generator_.AddControlFrame(QuicFrame(CreateRstStreamFrame())); | |
| 298 EXPECT_TRUE(generator_.HasQueuedFrames()); | |
| 299 } | |
| 300 | |
| 301 TEST_F(QuicPacketGeneratorTest, AddControlFrame_WritableAndShouldNotFlush) { | |
| 302 delegate_.SetCanWriteAnything(); | |
| 303 generator_.StartBatchOperations(); | |
| 304 | |
| 305 generator_.AddControlFrame(QuicFrame(CreateRstStreamFrame())); | |
| 306 EXPECT_TRUE(generator_.HasQueuedFrames()); | |
| 307 } | |
| 308 | |
| 309 TEST_F(QuicPacketGeneratorTest, AddControlFrame_NotWritableBatchThenFlush) { | |
| 310 delegate_.SetCanNotWrite(); | |
| 311 generator_.StartBatchOperations(); | |
| 312 | |
| 313 generator_.AddControlFrame(QuicFrame(CreateRstStreamFrame())); | |
| 314 EXPECT_TRUE(generator_.HasQueuedFrames()); | |
| 315 generator_.FinishBatchOperations(); | |
| 316 EXPECT_TRUE(generator_.HasQueuedFrames()); | |
| 317 | |
| 318 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce(SaveArg<0>(&packet_)); | |
| 319 generator_.FlushAllQueuedFrames(); | |
| 320 EXPECT_FALSE(generator_.HasQueuedFrames()); | |
| 321 | |
| 322 PacketContents contents; | |
| 323 contents.num_rst_stream_frames = 1; | |
| 324 CheckPacketContains(contents, packet_); | |
| 325 } | |
| 326 | |
| 327 TEST_F(QuicPacketGeneratorTest, AddControlFrame_WritableAndShouldFlush) { | |
| 328 delegate_.SetCanWriteAnything(); | |
| 329 | |
| 330 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce(SaveArg<0>(&packet_)); | |
| 331 | |
| 332 generator_.AddControlFrame(QuicFrame(CreateRstStreamFrame())); | |
| 333 EXPECT_FALSE(generator_.HasQueuedFrames()); | |
| 334 | |
| 335 PacketContents contents; | |
| 336 contents.num_rst_stream_frames = 1; | |
| 337 CheckPacketContains(contents, packet_); | |
| 338 } | |
| 339 | |
| 340 TEST_F(QuicPacketGeneratorTest, ConsumeData_NotWritable) { | |
| 341 delegate_.SetCanNotWrite(); | |
| 342 | |
| 343 QuicConsumedData consumed = generator_.ConsumeData( | |
| 344 kHeadersStreamId, MakeIOVector("foo"), 2, true, MAY_FEC_PROTECT, nullptr); | |
| 345 EXPECT_EQ(0u, consumed.bytes_consumed); | |
| 346 EXPECT_FALSE(consumed.fin_consumed); | |
| 347 EXPECT_FALSE(generator_.HasQueuedFrames()); | |
| 348 } | |
| 349 | |
| 350 TEST_F(QuicPacketGeneratorTest, ConsumeData_WritableAndShouldNotFlush) { | |
| 351 delegate_.SetCanWriteAnything(); | |
| 352 generator_.StartBatchOperations(); | |
| 353 | |
| 354 QuicConsumedData consumed = generator_.ConsumeData( | |
| 355 kHeadersStreamId, MakeIOVector("foo"), 2, true, MAY_FEC_PROTECT, nullptr); | |
| 356 EXPECT_EQ(3u, consumed.bytes_consumed); | |
| 357 EXPECT_TRUE(consumed.fin_consumed); | |
| 358 EXPECT_TRUE(generator_.HasQueuedFrames()); | |
| 359 } | |
| 360 | |
| 361 TEST_F(QuicPacketGeneratorTest, ConsumeData_WritableAndShouldFlush) { | |
| 362 delegate_.SetCanWriteAnything(); | |
| 363 | |
| 364 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce(SaveArg<0>(&packet_)); | |
| 365 QuicConsumedData consumed = generator_.ConsumeData( | |
| 366 kHeadersStreamId, MakeIOVector("foo"), 2, true, MAY_FEC_PROTECT, nullptr); | |
| 367 EXPECT_EQ(3u, consumed.bytes_consumed); | |
| 368 EXPECT_TRUE(consumed.fin_consumed); | |
| 369 EXPECT_FALSE(generator_.HasQueuedFrames()); | |
| 370 | |
| 371 PacketContents contents; | |
| 372 contents.num_stream_frames = 1; | |
| 373 CheckPacketContains(contents, packet_); | |
| 374 } | |
| 375 | |
| 376 TEST_F(QuicPacketGeneratorTest, ConsumeData_EmptyData) { | |
| 377 EXPECT_DFATAL(generator_.ConsumeData(kHeadersStreamId, MakeIOVector(""), 0, | |
| 378 false, MAY_FEC_PROTECT, nullptr), | |
| 379 "Attempt to consume empty data without FIN."); | |
| 380 } | |
| 381 | |
| 382 TEST_F(QuicPacketGeneratorTest, | |
| 383 ConsumeDataMultipleTimes_WritableAndShouldNotFlush) { | |
| 384 delegate_.SetCanWriteAnything(); | |
| 385 generator_.StartBatchOperations(); | |
| 386 | |
| 387 generator_.ConsumeData(kHeadersStreamId, MakeIOVector("foo"), 2, true, | |
| 388 MAY_FEC_PROTECT, nullptr); | |
| 389 QuicConsumedData consumed = generator_.ConsumeData( | |
| 390 3, MakeIOVector("quux"), 7, false, MAY_FEC_PROTECT, nullptr); | |
| 391 EXPECT_EQ(4u, consumed.bytes_consumed); | |
| 392 EXPECT_FALSE(consumed.fin_consumed); | |
| 393 EXPECT_TRUE(generator_.HasQueuedFrames()); | |
| 394 } | |
| 395 | |
| 396 TEST_F(QuicPacketGeneratorTest, ConsumeData_BatchOperations) { | |
| 397 delegate_.SetCanWriteAnything(); | |
| 398 generator_.StartBatchOperations(); | |
| 399 | |
| 400 generator_.ConsumeData(kHeadersStreamId, MakeIOVector("foo"), 2, true, | |
| 401 MAY_FEC_PROTECT, nullptr); | |
| 402 QuicConsumedData consumed = generator_.ConsumeData( | |
| 403 3, MakeIOVector("quux"), 7, false, MAY_FEC_PROTECT, nullptr); | |
| 404 EXPECT_EQ(4u, consumed.bytes_consumed); | |
| 405 EXPECT_FALSE(consumed.fin_consumed); | |
| 406 EXPECT_TRUE(generator_.HasQueuedFrames()); | |
| 407 | |
| 408 // Now both frames will be flushed out. | |
| 409 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce(SaveArg<0>(&packet_)); | |
| 410 generator_.FinishBatchOperations(); | |
| 411 EXPECT_FALSE(generator_.HasQueuedFrames()); | |
| 412 | |
| 413 PacketContents contents; | |
| 414 contents.num_stream_frames = 2; | |
| 415 CheckPacketContains(contents, packet_); | |
| 416 } | |
| 417 | |
| 418 TEST_F(QuicPacketGeneratorTest, ConsumeDataSendsFecOnMaxGroupSize) { | |
| 419 delegate_.SetCanWriteAnything(); | |
| 420 | |
| 421 // Send FEC every two packets. | |
| 422 creator_->set_max_packets_per_fec_group(2); | |
| 423 | |
| 424 { | |
| 425 InSequence dummy; | |
| 426 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 427 SaveArg<0>(&packet_)); | |
| 428 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 429 SaveArg<0>(&packet2_)); | |
| 430 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 431 SaveArg<0>(&packet3_)); | |
| 432 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 433 SaveArg<0>(&packet4_)); | |
| 434 } | |
| 435 | |
| 436 // Send enough data to create 3 packets: two full and one partial. Send with | |
| 437 // MUST_FEC_PROTECT flag. | |
| 438 size_t data_len = 2 * kDefaultMaxPacketSize + 100; | |
| 439 QuicConsumedData consumed = generator_.ConsumeData( | |
| 440 3, CreateData(data_len), 0, true, MUST_FEC_PROTECT, nullptr); | |
| 441 EXPECT_EQ(data_len, consumed.bytes_consumed); | |
| 442 EXPECT_TRUE(consumed.fin_consumed); | |
| 443 EXPECT_FALSE(generator_.HasQueuedFrames()); | |
| 444 | |
| 445 CheckPacketHasSingleStreamFrame(packet_); | |
| 446 CheckPacketHasSingleStreamFrame(packet2_); | |
| 447 CheckPacketIsFec(packet3_, 1); | |
| 448 CheckPacketHasSingleStreamFrame(packet4_); | |
| 449 EXPECT_TRUE(creator_->IsFecProtected()); | |
| 450 | |
| 451 // The FEC packet under construction will be sent when one more packet is sent | |
| 452 // (since FEC group size is 2), or when OnFecTimeout is called. Send more data | |
| 453 // with MAY_FEC_PROTECT. This packet should also be protected, and FEC packet | |
| 454 // is sent since FEC group size is reached. | |
| 455 { | |
| 456 InSequence dummy; | |
| 457 EXPECT_CALL(delegate_, OnSerializedPacket(_)) | |
| 458 .WillOnce(SaveArg<0>(&packet5_)); | |
| 459 EXPECT_CALL(delegate_, OnSerializedPacket(_)) | |
| 460 .WillOnce(SaveArg<0>(&packet6_)); | |
| 461 } | |
| 462 consumed = generator_.ConsumeData(5, CreateData(1u), 0, true, MAY_FEC_PROTECT, | |
| 463 nullptr); | |
| 464 EXPECT_EQ(1u, consumed.bytes_consumed); | |
| 465 CheckPacketHasSingleStreamFrame(packet5_); | |
| 466 CheckPacketIsFec(packet6_, 4); | |
| 467 EXPECT_FALSE(creator_->IsFecProtected()); | |
| 468 } | |
| 469 | |
| 470 TEST_F(QuicPacketGeneratorTest, ConsumeDataSendsFecOnTimeout) { | |
| 471 delegate_.SetCanWriteAnything(); | |
| 472 creator_->set_max_packets_per_fec_group(1000); | |
| 473 | |
| 474 // Send data with MUST_FEC_PROTECT flag. No FEC packet is emitted, but the | |
| 475 // creator FEC protects all data. | |
| 476 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce(SaveArg<0>(&packet_)); | |
| 477 QuicConsumedData consumed = generator_.ConsumeData(3, CreateData(1u), 0, true, | |
| 478 MUST_FEC_PROTECT, nullptr); | |
| 479 EXPECT_EQ(1u, consumed.bytes_consumed); | |
| 480 EXPECT_TRUE(consumed.fin_consumed); | |
| 481 CheckPacketHasSingleStreamFrame(packet_); | |
| 482 EXPECT_TRUE(creator_->IsFecProtected()); | |
| 483 | |
| 484 // Send more data with MAY_FEC_PROTECT. This packet should also be protected, | |
| 485 // and FEC packet is not yet sent. | |
| 486 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce(SaveArg<0>(&packet2_)); | |
| 487 consumed = generator_.ConsumeData(5, CreateData(1u), 0, true, MAY_FEC_PROTECT, | |
| 488 nullptr); | |
| 489 EXPECT_EQ(1u, consumed.bytes_consumed); | |
| 490 CheckPacketHasSingleStreamFrame(packet2_); | |
| 491 EXPECT_TRUE(creator_->IsFecProtected()); | |
| 492 | |
| 493 // Calling OnFecTimeout should cause the FEC packet to be emitted. | |
| 494 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce(SaveArg<0>(&packet3_)); | |
| 495 generator_.OnFecTimeout(); | |
| 496 CheckPacketIsFec(packet3_, 1); | |
| 497 EXPECT_FALSE(creator_->IsFecProtected()); | |
| 498 | |
| 499 // Subsequent data is protected under the next FEC group. Send enough data to | |
| 500 // create 2 more packets: one full and one partial. | |
| 501 { | |
| 502 InSequence dummy; | |
| 503 EXPECT_CALL(delegate_, OnSerializedPacket(_)) | |
| 504 .WillOnce(SaveArg<0>(&packet4_)); | |
| 505 EXPECT_CALL(delegate_, OnSerializedPacket(_)) | |
| 506 .WillOnce(SaveArg<0>(&packet5_)); | |
| 507 } | |
| 508 size_t data_len = kDefaultMaxPacketSize + 1; | |
| 509 consumed = generator_.ConsumeData(7, CreateData(data_len), 0, true, | |
| 510 MUST_FEC_PROTECT, nullptr); | |
| 511 EXPECT_EQ(data_len, consumed.bytes_consumed); | |
| 512 EXPECT_TRUE(consumed.fin_consumed); | |
| 513 CheckPacketHasSingleStreamFrame(packet4_); | |
| 514 CheckPacketHasSingleStreamFrame(packet5_); | |
| 515 EXPECT_TRUE(creator_->IsFecProtected()); | |
| 516 | |
| 517 // Calling OnFecTimeout should cause the FEC packet to be emitted. | |
| 518 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce(SaveArg<0>(&packet6_)); | |
| 519 generator_.OnFecTimeout(); | |
| 520 CheckPacketIsFec(packet6_, 4); | |
| 521 EXPECT_FALSE(creator_->IsFecProtected()); | |
| 522 } | |
| 523 | |
| 524 TEST_F(QuicPacketGeneratorTest, GetFecTimeoutFiniteOnlyOnFirstPacketInGroup) { | |
| 525 delegate_.SetCanWriteAnything(); | |
| 526 creator_->set_max_packets_per_fec_group(6); | |
| 527 | |
| 528 // Send enough data to create 2 packets: one full and one partial. Send with | |
| 529 // MUST_FEC_PROTECT flag. No FEC packet is emitted yet, but the creator FEC | |
| 530 // protects all data. | |
| 531 { | |
| 532 InSequence dummy; | |
| 533 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 534 SaveArg<0>(&packet_)); | |
| 535 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 536 SaveArg<0>(&packet2_)); | |
| 537 } | |
| 538 size_t data_len = 1 * kDefaultMaxPacketSize + 100; | |
| 539 QuicConsumedData consumed = generator_.ConsumeData( | |
| 540 3, CreateData(data_len), 0, true, MUST_FEC_PROTECT, nullptr); | |
| 541 EXPECT_EQ(data_len, consumed.bytes_consumed); | |
| 542 EXPECT_TRUE(consumed.fin_consumed); | |
| 543 EXPECT_FALSE(generator_.HasQueuedFrames()); | |
| 544 CheckPacketHasSingleStreamFrame(packet_); | |
| 545 CheckPacketHasSingleStreamFrame(packet2_); | |
| 546 EXPECT_TRUE(creator_->IsFecProtected()); | |
| 547 | |
| 548 // GetFecTimeout returns finite timeout only for first packet in group. | |
| 549 EXPECT_EQ(QuicTime::Delta::FromMilliseconds(kMinFecTimeoutMs), | |
| 550 generator_.GetFecTimeout(/*sequence_number=*/1u)); | |
| 551 EXPECT_EQ(QuicTime::Delta::Infinite(), | |
| 552 generator_.GetFecTimeout(/*sequence_number=*/2u)); | |
| 553 | |
| 554 // Send more data with MAY_FEC_PROTECT. This packet should also be protected, | |
| 555 // and FEC packet is not yet sent. | |
| 556 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce(SaveArg<0>(&packet3_)); | |
| 557 consumed = generator_.ConsumeData(5, CreateData(1u), 0, true, MAY_FEC_PROTECT, | |
| 558 nullptr); | |
| 559 CheckPacketHasSingleStreamFrame(packet3_); | |
| 560 EXPECT_TRUE(creator_->IsFecProtected()); | |
| 561 | |
| 562 // GetFecTimeout returns finite timeout only for first packet in group. | |
| 563 EXPECT_EQ(QuicTime::Delta::Infinite(), | |
| 564 generator_.GetFecTimeout(/*sequence_number=*/3u)); | |
| 565 | |
| 566 // Calling OnFecTimeout should cause the FEC packet to be emitted. | |
| 567 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce(SaveArg<0>(&packet4_)); | |
| 568 generator_.OnFecTimeout(); | |
| 569 CheckPacketIsFec(packet4_, /*fec_group=*/1u); | |
| 570 EXPECT_FALSE(creator_->IsFecProtected()); | |
| 571 | |
| 572 // Subsequent data is protected under the next FEC group. Send enough data to | |
| 573 // create 2 more packets: one full and one partial. | |
| 574 { | |
| 575 InSequence dummy; | |
| 576 EXPECT_CALL(delegate_, OnSerializedPacket(_)) | |
| 577 .WillOnce(SaveArg<0>(&packet5_)); | |
| 578 EXPECT_CALL(delegate_, OnSerializedPacket(_)) | |
| 579 .WillOnce(SaveArg<0>(&packet6_)); | |
| 580 } | |
| 581 data_len = kDefaultMaxPacketSize + 1u; | |
| 582 consumed = generator_.ConsumeData(7, CreateData(data_len), 0, true, | |
| 583 MUST_FEC_PROTECT, nullptr); | |
| 584 EXPECT_EQ(data_len, consumed.bytes_consumed); | |
| 585 EXPECT_TRUE(consumed.fin_consumed); | |
| 586 CheckPacketHasSingleStreamFrame(packet5_); | |
| 587 CheckPacketHasSingleStreamFrame(packet6_); | |
| 588 EXPECT_TRUE(creator_->IsFecProtected()); | |
| 589 | |
| 590 // GetFecTimeout returns finite timeout for first packet in the new group. | |
| 591 EXPECT_EQ(QuicTime::Delta::FromMilliseconds(kMinFecTimeoutMs), | |
| 592 generator_.GetFecTimeout(/*sequence_number=*/5u)); | |
| 593 EXPECT_EQ(QuicTime::Delta::Infinite(), | |
| 594 generator_.GetFecTimeout(/*sequence_number=*/6u)); | |
| 595 | |
| 596 // Calling OnFecTimeout should cause the FEC packet to be emitted. | |
| 597 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce(SaveArg<0>(&packet7_)); | |
| 598 generator_.OnFecTimeout(); | |
| 599 CheckPacketIsFec(packet7_, /*fec_group=*/5u); | |
| 600 EXPECT_FALSE(creator_->IsFecProtected()); | |
| 601 | |
| 602 // Send more data with MAY_FEC_PROTECT. No FEC protection, so GetFecTimeout | |
| 603 // returns infinite. | |
| 604 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce(SaveArg<0>(&packet8_)); | |
| 605 consumed = generator_.ConsumeData(9, CreateData(1u), 0, true, MAY_FEC_PROTECT, | |
| 606 nullptr); | |
| 607 CheckPacketHasSingleStreamFrame(packet8_); | |
| 608 EXPECT_FALSE(creator_->IsFecProtected()); | |
| 609 EXPECT_EQ(QuicTime::Delta::Infinite(), | |
| 610 generator_.GetFecTimeout(/*sequence_number=*/8u)); | |
| 611 } | |
| 612 | |
| 613 TEST_F(QuicPacketGeneratorTest, ConsumeData_FramesPreviouslyQueued) { | |
| 614 // Set the packet size be enough for two stream frames with 0 stream offset, | |
| 615 // but not enough for a stream frame of 0 offset and one with non-zero offset. | |
| 616 size_t length = | |
| 617 NullEncrypter().GetCiphertextSize(0) + | |
| 618 GetPacketHeaderSize(creator_->connection_id_length(), true, | |
| 619 creator_->next_sequence_number_length(), | |
| 620 NOT_IN_FEC_GROUP) + | |
| 621 // Add an extra 3 bytes for the payload and 1 byte so BytesFree is larger | |
| 622 // than the GetMinStreamFrameSize. | |
| 623 QuicFramer::GetMinStreamFrameSize(1, 0, false, NOT_IN_FEC_GROUP) + 3 + | |
| 624 QuicFramer::GetMinStreamFrameSize(1, 0, true, NOT_IN_FEC_GROUP) + 1; | |
| 625 creator_->set_max_packet_length(length); | |
| 626 delegate_.SetCanWriteAnything(); | |
| 627 { | |
| 628 InSequence dummy; | |
| 629 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 630 SaveArg<0>(&packet_)); | |
| 631 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 632 SaveArg<0>(&packet2_)); | |
| 633 } | |
| 634 generator_.StartBatchOperations(); | |
| 635 // Queue enough data to prevent a stream frame with a non-zero offset from | |
| 636 // fitting. | |
| 637 QuicConsumedData consumed = | |
| 638 generator_.ConsumeData(kHeadersStreamId, MakeIOVector("foo"), 0, false, | |
| 639 MAY_FEC_PROTECT, nullptr); | |
| 640 EXPECT_EQ(3u, consumed.bytes_consumed); | |
| 641 EXPECT_FALSE(consumed.fin_consumed); | |
| 642 EXPECT_TRUE(generator_.HasQueuedFrames()); | |
| 643 | |
| 644 // This frame will not fit with the existing frame, causing the queued frame | |
| 645 // to be serialized, and it will not fit with another frame like it, so it is | |
| 646 // serialized by itself. | |
| 647 consumed = generator_.ConsumeData(kHeadersStreamId, MakeIOVector("bar"), 3, | |
| 648 true, MAY_FEC_PROTECT, nullptr); | |
| 649 EXPECT_EQ(3u, consumed.bytes_consumed); | |
| 650 EXPECT_TRUE(consumed.fin_consumed); | |
| 651 EXPECT_FALSE(generator_.HasQueuedFrames()); | |
| 652 | |
| 653 PacketContents contents; | |
| 654 contents.num_stream_frames = 1; | |
| 655 CheckPacketContains(contents, packet_); | |
| 656 CheckPacketContains(contents, packet2_); | |
| 657 } | |
| 658 | |
| 659 TEST_F(QuicPacketGeneratorTest, NoFecPacketSentWhenBatchEnds) { | |
| 660 delegate_.SetCanWriteAnything(); | |
| 661 creator_->set_max_packets_per_fec_group(6); | |
| 662 | |
| 663 generator_.StartBatchOperations(); | |
| 664 | |
| 665 generator_.ConsumeData(3, MakeIOVector("foo"), 2, true, MUST_FEC_PROTECT, | |
| 666 nullptr); | |
| 667 QuicConsumedData consumed = generator_.ConsumeData( | |
| 668 5, MakeIOVector("quux"), 7, false, MUST_FEC_PROTECT, nullptr); | |
| 669 EXPECT_EQ(4u, consumed.bytes_consumed); | |
| 670 EXPECT_FALSE(consumed.fin_consumed); | |
| 671 EXPECT_TRUE(generator_.HasQueuedFrames()); | |
| 672 | |
| 673 // Now both frames will be flushed out, but FEC packet is not yet sent. | |
| 674 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce(SaveArg<0>(&packet_)); | |
| 675 generator_.FinishBatchOperations(); | |
| 676 EXPECT_FALSE(generator_.HasQueuedFrames()); | |
| 677 | |
| 678 PacketContents contents; | |
| 679 contents.num_stream_frames = 2u; | |
| 680 contents.fec_group = 1u; | |
| 681 CheckPacketContains(contents, packet_); | |
| 682 | |
| 683 // Forcing FEC timeout causes FEC packet to be emitted. | |
| 684 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce(SaveArg<0>(&packet2_)); | |
| 685 generator_.OnFecTimeout(); | |
| 686 CheckPacketIsFec(packet2_, /*fec_group=*/1u); | |
| 687 } | |
| 688 | |
| 689 TEST_F(QuicPacketGeneratorTest, FecTimeoutOnRttChange) { | |
| 690 EXPECT_EQ(QuicTime::Delta::Zero(), | |
| 691 QuicPacketGeneratorPeer::GetFecTimeout(&generator_)); | |
| 692 generator_.OnRttChange(QuicTime::Delta::FromMilliseconds(300)); | |
| 693 EXPECT_EQ(QuicTime::Delta::FromMilliseconds(150), | |
| 694 QuicPacketGeneratorPeer::GetFecTimeout(&generator_)); | |
| 695 } | |
| 696 | |
| 697 TEST_F(QuicPacketGeneratorTest, FecGroupSizeOnCongestionWindowChange) { | |
| 698 delegate_.SetCanWriteAnything(); | |
| 699 creator_->set_max_packets_per_fec_group(50); | |
| 700 EXPECT_EQ(50u, creator_->max_packets_per_fec_group()); | |
| 701 EXPECT_FALSE(creator_->IsFecGroupOpen()); | |
| 702 | |
| 703 // On reduced cwnd. | |
| 704 generator_.OnCongestionWindowChange(7); | |
| 705 EXPECT_EQ(3u, creator_->max_packets_per_fec_group()); | |
| 706 | |
| 707 // On increased cwnd. | |
| 708 generator_.OnCongestionWindowChange(100); | |
| 709 EXPECT_EQ(50u, creator_->max_packets_per_fec_group()); | |
| 710 | |
| 711 // On collapsed cwnd. | |
| 712 generator_.OnCongestionWindowChange(1); | |
| 713 EXPECT_EQ(2u, creator_->max_packets_per_fec_group()); | |
| 714 } | |
| 715 | |
| 716 TEST_F(QuicPacketGeneratorTest, FecGroupSizeChangeWithOpenGroup) { | |
| 717 delegate_.SetCanWriteAnything(); | |
| 718 generator_.StartBatchOperations(); | |
| 719 creator_->set_max_packets_per_fec_group(50); | |
| 720 EXPECT_EQ(50u, creator_->max_packets_per_fec_group()); | |
| 721 EXPECT_FALSE(creator_->IsFecGroupOpen()); | |
| 722 | |
| 723 // Send enough data to create 4 packets with MUST_FEC_PROTECT flag. 3 packets | |
| 724 // are sent, one is queued in the creator. | |
| 725 { | |
| 726 InSequence dummy; | |
| 727 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 728 SaveArg<0>(&packet_)); | |
| 729 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 730 SaveArg<0>(&packet2_)); | |
| 731 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 732 SaveArg<0>(&packet3_)); | |
| 733 } | |
| 734 size_t data_len = 3 * kDefaultMaxPacketSize + 1; | |
| 735 QuicConsumedData consumed = generator_.ConsumeData( | |
| 736 7, CreateData(data_len), 0, true, MUST_FEC_PROTECT, nullptr); | |
| 737 EXPECT_EQ(data_len, consumed.bytes_consumed); | |
| 738 EXPECT_TRUE(creator_->IsFecGroupOpen()); | |
| 739 | |
| 740 // Change FEC groupsize. | |
| 741 generator_.OnCongestionWindowChange(2); | |
| 742 EXPECT_EQ(2u, creator_->max_packets_per_fec_group()); | |
| 743 | |
| 744 // Send enough data to trigger one unprotected data packet, causing the FEC | |
| 745 // packet to also be sent. | |
| 746 { | |
| 747 InSequence dummy; | |
| 748 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 749 SaveArg<0>(&packet4_)); | |
| 750 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 751 SaveArg<0>(&packet5_)); | |
| 752 } | |
| 753 consumed = generator_.ConsumeData(7, CreateData(kDefaultMaxPacketSize), 0, | |
| 754 true, MAY_FEC_PROTECT, nullptr); | |
| 755 EXPECT_EQ(kDefaultMaxPacketSize, consumed.bytes_consumed); | |
| 756 // Verify that one FEC packet was sent. | |
| 757 CheckPacketIsFec(packet5_, /*fec_group=*/1u); | |
| 758 EXPECT_FALSE(creator_->IsFecGroupOpen()); | |
| 759 EXPECT_FALSE(creator_->IsFecProtected()); | |
| 760 } | |
| 761 | |
| 762 TEST_F(QuicPacketGeneratorTest, SwitchFecOnOff) { | |
| 763 delegate_.SetCanWriteAnything(); | |
| 764 creator_->set_max_packets_per_fec_group(2); | |
| 765 EXPECT_FALSE(creator_->IsFecProtected()); | |
| 766 | |
| 767 // Send one unprotected data packet. | |
| 768 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 769 SaveArg<0>(&packet_)); | |
| 770 QuicConsumedData consumed = generator_.ConsumeData(5, CreateData(1u), 0, true, | |
| 771 MAY_FEC_PROTECT, nullptr); | |
| 772 EXPECT_EQ(1u, consumed.bytes_consumed); | |
| 773 EXPECT_FALSE(generator_.HasQueuedFrames()); | |
| 774 EXPECT_FALSE(creator_->IsFecProtected()); | |
| 775 // Verify that one data packet was sent. | |
| 776 PacketContents contents; | |
| 777 contents.num_stream_frames = 1; | |
| 778 CheckPacketContains(contents, packet_); | |
| 779 | |
| 780 { | |
| 781 InSequence dummy; | |
| 782 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 783 SaveArg<0>(&packet2_)); | |
| 784 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 785 SaveArg<0>(&packet3_)); | |
| 786 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 787 SaveArg<0>(&packet4_)); | |
| 788 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 789 SaveArg<0>(&packet5_)); | |
| 790 } | |
| 791 // Send enough data to create 3 packets with MUST_FEC_PROTECT flag. | |
| 792 size_t data_len = 2 * kDefaultMaxPacketSize + 100; | |
| 793 consumed = generator_.ConsumeData(7, CreateData(data_len), 0, true, | |
| 794 MUST_FEC_PROTECT, nullptr); | |
| 795 EXPECT_EQ(data_len, consumed.bytes_consumed); | |
| 796 EXPECT_FALSE(generator_.HasQueuedFrames()); | |
| 797 | |
| 798 // Verify that packets sent were 3 data and 1 FEC. | |
| 799 CheckPacketHasSingleStreamFrame(packet2_); | |
| 800 CheckPacketHasSingleStreamFrame(packet3_); | |
| 801 CheckPacketIsFec(packet4_, /*fec_group=*/2u); | |
| 802 CheckPacketHasSingleStreamFrame(packet5_); | |
| 803 | |
| 804 // Calling OnFecTimeout should emit the pending FEC packet. | |
| 805 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce(SaveArg<0>(&packet6_)); | |
| 806 generator_.OnFecTimeout(); | |
| 807 CheckPacketIsFec(packet6_, /*fec_group=*/5u); | |
| 808 | |
| 809 // Send one unprotected data packet. | |
| 810 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 811 SaveArg<0>(&packet7_)); | |
| 812 consumed = generator_.ConsumeData(7, CreateData(1u), 0, true, MAY_FEC_PROTECT, | |
| 813 nullptr); | |
| 814 EXPECT_EQ(1u, consumed.bytes_consumed); | |
| 815 EXPECT_FALSE(generator_.HasQueuedFrames()); | |
| 816 EXPECT_FALSE(creator_->IsFecProtected()); | |
| 817 // Verify that one unprotected data packet was sent. | |
| 818 CheckPacketContains(contents, packet7_); | |
| 819 } | |
| 820 | |
| 821 TEST_F(QuicPacketGeneratorTest, SwitchFecOnWithPendingFrameInCreator) { | |
| 822 delegate_.SetCanWriteAnything(); | |
| 823 // Enable FEC. | |
| 824 creator_->set_max_packets_per_fec_group(2); | |
| 825 | |
| 826 generator_.StartBatchOperations(); | |
| 827 // Queue enough data to prevent a stream frame with a non-zero offset from | |
| 828 // fitting. | |
| 829 QuicConsumedData consumed = generator_.ConsumeData(7, CreateData(1u), 0, true, | |
| 830 MAY_FEC_PROTECT, nullptr); | |
| 831 EXPECT_EQ(1u, consumed.bytes_consumed); | |
| 832 EXPECT_TRUE(creator_->HasPendingFrames()); | |
| 833 | |
| 834 // Queue protected data for sending. Should cause queued frames to be flushed. | |
| 835 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 836 SaveArg<0>(&packet_)); | |
| 837 EXPECT_FALSE(creator_->IsFecProtected()); | |
| 838 consumed = generator_.ConsumeData(7, CreateData(1u), 0, true, | |
| 839 MUST_FEC_PROTECT, nullptr); | |
| 840 EXPECT_EQ(1u, consumed.bytes_consumed); | |
| 841 PacketContents contents; | |
| 842 contents.num_stream_frames = 1; | |
| 843 // Transmitted packet was not FEC protected. | |
| 844 CheckPacketContains(contents, packet_); | |
| 845 EXPECT_TRUE(creator_->IsFecProtected()); | |
| 846 EXPECT_TRUE(creator_->HasPendingFrames()); | |
| 847 } | |
| 848 | |
| 849 TEST_F(QuicPacketGeneratorTest, SwitchFecOnWithPendingFramesInGenerator) { | |
| 850 // Enable FEC. | |
| 851 creator_->set_max_packets_per_fec_group(2); | |
| 852 | |
| 853 // Queue control frames in generator. | |
| 854 delegate_.SetCanNotWrite(); | |
| 855 generator_.SetShouldSendAck(true); | |
| 856 delegate_.SetCanWriteAnything(); | |
| 857 generator_.StartBatchOperations(); | |
| 858 | |
| 859 // Set up frames to write into the creator when control frames are written. | |
| 860 EXPECT_CALL(delegate_, PopulateAckFrame(_)); | |
| 861 EXPECT_CALL(delegate_, PopulateStopWaitingFrame(_)); | |
| 862 | |
| 863 // Generator should have queued control frames, and creator should be empty. | |
| 864 EXPECT_TRUE(generator_.HasQueuedFrames()); | |
| 865 EXPECT_FALSE(creator_->HasPendingFrames()); | |
| 866 EXPECT_FALSE(creator_->IsFecProtected()); | |
| 867 | |
| 868 // Queue protected data for sending. Should cause queued frames to be flushed. | |
| 869 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 870 SaveArg<0>(&packet_)); | |
| 871 QuicConsumedData consumed = generator_.ConsumeData(7, CreateData(1u), 0, true, | |
| 872 MUST_FEC_PROTECT, nullptr); | |
| 873 EXPECT_EQ(1u, consumed.bytes_consumed); | |
| 874 PacketContents contents; | |
| 875 contents.num_ack_frames = 1; | |
| 876 contents.num_stop_waiting_frames = 1; | |
| 877 CheckPacketContains(contents, packet_); | |
| 878 | |
| 879 // FEC protection should be on in creator. | |
| 880 EXPECT_TRUE(creator_->IsFecProtected()); | |
| 881 } | |
| 882 | |
| 883 TEST_F(QuicPacketGeneratorTest, SwitchFecOnOffWithSubsequentFramesProtected) { | |
| 884 delegate_.SetCanWriteAnything(); | |
| 885 | |
| 886 // Enable FEC. | |
| 887 creator_->set_max_packets_per_fec_group(2); | |
| 888 EXPECT_FALSE(creator_->IsFecProtected()); | |
| 889 | |
| 890 // Queue stream frame to be protected in creator. | |
| 891 generator_.StartBatchOperations(); | |
| 892 QuicConsumedData consumed = generator_.ConsumeData(5, CreateData(1u), 0, true, | |
| 893 MUST_FEC_PROTECT, nullptr); | |
| 894 EXPECT_EQ(1u, consumed.bytes_consumed); | |
| 895 // Creator has a pending protected frame. | |
| 896 EXPECT_TRUE(creator_->HasPendingFrames()); | |
| 897 EXPECT_TRUE(creator_->IsFecProtected()); | |
| 898 | |
| 899 // Add enough unprotected data to exceed size of current packet, so that | |
| 900 // current packet is sent. Both frames will be sent out in a single packet. | |
| 901 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce(SaveArg<0>(&packet_)); | |
| 902 size_t data_len = kDefaultMaxPacketSize; | |
| 903 consumed = generator_.ConsumeData(5, CreateData(data_len), 0, true, | |
| 904 MAY_FEC_PROTECT, nullptr); | |
| 905 EXPECT_EQ(data_len, consumed.bytes_consumed); | |
| 906 PacketContents contents; | |
| 907 contents.num_stream_frames = 2u; | |
| 908 contents.fec_group = 1u; | |
| 909 CheckPacketContains(contents, packet_); | |
| 910 // FEC protection should still be on in creator. | |
| 911 EXPECT_TRUE(creator_->IsFecProtected()); | |
| 912 } | |
| 913 | |
| 914 TEST_F(QuicPacketGeneratorTest, SwitchFecOnOffWithSubsequentPacketsProtected) { | |
| 915 delegate_.SetCanWriteAnything(); | |
| 916 | |
| 917 // Enable FEC. | |
| 918 creator_->set_max_packets_per_fec_group(2); | |
| 919 EXPECT_FALSE(creator_->IsFecProtected()); | |
| 920 | |
| 921 // Send first packet, FEC protected. | |
| 922 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce(SaveArg<0>(&packet_)); | |
| 923 QuicConsumedData consumed = generator_.ConsumeData(5, CreateData(1u), 0, true, | |
| 924 MUST_FEC_PROTECT, nullptr); | |
| 925 EXPECT_EQ(1u, consumed.bytes_consumed); | |
| 926 PacketContents contents; | |
| 927 contents.num_stream_frames = 1u; | |
| 928 contents.fec_group = 1u; | |
| 929 CheckPacketContains(contents, packet_); | |
| 930 | |
| 931 // FEC should still be on in creator. | |
| 932 EXPECT_TRUE(creator_->IsFecProtected()); | |
| 933 | |
| 934 // Send unprotected data to cause second packet to be sent, which gets | |
| 935 // protected because it happens to fall within an open FEC group. Data packet | |
| 936 // will be followed by FEC packet. | |
| 937 { | |
| 938 InSequence dummy; | |
| 939 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 940 SaveArg<0>(&packet2_)); | |
| 941 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 942 SaveArg<0>(&packet3_)); | |
| 943 } | |
| 944 consumed = generator_.ConsumeData(5, CreateData(1u), 0, true, MAY_FEC_PROTECT, | |
| 945 nullptr); | |
| 946 EXPECT_EQ(1u, consumed.bytes_consumed); | |
| 947 contents.num_stream_frames = 1u; | |
| 948 CheckPacketContains(contents, packet2_); | |
| 949 CheckPacketIsFec(packet3_, /*fec_group=*/1u); | |
| 950 | |
| 951 // FEC protection should be off in creator. | |
| 952 EXPECT_FALSE(creator_->IsFecProtected()); | |
| 953 } | |
| 954 | |
| 955 TEST_F(QuicPacketGeneratorTest, SwitchFecOnOffThenOnWithCreatorProtectionOn) { | |
| 956 delegate_.SetCanWriteAnything(); | |
| 957 generator_.StartBatchOperations(); | |
| 958 | |
| 959 // Enable FEC. | |
| 960 creator_->set_max_packets_per_fec_group(2); | |
| 961 EXPECT_FALSE(creator_->IsFecProtected()); | |
| 962 | |
| 963 // Queue one byte of FEC protected data. | |
| 964 QuicConsumedData consumed = generator_.ConsumeData(5, CreateData(1u), 0, true, | |
| 965 MUST_FEC_PROTECT, nullptr); | |
| 966 EXPECT_TRUE(creator_->HasPendingFrames()); | |
| 967 | |
| 968 // Add more unprotected data causing first packet to be sent, FEC protected. | |
| 969 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 970 SaveArg<0>(&packet_)); | |
| 971 size_t data_len = kDefaultMaxPacketSize; | |
| 972 consumed = generator_.ConsumeData(5, CreateData(data_len), 0, true, | |
| 973 MAY_FEC_PROTECT, nullptr); | |
| 974 EXPECT_EQ(data_len, consumed.bytes_consumed); | |
| 975 PacketContents contents; | |
| 976 contents.num_stream_frames = 2u; | |
| 977 contents.fec_group = 1u; | |
| 978 CheckPacketContains(contents, packet_); | |
| 979 | |
| 980 // FEC group is still open in creator. | |
| 981 EXPECT_TRUE(creator_->IsFecProtected()); | |
| 982 | |
| 983 // Add data that should be protected, large enough to cause second packet to | |
| 984 // be sent. Data packet should be followed by FEC packet. | |
| 985 { | |
| 986 InSequence dummy; | |
| 987 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 988 SaveArg<0>(&packet2_)); | |
| 989 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 990 SaveArg<0>(&packet3_)); | |
| 991 } | |
| 992 consumed = generator_.ConsumeData(5, CreateData(data_len), 0, true, | |
| 993 MUST_FEC_PROTECT, nullptr); | |
| 994 EXPECT_EQ(data_len, consumed.bytes_consumed); | |
| 995 CheckPacketContains(contents, packet2_); | |
| 996 CheckPacketIsFec(packet3_, /*fec_group=*/1u); | |
| 997 | |
| 998 // FEC protection should remain on in creator. | |
| 999 EXPECT_TRUE(creator_->IsFecProtected()); | |
| 1000 } | |
| 1001 | |
| 1002 TEST_F(QuicPacketGeneratorTest, NotWritableThenBatchOperations) { | |
| 1003 delegate_.SetCanNotWrite(); | |
| 1004 | |
| 1005 generator_.SetShouldSendAck(false); | |
| 1006 generator_.AddControlFrame(QuicFrame(CreateRstStreamFrame())); | |
| 1007 EXPECT_TRUE(generator_.HasQueuedFrames()); | |
| 1008 | |
| 1009 delegate_.SetCanWriteAnything(); | |
| 1010 | |
| 1011 generator_.StartBatchOperations(); | |
| 1012 | |
| 1013 // When the first write operation is invoked, the ack frame will be returned. | |
| 1014 EXPECT_CALL(delegate_, PopulateAckFrame(_)); | |
| 1015 | |
| 1016 // Send some data and a control frame | |
| 1017 generator_.ConsumeData(3, MakeIOVector("quux"), 7, false, MAY_FEC_PROTECT, | |
| 1018 nullptr); | |
| 1019 generator_.AddControlFrame(QuicFrame(CreateGoAwayFrame())); | |
| 1020 | |
| 1021 // All five frames will be flushed out in a single packet. | |
| 1022 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce(SaveArg<0>(&packet_)); | |
| 1023 generator_.FinishBatchOperations(); | |
| 1024 EXPECT_FALSE(generator_.HasQueuedFrames()); | |
| 1025 | |
| 1026 PacketContents contents; | |
| 1027 contents.num_ack_frames = 1; | |
| 1028 contents.num_goaway_frames = 1; | |
| 1029 contents.num_rst_stream_frames = 1; | |
| 1030 contents.num_stream_frames = 1; | |
| 1031 CheckPacketContains(contents, packet_); | |
| 1032 } | |
| 1033 | |
| 1034 TEST_F(QuicPacketGeneratorTest, NotWritableThenBatchOperations2) { | |
| 1035 delegate_.SetCanNotWrite(); | |
| 1036 | |
| 1037 generator_.SetShouldSendAck(false); | |
| 1038 generator_.AddControlFrame(QuicFrame(CreateRstStreamFrame())); | |
| 1039 EXPECT_TRUE(generator_.HasQueuedFrames()); | |
| 1040 | |
| 1041 delegate_.SetCanWriteAnything(); | |
| 1042 | |
| 1043 generator_.StartBatchOperations(); | |
| 1044 | |
| 1045 // When the first write operation is invoked, the ack frame will be returned. | |
| 1046 EXPECT_CALL(delegate_, PopulateAckFrame(_)); | |
| 1047 | |
| 1048 { | |
| 1049 InSequence dummy; | |
| 1050 // All five frames will be flushed out in a single packet | |
| 1051 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 1052 SaveArg<0>(&packet_)); | |
| 1053 EXPECT_CALL(delegate_, OnSerializedPacket(_)).WillOnce( | |
| 1054 SaveArg<0>(&packet2_)); | |
| 1055 } | |
| 1056 | |
| 1057 // Send enough data to exceed one packet | |
| 1058 size_t data_len = kDefaultMaxPacketSize + 100; | |
| 1059 QuicConsumedData consumed = generator_.ConsumeData( | |
| 1060 3, CreateData(data_len), 0, true, MAY_FEC_PROTECT, nullptr); | |
| 1061 EXPECT_EQ(data_len, consumed.bytes_consumed); | |
| 1062 EXPECT_TRUE(consumed.fin_consumed); | |
| 1063 generator_.AddControlFrame(QuicFrame(CreateGoAwayFrame())); | |
| 1064 | |
| 1065 generator_.FinishBatchOperations(); | |
| 1066 EXPECT_FALSE(generator_.HasQueuedFrames()); | |
| 1067 | |
| 1068 // The first packet should have the queued data and part of the stream data. | |
| 1069 PacketContents contents; | |
| 1070 contents.num_ack_frames = 1; | |
| 1071 contents.num_rst_stream_frames = 1; | |
| 1072 contents.num_stream_frames = 1; | |
| 1073 CheckPacketContains(contents, packet_); | |
| 1074 | |
| 1075 // The second should have the remainder of the stream data. | |
| 1076 PacketContents contents2; | |
| 1077 contents2.num_goaway_frames = 1; | |
| 1078 contents2.num_stream_frames = 1; | |
| 1079 CheckPacketContains(contents2, packet2_); | |
| 1080 } | |
| 1081 | |
| 1082 TEST_F(QuicPacketGeneratorTest, TestConnectionIdLength) { | |
| 1083 generator_.SetConnectionIdLength(0); | |
| 1084 EXPECT_EQ(PACKET_0BYTE_CONNECTION_ID, creator_->connection_id_length()); | |
| 1085 generator_.SetConnectionIdLength(1); | |
| 1086 EXPECT_EQ(PACKET_1BYTE_CONNECTION_ID, creator_->connection_id_length()); | |
| 1087 generator_.SetConnectionIdLength(2); | |
| 1088 EXPECT_EQ(PACKET_4BYTE_CONNECTION_ID, creator_->connection_id_length()); | |
| 1089 generator_.SetConnectionIdLength(3); | |
| 1090 EXPECT_EQ(PACKET_4BYTE_CONNECTION_ID, creator_->connection_id_length()); | |
| 1091 generator_.SetConnectionIdLength(4); | |
| 1092 EXPECT_EQ(PACKET_4BYTE_CONNECTION_ID, creator_->connection_id_length()); | |
| 1093 generator_.SetConnectionIdLength(5); | |
| 1094 EXPECT_EQ(PACKET_8BYTE_CONNECTION_ID, creator_->connection_id_length()); | |
| 1095 generator_.SetConnectionIdLength(6); | |
| 1096 EXPECT_EQ(PACKET_8BYTE_CONNECTION_ID, creator_->connection_id_length()); | |
| 1097 generator_.SetConnectionIdLength(7); | |
| 1098 EXPECT_EQ(PACKET_8BYTE_CONNECTION_ID, creator_->connection_id_length()); | |
| 1099 generator_.SetConnectionIdLength(8); | |
| 1100 EXPECT_EQ(PACKET_8BYTE_CONNECTION_ID, creator_->connection_id_length()); | |
| 1101 generator_.SetConnectionIdLength(9); | |
| 1102 EXPECT_EQ(PACKET_8BYTE_CONNECTION_ID, creator_->connection_id_length()); | |
| 1103 } | |
| 1104 | |
| 1105 } // namespace test | |
| 1106 } // namespace net | |
| OLD | NEW |
|---|
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Issue 992733002:
Remove //net (except for Android test stuff) and sdch (Closed)
Base URL: git@github.com:domokit/mojo.git@master