net/quic/quic_session_test.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "net/quic/quic_session.h"
   6
   7 #include <set>
   8
   9 #include "base/basictypes.h"
  10 #include "base/containers/hash_tables.h"
  11 #include "base/rand_util.h"
  12 #include "base/stl_util.h"
  13 #include "base/strings/string_number_conversions.h"
  14 #include "net/quic/crypto/crypto_protocol.h"
  15 #include "net/quic/quic_crypto_stream.h"
  16 #include "net/quic/quic_flags.h"
  17 #include "net/quic/quic_protocol.h"
  18 #include "net/quic/quic_utils.h"
  19 #include "net/quic/reliable_quic_stream.h"
  20 #include "net/quic/test_tools/quic_config_peer.h"
  21 #include "net/quic/test_tools/quic_connection_peer.h"
  22 #include "net/quic/test_tools/quic_data_stream_peer.h"
  23 #include "net/quic/test_tools/quic_flow_controller_peer.h"
  24 #include "net/quic/test_tools/quic_session_peer.h"
  25 #include "net/quic/test_tools/quic_test_utils.h"
  26 #include "net/quic/test_tools/reliable_quic_stream_peer.h"
  27 #include "net/spdy/spdy_framer.h"
  28 #include "net/test/gtest_util.h"
  29 #include "testing/gmock/include/gmock/gmock.h"
  30 #include "testing/gmock_mutant.h"
  31 #include "testing/gtest/include/gtest/gtest.h"
  32
  33 using base::hash_map;
  34 using std::set;
  35 using std::string;
  36 using std::vector;
  37 using testing::CreateFunctor;
  38 using testing::InSequence;
  39 using testing::Invoke;
  40 using testing::Return;
  41 using testing::StrictMock;
  42 using testing::_;
  43
  44 namespace net {
  45 namespace test {
  46 namespace {
  47
  48 const QuicPriority kHighestPriority = 0;
  49 const QuicPriority kSomeMiddlePriority = 3;
  50
  51 class TestCryptoStream : public QuicCryptoStream {
  52  public:
  53   explicit TestCryptoStream(QuicSession* session)
  54       : QuicCryptoStream(session) {
  55   }
  56
  57   void OnHandshakeMessage(const CryptoHandshakeMessage& message) override {
  58     encryption_established_ = true;
  59     handshake_confirmed_ = true;
  60     CryptoHandshakeMessage msg;
  61     string error_details;
  62     session()->config()->SetInitialStreamFlowControlWindowToSend(
  63         kInitialStreamFlowControlWindowForTest);
  64     session()->config()->SetInitialSessionFlowControlWindowToSend(
  65         kInitialSessionFlowControlWindowForTest);
  66     session()->config()->ToHandshakeMessage(&msg);
  67     const QuicErrorCode error = session()->config()->ProcessPeerHello(
  68         msg, CLIENT, &error_details);
  69     EXPECT_EQ(QUIC_NO_ERROR, error);
  70     session()->OnConfigNegotiated();
  71     session()->OnCryptoHandshakeEvent(QuicSession::HANDSHAKE_CONFIRMED);
  72   }
  73
  74   MOCK_METHOD0(OnCanWrite, void());
  75 };
  76
  77 class TestHeadersStream : public QuicHeadersStream {
  78  public:
  79   explicit TestHeadersStream(QuicSession* session)
  80       : QuicHeadersStream(session) {
  81   }
  82
  83   MOCK_METHOD0(OnCanWrite, void());
  84 };
  85
  86 class TestStream : public QuicDataStream {
  87  public:
  88   TestStream(QuicStreamId id, QuicSession* session)
  89       : QuicDataStream(id, session) {
  90   }
  91
  92   using ReliableQuicStream::CloseWriteSide;
  93
  94   uint32 ProcessData(const char* data, uint32 data_len) override {
  95     return data_len;
  96   }
  97
  98   void SendBody(const string& data, bool fin) {
  99     WriteOrBufferData(data, fin, nullptr);
 100   }
 101
 102   MOCK_METHOD0(OnCanWrite, void());
 103 };
 104
 105 // Poor man's functor for use as callback in a mock.
 106 class StreamBlocker {
 107  public:
 108   StreamBlocker(QuicSession* session, QuicStreamId stream_id)
 109       : session_(session),
 110         stream_id_(stream_id) {
 111   }
 112
 113   void MarkWriteBlocked() {
 114     session_->MarkWriteBlocked(stream_id_, kSomeMiddlePriority);
 115   }
 116
 117  private:
 118   QuicSession* const session_;
 119   const QuicStreamId stream_id_;
 120 };
 121
 122 class TestSession : public QuicSession {
 123  public:
 124   explicit TestSession(QuicConnection* connection)
 125       : QuicSession(connection, DefaultQuicConfig()),
 126         crypto_stream_(this),
 127         writev_consumes_all_data_(false) {
 128     InitializeSession();
 129   }
 130
 131   TestCryptoStream* GetCryptoStream() override { return &crypto_stream_; }
 132
 133   TestStream* CreateOutgoingDataStream() override {
 134     TestStream* stream = new TestStream(GetNextStreamId(), this);
 135     ActivateStream(stream);
 136     return stream;
 137   }
 138
 139   TestStream* CreateIncomingDataStream(QuicStreamId id) override {
 140     return new TestStream(id, this);
 141   }
 142
 143   bool IsClosedStream(QuicStreamId id) {
 144     return QuicSession::IsClosedStream(id);
 145   }
 146
 147   QuicDataStream* GetIncomingDataStream(QuicStreamId stream_id) {
 148     return QuicSession::GetIncomingDataStream(stream_id);
 149   }
 150
 151   QuicConsumedData WritevData(
 152       QuicStreamId id,
 153       const IOVector& data,
 154       QuicStreamOffset offset,
 155       bool fin,
 156       FecProtection fec_protection,
 157       QuicAckNotifier::DelegateInterface* ack_notifier_delegate) override {
 158     // Always consumes everything.
 159     if (writev_consumes_all_data_) {
 160       return QuicConsumedData(data.TotalBufferSize(), fin);
 161     } else {
 162       return QuicSession::WritevData(id, data, offset, fin, fec_protection,
 163                                      ack_notifier_delegate);
 164     }
 165   }
 166
 167   void set_writev_consumes_all_data(bool val) {
 168     writev_consumes_all_data_ = val;
 169   }
 170
 171   QuicConsumedData SendStreamData(QuicStreamId id) {
 172     return WritevData(id, MakeIOVector("not empty"), 0, true, MAY_FEC_PROTECT,
 173                       nullptr);
 174   }
 175
 176   using QuicSession::PostProcessAfterData;
 177
 178  private:
 179   StrictMock<TestCryptoStream> crypto_stream_;
 180
 181   bool writev_consumes_all_data_;
 182 };
 183
 184 class QuicSessionTestBase : public ::testing::TestWithParam<QuicVersion> {
 185  protected:
 186   explicit QuicSessionTestBase(Perspective perspective)
 187       : connection_(
 188             new StrictMock<MockConnection>(perspective,
 189                                            SupportedVersions(GetParam()))),
 190         session_(connection_) {
 191     session_.config()->SetInitialStreamFlowControlWindowToSend(
 192         kInitialStreamFlowControlWindowForTest);
 193     session_.config()->SetInitialSessionFlowControlWindowToSend(
 194         kInitialSessionFlowControlWindowForTest);
 195     headers_[":host"] = "www.google.com";
 196     headers_[":path"] = "/index.hml";
 197     headers_[":scheme"] = "http";
 198     headers_["cookie"] =
 199         "__utma=208381060.1228362404.1372200928.1372200928.1372200928.1; "
 200         "__utmc=160408618; "
 201         "GX=DQAAAOEAAACWJYdewdE9rIrW6qw3PtVi2-d729qaa-74KqOsM1NVQblK4VhX"
 202         "hoALMsy6HOdDad2Sz0flUByv7etmo3mLMidGrBoljqO9hSVA40SLqpG_iuKKSHX"
 203         "RW3Np4bq0F0SDGDNsW0DSmTS9ufMRrlpARJDS7qAI6M3bghqJp4eABKZiRqebHT"
 204         "pMU-RXvTI5D5oCF1vYxYofH_l1Kviuiy3oQ1kS1enqWgbhJ2t61_SNdv-1XJIS0"
 205         "O3YeHLmVCs62O6zp89QwakfAWK9d3IDQvVSJzCQsvxvNIvaZFa567MawWlXg0Rh"
 206         "1zFMi5vzcns38-8_Sns; "
 207         "GA=v*2%2Fmem*57968640*47239936%2Fmem*57968640*47114716%2Fno-nm-"
 208         "yj*15%2Fno-cc-yj*5%2Fpc-ch*133685%2Fpc-s-cr*133947%2Fpc-s-t*1339"
 209         "47%2Fno-nm-yj*4%2Fno-cc-yj*1%2Fceft-as*1%2Fceft-nqas*0%2Fad-ra-c"
 210         "v_p%2Fad-nr-cv_p-f*1%2Fad-v-cv_p*859%2Fad-ns-cv_p-f*1%2Ffn-v-ad%"
 211         "2Fpc-t*250%2Fpc-cm*461%2Fpc-s-cr*722%2Fpc-s-t*722%2Fau_p*4"
 212         "SICAID=AJKiYcHdKgxum7KMXG0ei2t1-W4OD1uW-ecNsCqC0wDuAXiDGIcT_HA2o1"
 213         "3Rs1UKCuBAF9g8rWNOFbxt8PSNSHFuIhOo2t6bJAVpCsMU5Laa6lewuTMYI8MzdQP"
 214         "ARHKyW-koxuhMZHUnGBJAM1gJODe0cATO_KGoX4pbbFxxJ5IicRxOrWK_5rU3cdy6"
 215         "edlR9FsEdH6iujMcHkbE5l18ehJDwTWmBKBzVD87naobhMMrF6VvnDGxQVGp9Ir_b"
 216         "Rgj3RWUoPumQVCxtSOBdX0GlJOEcDTNCzQIm9BSfetog_eP_TfYubKudt5eMsXmN6"
 217         "QnyXHeGeK2UINUzJ-D30AFcpqYgH9_1BvYSpi7fc7_ydBU8TaD8ZRxvtnzXqj0RfG"
 218         "tuHghmv3aD-uzSYJ75XDdzKdizZ86IG6Fbn1XFhYZM-fbHhm3mVEXnyRW4ZuNOLFk"
 219         "Fas6LMcVC6Q8QLlHYbXBpdNFuGbuZGUnav5C-2I_-46lL0NGg3GewxGKGHvHEfoyn"
 220         "EFFlEYHsBQ98rXImL8ySDycdLEFvBPdtctPmWCfTxwmoSMLHU2SCVDhbqMWU5b0yr"
 221         "JBCScs_ejbKaqBDoB7ZGxTvqlrB__2ZmnHHjCr8RgMRtKNtIeuZAo ";
 222     connection_->AdvanceTime(QuicTime::Delta::FromSeconds(1));
 223   }
 224
 225   void CheckClosedStreams() {
 226     for (int i = kCryptoStreamId; i < 100; i++) {
 227       if (!ContainsKey(closed_streams_, i)) {
 228         EXPECT_FALSE(session_.IsClosedStream(i)) << " stream id: " << i;
 229       } else {
 230         EXPECT_TRUE(session_.IsClosedStream(i)) << " stream id: " << i;
 231       }
 232     }
 233   }
 234
 235   void CloseStream(QuicStreamId id) {
 236     EXPECT_CALL(*connection_, SendRstStream(id, _, _));
 237     session_.CloseStream(id);
 238     closed_streams_.insert(id);
 239   }
 240
 241   QuicVersion version() const { return connection_->version(); }
 242
 243   StrictMock<MockConnection>* connection_;
 244   TestSession session_;
 245   set<QuicStreamId> closed_streams_;
 246   SpdyHeaderBlock headers_;
 247 };
 248
 249 class QuicSessionTestServer : public QuicSessionTestBase {
 250  protected:
 251   QuicSessionTestServer() : QuicSessionTestBase(Perspective::IS_SERVER) {}
 252 };
 253
 254 INSTANTIATE_TEST_CASE_P(Tests,
 255                         QuicSessionTestServer,
 256                         ::testing::ValuesIn(QuicSupportedVersions()));
 257
 258 TEST_P(QuicSessionTestServer, PeerAddress) {
 259   EXPECT_EQ(IPEndPoint(Loopback4(), kTestPort), session_.peer_address());
 260 }
 261
 262 TEST_P(QuicSessionTestServer, IsCryptoHandshakeConfirmed) {
 263   EXPECT_FALSE(session_.IsCryptoHandshakeConfirmed());
 264   CryptoHandshakeMessage message;
 265   session_.GetCryptoStream()->OnHandshakeMessage(message);
 266   EXPECT_TRUE(session_.IsCryptoHandshakeConfirmed());
 267 }
 268
 269 TEST_P(QuicSessionTestServer, IsClosedStreamDefault) {
 270   // Ensure that no streams are initially closed.
 271   for (int i = kCryptoStreamId; i < 100; i++) {
 272     EXPECT_FALSE(session_.IsClosedStream(i)) << "stream id: " << i;
 273   }
 274 }
 275
 276 TEST_P(QuicSessionTestServer, ImplicitlyCreatedStreams) {
 277   ASSERT_TRUE(session_.GetIncomingDataStream(9) != nullptr);
 278   // Both 5 and 7 should be implicitly created.
 279   EXPECT_TRUE(QuicSessionPeer::IsStreamImplicitlyCreated(&session_, 5));
 280   EXPECT_TRUE(QuicSessionPeer::IsStreamImplicitlyCreated(&session_, 7));
 281   ASSERT_TRUE(session_.GetIncomingDataStream(7) != nullptr);
 282   ASSERT_TRUE(session_.GetIncomingDataStream(5) != nullptr);
 283 }
 284
 285 TEST_P(QuicSessionTestServer, IsClosedStreamLocallyCreated) {
 286   TestStream* stream2 = session_.CreateOutgoingDataStream();
 287   EXPECT_EQ(2u, stream2->id());
 288   TestStream* stream4 = session_.CreateOutgoingDataStream();
 289   EXPECT_EQ(4u, stream4->id());
 290
 291   CheckClosedStreams();
 292   CloseStream(4);
 293   CheckClosedStreams();
 294   CloseStream(2);
 295   CheckClosedStreams();
 296 }
 297
 298 TEST_P(QuicSessionTestServer, IsClosedStreamPeerCreated) {
 299   QuicStreamId stream_id1 = kClientDataStreamId1;
 300   QuicStreamId stream_id2 = kClientDataStreamId2;
 301   QuicDataStream* stream1 = session_.GetIncomingDataStream(stream_id1);
 302   QuicDataStreamPeer::SetHeadersDecompressed(stream1, true);
 303   QuicDataStream* stream2 = session_.GetIncomingDataStream(stream_id2);
 304   QuicDataStreamPeer::SetHeadersDecompressed(stream2, true);
 305
 306   CheckClosedStreams();
 307   CloseStream(stream_id1);
 308   CheckClosedStreams();
 309   CloseStream(stream_id2);
 310   // Create a stream explicitly, and another implicitly.
 311   QuicDataStream* stream3 = session_.GetIncomingDataStream(stream_id2 + 4);
 312   QuicDataStreamPeer::SetHeadersDecompressed(stream3, true);
 313   CheckClosedStreams();
 314   // Close one, but make sure the other is still not closed
 315   CloseStream(stream3->id());
 316   CheckClosedStreams();
 317 }
 318
 319 TEST_P(QuicSessionTestServer, StreamIdTooLarge) {
 320   QuicStreamId stream_id = kClientDataStreamId1;
 321   session_.GetIncomingDataStream(stream_id);
 322   EXPECT_CALL(*connection_, SendConnectionClose(QUIC_INVALID_STREAM_ID));
 323   session_.GetIncomingDataStream(stream_id + kMaxStreamIdDelta + 2);
 324 }
 325
 326 TEST_P(QuicSessionTestServer, DebugDFatalIfMarkingClosedStreamWriteBlocked) {
 327   TestStream* stream2 = session_.CreateOutgoingDataStream();
 328   QuicStreamId kClosedStreamId = stream2->id();
 329   // Close the stream.
 330   EXPECT_CALL(*connection_, SendRstStream(kClosedStreamId, _, _));
 331   stream2->Reset(QUIC_BAD_APPLICATION_PAYLOAD);
 332   EXPECT_DEBUG_DFATAL(
 333       session_.MarkWriteBlocked(kClosedStreamId, kSomeMiddlePriority),
 334       "Marking unknown stream 2 blocked.");
 335 }
 336
 337 TEST_P(QuicSessionTestServer,
 338        DebugDFatalIfMarkWriteBlockedCalledWithWrongPriority) {
 339   const QuicPriority kDifferentPriority = 0;
 340
 341   TestStream* stream2 = session_.CreateOutgoingDataStream();
 342   EXPECT_NE(kDifferentPriority, stream2->EffectivePriority());
 343   EXPECT_DEBUG_DFATAL(
 344       session_.MarkWriteBlocked(stream2->id(), kDifferentPriority),
 345       "Priorities do not match.  Got: 0 Expected: 3");
 346 }
 347
 348 TEST_P(QuicSessionTestServer, OnCanWrite) {
 349   TestStream* stream2 = session_.CreateOutgoingDataStream();
 350   TestStream* stream4 = session_.CreateOutgoingDataStream();
 351   TestStream* stream6 = session_.CreateOutgoingDataStream();
 352
 353   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 354   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 355   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 356
 357   InSequence s;
 358   StreamBlocker stream2_blocker(&session_, stream2->id());
 359   // Reregister, to test the loop limit.
 360   EXPECT_CALL(*stream2, OnCanWrite())
 361       .WillOnce(Invoke(&stream2_blocker, &StreamBlocker::MarkWriteBlocked));
 362   EXPECT_CALL(*stream6, OnCanWrite());
 363   EXPECT_CALL(*stream4, OnCanWrite());
 364   session_.OnCanWrite();
 365   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 366 }
 367
 368 TEST_P(QuicSessionTestServer, OnCanWriteBundlesStreams) {
 369   // Drive congestion control manually.
 370   MockSendAlgorithm* send_algorithm = new StrictMock<MockSendAlgorithm>;
 371   QuicConnectionPeer::SetSendAlgorithm(session_.connection(), send_algorithm);
 372
 373   TestStream* stream2 = session_.CreateOutgoingDataStream();
 374   TestStream* stream4 = session_.CreateOutgoingDataStream();
 375   TestStream* stream6 = session_.CreateOutgoingDataStream();
 376
 377   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 378   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 379   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 380
 381   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillRepeatedly(
 382       Return(QuicTime::Delta::Zero()));
 383   EXPECT_CALL(*send_algorithm, GetCongestionWindow())
 384       .WillRepeatedly(Return(kMaxPacketSize * 10));
 385   EXPECT_CALL(*stream2, OnCanWrite())
 386       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 387           &session_, &TestSession::SendStreamData, stream2->id()))));
 388   EXPECT_CALL(*stream4, OnCanWrite())
 389       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 390           &session_, &TestSession::SendStreamData, stream4->id()))));
 391   EXPECT_CALL(*stream6, OnCanWrite())
 392       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 393           &session_, &TestSession::SendStreamData, stream6->id()))));
 394
 395   // Expect that we only send one packet, the writes from different streams
 396   // should be bundled together.
 397   MockPacketWriter* writer =
 398       static_cast<MockPacketWriter*>(
 399           QuicConnectionPeer::GetWriter(session_.connection()));
 400   EXPECT_CALL(*writer, WritePacket(_, _, _, _)).WillOnce(
 401                   Return(WriteResult(WRITE_STATUS_OK, 0)));
 402   EXPECT_CALL(*send_algorithm, OnPacketSent(_, _, _, _, _)).Times(1);
 403   session_.OnCanWrite();
 404   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 405 }
 406
 407 TEST_P(QuicSessionTestServer, OnCanWriteCongestionControlBlocks) {
 408   InSequence s;
 409
 410   // Drive congestion control manually.
 411   MockSendAlgorithm* send_algorithm = new StrictMock<MockSendAlgorithm>;
 412   QuicConnectionPeer::SetSendAlgorithm(session_.connection(), send_algorithm);
 413
 414   TestStream* stream2 = session_.CreateOutgoingDataStream();
 415   TestStream* stream4 = session_.CreateOutgoingDataStream();
 416   TestStream* stream6 = session_.CreateOutgoingDataStream();
 417
 418   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 419   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 420   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 421
 422   StreamBlocker stream2_blocker(&session_, stream2->id());
 423   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 424       QuicTime::Delta::Zero()));
 425   EXPECT_CALL(*stream2, OnCanWrite());
 426   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 427       QuicTime::Delta::Zero()));
 428   EXPECT_CALL(*stream6, OnCanWrite());
 429   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 430       QuicTime::Delta::Infinite()));
 431   // stream4->OnCanWrite is not called.
 432
 433   session_.OnCanWrite();
 434   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 435
 436   // Still congestion-control blocked.
 437   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 438       QuicTime::Delta::Infinite()));
 439   session_.OnCanWrite();
 440   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 441
 442   // stream4->OnCanWrite is called once the connection stops being
 443   // congestion-control blocked.
 444   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 445       QuicTime::Delta::Zero()));
 446   EXPECT_CALL(*stream4, OnCanWrite());
 447   session_.OnCanWrite();
 448   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 449 }
 450
 451 TEST_P(QuicSessionTestServer, BufferedHandshake) {
 452   EXPECT_FALSE(session_.HasPendingHandshake());  // Default value.
 453
 454   // Test that blocking other streams does not change our status.
 455   TestStream* stream2 = session_.CreateOutgoingDataStream();
 456   StreamBlocker stream2_blocker(&session_, stream2->id());
 457   stream2_blocker.MarkWriteBlocked();
 458   EXPECT_FALSE(session_.HasPendingHandshake());
 459
 460   TestStream* stream3 = session_.CreateOutgoingDataStream();
 461   StreamBlocker stream3_blocker(&session_, stream3->id());
 462   stream3_blocker.MarkWriteBlocked();
 463   EXPECT_FALSE(session_.HasPendingHandshake());
 464
 465   // Blocking (due to buffering of) the Crypto stream is detected.
 466   session_.MarkWriteBlocked(kCryptoStreamId, kHighestPriority);
 467   EXPECT_TRUE(session_.HasPendingHandshake());
 468
 469   TestStream* stream4 = session_.CreateOutgoingDataStream();
 470   StreamBlocker stream4_blocker(&session_, stream4->id());
 471   stream4_blocker.MarkWriteBlocked();
 472   EXPECT_TRUE(session_.HasPendingHandshake());
 473
 474   InSequence s;
 475   // Force most streams to re-register, which is common scenario when we block
 476   // the Crypto stream, and only the crypto stream can "really" write.
 477
 478   // Due to prioritization, we *should* be asked to write the crypto stream
 479   // first.
 480   // Don't re-register the crypto stream (which signals complete writing).
 481   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 482   EXPECT_CALL(*crypto_stream, OnCanWrite());
 483
 484   // Re-register all other streams, to show they weren't able to proceed.
 485   EXPECT_CALL(*stream2, OnCanWrite())
 486       .WillOnce(Invoke(&stream2_blocker, &StreamBlocker::MarkWriteBlocked));
 487   EXPECT_CALL(*stream3, OnCanWrite())
 488       .WillOnce(Invoke(&stream3_blocker, &StreamBlocker::MarkWriteBlocked));
 489   EXPECT_CALL(*stream4, OnCanWrite())
 490       .WillOnce(Invoke(&stream4_blocker, &StreamBlocker::MarkWriteBlocked));
 491
 492   session_.OnCanWrite();
 493   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 494   EXPECT_FALSE(session_.HasPendingHandshake());  // Crypto stream wrote.
 495 }
 496
 497 TEST_P(QuicSessionTestServer, OnCanWriteWithClosedStream) {
 498   TestStream* stream2 = session_.CreateOutgoingDataStream();
 499   TestStream* stream4 = session_.CreateOutgoingDataStream();
 500   TestStream* stream6 = session_.CreateOutgoingDataStream();
 501
 502   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 503   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 504   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 505   CloseStream(stream6->id());
 506
 507   InSequence s;
 508   EXPECT_CALL(*stream2, OnCanWrite());
 509   EXPECT_CALL(*stream4, OnCanWrite());
 510   session_.OnCanWrite();
 511   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 512 }
 513
 514 TEST_P(QuicSessionTestServer, OnCanWriteLimitsNumWritesIfFlowControlBlocked) {
 515   // Ensure connection level flow control blockage.
 516   QuicFlowControllerPeer::SetSendWindowOffset(session_.flow_controller(), 0);
 517   EXPECT_TRUE(session_.flow_controller()->IsBlocked());
 518   EXPECT_TRUE(session_.IsConnectionFlowControlBlocked());
 519   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 520
 521   // Mark the crypto and headers streams as write blocked, we expect them to be
 522   // allowed to write later.
 523   session_.MarkWriteBlocked(kCryptoStreamId, kHighestPriority);
 524   session_.MarkWriteBlocked(kHeadersStreamId, kHighestPriority);
 525
 526   // Create a data stream, and although it is write blocked we never expect it
 527   // to be allowed to write as we are connection level flow control blocked.
 528   TestStream* stream = session_.CreateOutgoingDataStream();
 529   session_.MarkWriteBlocked(stream->id(), kSomeMiddlePriority);
 530   EXPECT_CALL(*stream, OnCanWrite()).Times(0);
 531
 532   // The crypto and headers streams should be called even though we are
 533   // connection flow control blocked.
 534   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 535   EXPECT_CALL(*crypto_stream, OnCanWrite()).Times(1);
 536   TestHeadersStream* headers_stream = new TestHeadersStream(&session_);
 537   QuicSessionPeer::SetHeadersStream(&session_, headers_stream);
 538   EXPECT_CALL(*headers_stream, OnCanWrite()).Times(1);
 539
 540   session_.OnCanWrite();
 541   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 542 }
 543
 544 TEST_P(QuicSessionTestServer, SendGoAway) {
 545   EXPECT_CALL(*connection_,
 546               SendGoAway(QUIC_PEER_GOING_AWAY, 0u, "Going Away."));
 547   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 548   EXPECT_TRUE(session_.goaway_sent());
 549
 550   EXPECT_CALL(*connection_,
 551               SendRstStream(3u, QUIC_STREAM_PEER_GOING_AWAY, 0)).Times(0);
 552   EXPECT_TRUE(session_.GetIncomingDataStream(3u));
 553 }
 554
 555 TEST_P(QuicSessionTestServer, DoNotSendGoAwayTwice) {
 556   EXPECT_CALL(*connection_,
 557               SendGoAway(QUIC_PEER_GOING_AWAY, 0u, "Going Away.")).Times(1);
 558   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 559   EXPECT_TRUE(session_.goaway_sent());
 560   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 561 }
 562
 563 TEST_P(QuicSessionTestServer, IncreasedTimeoutAfterCryptoHandshake) {
 564   EXPECT_EQ(kInitialIdleTimeoutSecs + 3,
 565             QuicConnectionPeer::GetNetworkTimeout(connection_).ToSeconds());
 566   CryptoHandshakeMessage msg;
 567   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 568   EXPECT_EQ(kMaximumIdleTimeoutSecs + 3,
 569             QuicConnectionPeer::GetNetworkTimeout(connection_).ToSeconds());
 570 }
 571
 572 TEST_P(QuicSessionTestServer, RstStreamBeforeHeadersDecompressed) {
 573   // Send two bytes of payload.
 574   QuicStreamFrame data1(kClientDataStreamId1, false, 0, MakeIOVector("HT"));
 575   vector<QuicStreamFrame> frames;
 576   frames.push_back(data1);
 577   session_.OnStreamFrames(frames);
 578   EXPECT_EQ(1u, session_.GetNumOpenStreams());
 579
 580   EXPECT_CALL(*connection_, SendRstStream(kClientDataStreamId1, _, _));
 581   QuicRstStreamFrame rst1(kClientDataStreamId1, QUIC_STREAM_NO_ERROR, 0);
 582   session_.OnRstStream(rst1);
 583   EXPECT_EQ(0u, session_.GetNumOpenStreams());
 584   // Connection should remain alive.
 585   EXPECT_TRUE(connection_->connected());
 586 }
 587
 588 TEST_P(QuicSessionTestServer, MultipleRstStreamsCauseSingleConnectionClose) {
 589   // If multiple invalid reset stream frames arrive in a single packet, this
 590   // should trigger a connection close. However there is no need to send
 591   // multiple connection close frames.
 592
 593   // Create valid stream.
 594   QuicStreamFrame data1(kClientDataStreamId1, false, 0, MakeIOVector("HT"));
 595   vector<QuicStreamFrame> frames;
 596   frames.push_back(data1);
 597   session_.OnStreamFrames(frames);
 598   EXPECT_EQ(1u, session_.GetNumOpenStreams());
 599
 600   // Process first invalid stream reset, resulting in the connection being
 601   // closed.
 602   EXPECT_CALL(*connection_, SendConnectionClose(QUIC_INVALID_STREAM_ID))
 603       .Times(1);
 604   QuicStreamId kLargeInvalidStreamId = 99999999;
 605   QuicRstStreamFrame rst1(kLargeInvalidStreamId, QUIC_STREAM_NO_ERROR, 0);
 606   session_.OnRstStream(rst1);
 607   QuicConnectionPeer::CloseConnection(connection_);
 608
 609   // Processing of second invalid stream reset should not result in the
 610   // connection being closed for a second time.
 611   QuicRstStreamFrame rst2(kLargeInvalidStreamId, QUIC_STREAM_NO_ERROR, 0);
 612   session_.OnRstStream(rst2);
 613 }
 614
 615 TEST_P(QuicSessionTestServer, HandshakeUnblocksFlowControlBlockedStream) {
 616   // Test that if a stream is flow control blocked, then on receipt of the SHLO
 617   // containing a suitable send window offset, the stream becomes unblocked.
 618
 619   // Ensure that Writev consumes all the data it is given (simulate no socket
 620   // blocking).
 621   session_.set_writev_consumes_all_data(true);
 622
 623   // Create a stream, and send enough data to make it flow control blocked.
 624   TestStream* stream2 = session_.CreateOutgoingDataStream();
 625   string body(kMinimumFlowControlSendWindow, '.');
 626   EXPECT_FALSE(stream2->flow_controller()->IsBlocked());
 627   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 628   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 629   EXPECT_CALL(*connection_, SendBlocked(stream2->id()));
 630   EXPECT_CALL(*connection_, SendBlocked(0));
 631   stream2->SendBody(body, false);
 632   EXPECT_TRUE(stream2->flow_controller()->IsBlocked());
 633   EXPECT_TRUE(session_.IsConnectionFlowControlBlocked());
 634   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 635
 636   // The handshake message will call OnCanWrite, so the stream can resume
 637   // writing.
 638   EXPECT_CALL(*stream2, OnCanWrite());
 639   // Now complete the crypto handshake, resulting in an increased flow control
 640   // send window.
 641   CryptoHandshakeMessage msg;
 642   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 643
 644   // Stream is now unblocked.
 645   EXPECT_FALSE(stream2->flow_controller()->IsBlocked());
 646   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 647   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 648 }
 649
 650 TEST_P(QuicSessionTestServer, HandshakeUnblocksFlowControlBlockedCryptoStream) {
 651   // Test that if the crypto stream is flow control blocked, then if the SHLO
 652   // contains a larger send window offset, the stream becomes unblocked.
 653   session_.set_writev_consumes_all_data(true);
 654   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 655   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 656   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 657   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 658   QuicHeadersStream* headers_stream =
 659       QuicSessionPeer::GetHeadersStream(&session_);
 660   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 661   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 662   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 663   // Write until the crypto stream is flow control blocked.
 664   EXPECT_CALL(*connection_, SendBlocked(kCryptoStreamId));
 665   int i = 0;
 666   while (!crypto_stream->flow_controller()->IsBlocked() && i < 1000) {
 667     EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 668     EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 669     QuicConfig config;
 670     CryptoHandshakeMessage crypto_message;
 671     config.ToHandshakeMessage(&crypto_message);
 672     crypto_stream->SendHandshakeMessage(crypto_message);
 673     ++i;
 674   }
 675   EXPECT_TRUE(crypto_stream->flow_controller()->IsBlocked());
 676   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 677   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 678   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 679   EXPECT_FALSE(session_.HasDataToWrite());
 680   EXPECT_TRUE(crypto_stream->HasBufferedData());
 681
 682   // The handshake message will call OnCanWrite, so the stream can
 683   // resume writing.
 684   EXPECT_CALL(*crypto_stream, OnCanWrite());
 685   // Now complete the crypto handshake, resulting in an increased flow control
 686   // send window.
 687   CryptoHandshakeMessage msg;
 688   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 689
 690   // Stream is now unblocked and will no longer have buffered data.
 691   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 692   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 693   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 694 }
 695
 696 TEST_P(QuicSessionTestServer,
 697        HandshakeUnblocksFlowControlBlockedHeadersStream) {
 698   // Test that if the header stream is flow control blocked, then if the SHLO
 699   // contains a larger send window offset, the stream becomes unblocked.
 700   session_.set_writev_consumes_all_data(true);
 701   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 702   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 703   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 704   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 705   QuicHeadersStream* headers_stream =
 706       QuicSessionPeer::GetHeadersStream(&session_);
 707   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 708   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 709   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 710   QuicStreamId stream_id = 5;
 711   // Write until the header stream is flow control blocked.
 712   EXPECT_CALL(*connection_, SendBlocked(kHeadersStreamId));
 713   SpdyHeaderBlock headers;
 714   while (!headers_stream->flow_controller()->IsBlocked() && stream_id < 2000) {
 715     EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 716     EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 717     headers["header"] = base::Uint64ToString(base::RandUint64()) +
 718         base::Uint64ToString(base::RandUint64()) +
 719         base::Uint64ToString(base::RandUint64());
 720     headers_stream->WriteHeaders(stream_id, headers, true, 0, nullptr);
 721     stream_id += 2;
 722   }
 723   // Write once more to ensure that the headers stream has buffered data. The
 724   // random headers may have exactly filled the flow control window.
 725   headers_stream->WriteHeaders(stream_id, headers, true, 0, nullptr);
 726   EXPECT_TRUE(headers_stream->HasBufferedData());
 727
 728   EXPECT_TRUE(headers_stream->flow_controller()->IsBlocked());
 729   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 730   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 731   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 732   EXPECT_FALSE(session_.HasDataToWrite());
 733
 734   // Now complete the crypto handshake, resulting in an increased flow control
 735   // send window.
 736   CryptoHandshakeMessage msg;
 737   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 738
 739   // Stream is now unblocked and will no longer have buffered data.
 740   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 741   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 742   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 743   EXPECT_FALSE(headers_stream->HasBufferedData());
 744 }
 745
 746 TEST_P(QuicSessionTestServer, ConnectionFlowControlAccountingRstOutOfOrder) {
 747   // Test that when we receive an out of order stream RST we correctly adjust
 748   // our connection level flow control receive window.
 749   // On close, the stream should mark as consumed all bytes between the highest
 750   // byte consumed so far and the final byte offset from the RST frame.
 751   TestStream* stream = session_.CreateOutgoingDataStream();
 752
 753   const QuicStreamOffset kByteOffset =
 754       1 + kInitialSessionFlowControlWindowForTest / 2;
 755
 756   // Expect no stream WINDOW_UPDATE frames, as stream read side closed.
 757   EXPECT_CALL(*connection_, SendWindowUpdate(stream->id(), _)).Times(0);
 758   // We do expect a connection level WINDOW_UPDATE when the stream is reset.
 759   EXPECT_CALL(*connection_,
 760               SendWindowUpdate(0, kInitialSessionFlowControlWindowForTest +
 761                                       kByteOffset)).Times(1);
 762
 763   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 764   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 765                                kByteOffset);
 766   session_.OnRstStream(rst_frame);
 767   session_.PostProcessAfterData();
 768   EXPECT_EQ(kByteOffset, session_.flow_controller()->bytes_consumed());
 769 }
 770
 771 TEST_P(QuicSessionTestServer, ConnectionFlowControlAccountingFinAndLocalReset) {
 772   // Test the situation where we receive a FIN on a stream, and before we fully
 773   // consume all the data from the sequencer buffer we locally RST the stream.
 774   // The bytes between highest consumed byte, and the final byte offset that we
 775   // determined when the FIN arrived, should be marked as consumed at the
 776   // connection level flow controller when the stream is reset.
 777   TestStream* stream = session_.CreateOutgoingDataStream();
 778
 779   const QuicStreamOffset kByteOffset =
 780       kInitialSessionFlowControlWindowForTest / 2;
 781   QuicStreamFrame frame(stream->id(), true, kByteOffset, IOVector());
 782   vector<QuicStreamFrame> frames;
 783   frames.push_back(frame);
 784   session_.OnStreamFrames(frames);
 785   session_.PostProcessAfterData();
 786   EXPECT_TRUE(connection_->connected());
 787
 788   EXPECT_EQ(0u, stream->flow_controller()->bytes_consumed());
 789   EXPECT_EQ(kByteOffset,
 790             stream->flow_controller()->highest_received_byte_offset());
 791
 792   // Reset stream locally.
 793   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 794   stream->Reset(QUIC_STREAM_CANCELLED);
 795   EXPECT_EQ(kByteOffset, session_.flow_controller()->bytes_consumed());
 796 }
 797
 798 TEST_P(QuicSessionTestServer, ConnectionFlowControlAccountingFinAfterRst) {
 799   // Test that when we RST the stream (and tear down stream state), and then
 800   // receive a FIN from the peer, we correctly adjust our connection level flow
 801   // control receive window.
 802
 803   // Connection starts with some non-zero highest received byte offset,
 804   // due to other active streams.
 805   const uint64 kInitialConnectionBytesConsumed = 567;
 806   const uint64 kInitialConnectionHighestReceivedOffset = 1234;
 807   EXPECT_LT(kInitialConnectionBytesConsumed,
 808             kInitialConnectionHighestReceivedOffset);
 809   session_.flow_controller()->UpdateHighestReceivedOffset(
 810       kInitialConnectionHighestReceivedOffset);
 811   session_.flow_controller()->AddBytesConsumed(kInitialConnectionBytesConsumed);
 812
 813   // Reset our stream: this results in the stream being closed locally.
 814   TestStream* stream = session_.CreateOutgoingDataStream();
 815   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 816   stream->Reset(QUIC_STREAM_CANCELLED);
 817
 818   // Now receive a response from the peer with a FIN. We should handle this by
 819   // adjusting the connection level flow control receive window to take into
 820   // account the total number of bytes sent by the peer.
 821   const QuicStreamOffset kByteOffset = 5678;
 822   string body = "hello";
 823   IOVector data = MakeIOVector(body);
 824   QuicStreamFrame frame(stream->id(), true, kByteOffset, data);
 825   vector<QuicStreamFrame> frames;
 826   frames.push_back(frame);
 827   session_.OnStreamFrames(frames);
 828
 829   QuicStreamOffset total_stream_bytes_sent_by_peer =
 830       kByteOffset + body.length();
 831   EXPECT_EQ(kInitialConnectionBytesConsumed + total_stream_bytes_sent_by_peer,
 832             session_.flow_controller()->bytes_consumed());
 833   EXPECT_EQ(
 834       kInitialConnectionHighestReceivedOffset + total_stream_bytes_sent_by_peer,
 835       session_.flow_controller()->highest_received_byte_offset());
 836 }
 837
 838 TEST_P(QuicSessionTestServer, ConnectionFlowControlAccountingRstAfterRst) {
 839   // Test that when we RST the stream (and tear down stream state), and then
 840   // receive a RST from the peer, we correctly adjust our connection level flow
 841   // control receive window.
 842
 843   // Connection starts with some non-zero highest received byte offset,
 844   // due to other active streams.
 845   const uint64 kInitialConnectionBytesConsumed = 567;
 846   const uint64 kInitialConnectionHighestReceivedOffset = 1234;
 847   EXPECT_LT(kInitialConnectionBytesConsumed,
 848             kInitialConnectionHighestReceivedOffset);
 849   session_.flow_controller()->UpdateHighestReceivedOffset(
 850       kInitialConnectionHighestReceivedOffset);
 851   session_.flow_controller()->AddBytesConsumed(kInitialConnectionBytesConsumed);
 852
 853   // Reset our stream: this results in the stream being closed locally.
 854   TestStream* stream = session_.CreateOutgoingDataStream();
 855   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 856   stream->Reset(QUIC_STREAM_CANCELLED);
 857
 858   // Now receive a RST from the peer. We should handle this by adjusting the
 859   // connection level flow control receive window to take into account the total
 860   // number of bytes sent by the peer.
 861   const QuicStreamOffset kByteOffset = 5678;
 862   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 863                                kByteOffset);
 864   session_.OnRstStream(rst_frame);
 865
 866   EXPECT_EQ(kInitialConnectionBytesConsumed + kByteOffset,
 867             session_.flow_controller()->bytes_consumed());
 868   EXPECT_EQ(kInitialConnectionHighestReceivedOffset + kByteOffset,
 869             session_.flow_controller()->highest_received_byte_offset());
 870 }
 871
 872 TEST_P(QuicSessionTestServer, InvalidStreamFlowControlWindowInHandshake) {
 873   // Test that receipt of an invalid (< default) stream flow control window from
 874   // the peer results in the connection being torn down.
 875   uint32 kInvalidWindow = kMinimumFlowControlSendWindow - 1;
 876   QuicConfigPeer::SetReceivedInitialStreamFlowControlWindow(session_.config(),
 877                                                             kInvalidWindow);
 878
 879   EXPECT_CALL(*connection_,
 880               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW));
 881   session_.OnConfigNegotiated();
 882 }
 883
 884 TEST_P(QuicSessionTestServer, InvalidSessionFlowControlWindowInHandshake) {
 885   // Test that receipt of an invalid (< default) session flow control window
 886   // from the peer results in the connection being torn down.
 887   uint32 kInvalidWindow = kMinimumFlowControlSendWindow - 1;
 888   QuicConfigPeer::SetReceivedInitialSessionFlowControlWindow(session_.config(),
 889                                                              kInvalidWindow);
 890
 891   EXPECT_CALL(*connection_,
 892               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW));
 893   session_.OnConfigNegotiated();
 894 }
 895
 896 TEST_P(QuicSessionTestServer, FlowControlWithInvalidFinalOffset) {
 897   // Test that if we receive a stream RST with a highest byte offset that
 898   // violates flow control, that we close the connection.
 899   const uint64 kLargeOffset = kInitialSessionFlowControlWindowForTest + 1;
 900   EXPECT_CALL(*connection_,
 901               SendConnectionClose(QUIC_FLOW_CONTROL_RECEIVED_TOO_MUCH_DATA))
 902       .Times(2);
 903
 904   // Check that stream frame + FIN results in connection close.
 905   TestStream* stream = session_.CreateOutgoingDataStream();
 906   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 907   stream->Reset(QUIC_STREAM_CANCELLED);
 908   QuicStreamFrame frame(stream->id(), true, kLargeOffset, IOVector());
 909   vector<QuicStreamFrame> frames;
 910   frames.push_back(frame);
 911   session_.OnStreamFrames(frames);
 912
 913   // Check that RST results in connection close.
 914   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 915                                kLargeOffset);
 916   session_.OnRstStream(rst_frame);
 917 }
 918
 919 TEST_P(QuicSessionTestServer, WindowUpdateUnblocksHeadersStream) {
 920   // Test that a flow control blocked headers stream gets unblocked on recipt of
 921   // a WINDOW_UPDATE frame. Regression test for b/17413860.
 922
 923   // Set the headers stream to be flow control blocked.
 924   QuicHeadersStream* headers_stream =
 925       QuicSessionPeer::GetHeadersStream(&session_);
 926   QuicFlowControllerPeer::SetSendWindowOffset(headers_stream->flow_controller(),
 927                                               0);
 928   EXPECT_TRUE(headers_stream->flow_controller()->IsBlocked());
 929   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 930   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 931
 932   // Unblock the headers stream by supplying a WINDOW_UPDATE.
 933   QuicWindowUpdateFrame window_update_frame(headers_stream->id(),
 934                                             2 * kMinimumFlowControlSendWindow);
 935   vector<QuicWindowUpdateFrame> frames;
 936   frames.push_back(window_update_frame);
 937   session_.OnWindowUpdateFrames(frames);
 938   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 939   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 940   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 941 }
 942
 943 TEST_P(QuicSessionTestServer, TooManyUnfinishedStreamsCauseConnectionClose) {
 944   // If a buggy/malicious peer creates too many streams that are not ended with
 945   // a FIN or RST then we send a connection close.
 946   EXPECT_CALL(*connection_,
 947               SendConnectionClose(QUIC_TOO_MANY_UNFINISHED_STREAMS)).Times(1);
 948
 949   const int kMaxStreams = 5;
 950   QuicSessionPeer::SetMaxOpenStreams(&session_, kMaxStreams);
 951
 952   // Create kMaxStreams + 1 data streams, and close them all without receiving a
 953   // FIN or a RST from the client.
 954   const int kFirstStreamId = kClientDataStreamId1;
 955   const int kFinalStreamId = kClientDataStreamId1 + 2 * kMaxStreams + 1;
 956   for (int i = kFirstStreamId; i < kFinalStreamId; i += 2) {
 957     QuicStreamFrame data1(i, false, 0, MakeIOVector("HT"));
 958     vector<QuicStreamFrame> frames;
 959     frames.push_back(data1);
 960     session_.OnStreamFrames(frames);
 961     EXPECT_EQ(1u, session_.GetNumOpenStreams());
 962     EXPECT_CALL(*connection_, SendRstStream(i, _, _));
 963     session_.CloseStream(i);
 964   }
 965
 966   // Called after any new data is received by the session, and triggers the call
 967   // to close the connection.
 968   session_.PostProcessAfterData();
 969 }
 970
 971 class QuicSessionTestClient : public QuicSessionTestBase {
 972  protected:
 973   QuicSessionTestClient() : QuicSessionTestBase(Perspective::IS_CLIENT) {}
 974 };
 975
 976 INSTANTIATE_TEST_CASE_P(Tests,
 977                         QuicSessionTestClient,
 978                         ::testing::ValuesIn(QuicSupportedVersions()));
 979
 980 TEST_P(QuicSessionTestClient, ImplicitlyCreatedStreamsClient) {
 981   ASSERT_TRUE(session_.GetIncomingDataStream(6) != nullptr);
 982   // Both 2 and 4 should be implicitly created.
 983   EXPECT_TRUE(QuicSessionPeer::IsStreamImplicitlyCreated(&session_, 2));
 984   EXPECT_TRUE(QuicSessionPeer::IsStreamImplicitlyCreated(&session_, 4));
 985   ASSERT_TRUE(session_.GetIncomingDataStream(2) != nullptr);
 986   ASSERT_TRUE(session_.GetIncomingDataStream(4) != nullptr);
 987   // And 5 should be not implicitly created.
 988   EXPECT_FALSE(QuicSessionPeer::IsStreamImplicitlyCreated(&session_, 5));
 989 }
 990
 991 }  // namespace
 992 }  // namespace test
 993 }  // namespace net