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 QuicSessionTest : public ::testing::TestWithParam<QuicVersion> {
 185  protected:
 186   QuicSessionTest()
 187       : connection_(
 188             new StrictMock<MockConnection>(Perspective::IS_SERVER,
 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 INSTANTIATE_TEST_CASE_P(Tests, QuicSessionTest,
 250                         ::testing::ValuesIn(QuicSupportedVersions()));
 251
 252 TEST_P(QuicSessionTest, PeerAddress) {
 253   EXPECT_EQ(IPEndPoint(Loopback4(), kTestPort), session_.peer_address());
 254 }
 255
 256 TEST_P(QuicSessionTest, IsCryptoHandshakeConfirmed) {
 257   EXPECT_FALSE(session_.IsCryptoHandshakeConfirmed());
 258   CryptoHandshakeMessage message;
 259   session_.GetCryptoStream()->OnHandshakeMessage(message);
 260   EXPECT_TRUE(session_.IsCryptoHandshakeConfirmed());
 261 }
 262
 263 TEST_P(QuicSessionTest, IsClosedStreamDefault) {
 264   // Ensure that no streams are initially closed.
 265   for (int i = kCryptoStreamId; i < 100; i++) {
 266     EXPECT_FALSE(session_.IsClosedStream(i)) << "stream id: " << i;
 267   }
 268 }
 269
 270 TEST_P(QuicSessionTest, ImplicitlyCreatedStreams) {
 271   ASSERT_TRUE(session_.GetIncomingDataStream(7) != nullptr);
 272   // Both 3 and 5 should be implicitly created.
 273   EXPECT_FALSE(session_.IsClosedStream(3));
 274   EXPECT_FALSE(session_.IsClosedStream(5));
 275   ASSERT_TRUE(session_.GetIncomingDataStream(5) != nullptr);
 276   ASSERT_TRUE(session_.GetIncomingDataStream(3) != nullptr);
 277 }
 278
 279 TEST_P(QuicSessionTest, IsClosedStreamLocallyCreated) {
 280   TestStream* stream2 = session_.CreateOutgoingDataStream();
 281   EXPECT_EQ(2u, stream2->id());
 282   TestStream* stream4 = session_.CreateOutgoingDataStream();
 283   EXPECT_EQ(4u, stream4->id());
 284
 285   CheckClosedStreams();
 286   CloseStream(4);
 287   CheckClosedStreams();
 288   CloseStream(2);
 289   CheckClosedStreams();
 290 }
 291
 292 TEST_P(QuicSessionTest, IsClosedStreamPeerCreated) {
 293   QuicStreamId stream_id1 = kClientDataStreamId1;
 294   QuicStreamId stream_id2 = kClientDataStreamId2;
 295   QuicDataStream* stream1 = session_.GetIncomingDataStream(stream_id1);
 296   QuicDataStreamPeer::SetHeadersDecompressed(stream1, true);
 297   QuicDataStream* stream2 = session_.GetIncomingDataStream(stream_id2);
 298   QuicDataStreamPeer::SetHeadersDecompressed(stream2, true);
 299
 300   CheckClosedStreams();
 301   CloseStream(stream_id1);
 302   CheckClosedStreams();
 303   CloseStream(stream_id2);
 304   // Create a stream explicitly, and another implicitly.
 305   QuicDataStream* stream3 = session_.GetIncomingDataStream(stream_id2 + 4);
 306   QuicDataStreamPeer::SetHeadersDecompressed(stream3, true);
 307   CheckClosedStreams();
 308   // Close one, but make sure the other is still not closed
 309   CloseStream(stream3->id());
 310   CheckClosedStreams();
 311 }
 312
 313 TEST_P(QuicSessionTest, StreamIdTooLarge) {
 314   QuicStreamId stream_id = kClientDataStreamId1;
 315   session_.GetIncomingDataStream(stream_id);
 316   EXPECT_CALL(*connection_, SendConnectionClose(QUIC_INVALID_STREAM_ID));
 317   session_.GetIncomingDataStream(stream_id + kMaxStreamIdDelta + 2);
 318 }
 319
 320 TEST_P(QuicSessionTest, DebugDFatalIfMarkingClosedStreamWriteBlocked) {
 321   TestStream* stream2 = session_.CreateOutgoingDataStream();
 322   QuicStreamId kClosedStreamId = stream2->id();
 323   // Close the stream.
 324   EXPECT_CALL(*connection_, SendRstStream(kClosedStreamId, _, _));
 325   stream2->Reset(QUIC_BAD_APPLICATION_PAYLOAD);
 326   EXPECT_DEBUG_DFATAL(
 327       session_.MarkWriteBlocked(kClosedStreamId, kSomeMiddlePriority),
 328       "Marking unknown stream 2 blocked.");
 329 }
 330
 331 TEST_P(QuicSessionTest, DebugDFatalIfMarkWriteBlockedCalledWithWrongPriority) {
 332   const QuicPriority kDifferentPriority = 0;
 333
 334   TestStream* stream2 = session_.CreateOutgoingDataStream();
 335   EXPECT_NE(kDifferentPriority, stream2->EffectivePriority());
 336   EXPECT_DEBUG_DFATAL(
 337       session_.MarkWriteBlocked(stream2->id(), kDifferentPriority),
 338       "Priorities do not match.  Got: 0 Expected: 3");
 339 }
 340
 341 TEST_P(QuicSessionTest, OnCanWrite) {
 342   TestStream* stream2 = session_.CreateOutgoingDataStream();
 343   TestStream* stream4 = session_.CreateOutgoingDataStream();
 344   TestStream* stream6 = session_.CreateOutgoingDataStream();
 345
 346   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 347   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 348   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 349
 350   InSequence s;
 351   StreamBlocker stream2_blocker(&session_, stream2->id());
 352   // Reregister, to test the loop limit.
 353   EXPECT_CALL(*stream2, OnCanWrite())
 354       .WillOnce(Invoke(&stream2_blocker, &StreamBlocker::MarkWriteBlocked));
 355   EXPECT_CALL(*stream6, OnCanWrite());
 356   EXPECT_CALL(*stream4, OnCanWrite());
 357   session_.OnCanWrite();
 358   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 359 }
 360
 361 TEST_P(QuicSessionTest, OnCanWriteBundlesStreams) {
 362   // Drive congestion control manually.
 363   MockSendAlgorithm* send_algorithm = new StrictMock<MockSendAlgorithm>;
 364   QuicConnectionPeer::SetSendAlgorithm(session_.connection(), send_algorithm);
 365
 366   TestStream* stream2 = session_.CreateOutgoingDataStream();
 367   TestStream* stream4 = session_.CreateOutgoingDataStream();
 368   TestStream* stream6 = session_.CreateOutgoingDataStream();
 369
 370   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 371   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 372   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 373
 374   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillRepeatedly(
 375       Return(QuicTime::Delta::Zero()));
 376   EXPECT_CALL(*send_algorithm, GetCongestionWindow())
 377       .WillRepeatedly(Return(kMaxPacketSize * 10));
 378   EXPECT_CALL(*stream2, OnCanWrite())
 379       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 380           &session_, &TestSession::SendStreamData, stream2->id()))));
 381   EXPECT_CALL(*stream4, OnCanWrite())
 382       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 383           &session_, &TestSession::SendStreamData, stream4->id()))));
 384   EXPECT_CALL(*stream6, OnCanWrite())
 385       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 386           &session_, &TestSession::SendStreamData, stream6->id()))));
 387
 388   // Expect that we only send one packet, the writes from different streams
 389   // should be bundled together.
 390   MockPacketWriter* writer =
 391       static_cast<MockPacketWriter*>(
 392           QuicConnectionPeer::GetWriter(session_.connection()));
 393   EXPECT_CALL(*writer, WritePacket(_, _, _, _)).WillOnce(
 394                   Return(WriteResult(WRITE_STATUS_OK, 0)));
 395   EXPECT_CALL(*send_algorithm, OnPacketSent(_, _, _, _, _)).Times(1);
 396   session_.OnCanWrite();
 397   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 398 }
 399
 400 TEST_P(QuicSessionTest, OnCanWriteCongestionControlBlocks) {
 401   InSequence s;
 402
 403   // Drive congestion control manually.
 404   MockSendAlgorithm* send_algorithm = new StrictMock<MockSendAlgorithm>;
 405   QuicConnectionPeer::SetSendAlgorithm(session_.connection(), send_algorithm);
 406
 407   TestStream* stream2 = session_.CreateOutgoingDataStream();
 408   TestStream* stream4 = session_.CreateOutgoingDataStream();
 409   TestStream* stream6 = session_.CreateOutgoingDataStream();
 410
 411   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 412   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 413   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 414
 415   StreamBlocker stream2_blocker(&session_, stream2->id());
 416   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 417       QuicTime::Delta::Zero()));
 418   EXPECT_CALL(*stream2, OnCanWrite());
 419   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 420       QuicTime::Delta::Zero()));
 421   EXPECT_CALL(*stream6, OnCanWrite());
 422   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 423       QuicTime::Delta::Infinite()));
 424   // stream4->OnCanWrite is not called.
 425
 426   session_.OnCanWrite();
 427   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 428
 429   // Still congestion-control blocked.
 430   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 431       QuicTime::Delta::Infinite()));
 432   session_.OnCanWrite();
 433   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 434
 435   // stream4->OnCanWrite is called once the connection stops being
 436   // congestion-control blocked.
 437   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 438       QuicTime::Delta::Zero()));
 439   EXPECT_CALL(*stream4, OnCanWrite());
 440   session_.OnCanWrite();
 441   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 442 }
 443
 444 TEST_P(QuicSessionTest, BufferedHandshake) {
 445   EXPECT_FALSE(session_.HasPendingHandshake());  // Default value.
 446
 447   // Test that blocking other streams does not change our status.
 448   TestStream* stream2 = session_.CreateOutgoingDataStream();
 449   StreamBlocker stream2_blocker(&session_, stream2->id());
 450   stream2_blocker.MarkWriteBlocked();
 451   EXPECT_FALSE(session_.HasPendingHandshake());
 452
 453   TestStream* stream3 = session_.CreateOutgoingDataStream();
 454   StreamBlocker stream3_blocker(&session_, stream3->id());
 455   stream3_blocker.MarkWriteBlocked();
 456   EXPECT_FALSE(session_.HasPendingHandshake());
 457
 458   // Blocking (due to buffering of) the Crypto stream is detected.
 459   session_.MarkWriteBlocked(kCryptoStreamId, kHighestPriority);
 460   EXPECT_TRUE(session_.HasPendingHandshake());
 461
 462   TestStream* stream4 = session_.CreateOutgoingDataStream();
 463   StreamBlocker stream4_blocker(&session_, stream4->id());
 464   stream4_blocker.MarkWriteBlocked();
 465   EXPECT_TRUE(session_.HasPendingHandshake());
 466
 467   InSequence s;
 468   // Force most streams to re-register, which is common scenario when we block
 469   // the Crypto stream, and only the crypto stream can "really" write.
 470
 471   // Due to prioritization, we *should* be asked to write the crypto stream
 472   // first.
 473   // Don't re-register the crypto stream (which signals complete writing).
 474   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 475   EXPECT_CALL(*crypto_stream, OnCanWrite());
 476
 477   // Re-register all other streams, to show they weren't able to proceed.
 478   EXPECT_CALL(*stream2, OnCanWrite())
 479       .WillOnce(Invoke(&stream2_blocker, &StreamBlocker::MarkWriteBlocked));
 480   EXPECT_CALL(*stream3, OnCanWrite())
 481       .WillOnce(Invoke(&stream3_blocker, &StreamBlocker::MarkWriteBlocked));
 482   EXPECT_CALL(*stream4, OnCanWrite())
 483       .WillOnce(Invoke(&stream4_blocker, &StreamBlocker::MarkWriteBlocked));
 484
 485   session_.OnCanWrite();
 486   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 487   EXPECT_FALSE(session_.HasPendingHandshake());  // Crypto stream wrote.
 488 }
 489
 490 TEST_P(QuicSessionTest, OnCanWriteWithClosedStream) {
 491   TestStream* stream2 = session_.CreateOutgoingDataStream();
 492   TestStream* stream4 = session_.CreateOutgoingDataStream();
 493   TestStream* stream6 = session_.CreateOutgoingDataStream();
 494
 495   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 496   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 497   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 498   CloseStream(stream6->id());
 499
 500   InSequence s;
 501   EXPECT_CALL(*stream2, OnCanWrite());
 502   EXPECT_CALL(*stream4, OnCanWrite());
 503   session_.OnCanWrite();
 504   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 505 }
 506
 507 TEST_P(QuicSessionTest, OnCanWriteLimitsNumWritesIfFlowControlBlocked) {
 508   // Ensure connection level flow control blockage.
 509   QuicFlowControllerPeer::SetSendWindowOffset(session_.flow_controller(), 0);
 510   EXPECT_TRUE(session_.flow_controller()->IsBlocked());
 511   EXPECT_TRUE(session_.IsConnectionFlowControlBlocked());
 512   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 513
 514   // Mark the crypto and headers streams as write blocked, we expect them to be
 515   // allowed to write later.
 516   session_.MarkWriteBlocked(kCryptoStreamId, kHighestPriority);
 517   session_.MarkWriteBlocked(kHeadersStreamId, kHighestPriority);
 518
 519   // Create a data stream, and although it is write blocked we never expect it
 520   // to be allowed to write as we are connection level flow control blocked.
 521   TestStream* stream = session_.CreateOutgoingDataStream();
 522   session_.MarkWriteBlocked(stream->id(), kSomeMiddlePriority);
 523   EXPECT_CALL(*stream, OnCanWrite()).Times(0);
 524
 525   // The crypto and headers streams should be called even though we are
 526   // connection flow control blocked.
 527   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 528   EXPECT_CALL(*crypto_stream, OnCanWrite()).Times(1);
 529   TestHeadersStream* headers_stream = new TestHeadersStream(&session_);
 530   QuicSessionPeer::SetHeadersStream(&session_, headers_stream);
 531   EXPECT_CALL(*headers_stream, OnCanWrite()).Times(1);
 532
 533   session_.OnCanWrite();
 534   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 535 }
 536
 537 TEST_P(QuicSessionTest, SendGoAway) {
 538   EXPECT_CALL(*connection_,
 539               SendGoAway(QUIC_PEER_GOING_AWAY, 0u, "Going Away."));
 540   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 541   EXPECT_TRUE(session_.goaway_sent());
 542
 543   EXPECT_CALL(*connection_,
 544               SendRstStream(3u, QUIC_STREAM_PEER_GOING_AWAY, 0)).Times(0);
 545   EXPECT_TRUE(session_.GetIncomingDataStream(3u));
 546 }
 547
 548 TEST_P(QuicSessionTest, DoNotSendGoAwayTwice) {
 549   EXPECT_CALL(*connection_,
 550               SendGoAway(QUIC_PEER_GOING_AWAY, 0u, "Going Away.")).Times(1);
 551   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 552   EXPECT_TRUE(session_.goaway_sent());
 553   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 554 }
 555
 556 TEST_P(QuicSessionTest, IncreasedTimeoutAfterCryptoHandshake) {
 557   EXPECT_EQ(kInitialIdleTimeoutSecs + 3,
 558             QuicConnectionPeer::GetNetworkTimeout(connection_).ToSeconds());
 559   CryptoHandshakeMessage msg;
 560   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 561   EXPECT_EQ(kMaximumIdleTimeoutSecs + 3,
 562             QuicConnectionPeer::GetNetworkTimeout(connection_).ToSeconds());
 563 }
 564
 565 TEST_P(QuicSessionTest, RstStreamBeforeHeadersDecompressed) {
 566   // Send two bytes of payload.
 567   QuicStreamFrame data1(kClientDataStreamId1, false, 0, MakeIOVector("HT"));
 568   vector<QuicStreamFrame> frames;
 569   frames.push_back(data1);
 570   session_.OnStreamFrames(frames);
 571   EXPECT_EQ(1u, session_.GetNumOpenStreams());
 572
 573   EXPECT_CALL(*connection_, SendRstStream(kClientDataStreamId1, _, _));
 574   QuicRstStreamFrame rst1(kClientDataStreamId1, QUIC_STREAM_NO_ERROR, 0);
 575   session_.OnRstStream(rst1);
 576   EXPECT_EQ(0u, session_.GetNumOpenStreams());
 577   // Connection should remain alive.
 578   EXPECT_TRUE(connection_->connected());
 579 }
 580
 581 TEST_P(QuicSessionTest, MultipleRstStreamsCauseSingleConnectionClose) {
 582   // If multiple invalid reset stream frames arrive in a single packet, this
 583   // should trigger a connection close. However there is no need to send
 584   // multiple connection close frames.
 585
 586   // Create valid stream.
 587   QuicStreamFrame data1(kClientDataStreamId1, false, 0, MakeIOVector("HT"));
 588   vector<QuicStreamFrame> frames;
 589   frames.push_back(data1);
 590   session_.OnStreamFrames(frames);
 591   EXPECT_EQ(1u, session_.GetNumOpenStreams());
 592
 593   // Process first invalid stream reset, resulting in the connection being
 594   // closed.
 595   EXPECT_CALL(*connection_, SendConnectionClose(QUIC_INVALID_STREAM_ID))
 596       .Times(1);
 597   QuicStreamId kLargeInvalidStreamId = 99999999;
 598   QuicRstStreamFrame rst1(kLargeInvalidStreamId, QUIC_STREAM_NO_ERROR, 0);
 599   session_.OnRstStream(rst1);
 600   QuicConnectionPeer::CloseConnection(connection_);
 601
 602   // Processing of second invalid stream reset should not result in the
 603   // connection being closed for a second time.
 604   QuicRstStreamFrame rst2(kLargeInvalidStreamId, QUIC_STREAM_NO_ERROR, 0);
 605   session_.OnRstStream(rst2);
 606 }
 607
 608 TEST_P(QuicSessionTest, HandshakeUnblocksFlowControlBlockedStream) {
 609   // Test that if a stream is flow control blocked, then on receipt of the SHLO
 610   // containing a suitable send window offset, the stream becomes unblocked.
 611
 612   // Ensure that Writev consumes all the data it is given (simulate no socket
 613   // blocking).
 614   session_.set_writev_consumes_all_data(true);
 615
 616   // Create a stream, and send enough data to make it flow control blocked.
 617   TestStream* stream2 = session_.CreateOutgoingDataStream();
 618   string body(kMinimumFlowControlSendWindow, '.');
 619   EXPECT_FALSE(stream2->flow_controller()->IsBlocked());
 620   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 621   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 622   EXPECT_CALL(*connection_, SendBlocked(stream2->id()));
 623   EXPECT_CALL(*connection_, SendBlocked(0));
 624   stream2->SendBody(body, false);
 625   EXPECT_TRUE(stream2->flow_controller()->IsBlocked());
 626   EXPECT_TRUE(session_.IsConnectionFlowControlBlocked());
 627   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 628
 629   // The handshake message will call OnCanWrite, so the stream can resume
 630   // writing.
 631   EXPECT_CALL(*stream2, OnCanWrite());
 632   // Now complete the crypto handshake, resulting in an increased flow control
 633   // send window.
 634   CryptoHandshakeMessage msg;
 635   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 636
 637   // Stream is now unblocked.
 638   EXPECT_FALSE(stream2->flow_controller()->IsBlocked());
 639   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 640   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 641 }
 642
 643 TEST_P(QuicSessionTest, HandshakeUnblocksFlowControlBlockedCryptoStream) {
 644   // Test that if the crypto stream is flow control blocked, then if the SHLO
 645   // contains a larger send window offset, the stream becomes unblocked.
 646   session_.set_writev_consumes_all_data(true);
 647   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 648   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 649   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 650   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 651   QuicHeadersStream* headers_stream =
 652       QuicSessionPeer::GetHeadersStream(&session_);
 653   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 654   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 655   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 656   // Write until the crypto stream is flow control blocked.
 657   EXPECT_CALL(*connection_, SendBlocked(kCryptoStreamId));
 658   int i = 0;
 659   while (!crypto_stream->flow_controller()->IsBlocked() && i < 1000) {
 660     EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 661     EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 662     QuicConfig config;
 663     CryptoHandshakeMessage crypto_message;
 664     config.ToHandshakeMessage(&crypto_message);
 665     crypto_stream->SendHandshakeMessage(crypto_message);
 666     ++i;
 667   }
 668   EXPECT_TRUE(crypto_stream->flow_controller()->IsBlocked());
 669   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 670   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 671   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 672   EXPECT_FALSE(session_.HasDataToWrite());
 673   EXPECT_TRUE(crypto_stream->HasBufferedData());
 674
 675   // The handshake message will call OnCanWrite, so the stream can
 676   // resume writing.
 677   EXPECT_CALL(*crypto_stream, OnCanWrite());
 678   // Now complete the crypto handshake, resulting in an increased flow control
 679   // send window.
 680   CryptoHandshakeMessage msg;
 681   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 682
 683   // Stream is now unblocked and will no longer have buffered data.
 684   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 685   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 686   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 687 }
 688
 689 TEST_P(QuicSessionTest, HandshakeUnblocksFlowControlBlockedHeadersStream) {
 690   // Test that if the header stream is flow control blocked, then if the SHLO
 691   // contains a larger send window offset, the stream becomes unblocked.
 692   session_.set_writev_consumes_all_data(true);
 693   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 694   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 695   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 696   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 697   QuicHeadersStream* headers_stream =
 698       QuicSessionPeer::GetHeadersStream(&session_);
 699   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 700   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 701   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 702   QuicStreamId stream_id = 5;
 703   // Write until the header stream is flow control blocked.
 704   EXPECT_CALL(*connection_, SendBlocked(kHeadersStreamId));
 705   SpdyHeaderBlock headers;
 706   while (!headers_stream->flow_controller()->IsBlocked() && stream_id < 2000) {
 707     EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 708     EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 709     headers["header"] = base::Uint64ToString(base::RandUint64()) +
 710         base::Uint64ToString(base::RandUint64()) +
 711         base::Uint64ToString(base::RandUint64());
 712     headers_stream->WriteHeaders(stream_id, headers, true, 0, nullptr);
 713     stream_id += 2;
 714   }
 715   // Write once more to ensure that the headers stream has buffered data. The
 716   // random headers may have exactly filled the flow control window.
 717   headers_stream->WriteHeaders(stream_id, headers, true, 0, nullptr);
 718   EXPECT_TRUE(headers_stream->HasBufferedData());
 719
 720   EXPECT_TRUE(headers_stream->flow_controller()->IsBlocked());
 721   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 722   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 723   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 724   EXPECT_FALSE(session_.HasDataToWrite());
 725
 726   // Now complete the crypto handshake, resulting in an increased flow control
 727   // send window.
 728   CryptoHandshakeMessage msg;
 729   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 730
 731   // Stream is now unblocked and will no longer have buffered data.
 732   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 733   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 734   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 735   EXPECT_FALSE(headers_stream->HasBufferedData());
 736 }
 737
 738 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingRstOutOfOrder) {
 739   // Test that when we receive an out of order stream RST we correctly adjust
 740   // our connection level flow control receive window.
 741   // On close, the stream should mark as consumed all bytes between the highest
 742   // byte consumed so far and the final byte offset from the RST frame.
 743   TestStream* stream = session_.CreateOutgoingDataStream();
 744
 745   const QuicStreamOffset kByteOffset =
 746       1 + kInitialSessionFlowControlWindowForTest / 2;
 747
 748   // Expect no stream WINDOW_UPDATE frames, as stream read side closed.
 749   EXPECT_CALL(*connection_, SendWindowUpdate(stream->id(), _)).Times(0);
 750   // We do expect a connection level WINDOW_UPDATE when the stream is reset.
 751   EXPECT_CALL(*connection_,
 752               SendWindowUpdate(0, kInitialSessionFlowControlWindowForTest +
 753                                       kByteOffset)).Times(1);
 754
 755   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 756   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 757                                kByteOffset);
 758   session_.OnRstStream(rst_frame);
 759   session_.PostProcessAfterData();
 760   EXPECT_EQ(kByteOffset, session_.flow_controller()->bytes_consumed());
 761 }
 762
 763 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingFinAndLocalReset) {
 764   // Test the situation where we receive a FIN on a stream, and before we fully
 765   // consume all the data from the sequencer buffer we locally RST the stream.
 766   // The bytes between highest consumed byte, and the final byte offset that we
 767   // determined when the FIN arrived, should be marked as consumed at the
 768   // connection level flow controller when the stream is reset.
 769   TestStream* stream = session_.CreateOutgoingDataStream();
 770
 771   const QuicStreamOffset kByteOffset =
 772       kInitialSessionFlowControlWindowForTest / 2;
 773   QuicStreamFrame frame(stream->id(), true, kByteOffset, IOVector());
 774   vector<QuicStreamFrame> frames;
 775   frames.push_back(frame);
 776   session_.OnStreamFrames(frames);
 777   session_.PostProcessAfterData();
 778   EXPECT_TRUE(connection_->connected());
 779
 780   EXPECT_EQ(0u, stream->flow_controller()->bytes_consumed());
 781   EXPECT_EQ(kByteOffset,
 782             stream->flow_controller()->highest_received_byte_offset());
 783
 784   // Reset stream locally.
 785   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 786   stream->Reset(QUIC_STREAM_CANCELLED);
 787   EXPECT_EQ(kByteOffset, session_.flow_controller()->bytes_consumed());
 788 }
 789
 790 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingFinAfterRst) {
 791   // Test that when we RST the stream (and tear down stream state), and then
 792   // receive a FIN from the peer, we correctly adjust our connection level flow
 793   // control receive window.
 794
 795   // Connection starts with some non-zero highest received byte offset,
 796   // due to other active streams.
 797   const uint64 kInitialConnectionBytesConsumed = 567;
 798   const uint64 kInitialConnectionHighestReceivedOffset = 1234;
 799   EXPECT_LT(kInitialConnectionBytesConsumed,
 800             kInitialConnectionHighestReceivedOffset);
 801   session_.flow_controller()->UpdateHighestReceivedOffset(
 802       kInitialConnectionHighestReceivedOffset);
 803   session_.flow_controller()->AddBytesConsumed(kInitialConnectionBytesConsumed);
 804
 805   // Reset our stream: this results in the stream being closed locally.
 806   TestStream* stream = session_.CreateOutgoingDataStream();
 807   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 808   stream->Reset(QUIC_STREAM_CANCELLED);
 809
 810   // Now receive a response from the peer with a FIN. We should handle this by
 811   // adjusting the connection level flow control receive window to take into
 812   // account the total number of bytes sent by the peer.
 813   const QuicStreamOffset kByteOffset = 5678;
 814   string body = "hello";
 815   IOVector data = MakeIOVector(body);
 816   QuicStreamFrame frame(stream->id(), true, kByteOffset, data);
 817   vector<QuicStreamFrame> frames;
 818   frames.push_back(frame);
 819   session_.OnStreamFrames(frames);
 820
 821   QuicStreamOffset total_stream_bytes_sent_by_peer =
 822       kByteOffset + body.length();
 823   EXPECT_EQ(kInitialConnectionBytesConsumed + total_stream_bytes_sent_by_peer,
 824             session_.flow_controller()->bytes_consumed());
 825   EXPECT_EQ(
 826       kInitialConnectionHighestReceivedOffset + total_stream_bytes_sent_by_peer,
 827       session_.flow_controller()->highest_received_byte_offset());
 828 }
 829
 830 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingRstAfterRst) {
 831   // Test that when we RST the stream (and tear down stream state), and then
 832   // receive a RST from the peer, we correctly adjust our connection level flow
 833   // control receive window.
 834
 835   // Connection starts with some non-zero highest received byte offset,
 836   // due to other active streams.
 837   const uint64 kInitialConnectionBytesConsumed = 567;
 838   const uint64 kInitialConnectionHighestReceivedOffset = 1234;
 839   EXPECT_LT(kInitialConnectionBytesConsumed,
 840             kInitialConnectionHighestReceivedOffset);
 841   session_.flow_controller()->UpdateHighestReceivedOffset(
 842       kInitialConnectionHighestReceivedOffset);
 843   session_.flow_controller()->AddBytesConsumed(kInitialConnectionBytesConsumed);
 844
 845   // Reset our stream: this results in the stream being closed locally.
 846   TestStream* stream = session_.CreateOutgoingDataStream();
 847   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 848   stream->Reset(QUIC_STREAM_CANCELLED);
 849
 850   // Now receive a RST from the peer. We should handle this by adjusting the
 851   // connection level flow control receive window to take into account the total
 852   // number of bytes sent by the peer.
 853   const QuicStreamOffset kByteOffset = 5678;
 854   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 855                                kByteOffset);
 856   session_.OnRstStream(rst_frame);
 857
 858   EXPECT_EQ(kInitialConnectionBytesConsumed + kByteOffset,
 859             session_.flow_controller()->bytes_consumed());
 860   EXPECT_EQ(kInitialConnectionHighestReceivedOffset + kByteOffset,
 861             session_.flow_controller()->highest_received_byte_offset());
 862 }
 863
 864 TEST_P(QuicSessionTest, InvalidStreamFlowControlWindowInHandshake) {
 865   // Test that receipt of an invalid (< default) stream flow control window from
 866   // the peer results in the connection being torn down.
 867   uint32 kInvalidWindow = kMinimumFlowControlSendWindow - 1;
 868   QuicConfigPeer::SetReceivedInitialStreamFlowControlWindow(session_.config(),
 869                                                             kInvalidWindow);
 870
 871   EXPECT_CALL(*connection_,
 872               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW));
 873   session_.OnConfigNegotiated();
 874 }
 875
 876 TEST_P(QuicSessionTest, InvalidSessionFlowControlWindowInHandshake) {
 877   // Test that receipt of an invalid (< default) session flow control window
 878   // from the peer results in the connection being torn down.
 879   uint32 kInvalidWindow = kMinimumFlowControlSendWindow - 1;
 880   QuicConfigPeer::SetReceivedInitialSessionFlowControlWindow(session_.config(),
 881                                                              kInvalidWindow);
 882
 883   EXPECT_CALL(*connection_,
 884               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW));
 885   session_.OnConfigNegotiated();
 886 }
 887
 888 TEST_P(QuicSessionTest, FlowControlWithInvalidFinalOffset) {
 889   // Test that if we receive a stream RST with a highest byte offset that
 890   // violates flow control, that we close the connection.
 891   const uint64 kLargeOffset = kInitialSessionFlowControlWindowForTest + 1;
 892   EXPECT_CALL(*connection_,
 893               SendConnectionClose(QUIC_FLOW_CONTROL_RECEIVED_TOO_MUCH_DATA))
 894       .Times(2);
 895
 896   // Check that stream frame + FIN results in connection close.
 897   TestStream* stream = session_.CreateOutgoingDataStream();
 898   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 899   stream->Reset(QUIC_STREAM_CANCELLED);
 900   QuicStreamFrame frame(stream->id(), true, kLargeOffset, IOVector());
 901   vector<QuicStreamFrame> frames;
 902   frames.push_back(frame);
 903   session_.OnStreamFrames(frames);
 904
 905   // Check that RST results in connection close.
 906   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 907                                kLargeOffset);
 908   session_.OnRstStream(rst_frame);
 909 }
 910
 911 TEST_P(QuicSessionTest, WindowUpdateUnblocksHeadersStream) {
 912   // Test that a flow control blocked headers stream gets unblocked on recipt of
 913   // a WINDOW_UPDATE frame. Regression test for b/17413860.
 914
 915   // Set the headers stream to be flow control blocked.
 916   QuicHeadersStream* headers_stream =
 917       QuicSessionPeer::GetHeadersStream(&session_);
 918   QuicFlowControllerPeer::SetSendWindowOffset(headers_stream->flow_controller(),
 919                                               0);
 920   EXPECT_TRUE(headers_stream->flow_controller()->IsBlocked());
 921   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 922   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 923
 924   // Unblock the headers stream by supplying a WINDOW_UPDATE.
 925   QuicWindowUpdateFrame window_update_frame(headers_stream->id(),
 926                                             2 * kMinimumFlowControlSendWindow);
 927   vector<QuicWindowUpdateFrame> frames;
 928   frames.push_back(window_update_frame);
 929   session_.OnWindowUpdateFrames(frames);
 930   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 931   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 932   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 933 }
 934
 935 TEST_P(QuicSessionTest, TooManyUnfinishedStreamsCauseConnectionClose) {
 936   // If a buggy/malicious peer creates too many streams that are not ended with
 937   // a FIN or RST then we send a connection close.
 938   EXPECT_CALL(*connection_,
 939               SendConnectionClose(QUIC_TOO_MANY_UNFINISHED_STREAMS)).Times(1);
 940
 941   const int kMaxStreams = 5;
 942   QuicSessionPeer::SetMaxOpenStreams(&session_, kMaxStreams);
 943
 944   // Create kMaxStreams + 1 data streams, and close them all without receiving a
 945   // FIN or a RST from the client.
 946   const int kFirstStreamId = kClientDataStreamId1;
 947   const int kFinalStreamId = kClientDataStreamId1 + 2 * kMaxStreams + 1;
 948   for (int i = kFirstStreamId; i < kFinalStreamId; i += 2) {
 949     QuicStreamFrame data1(i, false, 0, MakeIOVector("HT"));
 950     vector<QuicStreamFrame> frames;
 951     frames.push_back(data1);
 952     session_.OnStreamFrames(frames);
 953     EXPECT_EQ(1u, session_.GetNumOpenStreams());
 954     EXPECT_CALL(*connection_, SendRstStream(i, _, _));
 955     session_.CloseStream(i);
 956   }
 957
 958   // Called after any new data is received by the session, and triggers the call
 959   // to close the connection.
 960   session_.PostProcessAfterData();
 961 }
 962
 963 }  // namespace
 964 }  // namespace test
 965 }  // namespace net