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, DecompressionError) {
 321   QuicHeadersStream* stream = QuicSessionPeer::GetHeadersStream(&session_);
 322   if (version() > QUIC_VERSION_23) {
 323     // This test does not apply to HPACK compression.
 324     return;
 325   }
 326   const unsigned char data[] = {
 327     0x80, 0x03, 0x00, 0x01,  // SPDY/3 SYN_STREAM frame
 328     0x00, 0x00, 0x00, 0x25,  // flags/length
 329     0x00, 0x00, 0x00, 0x05,  // stream id
 330     0x00, 0x00, 0x00, 0x00,  // associated stream id
 331     0x00, 0x00,
 332     'a',  'b',  'c',  'd'    // invalid compressed data
 333   };
 334   EXPECT_CALL(*connection_, SendConnectionCloseWithDetails(
 335                                 QUIC_INVALID_HEADERS_STREAM_DATA,
 336                                 "SPDY framing error: DECOMPRESS_FAILURE"));
 337   stream->ProcessRawData(reinterpret_cast<const char*>(data),
 338                          arraysize(data));
 339 }
 340
 341 TEST_P(QuicSessionTest, DebugDFatalIfMarkingClosedStreamWriteBlocked) {
 342   TestStream* stream2 = session_.CreateOutgoingDataStream();
 343   QuicStreamId kClosedStreamId = stream2->id();
 344   // Close the stream.
 345   EXPECT_CALL(*connection_, SendRstStream(kClosedStreamId, _, _));
 346   stream2->Reset(QUIC_BAD_APPLICATION_PAYLOAD);
 347   EXPECT_DEBUG_DFATAL(
 348       session_.MarkWriteBlocked(kClosedStreamId, kSomeMiddlePriority),
 349       "Marking unknown stream 2 blocked.");
 350 }
 351
 352 TEST_P(QuicSessionTest, DebugDFatalIfMarkWriteBlockedCalledWithWrongPriority) {
 353   const QuicPriority kDifferentPriority = 0;
 354
 355   TestStream* stream2 = session_.CreateOutgoingDataStream();
 356   EXPECT_NE(kDifferentPriority, stream2->EffectivePriority());
 357   EXPECT_DEBUG_DFATAL(
 358       session_.MarkWriteBlocked(stream2->id(), kDifferentPriority),
 359       "Priorities do not match.  Got: 0 Expected: 3");
 360 }
 361
 362 TEST_P(QuicSessionTest, OnCanWrite) {
 363   TestStream* stream2 = session_.CreateOutgoingDataStream();
 364   TestStream* stream4 = session_.CreateOutgoingDataStream();
 365   TestStream* stream6 = session_.CreateOutgoingDataStream();
 366
 367   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 368   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 369   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 370
 371   InSequence s;
 372   StreamBlocker stream2_blocker(&session_, stream2->id());
 373   // Reregister, to test the loop limit.
 374   EXPECT_CALL(*stream2, OnCanWrite())
 375       .WillOnce(Invoke(&stream2_blocker, &StreamBlocker::MarkWriteBlocked));
 376   EXPECT_CALL(*stream6, OnCanWrite());
 377   EXPECT_CALL(*stream4, OnCanWrite());
 378   session_.OnCanWrite();
 379   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 380 }
 381
 382 TEST_P(QuicSessionTest, OnCanWriteBundlesStreams) {
 383   // Drive congestion control manually.
 384   MockSendAlgorithm* send_algorithm = new StrictMock<MockSendAlgorithm>;
 385   QuicConnectionPeer::SetSendAlgorithm(session_.connection(), send_algorithm);
 386
 387   TestStream* stream2 = session_.CreateOutgoingDataStream();
 388   TestStream* stream4 = session_.CreateOutgoingDataStream();
 389   TestStream* stream6 = session_.CreateOutgoingDataStream();
 390
 391   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 392   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 393   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 394
 395   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillRepeatedly(
 396       Return(QuicTime::Delta::Zero()));
 397   EXPECT_CALL(*send_algorithm, GetCongestionWindow())
 398       .WillRepeatedly(Return(kMaxPacketSize * 10));
 399   EXPECT_CALL(*stream2, OnCanWrite())
 400       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 401           &session_, &TestSession::SendStreamData, stream2->id()))));
 402   EXPECT_CALL(*stream4, OnCanWrite())
 403       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 404           &session_, &TestSession::SendStreamData, stream4->id()))));
 405   EXPECT_CALL(*stream6, OnCanWrite())
 406       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 407           &session_, &TestSession::SendStreamData, stream6->id()))));
 408
 409   // Expect that we only send one packet, the writes from different streams
 410   // should be bundled together.
 411   MockPacketWriter* writer =
 412       static_cast<MockPacketWriter*>(
 413           QuicConnectionPeer::GetWriter(session_.connection()));
 414   EXPECT_CALL(*writer, WritePacket(_, _, _, _)).WillOnce(
 415                   Return(WriteResult(WRITE_STATUS_OK, 0)));
 416   EXPECT_CALL(*send_algorithm, OnPacketSent(_, _, _, _, _)).Times(1);
 417   session_.OnCanWrite();
 418   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 419 }
 420
 421 TEST_P(QuicSessionTest, OnCanWriteCongestionControlBlocks) {
 422   InSequence s;
 423
 424   // Drive congestion control manually.
 425   MockSendAlgorithm* send_algorithm = new StrictMock<MockSendAlgorithm>;
 426   QuicConnectionPeer::SetSendAlgorithm(session_.connection(), send_algorithm);
 427
 428   TestStream* stream2 = session_.CreateOutgoingDataStream();
 429   TestStream* stream4 = session_.CreateOutgoingDataStream();
 430   TestStream* stream6 = session_.CreateOutgoingDataStream();
 431
 432   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 433   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 434   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 435
 436   StreamBlocker stream2_blocker(&session_, stream2->id());
 437   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 438       QuicTime::Delta::Zero()));
 439   EXPECT_CALL(*stream2, OnCanWrite());
 440   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 441       QuicTime::Delta::Zero()));
 442   EXPECT_CALL(*stream6, OnCanWrite());
 443   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 444       QuicTime::Delta::Infinite()));
 445   // stream4->OnCanWrite is not called.
 446
 447   session_.OnCanWrite();
 448   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 449
 450   // Still congestion-control blocked.
 451   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 452       QuicTime::Delta::Infinite()));
 453   session_.OnCanWrite();
 454   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 455
 456   // stream4->OnCanWrite is called once the connection stops being
 457   // congestion-control blocked.
 458   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 459       QuicTime::Delta::Zero()));
 460   EXPECT_CALL(*stream4, OnCanWrite());
 461   session_.OnCanWrite();
 462   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 463 }
 464
 465 TEST_P(QuicSessionTest, BufferedHandshake) {
 466   EXPECT_FALSE(session_.HasPendingHandshake());  // Default value.
 467
 468   // Test that blocking other streams does not change our status.
 469   TestStream* stream2 = session_.CreateOutgoingDataStream();
 470   StreamBlocker stream2_blocker(&session_, stream2->id());
 471   stream2_blocker.MarkWriteBlocked();
 472   EXPECT_FALSE(session_.HasPendingHandshake());
 473
 474   TestStream* stream3 = session_.CreateOutgoingDataStream();
 475   StreamBlocker stream3_blocker(&session_, stream3->id());
 476   stream3_blocker.MarkWriteBlocked();
 477   EXPECT_FALSE(session_.HasPendingHandshake());
 478
 479   // Blocking (due to buffering of) the Crypto stream is detected.
 480   session_.MarkWriteBlocked(kCryptoStreamId, kHighestPriority);
 481   EXPECT_TRUE(session_.HasPendingHandshake());
 482
 483   TestStream* stream4 = session_.CreateOutgoingDataStream();
 484   StreamBlocker stream4_blocker(&session_, stream4->id());
 485   stream4_blocker.MarkWriteBlocked();
 486   EXPECT_TRUE(session_.HasPendingHandshake());
 487
 488   InSequence s;
 489   // Force most streams to re-register, which is common scenario when we block
 490   // the Crypto stream, and only the crypto stream can "really" write.
 491
 492   // Due to prioritization, we *should* be asked to write the crypto stream
 493   // first.
 494   // Don't re-register the crypto stream (which signals complete writing).
 495   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 496   EXPECT_CALL(*crypto_stream, OnCanWrite());
 497
 498   // Re-register all other streams, to show they weren't able to proceed.
 499   EXPECT_CALL(*stream2, OnCanWrite())
 500       .WillOnce(Invoke(&stream2_blocker, &StreamBlocker::MarkWriteBlocked));
 501   EXPECT_CALL(*stream3, OnCanWrite())
 502       .WillOnce(Invoke(&stream3_blocker, &StreamBlocker::MarkWriteBlocked));
 503   EXPECT_CALL(*stream4, OnCanWrite())
 504       .WillOnce(Invoke(&stream4_blocker, &StreamBlocker::MarkWriteBlocked));
 505
 506   session_.OnCanWrite();
 507   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 508   EXPECT_FALSE(session_.HasPendingHandshake());  // Crypto stream wrote.
 509 }
 510
 511 TEST_P(QuicSessionTest, OnCanWriteWithClosedStream) {
 512   TestStream* stream2 = session_.CreateOutgoingDataStream();
 513   TestStream* stream4 = session_.CreateOutgoingDataStream();
 514   TestStream* stream6 = session_.CreateOutgoingDataStream();
 515
 516   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 517   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 518   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 519   CloseStream(stream6->id());
 520
 521   InSequence s;
 522   EXPECT_CALL(*stream2, OnCanWrite());
 523   EXPECT_CALL(*stream4, OnCanWrite());
 524   session_.OnCanWrite();
 525   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 526 }
 527
 528 TEST_P(QuicSessionTest, OnCanWriteLimitsNumWritesIfFlowControlBlocked) {
 529   // Ensure connection level flow control blockage.
 530   QuicFlowControllerPeer::SetSendWindowOffset(session_.flow_controller(), 0);
 531   EXPECT_TRUE(session_.flow_controller()->IsBlocked());
 532   EXPECT_TRUE(session_.IsConnectionFlowControlBlocked());
 533   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 534
 535   // Mark the crypto and headers streams as write blocked, we expect them to be
 536   // allowed to write later.
 537   session_.MarkWriteBlocked(kCryptoStreamId, kHighestPriority);
 538   session_.MarkWriteBlocked(kHeadersStreamId, kHighestPriority);
 539
 540   // Create a data stream, and although it is write blocked we never expect it
 541   // to be allowed to write as we are connection level flow control blocked.
 542   TestStream* stream = session_.CreateOutgoingDataStream();
 543   session_.MarkWriteBlocked(stream->id(), kSomeMiddlePriority);
 544   EXPECT_CALL(*stream, OnCanWrite()).Times(0);
 545
 546   // The crypto and headers streams should be called even though we are
 547   // connection flow control blocked.
 548   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 549   EXPECT_CALL(*crypto_stream, OnCanWrite()).Times(1);
 550   TestHeadersStream* headers_stream = new TestHeadersStream(&session_);
 551   QuicSessionPeer::SetHeadersStream(&session_, headers_stream);
 552   EXPECT_CALL(*headers_stream, OnCanWrite()).Times(1);
 553
 554   session_.OnCanWrite();
 555   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 556 }
 557
 558 TEST_P(QuicSessionTest, SendGoAway) {
 559   EXPECT_CALL(*connection_,
 560               SendGoAway(QUIC_PEER_GOING_AWAY, 0u, "Going Away."));
 561   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 562   EXPECT_TRUE(session_.goaway_sent());
 563
 564   EXPECT_CALL(*connection_,
 565               SendRstStream(3u, QUIC_STREAM_PEER_GOING_AWAY, 0)).Times(0);
 566   EXPECT_TRUE(session_.GetIncomingDataStream(3u));
 567 }
 568
 569 TEST_P(QuicSessionTest, DoNotSendGoAwayTwice) {
 570   EXPECT_CALL(*connection_,
 571               SendGoAway(QUIC_PEER_GOING_AWAY, 0u, "Going Away.")).Times(1);
 572   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 573   EXPECT_TRUE(session_.goaway_sent());
 574   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 575 }
 576
 577 TEST_P(QuicSessionTest, IncreasedTimeoutAfterCryptoHandshake) {
 578   EXPECT_EQ(kInitialIdleTimeoutSecs + 3,
 579             QuicConnectionPeer::GetNetworkTimeout(connection_).ToSeconds());
 580   CryptoHandshakeMessage msg;
 581   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 582   EXPECT_EQ(kMaximumIdleTimeoutSecs + 3,
 583             QuicConnectionPeer::GetNetworkTimeout(connection_).ToSeconds());
 584 }
 585
 586 TEST_P(QuicSessionTest, RstStreamBeforeHeadersDecompressed) {
 587   // Send two bytes of payload.
 588   QuicStreamFrame data1(kClientDataStreamId1, false, 0, MakeIOVector("HT"));
 589   vector<QuicStreamFrame> frames;
 590   frames.push_back(data1);
 591   session_.OnStreamFrames(frames);
 592   EXPECT_EQ(1u, session_.GetNumOpenStreams());
 593
 594   EXPECT_CALL(*connection_, SendRstStream(kClientDataStreamId1, _, _));
 595   QuicRstStreamFrame rst1(kClientDataStreamId1, QUIC_STREAM_NO_ERROR, 0);
 596   session_.OnRstStream(rst1);
 597   EXPECT_EQ(0u, session_.GetNumOpenStreams());
 598   // Connection should remain alive.
 599   EXPECT_TRUE(connection_->connected());
 600 }
 601
 602 TEST_P(QuicSessionTest, MultipleRstStreamsCauseSingleConnectionClose) {
 603   // If multiple invalid reset stream frames arrive in a single packet, this
 604   // should trigger a connection close. However there is no need to send
 605   // multiple connection close frames.
 606
 607   // Create valid stream.
 608   QuicStreamFrame data1(kClientDataStreamId1, false, 0, MakeIOVector("HT"));
 609   vector<QuicStreamFrame> frames;
 610   frames.push_back(data1);
 611   session_.OnStreamFrames(frames);
 612   EXPECT_EQ(1u, session_.GetNumOpenStreams());
 613
 614   // Process first invalid stream reset, resulting in the connection being
 615   // closed.
 616   EXPECT_CALL(*connection_, SendConnectionClose(QUIC_INVALID_STREAM_ID))
 617       .Times(1);
 618   QuicStreamId kLargeInvalidStreamId = 99999999;
 619   QuicRstStreamFrame rst1(kLargeInvalidStreamId, QUIC_STREAM_NO_ERROR, 0);
 620   session_.OnRstStream(rst1);
 621   QuicConnectionPeer::CloseConnection(connection_);
 622
 623   // Processing of second invalid stream reset should not result in the
 624   // connection being closed for a second time.
 625   QuicRstStreamFrame rst2(kLargeInvalidStreamId, QUIC_STREAM_NO_ERROR, 0);
 626   session_.OnRstStream(rst2);
 627 }
 628
 629 TEST_P(QuicSessionTest, HandshakeUnblocksFlowControlBlockedStream) {
 630   // Test that if a stream is flow control blocked, then on receipt of the SHLO
 631   // containing a suitable send window offset, the stream becomes unblocked.
 632
 633   // Ensure that Writev consumes all the data it is given (simulate no socket
 634   // blocking).
 635   session_.set_writev_consumes_all_data(true);
 636
 637   // Create a stream, and send enough data to make it flow control blocked.
 638   TestStream* stream2 = session_.CreateOutgoingDataStream();
 639   string body(kMinimumFlowControlSendWindow, '.');
 640   EXPECT_FALSE(stream2->flow_controller()->IsBlocked());
 641   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 642   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 643   EXPECT_CALL(*connection_, SendBlocked(stream2->id()));
 644   EXPECT_CALL(*connection_, SendBlocked(0));
 645   stream2->SendBody(body, false);
 646   EXPECT_TRUE(stream2->flow_controller()->IsBlocked());
 647   EXPECT_TRUE(session_.IsConnectionFlowControlBlocked());
 648   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 649
 650   // The handshake message will call OnCanWrite, so the stream can resume
 651   // writing.
 652   EXPECT_CALL(*stream2, OnCanWrite());
 653   // Now complete the crypto handshake, resulting in an increased flow control
 654   // send window.
 655   CryptoHandshakeMessage msg;
 656   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 657
 658   // Stream is now unblocked.
 659   EXPECT_FALSE(stream2->flow_controller()->IsBlocked());
 660   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 661   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 662 }
 663
 664 TEST_P(QuicSessionTest, HandshakeUnblocksFlowControlBlockedCryptoStream) {
 665   // Test that if the crypto stream is flow control blocked, then if the SHLO
 666   // contains a larger send window offset, the stream becomes unblocked.
 667   session_.set_writev_consumes_all_data(true);
 668   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 669   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 670   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 671   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 672   QuicHeadersStream* headers_stream =
 673       QuicSessionPeer::GetHeadersStream(&session_);
 674   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 675   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 676   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 677   // Write until the crypto stream is flow control blocked.
 678   EXPECT_CALL(*connection_, SendBlocked(kCryptoStreamId));
 679   int i = 0;
 680   while (!crypto_stream->flow_controller()->IsBlocked() && i < 1000) {
 681     EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 682     EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 683     QuicConfig config;
 684     CryptoHandshakeMessage crypto_message;
 685     config.ToHandshakeMessage(&crypto_message);
 686     crypto_stream->SendHandshakeMessage(crypto_message);
 687     ++i;
 688   }
 689   EXPECT_TRUE(crypto_stream->flow_controller()->IsBlocked());
 690   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 691   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 692   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 693   EXPECT_FALSE(session_.HasDataToWrite());
 694   EXPECT_TRUE(crypto_stream->HasBufferedData());
 695
 696   // The handshake message will call OnCanWrite, so the stream can
 697   // resume writing.
 698   EXPECT_CALL(*crypto_stream, OnCanWrite());
 699   // Now complete the crypto handshake, resulting in an increased flow control
 700   // send window.
 701   CryptoHandshakeMessage msg;
 702   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 703
 704   // Stream is now unblocked and will no longer have buffered data.
 705   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 706   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 707   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 708 }
 709
 710 TEST_P(QuicSessionTest, HandshakeUnblocksFlowControlBlockedHeadersStream) {
 711   // Test that if the header stream is flow control blocked, then if the SHLO
 712   // contains a larger send window offset, the stream becomes unblocked.
 713   session_.set_writev_consumes_all_data(true);
 714   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 715   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 716   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 717   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 718   QuicHeadersStream* headers_stream =
 719       QuicSessionPeer::GetHeadersStream(&session_);
 720   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 721   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 722   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 723   QuicStreamId stream_id = 5;
 724   // Write until the header stream is flow control blocked.
 725   EXPECT_CALL(*connection_, SendBlocked(kHeadersStreamId));
 726   SpdyHeaderBlock headers;
 727   while (!headers_stream->flow_controller()->IsBlocked() && stream_id < 2000) {
 728     EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 729     EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 730     headers["header"] = base::Uint64ToString(base::RandUint64()) +
 731         base::Uint64ToString(base::RandUint64()) +
 732         base::Uint64ToString(base::RandUint64());
 733     headers_stream->WriteHeaders(stream_id, headers, true, 0, nullptr);
 734     stream_id += 2;
 735   }
 736   // Write once more to ensure that the headers stream has buffered data. The
 737   // random headers may have exactly filled the flow control window.
 738   headers_stream->WriteHeaders(stream_id, headers, true, 0, nullptr);
 739   EXPECT_TRUE(headers_stream->HasBufferedData());
 740
 741   EXPECT_TRUE(headers_stream->flow_controller()->IsBlocked());
 742   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 743   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 744   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 745   EXPECT_FALSE(session_.HasDataToWrite());
 746
 747   // Now complete the crypto handshake, resulting in an increased flow control
 748   // send window.
 749   CryptoHandshakeMessage msg;
 750   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 751
 752   // Stream is now unblocked and will no longer have buffered data.
 753   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 754   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 755   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 756   EXPECT_FALSE(headers_stream->HasBufferedData());
 757 }
 758
 759 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingRstOutOfOrder) {
 760   // Test that when we receive an out of order stream RST we correctly adjust
 761   // our connection level flow control receive window.
 762   // On close, the stream should mark as consumed all bytes between the highest
 763   // byte consumed so far and the final byte offset from the RST frame.
 764   TestStream* stream = session_.CreateOutgoingDataStream();
 765
 766   const QuicStreamOffset kByteOffset =
 767       1 + kInitialSessionFlowControlWindowForTest / 2;
 768
 769   // Expect no stream WINDOW_UPDATE frames, as stream read side closed.
 770   EXPECT_CALL(*connection_, SendWindowUpdate(stream->id(), _)).Times(0);
 771   // We do expect a connection level WINDOW_UPDATE when the stream is reset.
 772   EXPECT_CALL(*connection_,
 773               SendWindowUpdate(0, kInitialSessionFlowControlWindowForTest +
 774                                       kByteOffset)).Times(1);
 775
 776   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 777   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 778                                kByteOffset);
 779   session_.OnRstStream(rst_frame);
 780   session_.PostProcessAfterData();
 781   EXPECT_EQ(kByteOffset, session_.flow_controller()->bytes_consumed());
 782 }
 783
 784 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingFinAndLocalReset) {
 785   // Test the situation where we receive a FIN on a stream, and before we fully
 786   // consume all the data from the sequencer buffer we locally RST the stream.
 787   // The bytes between highest consumed byte, and the final byte offset that we
 788   // determined when the FIN arrived, should be marked as consumed at the
 789   // connection level flow controller when the stream is reset.
 790   TestStream* stream = session_.CreateOutgoingDataStream();
 791
 792   const QuicStreamOffset kByteOffset =
 793       kInitialSessionFlowControlWindowForTest / 2;
 794   QuicStreamFrame frame(stream->id(), true, kByteOffset, IOVector());
 795   vector<QuicStreamFrame> frames;
 796   frames.push_back(frame);
 797   session_.OnStreamFrames(frames);
 798   session_.PostProcessAfterData();
 799   EXPECT_TRUE(connection_->connected());
 800
 801   EXPECT_EQ(0u, stream->flow_controller()->bytes_consumed());
 802   EXPECT_EQ(kByteOffset,
 803             stream->flow_controller()->highest_received_byte_offset());
 804
 805   // Reset stream locally.
 806   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 807   stream->Reset(QUIC_STREAM_CANCELLED);
 808   EXPECT_EQ(kByteOffset, session_.flow_controller()->bytes_consumed());
 809 }
 810
 811 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingFinAfterRst) {
 812   // Test that when we RST the stream (and tear down stream state), and then
 813   // receive a FIN from the peer, we correctly adjust our connection level flow
 814   // control receive window.
 815
 816   // Connection starts with some non-zero highest received byte offset,
 817   // due to other active streams.
 818   const uint64 kInitialConnectionBytesConsumed = 567;
 819   const uint64 kInitialConnectionHighestReceivedOffset = 1234;
 820   EXPECT_LT(kInitialConnectionBytesConsumed,
 821             kInitialConnectionHighestReceivedOffset);
 822   session_.flow_controller()->UpdateHighestReceivedOffset(
 823       kInitialConnectionHighestReceivedOffset);
 824   session_.flow_controller()->AddBytesConsumed(kInitialConnectionBytesConsumed);
 825
 826   // Reset our stream: this results in the stream being closed locally.
 827   TestStream* stream = session_.CreateOutgoingDataStream();
 828   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 829   stream->Reset(QUIC_STREAM_CANCELLED);
 830
 831   // Now receive a response from the peer with a FIN. We should handle this by
 832   // adjusting the connection level flow control receive window to take into
 833   // account the total number of bytes sent by the peer.
 834   const QuicStreamOffset kByteOffset = 5678;
 835   string body = "hello";
 836   IOVector data = MakeIOVector(body);
 837   QuicStreamFrame frame(stream->id(), true, kByteOffset, data);
 838   vector<QuicStreamFrame> frames;
 839   frames.push_back(frame);
 840   session_.OnStreamFrames(frames);
 841
 842   QuicStreamOffset total_stream_bytes_sent_by_peer =
 843       kByteOffset + body.length();
 844   EXPECT_EQ(kInitialConnectionBytesConsumed + total_stream_bytes_sent_by_peer,
 845             session_.flow_controller()->bytes_consumed());
 846   EXPECT_EQ(
 847       kInitialConnectionHighestReceivedOffset + total_stream_bytes_sent_by_peer,
 848       session_.flow_controller()->highest_received_byte_offset());
 849 }
 850
 851 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingRstAfterRst) {
 852   // Test that when we RST the stream (and tear down stream state), and then
 853   // receive a RST from the peer, we correctly adjust our connection level flow
 854   // control receive window.
 855
 856   // Connection starts with some non-zero highest received byte offset,
 857   // due to other active streams.
 858   const uint64 kInitialConnectionBytesConsumed = 567;
 859   const uint64 kInitialConnectionHighestReceivedOffset = 1234;
 860   EXPECT_LT(kInitialConnectionBytesConsumed,
 861             kInitialConnectionHighestReceivedOffset);
 862   session_.flow_controller()->UpdateHighestReceivedOffset(
 863       kInitialConnectionHighestReceivedOffset);
 864   session_.flow_controller()->AddBytesConsumed(kInitialConnectionBytesConsumed);
 865
 866   // Reset our stream: this results in the stream being closed locally.
 867   TestStream* stream = session_.CreateOutgoingDataStream();
 868   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 869   stream->Reset(QUIC_STREAM_CANCELLED);
 870
 871   // Now receive a RST from the peer. We should handle this by adjusting the
 872   // connection level flow control receive window to take into account the total
 873   // number of bytes sent by the peer.
 874   const QuicStreamOffset kByteOffset = 5678;
 875   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 876                                kByteOffset);
 877   session_.OnRstStream(rst_frame);
 878
 879   EXPECT_EQ(kInitialConnectionBytesConsumed + kByteOffset,
 880             session_.flow_controller()->bytes_consumed());
 881   EXPECT_EQ(kInitialConnectionHighestReceivedOffset + kByteOffset,
 882             session_.flow_controller()->highest_received_byte_offset());
 883 }
 884
 885 TEST_P(QuicSessionTest, InvalidStreamFlowControlWindowInHandshake) {
 886   // Test that receipt of an invalid (< default) stream flow control window from
 887   // the peer results in the connection being torn down.
 888   uint32 kInvalidWindow = kMinimumFlowControlSendWindow - 1;
 889   QuicConfigPeer::SetReceivedInitialStreamFlowControlWindow(session_.config(),
 890                                                             kInvalidWindow);
 891
 892   EXPECT_CALL(*connection_,
 893               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW));
 894   session_.OnConfigNegotiated();
 895 }
 896
 897 TEST_P(QuicSessionTest, InvalidSessionFlowControlWindowInHandshake) {
 898   // Test that receipt of an invalid (< default) session flow control window
 899   // from the peer results in the connection being torn down.
 900   uint32 kInvalidWindow = kMinimumFlowControlSendWindow - 1;
 901   QuicConfigPeer::SetReceivedInitialSessionFlowControlWindow(session_.config(),
 902                                                              kInvalidWindow);
 903
 904   EXPECT_CALL(*connection_,
 905               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW));
 906   session_.OnConfigNegotiated();
 907 }
 908
 909 TEST_P(QuicSessionTest, FlowControlWithInvalidFinalOffset) {
 910   // Test that if we receive a stream RST with a highest byte offset that
 911   // violates flow control, that we close the connection.
 912   const uint64 kLargeOffset = kInitialSessionFlowControlWindowForTest + 1;
 913   EXPECT_CALL(*connection_,
 914               SendConnectionClose(QUIC_FLOW_CONTROL_RECEIVED_TOO_MUCH_DATA))
 915       .Times(2);
 916
 917   // Check that stream frame + FIN results in connection close.
 918   TestStream* stream = session_.CreateOutgoingDataStream();
 919   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 920   stream->Reset(QUIC_STREAM_CANCELLED);
 921   QuicStreamFrame frame(stream->id(), true, kLargeOffset, IOVector());
 922   vector<QuicStreamFrame> frames;
 923   frames.push_back(frame);
 924   session_.OnStreamFrames(frames);
 925
 926   // Check that RST results in connection close.
 927   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 928                                kLargeOffset);
 929   session_.OnRstStream(rst_frame);
 930 }
 931
 932 TEST_P(QuicSessionTest, WindowUpdateUnblocksHeadersStream) {
 933   // Test that a flow control blocked headers stream gets unblocked on recipt of
 934   // a WINDOW_UPDATE frame. Regression test for b/17413860.
 935
 936   // Set the headers stream to be flow control blocked.
 937   QuicHeadersStream* headers_stream =
 938       QuicSessionPeer::GetHeadersStream(&session_);
 939   QuicFlowControllerPeer::SetSendWindowOffset(headers_stream->flow_controller(),
 940                                               0);
 941   EXPECT_TRUE(headers_stream->flow_controller()->IsBlocked());
 942   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 943   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 944
 945   // Unblock the headers stream by supplying a WINDOW_UPDATE.
 946   QuicWindowUpdateFrame window_update_frame(headers_stream->id(),
 947                                             2 * kMinimumFlowControlSendWindow);
 948   vector<QuicWindowUpdateFrame> frames;
 949   frames.push_back(window_update_frame);
 950   session_.OnWindowUpdateFrames(frames);
 951   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 952   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 953   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 954 }
 955
 956 TEST_P(QuicSessionTest, TooManyUnfinishedStreamsCauseConnectionClose) {
 957   // If a buggy/malicious peer creates too many streams that are not ended with
 958   // a FIN or RST then we send a connection close.
 959   EXPECT_CALL(*connection_,
 960               SendConnectionClose(QUIC_TOO_MANY_UNFINISHED_STREAMS)).Times(1);
 961
 962   const int kMaxStreams = 5;
 963   QuicSessionPeer::SetMaxOpenStreams(&session_, kMaxStreams);
 964
 965   // Create kMaxStreams + 1 data streams, and close them all without receiving a
 966   // FIN or a RST from the client.
 967   const int kFirstStreamId = kClientDataStreamId1;
 968   const int kFinalStreamId = kClientDataStreamId1 + 2 * kMaxStreams + 1;
 969   for (int i = kFirstStreamId; i < kFinalStreamId; i += 2) {
 970     QuicStreamFrame data1(i, false, 0, MakeIOVector("HT"));
 971     vector<QuicStreamFrame> frames;
 972     frames.push_back(data1);
 973     session_.OnStreamFrames(frames);
 974     EXPECT_EQ(1u, session_.GetNumOpenStreams());
 975     EXPECT_CALL(*connection_, SendRstStream(i, _, _));
 976     session_.CloseStream(i);
 977   }
 978
 979   // Called after any new data is received by the session, and triggers the call
 980   // to close the connection.
 981   session_.PostProcessAfterData();
 982 }
 983
 984 }  // namespace
 985 }  // namespace test
 986 }  // namespace net