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_(new MockConnection(true, SupportedVersions(GetParam()))),
 188         session_(connection_) {
 189     session_.config()->SetInitialStreamFlowControlWindowToSend(
 190         kInitialStreamFlowControlWindowForTest);
 191     session_.config()->SetInitialSessionFlowControlWindowToSend(
 192         kInitialSessionFlowControlWindowForTest);
 193     headers_[":host"] = "www.google.com";
 194     headers_[":path"] = "/index.hml";
 195     headers_[":scheme"] = "http";
 196     headers_["cookie"] =
 197         "__utma=208381060.1228362404.1372200928.1372200928.1372200928.1; "
 198         "__utmc=160408618; "
 199         "GX=DQAAAOEAAACWJYdewdE9rIrW6qw3PtVi2-d729qaa-74KqOsM1NVQblK4VhX"
 200         "hoALMsy6HOdDad2Sz0flUByv7etmo3mLMidGrBoljqO9hSVA40SLqpG_iuKKSHX"
 201         "RW3Np4bq0F0SDGDNsW0DSmTS9ufMRrlpARJDS7qAI6M3bghqJp4eABKZiRqebHT"
 202         "pMU-RXvTI5D5oCF1vYxYofH_l1Kviuiy3oQ1kS1enqWgbhJ2t61_SNdv-1XJIS0"
 203         "O3YeHLmVCs62O6zp89QwakfAWK9d3IDQvVSJzCQsvxvNIvaZFa567MawWlXg0Rh"
 204         "1zFMi5vzcns38-8_Sns; "
 205         "GA=v*2%2Fmem*57968640*47239936%2Fmem*57968640*47114716%2Fno-nm-"
 206         "yj*15%2Fno-cc-yj*5%2Fpc-ch*133685%2Fpc-s-cr*133947%2Fpc-s-t*1339"
 207         "47%2Fno-nm-yj*4%2Fno-cc-yj*1%2Fceft-as*1%2Fceft-nqas*0%2Fad-ra-c"
 208         "v_p%2Fad-nr-cv_p-f*1%2Fad-v-cv_p*859%2Fad-ns-cv_p-f*1%2Ffn-v-ad%"
 209         "2Fpc-t*250%2Fpc-cm*461%2Fpc-s-cr*722%2Fpc-s-t*722%2Fau_p*4"
 210         "SICAID=AJKiYcHdKgxum7KMXG0ei2t1-W4OD1uW-ecNsCqC0wDuAXiDGIcT_HA2o1"
 211         "3Rs1UKCuBAF9g8rWNOFbxt8PSNSHFuIhOo2t6bJAVpCsMU5Laa6lewuTMYI8MzdQP"
 212         "ARHKyW-koxuhMZHUnGBJAM1gJODe0cATO_KGoX4pbbFxxJ5IicRxOrWK_5rU3cdy6"
 213         "edlR9FsEdH6iujMcHkbE5l18ehJDwTWmBKBzVD87naobhMMrF6VvnDGxQVGp9Ir_b"
 214         "Rgj3RWUoPumQVCxtSOBdX0GlJOEcDTNCzQIm9BSfetog_eP_TfYubKudt5eMsXmN6"
 215         "QnyXHeGeK2UINUzJ-D30AFcpqYgH9_1BvYSpi7fc7_ydBU8TaD8ZRxvtnzXqj0RfG"
 216         "tuHghmv3aD-uzSYJ75XDdzKdizZ86IG6Fbn1XFhYZM-fbHhm3mVEXnyRW4ZuNOLFk"
 217         "Fas6LMcVC6Q8QLlHYbXBpdNFuGbuZGUnav5C-2I_-46lL0NGg3GewxGKGHvHEfoyn"
 218         "EFFlEYHsBQ98rXImL8ySDycdLEFvBPdtctPmWCfTxwmoSMLHU2SCVDhbqMWU5b0yr"
 219         "JBCScs_ejbKaqBDoB7ZGxTvqlrB__2ZmnHHjCr8RgMRtKNtIeuZAo ";
 220     connection_->AdvanceTime(QuicTime::Delta::FromSeconds(1));
 221   }
 222
 223   void CheckClosedStreams() {
 224     for (int i = kCryptoStreamId; i < 100; i++) {
 225       if (!ContainsKey(closed_streams_, i)) {
 226         EXPECT_FALSE(session_.IsClosedStream(i)) << " stream id: " << i;
 227       } else {
 228         EXPECT_TRUE(session_.IsClosedStream(i)) << " stream id: " << i;
 229       }
 230     }
 231   }
 232
 233   void CloseStream(QuicStreamId id) {
 234     session_.CloseStream(id);
 235     closed_streams_.insert(id);
 236   }
 237
 238   QuicVersion version() const { return connection_->version(); }
 239
 240   MockConnection* connection_;
 241   TestSession session_;
 242   set<QuicStreamId> closed_streams_;
 243   SpdyHeaderBlock headers_;
 244 };
 245
 246 INSTANTIATE_TEST_CASE_P(Tests, QuicSessionTest,
 247                         ::testing::ValuesIn(QuicSupportedVersions()));
 248
 249 TEST_P(QuicSessionTest, PeerAddress) {
 250   EXPECT_EQ(IPEndPoint(Loopback4(), kTestPort), session_.peer_address());
 251 }
 252
 253 TEST_P(QuicSessionTest, IsCryptoHandshakeConfirmed) {
 254   EXPECT_FALSE(session_.IsCryptoHandshakeConfirmed());
 255   CryptoHandshakeMessage message;
 256   session_.GetCryptoStream()->OnHandshakeMessage(message);
 257   EXPECT_TRUE(session_.IsCryptoHandshakeConfirmed());
 258 }
 259
 260 TEST_P(QuicSessionTest, IsClosedStreamDefault) {
 261   // Ensure that no streams are initially closed.
 262   for (int i = kCryptoStreamId; i < 100; i++) {
 263     EXPECT_FALSE(session_.IsClosedStream(i)) << "stream id: " << i;
 264   }
 265 }
 266
 267 TEST_P(QuicSessionTest, ImplicitlyCreatedStreams) {
 268   ASSERT_TRUE(session_.GetIncomingDataStream(7) != nullptr);
 269   // Both 3 and 5 should be implicitly created.
 270   EXPECT_FALSE(session_.IsClosedStream(3));
 271   EXPECT_FALSE(session_.IsClosedStream(5));
 272   ASSERT_TRUE(session_.GetIncomingDataStream(5) != nullptr);
 273   ASSERT_TRUE(session_.GetIncomingDataStream(3) != nullptr);
 274 }
 275
 276 TEST_P(QuicSessionTest, IsClosedStreamLocallyCreated) {
 277   TestStream* stream2 = session_.CreateOutgoingDataStream();
 278   EXPECT_EQ(2u, stream2->id());
 279   TestStream* stream4 = session_.CreateOutgoingDataStream();
 280   EXPECT_EQ(4u, stream4->id());
 281
 282   CheckClosedStreams();
 283   CloseStream(4);
 284   CheckClosedStreams();
 285   CloseStream(2);
 286   CheckClosedStreams();
 287 }
 288
 289 TEST_P(QuicSessionTest, IsClosedStreamPeerCreated) {
 290   QuicStreamId stream_id1 = kClientDataStreamId1;
 291   QuicStreamId stream_id2 = kClientDataStreamId2;
 292   QuicDataStream* stream1 = session_.GetIncomingDataStream(stream_id1);
 293   QuicDataStreamPeer::SetHeadersDecompressed(stream1, true);
 294   QuicDataStream* stream2 = session_.GetIncomingDataStream(stream_id2);
 295   QuicDataStreamPeer::SetHeadersDecompressed(stream2, true);
 296
 297   CheckClosedStreams();
 298   CloseStream(stream_id1);
 299   CheckClosedStreams();
 300   CloseStream(stream_id2);
 301   // Create a stream explicitly, and another implicitly.
 302   QuicDataStream* stream3 = session_.GetIncomingDataStream(stream_id2 + 4);
 303   QuicDataStreamPeer::SetHeadersDecompressed(stream3, true);
 304   CheckClosedStreams();
 305   // Close one, but make sure the other is still not closed
 306   CloseStream(stream3->id());
 307   CheckClosedStreams();
 308 }
 309
 310 TEST_P(QuicSessionTest, StreamIdTooLarge) {
 311   QuicStreamId stream_id = kClientDataStreamId1;
 312   session_.GetIncomingDataStream(stream_id);
 313   EXPECT_CALL(*connection_, SendConnectionClose(QUIC_INVALID_STREAM_ID));
 314   session_.GetIncomingDataStream(stream_id + kMaxStreamIdDelta + 2);
 315 }
 316
 317 TEST_P(QuicSessionTest, DecompressionError) {
 318   QuicHeadersStream* stream = QuicSessionPeer::GetHeadersStream(&session_);
 319   if (version() > QUIC_VERSION_23) {
 320     // This test does not apply to HPACK compression.
 321     return;
 322   }
 323   const unsigned char data[] = {
 324     0x80, 0x03, 0x00, 0x01,  // SPDY/3 SYN_STREAM frame
 325     0x00, 0x00, 0x00, 0x25,  // flags/length
 326     0x00, 0x00, 0x00, 0x05,  // stream id
 327     0x00, 0x00, 0x00, 0x00,  // associated stream id
 328     0x00, 0x00,
 329     'a',  'b',  'c',  'd'    // invalid compressed data
 330   };
 331   EXPECT_CALL(*connection_, SendConnectionCloseWithDetails(
 332                                 QUIC_INVALID_HEADERS_STREAM_DATA,
 333                                 "SPDY framing error: DECOMPRESS_FAILURE"));
 334   stream->ProcessRawData(reinterpret_cast<const char*>(data),
 335                          arraysize(data));
 336 }
 337
 338 TEST_P(QuicSessionTest, DebugDFatalIfMarkingClosedStreamWriteBlocked) {
 339   TestStream* stream2 = session_.CreateOutgoingDataStream();
 340   // Close the stream.
 341   stream2->Reset(QUIC_BAD_APPLICATION_PAYLOAD);
 342   // TODO(rtenneti): enable when chromium supports EXPECT_DEBUG_DFATAL.
 343   /*
 344   QuicStreamId kClosedStreamId = stream2->id();
 345   EXPECT_DEBUG_DFATAL(
 346       session_.MarkWriteBlocked(kClosedStreamId, kSomeMiddlePriority),
 347       "Marking unknown stream 2 blocked.");
 348   */
 349 }
 350
 351 TEST_P(QuicSessionTest, DebugDFatalIfMarkWriteBlockedCalledWithWrongPriority) {
 352   const QuicPriority kDifferentPriority = 0;
 353
 354   TestStream* stream2 = session_.CreateOutgoingDataStream();
 355   EXPECT_NE(kDifferentPriority, stream2->EffectivePriority());
 356   // TODO(rtenneti): enable when chromium supports EXPECT_DEBUG_DFATAL.
 357   /*
 358   EXPECT_DEBUG_DFATAL(
 359       session_.MarkWriteBlocked(stream2->id(), kDifferentPriority),
 360       "Priorities do not match.  Got: 0 Expected: 3");
 361   */
 362 }
 363
 364 TEST_P(QuicSessionTest, OnCanWrite) {
 365   TestStream* stream2 = session_.CreateOutgoingDataStream();
 366   TestStream* stream4 = session_.CreateOutgoingDataStream();
 367   TestStream* stream6 = session_.CreateOutgoingDataStream();
 368
 369   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 370   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 371   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 372
 373   InSequence s;
 374   StreamBlocker stream2_blocker(&session_, stream2->id());
 375   // Reregister, to test the loop limit.
 376   EXPECT_CALL(*stream2, OnCanWrite())
 377       .WillOnce(Invoke(&stream2_blocker, &StreamBlocker::MarkWriteBlocked));
 378   EXPECT_CALL(*stream6, OnCanWrite());
 379   EXPECT_CALL(*stream4, OnCanWrite());
 380   session_.OnCanWrite();
 381   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 382 }
 383
 384 TEST_P(QuicSessionTest, OnCanWriteBundlesStreams) {
 385   // Drive congestion control manually.
 386   MockSendAlgorithm* send_algorithm = new StrictMock<MockSendAlgorithm>;
 387   QuicConnectionPeer::SetSendAlgorithm(session_.connection(), send_algorithm);
 388
 389   TestStream* stream2 = session_.CreateOutgoingDataStream();
 390   TestStream* stream4 = session_.CreateOutgoingDataStream();
 391   TestStream* stream6 = session_.CreateOutgoingDataStream();
 392
 393   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 394   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 395   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 396
 397   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillRepeatedly(
 398       Return(QuicTime::Delta::Zero()));
 399   EXPECT_CALL(*send_algorithm, GetCongestionWindow())
 400       .WillRepeatedly(Return(kMaxPacketSize * 10));
 401   EXPECT_CALL(*stream2, OnCanWrite())
 402       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 403           &session_, &TestSession::SendStreamData, stream2->id()))));
 404   EXPECT_CALL(*stream4, OnCanWrite())
 405       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 406           &session_, &TestSession::SendStreamData, stream4->id()))));
 407   EXPECT_CALL(*stream6, OnCanWrite())
 408       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 409           &session_, &TestSession::SendStreamData, stream6->id()))));
 410
 411   // Expect that we only send one packet, the writes from different streams
 412   // should be bundled together.
 413   MockPacketWriter* writer =
 414       static_cast<MockPacketWriter*>(
 415           QuicConnectionPeer::GetWriter(session_.connection()));
 416   EXPECT_CALL(*writer, WritePacket(_, _, _, _)).WillOnce(
 417                   Return(WriteResult(WRITE_STATUS_OK, 0)));
 418   EXPECT_CALL(*send_algorithm, OnPacketSent(_, _, _, _, _)).Times(1);
 419   session_.OnCanWrite();
 420   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 421 }
 422
 423 TEST_P(QuicSessionTest, OnCanWriteCongestionControlBlocks) {
 424   InSequence s;
 425
 426   // Drive congestion control manually.
 427   MockSendAlgorithm* send_algorithm = new StrictMock<MockSendAlgorithm>;
 428   QuicConnectionPeer::SetSendAlgorithm(session_.connection(), send_algorithm);
 429
 430   TestStream* stream2 = session_.CreateOutgoingDataStream();
 431   TestStream* stream4 = session_.CreateOutgoingDataStream();
 432   TestStream* stream6 = session_.CreateOutgoingDataStream();
 433
 434   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 435   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 436   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 437
 438   StreamBlocker stream2_blocker(&session_, stream2->id());
 439   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 440       QuicTime::Delta::Zero()));
 441   EXPECT_CALL(*stream2, OnCanWrite());
 442   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 443       QuicTime::Delta::Zero()));
 444   EXPECT_CALL(*stream6, OnCanWrite());
 445   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 446       QuicTime::Delta::Infinite()));
 447   // stream4->OnCanWrite is not called.
 448
 449   session_.OnCanWrite();
 450   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 451
 452   // Still congestion-control blocked.
 453   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 454       QuicTime::Delta::Infinite()));
 455   session_.OnCanWrite();
 456   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 457
 458   // stream4->OnCanWrite is called once the connection stops being
 459   // congestion-control blocked.
 460   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 461       QuicTime::Delta::Zero()));
 462   EXPECT_CALL(*stream4, OnCanWrite());
 463   session_.OnCanWrite();
 464   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 465 }
 466
 467 TEST_P(QuicSessionTest, BufferedHandshake) {
 468   EXPECT_FALSE(session_.HasPendingHandshake());  // Default value.
 469
 470   // Test that blocking other streams does not change our status.
 471   TestStream* stream2 = session_.CreateOutgoingDataStream();
 472   StreamBlocker stream2_blocker(&session_, stream2->id());
 473   stream2_blocker.MarkWriteBlocked();
 474   EXPECT_FALSE(session_.HasPendingHandshake());
 475
 476   TestStream* stream3 = session_.CreateOutgoingDataStream();
 477   StreamBlocker stream3_blocker(&session_, stream3->id());
 478   stream3_blocker.MarkWriteBlocked();
 479   EXPECT_FALSE(session_.HasPendingHandshake());
 480
 481   // Blocking (due to buffering of) the Crypto stream is detected.
 482   session_.MarkWriteBlocked(kCryptoStreamId, kHighestPriority);
 483   EXPECT_TRUE(session_.HasPendingHandshake());
 484
 485   TestStream* stream4 = session_.CreateOutgoingDataStream();
 486   StreamBlocker stream4_blocker(&session_, stream4->id());
 487   stream4_blocker.MarkWriteBlocked();
 488   EXPECT_TRUE(session_.HasPendingHandshake());
 489
 490   InSequence s;
 491   // Force most streams to re-register, which is common scenario when we block
 492   // the Crypto stream, and only the crypto stream can "really" write.
 493
 494   // Due to prioritization, we *should* be asked to write the crypto stream
 495   // first.
 496   // Don't re-register the crypto stream (which signals complete writing).
 497   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 498   EXPECT_CALL(*crypto_stream, OnCanWrite());
 499
 500   // Re-register all other streams, to show they weren't able to proceed.
 501   EXPECT_CALL(*stream2, OnCanWrite())
 502       .WillOnce(Invoke(&stream2_blocker, &StreamBlocker::MarkWriteBlocked));
 503   EXPECT_CALL(*stream3, OnCanWrite())
 504       .WillOnce(Invoke(&stream3_blocker, &StreamBlocker::MarkWriteBlocked));
 505   EXPECT_CALL(*stream4, OnCanWrite())
 506       .WillOnce(Invoke(&stream4_blocker, &StreamBlocker::MarkWriteBlocked));
 507
 508   session_.OnCanWrite();
 509   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 510   EXPECT_FALSE(session_.HasPendingHandshake());  // Crypto stream wrote.
 511 }
 512
 513 TEST_P(QuicSessionTest, OnCanWriteWithClosedStream) {
 514   TestStream* stream2 = session_.CreateOutgoingDataStream();
 515   TestStream* stream4 = session_.CreateOutgoingDataStream();
 516   TestStream* stream6 = session_.CreateOutgoingDataStream();
 517
 518   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 519   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 520   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 521   CloseStream(stream6->id());
 522
 523   InSequence s;
 524   EXPECT_CALL(*stream2, OnCanWrite());
 525   EXPECT_CALL(*stream4, OnCanWrite());
 526   session_.OnCanWrite();
 527   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 528 }
 529
 530 TEST_P(QuicSessionTest, OnCanWriteLimitsNumWritesIfFlowControlBlocked) {
 531   // Ensure connection level flow control blockage.
 532   QuicFlowControllerPeer::SetSendWindowOffset(session_.flow_controller(), 0);
 533   EXPECT_TRUE(session_.flow_controller()->IsBlocked());
 534   EXPECT_TRUE(session_.IsConnectionFlowControlBlocked());
 535   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 536
 537   // Mark the crypto and headers streams as write blocked, we expect them to be
 538   // allowed to write later.
 539   session_.MarkWriteBlocked(kCryptoStreamId, kHighestPriority);
 540   session_.MarkWriteBlocked(kHeadersStreamId, kHighestPriority);
 541
 542   // Create a data stream, and although it is write blocked we never expect it
 543   // to be allowed to write as we are connection level flow control blocked.
 544   TestStream* stream = session_.CreateOutgoingDataStream();
 545   session_.MarkWriteBlocked(stream->id(), kSomeMiddlePriority);
 546   EXPECT_CALL(*stream, OnCanWrite()).Times(0);
 547
 548   // The crypto and headers streams should be called even though we are
 549   // connection flow control blocked.
 550   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 551   EXPECT_CALL(*crypto_stream, OnCanWrite()).Times(1);
 552   TestHeadersStream* headers_stream = new TestHeadersStream(&session_);
 553   QuicSessionPeer::SetHeadersStream(&session_, headers_stream);
 554   EXPECT_CALL(*headers_stream, OnCanWrite()).Times(1);
 555
 556   session_.OnCanWrite();
 557   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 558 }
 559
 560 TEST_P(QuicSessionTest, SendGoAway) {
 561   EXPECT_CALL(*connection_,
 562               SendGoAway(QUIC_PEER_GOING_AWAY, 0u, "Going Away."));
 563   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 564   EXPECT_TRUE(session_.goaway_sent());
 565
 566   EXPECT_CALL(*connection_,
 567               SendRstStream(3u, QUIC_STREAM_PEER_GOING_AWAY, 0)).Times(0);
 568   EXPECT_TRUE(session_.GetIncomingDataStream(3u));
 569 }
 570
 571 TEST_P(QuicSessionTest, DoNotSendGoAwayTwice) {
 572   EXPECT_CALL(*connection_,
 573               SendGoAway(QUIC_PEER_GOING_AWAY, 0u, "Going Away.")).Times(1);
 574   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 575   EXPECT_TRUE(session_.goaway_sent());
 576   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 577 }
 578
 579 TEST_P(QuicSessionTest, IncreasedTimeoutAfterCryptoHandshake) {
 580   EXPECT_EQ(kInitialIdleTimeoutSecs + 3,
 581             QuicConnectionPeer::GetNetworkTimeout(connection_).ToSeconds());
 582   CryptoHandshakeMessage msg;
 583   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 584   EXPECT_EQ(kMaximumIdleTimeoutSecs + 3,
 585             QuicConnectionPeer::GetNetworkTimeout(connection_).ToSeconds());
 586 }
 587
 588 TEST_P(QuicSessionTest, RstStreamBeforeHeadersDecompressed) {
 589   // Send two bytes of payload.
 590   QuicStreamFrame data1(kClientDataStreamId1, false, 0, MakeIOVector("HT"));
 591   vector<QuicStreamFrame> frames;
 592   frames.push_back(data1);
 593   session_.OnStreamFrames(frames);
 594   EXPECT_EQ(1u, session_.GetNumOpenStreams());
 595
 596   QuicRstStreamFrame rst1(kClientDataStreamId1, QUIC_STREAM_NO_ERROR, 0);
 597   session_.OnRstStream(rst1);
 598   EXPECT_EQ(0u, session_.GetNumOpenStreams());
 599   // Connection should remain alive.
 600   EXPECT_TRUE(connection_->connected());
 601 }
 602
 603 TEST_P(QuicSessionTest, MultipleRstStreamsCauseSingleConnectionClose) {
 604   // If multiple invalid reset stream frames arrive in a single packet, this
 605   // should trigger a connection close. However there is no need to send
 606   // multiple connection close frames.
 607
 608   // Create valid stream.
 609   QuicStreamFrame data1(kClientDataStreamId1, false, 0, MakeIOVector("HT"));
 610   vector<QuicStreamFrame> frames;
 611   frames.push_back(data1);
 612   session_.OnStreamFrames(frames);
 613   EXPECT_EQ(1u, session_.GetNumOpenStreams());
 614
 615   // Process first invalid stream reset, resulting in the connection being
 616   // closed.
 617   EXPECT_CALL(*connection_, SendConnectionClose(QUIC_INVALID_STREAM_ID))
 618       .Times(1);
 619   QuicStreamId kLargeInvalidStreamId = 99999999;
 620   QuicRstStreamFrame rst1(kLargeInvalidStreamId, QUIC_STREAM_NO_ERROR, 0);
 621   session_.OnRstStream(rst1);
 622   QuicConnectionPeer::CloseConnection(connection_);
 623
 624   // Processing of second invalid stream reset should not result in the
 625   // connection being closed for a second time.
 626   QuicRstStreamFrame rst2(kLargeInvalidStreamId, QUIC_STREAM_NO_ERROR, 0);
 627   session_.OnRstStream(rst2);
 628 }
 629
 630 TEST_P(QuicSessionTest, HandshakeUnblocksFlowControlBlockedStream) {
 631   // Test that if a stream is flow control blocked, then on receipt of the SHLO
 632   // containing a suitable send window offset, the stream becomes unblocked.
 633
 634   // Ensure that Writev consumes all the data it is given (simulate no socket
 635   // blocking).
 636   session_.set_writev_consumes_all_data(true);
 637
 638   // Create a stream, and send enough data to make it flow control blocked.
 639   TestStream* stream2 = session_.CreateOutgoingDataStream();
 640   string body(kMinimumFlowControlSendWindow, '.');
 641   EXPECT_FALSE(stream2->flow_controller()->IsBlocked());
 642   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 643   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 644   stream2->SendBody(body, false);
 645   EXPECT_TRUE(stream2->flow_controller()->IsBlocked());
 646   EXPECT_TRUE(session_.IsConnectionFlowControlBlocked());
 647   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 648
 649   // The handshake message will call OnCanWrite, so the stream can resume
 650   // writing.
 651   EXPECT_CALL(*stream2, OnCanWrite());
 652   // Now complete the crypto handshake, resulting in an increased flow control
 653   // send window.
 654   CryptoHandshakeMessage msg;
 655   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 656
 657   // Stream is now unblocked.
 658   EXPECT_FALSE(stream2->flow_controller()->IsBlocked());
 659   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 660   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 661 }
 662
 663 TEST_P(QuicSessionTest, HandshakeUnblocksFlowControlBlockedCryptoStream) {
 664   // Test that if the crypto stream is flow control blocked, then if the SHLO
 665   // contains a larger send window offset, the stream becomes unblocked.
 666   session_.set_writev_consumes_all_data(true);
 667   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 668   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 669   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 670   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 671   QuicHeadersStream* headers_stream =
 672       QuicSessionPeer::GetHeadersStream(&session_);
 673   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 674   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 675   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 676   // Write until the crypto stream is flow control blocked.
 677   int i = 0;
 678   while (!crypto_stream->flow_controller()->IsBlocked() && i < 1000) {
 679     EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 680     EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 681     QuicConfig config;
 682     CryptoHandshakeMessage crypto_message;
 683     config.ToHandshakeMessage(&crypto_message);
 684     crypto_stream->SendHandshakeMessage(crypto_message);
 685     ++i;
 686   }
 687   EXPECT_TRUE(crypto_stream->flow_controller()->IsBlocked());
 688   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 689   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 690   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 691   EXPECT_FALSE(session_.HasDataToWrite());
 692   EXPECT_TRUE(crypto_stream->HasBufferedData());
 693
 694   // The handshake message will call OnCanWrite, so the stream can
 695   // resume writing.
 696   EXPECT_CALL(*crypto_stream, OnCanWrite());
 697   // Now complete the crypto handshake, resulting in an increased flow control
 698   // send window.
 699   CryptoHandshakeMessage msg;
 700   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 701
 702   // Stream is now unblocked and will no longer have buffered data.
 703   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 704   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 705   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 706 }
 707
 708 TEST_P(QuicSessionTest, HandshakeUnblocksFlowControlBlockedHeadersStream) {
 709   // Test that if the header stream is flow control blocked, then if the SHLO
 710   // contains a larger send window offset, the stream becomes unblocked.
 711   session_.set_writev_consumes_all_data(true);
 712   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 713   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 714   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 715   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 716   QuicHeadersStream* headers_stream =
 717       QuicSessionPeer::GetHeadersStream(&session_);
 718   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 719   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 720   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 721   QuicStreamId stream_id = 5;
 722   // Write until the header stream is flow control blocked.
 723   SpdyHeaderBlock headers;
 724   while (!headers_stream->flow_controller()->IsBlocked() && stream_id < 2000) {
 725     EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 726     EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 727     headers["header"] = base::Uint64ToString(base::RandUint64()) +
 728         base::Uint64ToString(base::RandUint64()) +
 729         base::Uint64ToString(base::RandUint64());
 730     headers_stream->WriteHeaders(stream_id, headers, true, 0, nullptr);
 731     stream_id += 2;
 732   }
 733   // Write once more to ensure that the headers stream has buffered data. The
 734   // random headers may have exactly filled the flow control window.
 735   headers_stream->WriteHeaders(stream_id, headers, true, 0, nullptr);
 736   EXPECT_TRUE(headers_stream->HasBufferedData());
 737
 738   EXPECT_TRUE(headers_stream->flow_controller()->IsBlocked());
 739   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 740   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 741   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 742   EXPECT_FALSE(session_.HasDataToWrite());
 743
 744   // Now complete the crypto handshake, resulting in an increased flow control
 745   // send window.
 746   CryptoHandshakeMessage msg;
 747   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 748
 749   // Stream is now unblocked and will no longer have buffered data.
 750   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 751   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 752   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 753   EXPECT_FALSE(headers_stream->HasBufferedData());
 754 }
 755
 756 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingRstOutOfOrder) {
 757   // Test that when we receive an out of order stream RST we correctly adjust
 758   // our connection level flow control receive window.
 759   // On close, the stream should mark as consumed all bytes between the highest
 760   // byte consumed so far and the final byte offset from the RST frame.
 761   TestStream* stream = session_.CreateOutgoingDataStream();
 762
 763   const QuicStreamOffset kByteOffset =
 764       1 + kInitialSessionFlowControlWindowForTest / 2;
 765
 766   // Expect no stream WINDOW_UPDATE frames, as stream read side closed.
 767   EXPECT_CALL(*connection_, SendWindowUpdate(stream->id(), _)).Times(0);
 768   // We do expect a connection level WINDOW_UPDATE when the stream is reset.
 769   EXPECT_CALL(*connection_,
 770               SendWindowUpdate(0, kInitialSessionFlowControlWindowForTest +
 771                                       kByteOffset)).Times(1);
 772
 773   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 774                                kByteOffset);
 775   session_.OnRstStream(rst_frame);
 776   session_.PostProcessAfterData();
 777   EXPECT_EQ(kByteOffset, session_.flow_controller()->bytes_consumed());
 778 }
 779
 780 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingFinAndLocalReset) {
 781   // Test the situation where we receive a FIN on a stream, and before we fully
 782   // consume all the data from the sequencer buffer we locally RST the stream.
 783   // The bytes between highest consumed byte, and the final byte offset that we
 784   // determined when the FIN arrived, should be marked as consumed at the
 785   // connection level flow controller when the stream is reset.
 786   TestStream* stream = session_.CreateOutgoingDataStream();
 787
 788   const QuicStreamOffset kByteOffset =
 789       1 + kInitialSessionFlowControlWindowForTest / 2;
 790   QuicStreamFrame frame(stream->id(), true, kByteOffset, IOVector());
 791   vector<QuicStreamFrame> frames;
 792   frames.push_back(frame);
 793   session_.OnStreamFrames(frames);
 794   session_.PostProcessAfterData();
 795
 796   EXPECT_EQ(0u, stream->flow_controller()->bytes_consumed());
 797   EXPECT_EQ(kByteOffset,
 798             stream->flow_controller()->highest_received_byte_offset());
 799
 800   // Reset stream locally.
 801   stream->Reset(QUIC_STREAM_CANCELLED);
 802   EXPECT_EQ(kByteOffset, session_.flow_controller()->bytes_consumed());
 803 }
 804
 805 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingFinAfterRst) {
 806   // Test that when we RST the stream (and tear down stream state), and then
 807   // receive a FIN from the peer, we correctly adjust our connection level flow
 808   // control receive window.
 809
 810   // Connection starts with some non-zero highest received byte offset,
 811   // due to other active streams.
 812   const uint64 kInitialConnectionBytesConsumed = 567;
 813   const uint64 kInitialConnectionHighestReceivedOffset = 1234;
 814   EXPECT_LT(kInitialConnectionBytesConsumed,
 815             kInitialConnectionHighestReceivedOffset);
 816   session_.flow_controller()->UpdateHighestReceivedOffset(
 817       kInitialConnectionHighestReceivedOffset);
 818   session_.flow_controller()->AddBytesConsumed(kInitialConnectionBytesConsumed);
 819
 820   // Reset our stream: this results in the stream being closed locally.
 821   TestStream* stream = session_.CreateOutgoingDataStream();
 822   stream->Reset(QUIC_STREAM_CANCELLED);
 823
 824   // Now receive a response from the peer with a FIN. We should handle this by
 825   // adjusting the connection level flow control receive window to take into
 826   // account the total number of bytes sent by the peer.
 827   const QuicStreamOffset kByteOffset = 5678;
 828   string body = "hello";
 829   IOVector data = MakeIOVector(body);
 830   QuicStreamFrame frame(stream->id(), true, kByteOffset, data);
 831   vector<QuicStreamFrame> frames;
 832   frames.push_back(frame);
 833   session_.OnStreamFrames(frames);
 834
 835   QuicStreamOffset total_stream_bytes_sent_by_peer =
 836       kByteOffset + body.length();
 837   EXPECT_EQ(kInitialConnectionBytesConsumed + total_stream_bytes_sent_by_peer,
 838             session_.flow_controller()->bytes_consumed());
 839   EXPECT_EQ(
 840       kInitialConnectionHighestReceivedOffset + total_stream_bytes_sent_by_peer,
 841       session_.flow_controller()->highest_received_byte_offset());
 842 }
 843
 844 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingRstAfterRst) {
 845   // Test that when we RST the stream (and tear down stream state), and then
 846   // receive a RST from the peer, we correctly adjust our connection level flow
 847   // control receive window.
 848
 849   // Connection starts with some non-zero highest received byte offset,
 850   // due to other active streams.
 851   const uint64 kInitialConnectionBytesConsumed = 567;
 852   const uint64 kInitialConnectionHighestReceivedOffset = 1234;
 853   EXPECT_LT(kInitialConnectionBytesConsumed,
 854             kInitialConnectionHighestReceivedOffset);
 855   session_.flow_controller()->UpdateHighestReceivedOffset(
 856       kInitialConnectionHighestReceivedOffset);
 857   session_.flow_controller()->AddBytesConsumed(kInitialConnectionBytesConsumed);
 858
 859   // Reset our stream: this results in the stream being closed locally.
 860   TestStream* stream = session_.CreateOutgoingDataStream();
 861   stream->Reset(QUIC_STREAM_CANCELLED);
 862
 863   // Now receive a RST from the peer. We should handle this by adjusting the
 864   // connection level flow control receive window to take into account the total
 865   // number of bytes sent by the peer.
 866   const QuicStreamOffset kByteOffset = 5678;
 867   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 868                                kByteOffset);
 869   session_.OnRstStream(rst_frame);
 870
 871   EXPECT_EQ(kInitialConnectionBytesConsumed + kByteOffset,
 872             session_.flow_controller()->bytes_consumed());
 873   EXPECT_EQ(kInitialConnectionHighestReceivedOffset + kByteOffset,
 874             session_.flow_controller()->highest_received_byte_offset());
 875 }
 876
 877 TEST_P(QuicSessionTest, InvalidStreamFlowControlWindowInHandshake) {
 878   // Test that receipt of an invalid (< default) stream flow control window from
 879   // the peer results in the connection being torn down.
 880   uint32 kInvalidWindow = kMinimumFlowControlSendWindow - 1;
 881   QuicConfigPeer::SetReceivedInitialStreamFlowControlWindow(session_.config(),
 882                                                             kInvalidWindow);
 883
 884   EXPECT_CALL(*connection_,
 885               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW));
 886   session_.OnConfigNegotiated();
 887 }
 888
 889 TEST_P(QuicSessionTest, InvalidSessionFlowControlWindowInHandshake) {
 890   // Test that receipt of an invalid (< default) session flow control window
 891   // from the peer results in the connection being torn down.
 892   uint32 kInvalidWindow = kMinimumFlowControlSendWindow - 1;
 893   QuicConfigPeer::SetReceivedInitialSessionFlowControlWindow(session_.config(),
 894                                                              kInvalidWindow);
 895
 896   EXPECT_CALL(*connection_,
 897               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW));
 898   session_.OnConfigNegotiated();
 899 }
 900
 901 TEST_P(QuicSessionTest, FlowControlWithInvalidFinalOffset) {
 902   // Test that if we receive a stream RST with a highest byte offset that
 903   // violates flow control, that we close the connection.
 904   const uint64 kLargeOffset = kInitialSessionFlowControlWindowForTest + 1;
 905   EXPECT_CALL(*connection_,
 906               SendConnectionClose(QUIC_FLOW_CONTROL_RECEIVED_TOO_MUCH_DATA))
 907       .Times(2);
 908
 909   // Check that stream frame + FIN results in connection close.
 910   TestStream* stream = session_.CreateOutgoingDataStream();
 911   stream->Reset(QUIC_STREAM_CANCELLED);
 912   QuicStreamFrame frame(stream->id(), true, kLargeOffset, IOVector());
 913   vector<QuicStreamFrame> frames;
 914   frames.push_back(frame);
 915   session_.OnStreamFrames(frames);
 916
 917   // Check that RST results in connection close.
 918   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 919                                kLargeOffset);
 920   session_.OnRstStream(rst_frame);
 921 }
 922
 923 TEST_P(QuicSessionTest, WindowUpdateUnblocksHeadersStream) {
 924   // Test that a flow control blocked headers stream gets unblocked on recipt of
 925   // a WINDOW_UPDATE frame. Regression test for b/17413860.
 926
 927   // Set the headers stream to be flow control blocked.
 928   QuicHeadersStream* headers_stream =
 929       QuicSessionPeer::GetHeadersStream(&session_);
 930   QuicFlowControllerPeer::SetSendWindowOffset(headers_stream->flow_controller(),
 931                                               0);
 932   EXPECT_TRUE(headers_stream->flow_controller()->IsBlocked());
 933   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 934   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 935
 936   // Unblock the headers stream by supplying a WINDOW_UPDATE.
 937   QuicWindowUpdateFrame window_update_frame(headers_stream->id(),
 938                                             2 * kMinimumFlowControlSendWindow);
 939   vector<QuicWindowUpdateFrame> frames;
 940   frames.push_back(window_update_frame);
 941   session_.OnWindowUpdateFrames(frames);
 942   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 943   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 944   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 945 }
 946
 947 TEST_P(QuicSessionTest, TooManyUnfinishedStreamsCauseConnectionClose) {
 948   // If a buggy/malicious peer creates too many streams that are not ended with
 949   // a FIN or RST then we send a connection close.
 950   EXPECT_CALL(*connection_,
 951               SendConnectionClose(QUIC_TOO_MANY_UNFINISHED_STREAMS)).Times(1);
 952
 953   const int kMaxStreams = 5;
 954   QuicSessionPeer::SetMaxOpenStreams(&session_, kMaxStreams);
 955
 956   // Create kMaxStreams + 1 data streams, and close them all without receiving a
 957   // FIN or a RST from the client.
 958   const int kFirstStreamId = kClientDataStreamId1;
 959   const int kFinalStreamId = kClientDataStreamId1 + 2 * kMaxStreams + 1;
 960   for (int i = kFirstStreamId; i < kFinalStreamId; i += 2) {
 961     QuicStreamFrame data1(i, false, 0, MakeIOVector("HT"));
 962     vector<QuicStreamFrame> frames;
 963     frames.push_back(data1);
 964     session_.OnStreamFrames(frames);
 965     EXPECT_EQ(1u, session_.GetNumOpenStreams());
 966     session_.CloseStream(i);
 967   }
 968
 969   // Called after any new data is received by the session, and triggers the call
 970   // to close the connection.
 971   session_.PostProcessAfterData();
 972 }
 973
 974 }  // namespace
 975 }  // namespace test
 976 }  // namespace net