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 #include <vector>
   9
  10 #include "base/basictypes.h"
  11 #include "base/containers/hash_tables.h"
  12 #include "base/rand_util.h"
  13 #include "base/stl_util.h"
  14 #include "base/strings/string_number_conversions.h"
  15 #include "net/quic/crypto/crypto_protocol.h"
  16 #include "net/quic/quic_crypto_stream.h"
  17 #include "net/quic/quic_flags.h"
  18 #include "net/quic/quic_protocol.h"
  19 #include "net/quic/quic_utils.h"
  20 #include "net/quic/reliable_quic_stream.h"
  21 #include "net/quic/test_tools/quic_config_peer.h"
  22 #include "net/quic/test_tools/quic_connection_peer.h"
  23 #include "net/quic/test_tools/quic_data_stream_peer.h"
  24 #include "net/quic/test_tools/quic_flow_controller_peer.h"
  25 #include "net/quic/test_tools/quic_session_peer.h"
  26 #include "net/quic/test_tools/quic_test_utils.h"
  27 #include "net/quic/test_tools/reliable_quic_stream_peer.h"
  28 #include "net/spdy/spdy_framer.h"
  29 #include "net/test/gtest_util.h"
  30 #include "testing/gmock/include/gmock/gmock.h"
  31 #include "testing/gmock_mutant.h"
  32 #include "testing/gtest/include/gtest/gtest.h"
  33
  34 using base::hash_map;
  35 using std::set;
  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   virtual void OnHandshakeMessage(
  58       const CryptoHandshakeMessage& message) override {
  59     encryption_established_ = true;
  60     handshake_confirmed_ = true;
  61     CryptoHandshakeMessage msg;
  62     string error_details;
  63     session()->config()->SetInitialFlowControlWindowToSend(
  64         kInitialSessionFlowControlWindowForTest);
  65     session()->config()->SetInitialStreamFlowControlWindowToSend(
  66         kInitialStreamFlowControlWindowForTest);
  67     session()->config()->SetInitialSessionFlowControlWindowToSend(
  68         kInitialSessionFlowControlWindowForTest);
  69     session()->config()->ToHandshakeMessage(&msg);
  70     const QuicErrorCode error = session()->config()->ProcessPeerHello(
  71         msg, CLIENT, &error_details);
  72     EXPECT_EQ(QUIC_NO_ERROR, error);
  73     session()->OnConfigNegotiated();
  74     session()->OnCryptoHandshakeEvent(QuicSession::HANDSHAKE_CONFIRMED);
  75   }
  76
  77   MOCK_METHOD0(OnCanWrite, void());
  78 };
  79
  80 class TestHeadersStream : public QuicHeadersStream {
  81  public:
  82   explicit TestHeadersStream(QuicSession* session)
  83       : QuicHeadersStream(session) {
  84   }
  85
  86   MOCK_METHOD0(OnCanWrite, void());
  87 };
  88
  89 class TestStream : public QuicDataStream {
  90  public:
  91   TestStream(QuicStreamId id, QuicSession* session)
  92       : QuicDataStream(id, session) {
  93   }
  94
  95   using ReliableQuicStream::CloseWriteSide;
  96
  97   virtual uint32 ProcessData(const char* data, uint32 data_len) override {
  98     return data_len;
  99   }
 100
 101   void SendBody(const string& data, bool fin) {
 102     WriteOrBufferData(data, fin, nullptr);
 103   }
 104
 105   MOCK_METHOD0(OnCanWrite, void());
 106 };
 107
 108 // Poor man's functor for use as callback in a mock.
 109 class StreamBlocker {
 110  public:
 111   StreamBlocker(QuicSession* session, QuicStreamId stream_id)
 112       : session_(session),
 113         stream_id_(stream_id) {
 114   }
 115
 116   void MarkWriteBlocked() {
 117     session_->MarkWriteBlocked(stream_id_, kSomeMiddlePriority);
 118   }
 119
 120  private:
 121   QuicSession* const session_;
 122   const QuicStreamId stream_id_;
 123 };
 124
 125 class TestSession : public QuicSession {
 126  public:
 127   explicit TestSession(QuicConnection* connection)
 128       : QuicSession(connection,
 129                     DefaultQuicConfig()),
 130         crypto_stream_(this),
 131         writev_consumes_all_data_(false) {
 132     InitializeSession();
 133   }
 134
 135   virtual TestCryptoStream* GetCryptoStream() override {
 136     return &crypto_stream_;
 137   }
 138
 139   virtual TestStream* CreateOutgoingDataStream() override {
 140     TestStream* stream = new TestStream(GetNextStreamId(), this);
 141     ActivateStream(stream);
 142     return stream;
 143   }
 144
 145   virtual TestStream* CreateIncomingDataStream(QuicStreamId id) override {
 146     return new TestStream(id, this);
 147   }
 148
 149   bool IsClosedStream(QuicStreamId id) {
 150     return QuicSession::IsClosedStream(id);
 151   }
 152
 153   QuicDataStream* GetIncomingDataStream(QuicStreamId stream_id) {
 154     return QuicSession::GetIncomingDataStream(stream_id);
 155   }
 156
 157   virtual QuicConsumedData WritevData(
 158       QuicStreamId id,
 159       const IOVector& data,
 160       QuicStreamOffset offset,
 161       bool fin,
 162       FecProtection fec_protection,
 163       QuicAckNotifier::DelegateInterface* ack_notifier_delegate) override {
 164     // Always consumes everything.
 165     if (writev_consumes_all_data_) {
 166       return QuicConsumedData(data.TotalBufferSize(), fin);
 167     } else {
 168       return QuicSession::WritevData(id, data, offset, fin, fec_protection,
 169                                      ack_notifier_delegate);
 170     }
 171   }
 172
 173   void set_writev_consumes_all_data(bool val) {
 174     writev_consumes_all_data_ = val;
 175   }
 176
 177   QuicConsumedData SendStreamData(QuicStreamId id) {
 178     return WritevData(id, IOVector(), 0, true, MAY_FEC_PROTECT, nullptr);
 179   }
 180
 181   using QuicSession::PostProcessAfterData;
 182
 183  private:
 184   StrictMock<TestCryptoStream> crypto_stream_;
 185
 186   bool writev_consumes_all_data_;
 187 };
 188
 189 class QuicSessionTest : public ::testing::TestWithParam<QuicVersion> {
 190  protected:
 191   QuicSessionTest()
 192       : connection_(new MockConnection(true, SupportedVersions(GetParam()))),
 193         session_(connection_) {
 194     session_.config()->SetInitialFlowControlWindowToSend(
 195         kInitialSessionFlowControlWindowForTest);
 196     session_.config()->SetInitialStreamFlowControlWindowToSend(
 197         kInitialStreamFlowControlWindowForTest);
 198     session_.config()->SetInitialSessionFlowControlWindowToSend(
 199         kInitialSessionFlowControlWindowForTest);
 200     headers_[":host"] = "www.google.com";
 201     headers_[":path"] = "/index.hml";
 202     headers_[":scheme"] = "http";
 203     headers_["cookie"] =
 204         "__utma=208381060.1228362404.1372200928.1372200928.1372200928.1; "
 205         "__utmc=160408618; "
 206         "GX=DQAAAOEAAACWJYdewdE9rIrW6qw3PtVi2-d729qaa-74KqOsM1NVQblK4VhX"
 207         "hoALMsy6HOdDad2Sz0flUByv7etmo3mLMidGrBoljqO9hSVA40SLqpG_iuKKSHX"
 208         "RW3Np4bq0F0SDGDNsW0DSmTS9ufMRrlpARJDS7qAI6M3bghqJp4eABKZiRqebHT"
 209         "pMU-RXvTI5D5oCF1vYxYofH_l1Kviuiy3oQ1kS1enqWgbhJ2t61_SNdv-1XJIS0"
 210         "O3YeHLmVCs62O6zp89QwakfAWK9d3IDQvVSJzCQsvxvNIvaZFa567MawWlXg0Rh"
 211         "1zFMi5vzcns38-8_Sns; "
 212         "GA=v*2%2Fmem*57968640*47239936%2Fmem*57968640*47114716%2Fno-nm-"
 213         "yj*15%2Fno-cc-yj*5%2Fpc-ch*133685%2Fpc-s-cr*133947%2Fpc-s-t*1339"
 214         "47%2Fno-nm-yj*4%2Fno-cc-yj*1%2Fceft-as*1%2Fceft-nqas*0%2Fad-ra-c"
 215         "v_p%2Fad-nr-cv_p-f*1%2Fad-v-cv_p*859%2Fad-ns-cv_p-f*1%2Ffn-v-ad%"
 216         "2Fpc-t*250%2Fpc-cm*461%2Fpc-s-cr*722%2Fpc-s-t*722%2Fau_p*4"
 217         "SICAID=AJKiYcHdKgxum7KMXG0ei2t1-W4OD1uW-ecNsCqC0wDuAXiDGIcT_HA2o1"
 218         "3Rs1UKCuBAF9g8rWNOFbxt8PSNSHFuIhOo2t6bJAVpCsMU5Laa6lewuTMYI8MzdQP"
 219         "ARHKyW-koxuhMZHUnGBJAM1gJODe0cATO_KGoX4pbbFxxJ5IicRxOrWK_5rU3cdy6"
 220         "edlR9FsEdH6iujMcHkbE5l18ehJDwTWmBKBzVD87naobhMMrF6VvnDGxQVGp9Ir_b"
 221         "Rgj3RWUoPumQVCxtSOBdX0GlJOEcDTNCzQIm9BSfetog_eP_TfYubKudt5eMsXmN6"
 222         "QnyXHeGeK2UINUzJ-D30AFcpqYgH9_1BvYSpi7fc7_ydBU8TaD8ZRxvtnzXqj0RfG"
 223         "tuHghmv3aD-uzSYJ75XDdzKdizZ86IG6Fbn1XFhYZM-fbHhm3mVEXnyRW4ZuNOLFk"
 224         "Fas6LMcVC6Q8QLlHYbXBpdNFuGbuZGUnav5C-2I_-46lL0NGg3GewxGKGHvHEfoyn"
 225         "EFFlEYHsBQ98rXImL8ySDycdLEFvBPdtctPmWCfTxwmoSMLHU2SCVDhbqMWU5b0yr"
 226         "JBCScs_ejbKaqBDoB7ZGxTvqlrB__2ZmnHHjCr8RgMRtKNtIeuZAo ";
 227   }
 228
 229   void CheckClosedStreams() {
 230     for (int i = kCryptoStreamId; i < 100; i++) {
 231       if (!ContainsKey(closed_streams_, i)) {
 232         EXPECT_FALSE(session_.IsClosedStream(i)) << " stream id: " << i;
 233       } else {
 234         EXPECT_TRUE(session_.IsClosedStream(i)) << " stream id: " << i;
 235       }
 236     }
 237   }
 238
 239   void CloseStream(QuicStreamId id) {
 240     session_.CloseStream(id);
 241     closed_streams_.insert(id);
 242   }
 243
 244   QuicVersion version() const { return connection_->version(); }
 245
 246   MockConnection* connection_;
 247   TestSession session_;
 248   set<QuicStreamId> closed_streams_;
 249   SpdyHeaderBlock headers_;
 250 };
 251
 252 INSTANTIATE_TEST_CASE_P(Tests, QuicSessionTest,
 253                         ::testing::ValuesIn(QuicSupportedVersions()));
 254
 255 TEST_P(QuicSessionTest, PeerAddress) {
 256   EXPECT_EQ(IPEndPoint(Loopback4(), kTestPort), session_.peer_address());
 257 }
 258
 259 TEST_P(QuicSessionTest, IsCryptoHandshakeConfirmed) {
 260   EXPECT_FALSE(session_.IsCryptoHandshakeConfirmed());
 261   CryptoHandshakeMessage message;
 262   session_.GetCryptoStream()->OnHandshakeMessage(message);
 263   EXPECT_TRUE(session_.IsCryptoHandshakeConfirmed());
 264 }
 265
 266 TEST_P(QuicSessionTest, IsClosedStreamDefault) {
 267   // Ensure that no streams are initially closed.
 268   for (int i = kCryptoStreamId; i < 100; i++) {
 269     EXPECT_FALSE(session_.IsClosedStream(i)) << "stream id: " << i;
 270   }
 271 }
 272
 273 TEST_P(QuicSessionTest, ImplicitlyCreatedStreams) {
 274   ASSERT_TRUE(session_.GetIncomingDataStream(7) != nullptr);
 275   // Both 3 and 5 should be implicitly created.
 276   EXPECT_FALSE(session_.IsClosedStream(3));
 277   EXPECT_FALSE(session_.IsClosedStream(5));
 278   ASSERT_TRUE(session_.GetIncomingDataStream(5) != nullptr);
 279   ASSERT_TRUE(session_.GetIncomingDataStream(3) != nullptr);
 280 }
 281
 282 TEST_P(QuicSessionTest, IsClosedStreamLocallyCreated) {
 283   TestStream* stream2 = session_.CreateOutgoingDataStream();
 284   EXPECT_EQ(2u, stream2->id());
 285   TestStream* stream4 = session_.CreateOutgoingDataStream();
 286   EXPECT_EQ(4u, stream4->id());
 287
 288   CheckClosedStreams();
 289   CloseStream(4);
 290   CheckClosedStreams();
 291   CloseStream(2);
 292   CheckClosedStreams();
 293 }
 294
 295 TEST_P(QuicSessionTest, IsClosedStreamPeerCreated) {
 296   QuicStreamId stream_id1 = kClientDataStreamId1;
 297   QuicStreamId stream_id2 = kClientDataStreamId2;
 298   QuicDataStream* stream1 = session_.GetIncomingDataStream(stream_id1);
 299   QuicDataStreamPeer::SetHeadersDecompressed(stream1, true);
 300   QuicDataStream* stream2 = session_.GetIncomingDataStream(stream_id2);
 301   QuicDataStreamPeer::SetHeadersDecompressed(stream2, true);
 302
 303   CheckClosedStreams();
 304   CloseStream(stream_id1);
 305   CheckClosedStreams();
 306   CloseStream(stream_id2);
 307   // Create a stream explicitly, and another implicitly.
 308   QuicDataStream* stream3 = session_.GetIncomingDataStream(stream_id2 + 4);
 309   QuicDataStreamPeer::SetHeadersDecompressed(stream3, true);
 310   CheckClosedStreams();
 311   // Close one, but make sure the other is still not closed
 312   CloseStream(stream3->id());
 313   CheckClosedStreams();
 314 }
 315
 316 TEST_P(QuicSessionTest, StreamIdTooLarge) {
 317   QuicStreamId stream_id = kClientDataStreamId1;
 318   session_.GetIncomingDataStream(stream_id);
 319   EXPECT_CALL(*connection_, SendConnectionClose(QUIC_INVALID_STREAM_ID));
 320   session_.GetIncomingDataStream(stream_id + kMaxStreamIdDelta + 2);
 321 }
 322
 323 TEST_P(QuicSessionTest, DecompressionError) {
 324   QuicHeadersStream* stream = QuicSessionPeer::GetHeadersStream(&session_);
 325   const unsigned char data[] = {
 326     0x80, 0x03, 0x00, 0x01,  // SPDY/3 SYN_STREAM frame
 327     0x00, 0x00, 0x00, 0x25,  // flags/length
 328     0x00, 0x00, 0x00, 0x05,  // stream id
 329     0x00, 0x00, 0x00, 0x00,  // associated stream id
 330     0x00, 0x00,
 331     'a',  'b',  'c',  'd'    // invalid compressed data
 332   };
 333   EXPECT_CALL(*connection_,
 334               SendConnectionCloseWithDetails(QUIC_INVALID_HEADERS_STREAM_DATA,
 335                                              "SPDY framing error."));
 336   stream->ProcessRawData(reinterpret_cast<const char*>(data),
 337                          arraysize(data));
 338 }
 339
 340 TEST_P(QuicSessionTest, DebugDFatalIfMarkingClosedStreamWriteBlocked) {
 341   TestStream* stream2 = session_.CreateOutgoingDataStream();
 342   // Close the stream.
 343   stream2->Reset(QUIC_BAD_APPLICATION_PAYLOAD);
 344   // TODO(rtenneti): enable when chromium supports EXPECT_DEBUG_DFATAL.
 345   /*
 346   QuicStreamId kClosedStreamId = stream2->id();
 347   EXPECT_DEBUG_DFATAL(
 348       session_.MarkWriteBlocked(kClosedStreamId, kSomeMiddlePriority),
 349       "Marking unknown stream 2 blocked.");
 350   */
 351 }
 352
 353 TEST_P(QuicSessionTest, DebugDFatalIfMarkWriteBlockedCalledWithWrongPriority) {
 354   const QuicPriority kDifferentPriority = 0;
 355
 356   TestStream* stream2 = session_.CreateOutgoingDataStream();
 357   EXPECT_NE(kDifferentPriority, stream2->EffectivePriority());
 358   // TODO(rtenneti): enable when chromium supports EXPECT_DEBUG_DFATAL.
 359   /*
 360   EXPECT_DEBUG_DFATAL(
 361       session_.MarkWriteBlocked(stream2->id(), kDifferentPriority),
 362       "Priorities do not match.  Got: 0 Expected: 3");
 363   */
 364 }
 365
 366 TEST_P(QuicSessionTest, OnCanWrite) {
 367   TestStream* stream2 = session_.CreateOutgoingDataStream();
 368   TestStream* stream4 = session_.CreateOutgoingDataStream();
 369   TestStream* stream6 = session_.CreateOutgoingDataStream();
 370
 371   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 372   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 373   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 374
 375   InSequence s;
 376   StreamBlocker stream2_blocker(&session_, stream2->id());
 377   // Reregister, to test the loop limit.
 378   EXPECT_CALL(*stream2, OnCanWrite())
 379       .WillOnce(Invoke(&stream2_blocker, &StreamBlocker::MarkWriteBlocked));
 380   EXPECT_CALL(*stream6, OnCanWrite());
 381   EXPECT_CALL(*stream4, OnCanWrite());
 382   session_.OnCanWrite();
 383   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 384 }
 385
 386 TEST_P(QuicSessionTest, OnCanWriteBundlesStreams) {
 387   // Drive congestion control manually.
 388   MockSendAlgorithm* send_algorithm = new StrictMock<MockSendAlgorithm>;
 389   QuicConnectionPeer::SetSendAlgorithm(session_.connection(), send_algorithm);
 390
 391   TestStream* stream2 = session_.CreateOutgoingDataStream();
 392   TestStream* stream4 = session_.CreateOutgoingDataStream();
 393   TestStream* stream6 = session_.CreateOutgoingDataStream();
 394
 395   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 396   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 397   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 398
 399   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillRepeatedly(
 400       Return(QuicTime::Delta::Zero()));
 401   EXPECT_CALL(*send_algorithm, GetCongestionWindow())
 402       .WillOnce(Return(kMaxPacketSize * 10));
 403   EXPECT_CALL(*stream2, OnCanWrite())
 404       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 405           &session_, &TestSession::SendStreamData, stream2->id()))));
 406   EXPECT_CALL(*stream4, OnCanWrite())
 407       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 408           &session_, &TestSession::SendStreamData, stream4->id()))));
 409   EXPECT_CALL(*stream6, OnCanWrite())
 410       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 411           &session_, &TestSession::SendStreamData, stream6->id()))));
 412
 413   // Expect that we only send one packet, the writes from different streams
 414   // should be bundled together.
 415   MockPacketWriter* writer =
 416       static_cast<MockPacketWriter*>(
 417           QuicConnectionPeer::GetWriter(session_.connection()));
 418   EXPECT_CALL(*writer, WritePacket(_, _, _, _)).WillOnce(
 419                   Return(WriteResult(WRITE_STATUS_OK, 0)));
 420   EXPECT_CALL(*send_algorithm, OnPacketSent(_, _, _, _, _)).Times(1);
 421   session_.OnCanWrite();
 422   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 423 }
 424
 425 TEST_P(QuicSessionTest, OnCanWriteCongestionControlBlocks) {
 426   InSequence s;
 427
 428   // Drive congestion control manually.
 429   MockSendAlgorithm* send_algorithm = new StrictMock<MockSendAlgorithm>;
 430   QuicConnectionPeer::SetSendAlgorithm(session_.connection(), send_algorithm);
 431
 432   TestStream* stream2 = session_.CreateOutgoingDataStream();
 433   TestStream* stream4 = session_.CreateOutgoingDataStream();
 434   TestStream* stream6 = session_.CreateOutgoingDataStream();
 435
 436   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 437   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 438   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 439
 440   StreamBlocker stream2_blocker(&session_, stream2->id());
 441   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 442       QuicTime::Delta::Zero()));
 443   EXPECT_CALL(*stream2, OnCanWrite());
 444   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 445       QuicTime::Delta::Zero()));
 446   EXPECT_CALL(*stream6, OnCanWrite());
 447   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 448       QuicTime::Delta::Infinite()));
 449   // stream4->OnCanWrite is not called.
 450
 451   session_.OnCanWrite();
 452   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 453
 454   // Still congestion-control blocked.
 455   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 456       QuicTime::Delta::Infinite()));
 457   session_.OnCanWrite();
 458   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 459
 460   // stream4->OnCanWrite is called once the connection stops being
 461   // congestion-control blocked.
 462   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 463       QuicTime::Delta::Zero()));
 464   EXPECT_CALL(*stream4, OnCanWrite());
 465   session_.OnCanWrite();
 466   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 467 }
 468
 469 TEST_P(QuicSessionTest, BufferedHandshake) {
 470   EXPECT_FALSE(session_.HasPendingHandshake());  // Default value.
 471
 472   // Test that blocking other streams does not change our status.
 473   TestStream* stream2 = session_.CreateOutgoingDataStream();
 474   StreamBlocker stream2_blocker(&session_, stream2->id());
 475   stream2_blocker.MarkWriteBlocked();
 476   EXPECT_FALSE(session_.HasPendingHandshake());
 477
 478   TestStream* stream3 = session_.CreateOutgoingDataStream();
 479   StreamBlocker stream3_blocker(&session_, stream3->id());
 480   stream3_blocker.MarkWriteBlocked();
 481   EXPECT_FALSE(session_.HasPendingHandshake());
 482
 483   // Blocking (due to buffering of) the Crypto stream is detected.
 484   session_.MarkWriteBlocked(kCryptoStreamId, kHighestPriority);
 485   EXPECT_TRUE(session_.HasPendingHandshake());
 486
 487   TestStream* stream4 = session_.CreateOutgoingDataStream();
 488   StreamBlocker stream4_blocker(&session_, stream4->id());
 489   stream4_blocker.MarkWriteBlocked();
 490   EXPECT_TRUE(session_.HasPendingHandshake());
 491
 492   InSequence s;
 493   // Force most streams to re-register, which is common scenario when we block
 494   // the Crypto stream, and only the crypto stream can "really" write.
 495
 496   // Due to prioritization, we *should* be asked to write the crypto stream
 497   // first.
 498   // Don't re-register the crypto stream (which signals complete writing).
 499   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 500   EXPECT_CALL(*crypto_stream, OnCanWrite());
 501
 502   // Re-register all other streams, to show they weren't able to proceed.
 503   EXPECT_CALL(*stream2, OnCanWrite())
 504       .WillOnce(Invoke(&stream2_blocker, &StreamBlocker::MarkWriteBlocked));
 505   EXPECT_CALL(*stream3, OnCanWrite())
 506       .WillOnce(Invoke(&stream3_blocker, &StreamBlocker::MarkWriteBlocked));
 507   EXPECT_CALL(*stream4, OnCanWrite())
 508       .WillOnce(Invoke(&stream4_blocker, &StreamBlocker::MarkWriteBlocked));
 509
 510   session_.OnCanWrite();
 511   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 512   EXPECT_FALSE(session_.HasPendingHandshake());  // Crypto stream wrote.
 513 }
 514
 515 TEST_P(QuicSessionTest, OnCanWriteWithClosedStream) {
 516   TestStream* stream2 = session_.CreateOutgoingDataStream();
 517   TestStream* stream4 = session_.CreateOutgoingDataStream();
 518   TestStream* stream6 = session_.CreateOutgoingDataStream();
 519
 520   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 521   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 522   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 523   CloseStream(stream6->id());
 524
 525   InSequence s;
 526   EXPECT_CALL(*stream2, OnCanWrite());
 527   EXPECT_CALL(*stream4, OnCanWrite());
 528   session_.OnCanWrite();
 529   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 530 }
 531
 532 TEST_P(QuicSessionTest, OnCanWriteLimitsNumWritesIfFlowControlBlocked) {
 533   // Ensure connection level flow control blockage.
 534   QuicFlowControllerPeer::SetSendWindowOffset(session_.flow_controller(), 0);
 535   EXPECT_TRUE(session_.flow_controller()->IsBlocked());
 536   EXPECT_TRUE(session_.IsConnectionFlowControlBlocked());
 537   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 538
 539   // Mark the crypto and headers streams as write blocked, we expect them to be
 540   // allowed to write later.
 541   session_.MarkWriteBlocked(kCryptoStreamId, kHighestPriority);
 542   session_.MarkWriteBlocked(kHeadersStreamId, kHighestPriority);
 543
 544   // Create a data stream, and although it is write blocked we never expect it
 545   // to be allowed to write as we are connection level flow control blocked.
 546   TestStream* stream = session_.CreateOutgoingDataStream();
 547   session_.MarkWriteBlocked(stream->id(), kSomeMiddlePriority);
 548   EXPECT_CALL(*stream, OnCanWrite()).Times(0);
 549
 550   // The crypto and headers streams should be called even though we are
 551   // connection flow control blocked.
 552   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 553   EXPECT_CALL(*crypto_stream, OnCanWrite()).Times(1);
 554   TestHeadersStream* headers_stream = new TestHeadersStream(&session_);
 555   QuicSessionPeer::SetHeadersStream(&session_, headers_stream);
 556   EXPECT_CALL(*headers_stream, OnCanWrite()).Times(1);
 557
 558   session_.OnCanWrite();
 559   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 560 }
 561
 562 TEST_P(QuicSessionTest, SendGoAway) {
 563   EXPECT_CALL(*connection_,
 564               SendGoAway(QUIC_PEER_GOING_AWAY, 0u, "Going Away."));
 565   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 566   EXPECT_TRUE(session_.goaway_sent());
 567
 568   EXPECT_CALL(*connection_,
 569               SendRstStream(3u, QUIC_STREAM_PEER_GOING_AWAY, 0)).Times(0);
 570   EXPECT_TRUE(session_.GetIncomingDataStream(3u));
 571 }
 572
 573 TEST_P(QuicSessionTest, DoNotSendGoAwayTwice) {
 574   EXPECT_CALL(*connection_,
 575               SendGoAway(QUIC_PEER_GOING_AWAY, 0u, "Going Away.")).Times(1);
 576   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 577   EXPECT_TRUE(session_.goaway_sent());
 578   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 579 }
 580
 581 TEST_P(QuicSessionTest, IncreasedTimeoutAfterCryptoHandshake) {
 582   EXPECT_EQ((FLAGS_quic_unified_timeouts ?
 583              kInitialIdleTimeoutSecs : kDefaultIdleTimeoutSecs) + 3,
 584             QuicConnectionPeer::GetNetworkTimeout(connection_).ToSeconds());
 585   CryptoHandshakeMessage msg;
 586   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 587   EXPECT_EQ(kMaximumIdleTimeoutSecs + 3,
 588             QuicConnectionPeer::GetNetworkTimeout(connection_).ToSeconds());
 589 }
 590
 591 TEST_P(QuicSessionTest, RstStreamBeforeHeadersDecompressed) {
 592   // Send two bytes of payload.
 593   QuicStreamFrame data1(kClientDataStreamId1, false, 0, MakeIOVector("HT"));
 594   vector<QuicStreamFrame> frames;
 595   frames.push_back(data1);
 596   session_.OnStreamFrames(frames);
 597   EXPECT_EQ(1u, session_.GetNumOpenStreams());
 598
 599   QuicRstStreamFrame rst1(kClientDataStreamId1, QUIC_STREAM_NO_ERROR, 0);
 600   session_.OnRstStream(rst1);
 601   EXPECT_EQ(0u, session_.GetNumOpenStreams());
 602   // Connection should remain alive.
 603   EXPECT_TRUE(connection_->connected());
 604 }
 605
 606 TEST_P(QuicSessionTest, MultipleRstStreamsCauseSingleConnectionClose) {
 607   // If multiple invalid reset stream frames arrive in a single packet, this
 608   // should trigger a connection close. However there is no need to send
 609   // multiple connection close frames.
 610
 611   // Create valid stream.
 612   QuicStreamFrame data1(kClientDataStreamId1, false, 0, MakeIOVector("HT"));
 613   vector<QuicStreamFrame> frames;
 614   frames.push_back(data1);
 615   session_.OnStreamFrames(frames);
 616   EXPECT_EQ(1u, session_.GetNumOpenStreams());
 617
 618   // Process first invalid stream reset, resulting in the connection being
 619   // closed.
 620   EXPECT_CALL(*connection_, SendConnectionClose(QUIC_INVALID_STREAM_ID))
 621       .Times(1);
 622   QuicStreamId kLargeInvalidStreamId = 99999999;
 623   QuicRstStreamFrame rst1(kLargeInvalidStreamId, QUIC_STREAM_NO_ERROR, 0);
 624   session_.OnRstStream(rst1);
 625   QuicConnectionPeer::CloseConnection(connection_);
 626
 627   // Processing of second invalid stream reset should not result in the
 628   // connection being closed for a second time.
 629   QuicRstStreamFrame rst2(kLargeInvalidStreamId, QUIC_STREAM_NO_ERROR, 0);
 630   session_.OnRstStream(rst2);
 631 }
 632
 633 TEST_P(QuicSessionTest, HandshakeUnblocksFlowControlBlockedStream) {
 634   // Test that if a stream is flow control blocked, then on receipt of the SHLO
 635   // containing a suitable send window offset, the stream becomes unblocked.
 636
 637   // Ensure that Writev consumes all the data it is given (simulate no socket
 638   // blocking).
 639   session_.set_writev_consumes_all_data(true);
 640
 641   // Create a stream, and send enough data to make it flow control blocked.
 642   TestStream* stream2 = session_.CreateOutgoingDataStream();
 643   string body(kDefaultFlowControlSendWindow, '.');
 644   EXPECT_FALSE(stream2->flow_controller()->IsBlocked());
 645   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 646   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 647   stream2->SendBody(body, false);
 648   EXPECT_TRUE(stream2->flow_controller()->IsBlocked());
 649   EXPECT_TRUE(session_.IsConnectionFlowControlBlocked());
 650   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 651
 652   // The handshake message will call OnCanWrite, so the stream can resume
 653   // writing.
 654   EXPECT_CALL(*stream2, OnCanWrite());
 655   // Now complete the crypto handshake, resulting in an increased flow control
 656   // send window.
 657   CryptoHandshakeMessage msg;
 658   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 659
 660   // Stream is now unblocked.
 661   EXPECT_FALSE(stream2->flow_controller()->IsBlocked());
 662   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 663   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 664 }
 665
 666 TEST_P(QuicSessionTest, HandshakeUnblocksFlowControlBlockedCryptoStream) {
 667   if (version() <= QUIC_VERSION_19) {
 668     return;
 669   }
 670   // Test that if the crypto stream is flow control blocked, then if the SHLO
 671   // contains a larger send window offset, the stream becomes unblocked.
 672   session_.set_writev_consumes_all_data(true);
 673   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 674   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 675   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 676   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 677   QuicHeadersStream* headers_stream =
 678       QuicSessionPeer::GetHeadersStream(&session_);
 679   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 680   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 681   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 682   // Write until the crypto stream is flow control blocked.
 683   int i = 0;
 684   while (!crypto_stream->flow_controller()->IsBlocked() && i < 1000) {
 685     EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 686     EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 687     QuicConfig config;
 688     CryptoHandshakeMessage crypto_message;
 689     config.ToHandshakeMessage(&crypto_message);
 690     crypto_stream->SendHandshakeMessage(crypto_message);
 691     ++i;
 692   }
 693   EXPECT_TRUE(crypto_stream->flow_controller()->IsBlocked());
 694   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 695   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 696   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 697   EXPECT_FALSE(session_.HasDataToWrite());
 698   EXPECT_TRUE(crypto_stream->HasBufferedData());
 699
 700   // The handshake message will call OnCanWrite, so the stream can
 701   // resume writing.
 702   EXPECT_CALL(*crypto_stream, OnCanWrite());
 703   // Now complete the crypto handshake, resulting in an increased flow control
 704   // send window.
 705   CryptoHandshakeMessage msg;
 706   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 707
 708   // Stream is now unblocked and will no longer have buffered data.
 709   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 710   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 711   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 712 }
 713
 714 TEST_P(QuicSessionTest, HandshakeUnblocksFlowControlBlockedHeadersStream) {
 715   if (version() <= QUIC_VERSION_19) {
 716     return;
 717   }
 718   // Test that if the header stream is flow control blocked, then if the SHLO
 719   // contains a larger send window offset, the stream becomes unblocked.
 720   session_.set_writev_consumes_all_data(true);
 721   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 722   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 723   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 724   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 725   QuicHeadersStream* headers_stream =
 726       QuicSessionPeer::GetHeadersStream(&session_);
 727   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 728   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 729   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 730   QuicStreamId stream_id = 5;
 731   // Write until the header stream is flow control blocked.
 732   SpdyHeaderBlock headers;
 733   while (!headers_stream->flow_controller()->IsBlocked() && stream_id < 2000) {
 734     EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 735     EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 736     headers["header"] = base::Uint64ToString(base::RandUint64()) +
 737         base::Uint64ToString(base::RandUint64()) +
 738         base::Uint64ToString(base::RandUint64());
 739     headers_stream->WriteHeaders(stream_id, headers, true, nullptr);
 740     stream_id += 2;
 741   }
 742   // Write one more to ensure that the headers stream has buffered data. The
 743   // random headers may have exactly filled the flow control window.
 744   headers_stream->WriteHeaders(stream_id, headers, true, nullptr);
 745   EXPECT_TRUE(headers_stream->HasBufferedData());
 746
 747   EXPECT_TRUE(headers_stream->flow_controller()->IsBlocked());
 748   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 749   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 750   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 751   EXPECT_FALSE(session_.HasDataToWrite());
 752
 753   // Now complete the crypto handshake, resulting in an increased flow control
 754   // send window.
 755   CryptoHandshakeMessage msg;
 756   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 757
 758   // Stream is now unblocked and will no longer have buffered data.
 759   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 760   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 761   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 762   EXPECT_FALSE(headers_stream->HasBufferedData());
 763 }
 764
 765 TEST_P(QuicSessionTest, InvalidFlowControlWindowInHandshake) {
 766   // TODO(rjshade): Remove this test when removing QUIC_VERSION_19.
 767   // Test that receipt of an invalid (< default) flow control window from
 768   // the peer results in the connection being torn down.
 769   if (version() > QUIC_VERSION_19) {
 770     return;
 771   }
 772
 773   uint32 kInvalidWindow = kDefaultFlowControlSendWindow - 1;
 774   QuicConfigPeer::SetReceivedInitialFlowControlWindow(session_.config(),
 775                                                       kInvalidWindow);
 776
 777   EXPECT_CALL(*connection_,
 778               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW)).Times(2);
 779   session_.OnConfigNegotiated();
 780 }
 781
 782 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingRstOutOfOrder) {
 783   // Test that when we receive an out of order stream RST we correctly adjust
 784   // our connection level flow control receive window.
 785   // On close, the stream should mark as consumed all bytes between the highest
 786   // byte consumed so far and the final byte offset from the RST frame.
 787   TestStream* stream = session_.CreateOutgoingDataStream();
 788
 789   const QuicStreamOffset kByteOffset =
 790       1 + kInitialSessionFlowControlWindowForTest / 2;
 791
 792   // Expect no stream WINDOW_UPDATE frames, as stream read side closed.
 793   EXPECT_CALL(*connection_, SendWindowUpdate(stream->id(), _)).Times(0);
 794   // We do expect a connection level WINDOW_UPDATE when the stream is reset.
 795   EXPECT_CALL(*connection_,
 796               SendWindowUpdate(0, kInitialSessionFlowControlWindowForTest +
 797                                       kByteOffset)).Times(1);
 798
 799   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 800                                kByteOffset);
 801   session_.OnRstStream(rst_frame);
 802   session_.PostProcessAfterData();
 803   EXPECT_EQ(kByteOffset, session_.flow_controller()->bytes_consumed());
 804 }
 805
 806 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingFinAndLocalReset) {
 807   // Test the situation where we receive a FIN on a stream, and before we fully
 808   // consume all the data from the sequencer buffer we locally RST the stream.
 809   // The bytes between highest consumed byte, and the final byte offset that we
 810   // determined when the FIN arrived, should be marked as consumed at the
 811   // connection level flow controller when the stream is reset.
 812   TestStream* stream = session_.CreateOutgoingDataStream();
 813
 814   const QuicStreamOffset kByteOffset =
 815       1 + kInitialSessionFlowControlWindowForTest / 2;
 816   QuicStreamFrame frame(stream->id(), true, kByteOffset, IOVector());
 817   vector<QuicStreamFrame> frames;
 818   frames.push_back(frame);
 819   session_.OnStreamFrames(frames);
 820   session_.PostProcessAfterData();
 821
 822   EXPECT_EQ(0u, stream->flow_controller()->bytes_consumed());
 823   EXPECT_EQ(kByteOffset,
 824             stream->flow_controller()->highest_received_byte_offset());
 825
 826   // We only expect to see a connection WINDOW_UPDATE when talking
 827   // QUIC_VERSION_19, as in this case both stream and session flow control
 828   // windows are the same size. In later versions we will not see a connection
 829   // level WINDOW_UPDATE when exhausting a stream, as the stream flow control
 830   // limit is much lower than the connection flow control limit.
 831   if (version() == QUIC_VERSION_19) {
 832     // Expect no stream WINDOW_UPDATE frames, as stream read side closed.
 833     EXPECT_CALL(*connection_, SendWindowUpdate(stream->id(), _)).Times(0);
 834     // We do expect a connection level WINDOW_UPDATE when the stream is reset.
 835     EXPECT_CALL(*connection_,
 836                 SendWindowUpdate(0, kInitialSessionFlowControlWindowForTest +
 837                                         kByteOffset)).Times(1);
 838   }
 839
 840   // Reset stream locally.
 841   stream->Reset(QUIC_STREAM_CANCELLED);
 842   EXPECT_EQ(kByteOffset, session_.flow_controller()->bytes_consumed());
 843 }
 844
 845 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingFinAfterRst) {
 846   // Test that when we RST the stream (and tear down stream state), and then
 847   // receive a FIN from the peer, we correctly adjust our connection level flow
 848   // control receive window.
 849
 850   // Connection starts with some non-zero highest received byte offset,
 851   // due to other active streams.
 852   const uint64 kInitialConnectionBytesConsumed = 567;
 853   const uint64 kInitialConnectionHighestReceivedOffset = 1234;
 854   EXPECT_LT(kInitialConnectionBytesConsumed,
 855             kInitialConnectionHighestReceivedOffset);
 856   session_.flow_controller()->UpdateHighestReceivedOffset(
 857       kInitialConnectionHighestReceivedOffset);
 858   session_.flow_controller()->AddBytesConsumed(kInitialConnectionBytesConsumed);
 859
 860   // Reset our stream: this results in the stream being closed locally.
 861   TestStream* stream = session_.CreateOutgoingDataStream();
 862   stream->Reset(QUIC_STREAM_CANCELLED);
 863
 864   // Now receive a response from the peer with a FIN. We should handle this by
 865   // adjusting the connection level flow control receive window to take into
 866   // account the total number of bytes sent by the peer.
 867   const QuicStreamOffset kByteOffset = 5678;
 868   string body = "hello";
 869   IOVector data = MakeIOVector(body);
 870   QuicStreamFrame frame(stream->id(), true, kByteOffset, data);
 871   vector<QuicStreamFrame> frames;
 872   frames.push_back(frame);
 873   session_.OnStreamFrames(frames);
 874
 875   QuicStreamOffset total_stream_bytes_sent_by_peer =
 876       kByteOffset + body.length();
 877   EXPECT_EQ(kInitialConnectionBytesConsumed + total_stream_bytes_sent_by_peer,
 878             session_.flow_controller()->bytes_consumed());
 879   EXPECT_EQ(
 880       kInitialConnectionHighestReceivedOffset + total_stream_bytes_sent_by_peer,
 881       session_.flow_controller()->highest_received_byte_offset());
 882 }
 883
 884 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingRstAfterRst) {
 885   // Test that when we RST the stream (and tear down stream state), and then
 886   // receive a RST from the peer, we correctly adjust our connection level flow
 887   // control receive window.
 888
 889   // Connection starts with some non-zero highest received byte offset,
 890   // due to other active streams.
 891   const uint64 kInitialConnectionBytesConsumed = 567;
 892   const uint64 kInitialConnectionHighestReceivedOffset = 1234;
 893   EXPECT_LT(kInitialConnectionBytesConsumed,
 894             kInitialConnectionHighestReceivedOffset);
 895   session_.flow_controller()->UpdateHighestReceivedOffset(
 896       kInitialConnectionHighestReceivedOffset);
 897   session_.flow_controller()->AddBytesConsumed(kInitialConnectionBytesConsumed);
 898
 899   // Reset our stream: this results in the stream being closed locally.
 900   TestStream* stream = session_.CreateOutgoingDataStream();
 901   stream->Reset(QUIC_STREAM_CANCELLED);
 902
 903   // Now receive a RST from the peer. We should handle this by adjusting the
 904   // connection level flow control receive window to take into account the total
 905   // number of bytes sent by the peer.
 906   const QuicStreamOffset kByteOffset = 5678;
 907   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 908                                kByteOffset);
 909   session_.OnRstStream(rst_frame);
 910
 911   EXPECT_EQ(kInitialConnectionBytesConsumed + kByteOffset,
 912             session_.flow_controller()->bytes_consumed());
 913   EXPECT_EQ(kInitialConnectionHighestReceivedOffset + kByteOffset,
 914             session_.flow_controller()->highest_received_byte_offset());
 915 }
 916
 917 TEST_P(QuicSessionTest, InvalidStreamFlowControlWindowInHandshake) {
 918   // Test that receipt of an invalid (< default) stream flow control window from
 919   // the peer results in the connection being torn down.
 920   if (version() <= QUIC_VERSION_19) {
 921     return;
 922   }
 923
 924   uint32 kInvalidWindow = kDefaultFlowControlSendWindow - 1;
 925   QuicConfigPeer::SetReceivedInitialStreamFlowControlWindow(session_.config(),
 926                                                             kInvalidWindow);
 927
 928   EXPECT_CALL(*connection_,
 929               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW));
 930   session_.OnConfigNegotiated();
 931 }
 932
 933 TEST_P(QuicSessionTest, InvalidSessionFlowControlWindowInHandshake) {
 934   // Test that receipt of an invalid (< default) session flow control window
 935   // from the peer results in the connection being torn down.
 936   if (version() == QUIC_VERSION_19) {
 937     return;
 938   }
 939
 940   uint32 kInvalidWindow = kDefaultFlowControlSendWindow - 1;
 941   QuicConfigPeer::SetReceivedInitialSessionFlowControlWindow(session_.config(),
 942                                                              kInvalidWindow);
 943
 944   EXPECT_CALL(*connection_,
 945               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW));
 946   session_.OnConfigNegotiated();
 947 }
 948
 949 TEST_P(QuicSessionTest, FlowControlWithInvalidFinalOffset) {
 950   // Test that if we receive a stream RST with a highest byte offset that
 951   // violates flow control, that we close the connection.
 952   const uint64 kLargeOffset = kInitialSessionFlowControlWindowForTest + 1;
 953   EXPECT_CALL(*connection_,
 954               SendConnectionClose(QUIC_FLOW_CONTROL_RECEIVED_TOO_MUCH_DATA))
 955       .Times(2);
 956
 957   // Check that stream frame + FIN results in connection close.
 958   TestStream* stream = session_.CreateOutgoingDataStream();
 959   stream->Reset(QUIC_STREAM_CANCELLED);
 960   QuicStreamFrame frame(stream->id(), true, kLargeOffset, IOVector());
 961   vector<QuicStreamFrame> frames;
 962   frames.push_back(frame);
 963   session_.OnStreamFrames(frames);
 964
 965   // Check that RST results in connection close.
 966   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 967                                kLargeOffset);
 968   session_.OnRstStream(rst_frame);
 969 }
 970
 971 TEST_P(QuicSessionTest, WindowUpdateUnblocksHeadersStream) {
 972   // Test that a flow control blocked headers stream gets unblocked on recipt of
 973   // a WINDOW_UPDATE frame. Regression test for b/17413860.
 974   if (version() < QUIC_VERSION_21) {
 975     return;
 976   }
 977
 978   // Set the headers stream to be flow control blocked.
 979   QuicHeadersStream* headers_stream =
 980       QuicSessionPeer::GetHeadersStream(&session_);
 981   QuicFlowControllerPeer::SetSendWindowOffset(headers_stream->flow_controller(),
 982                                               0);
 983   EXPECT_TRUE(headers_stream->flow_controller()->IsBlocked());
 984   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 985   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 986
 987   // Unblock the headers stream by supplying a WINDOW_UPDATE.
 988   QuicWindowUpdateFrame window_update_frame(headers_stream->id(),
 989                                             2 * kDefaultFlowControlSendWindow);
 990   vector<QuicWindowUpdateFrame> frames;
 991   frames.push_back(window_update_frame);
 992   session_.OnWindowUpdateFrames(frames);
 993   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 994   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 995   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 996 }
 997
 998 TEST_P(QuicSessionTest, TooManyUnfinishedStreamsCauseConnectionClose) {
 999   // If a buggy/malicious peer creates too many streams that are not ended with
1000   // a FIN or RST then we send a connection close.
1001   ValueRestore<bool> old_flag(&FLAGS_close_quic_connection_unfinished_streams_2,
1002                               true);
1003
1004   EXPECT_CALL(*connection_,
1005               SendConnectionClose(QUIC_TOO_MANY_UNFINISHED_STREAMS)).Times(1);
1006
1007   const int kMaxStreams = 5;
1008   QuicSessionPeer::SetMaxOpenStreams(&session_, kMaxStreams);
1009
1010   // Create kMaxStreams + 1 data streams, and close them all without receiving a
1011   // FIN or a RST from the client.
1012   const int kFirstStreamId = kClientDataStreamId1;
1013   const int kFinalStreamId = kClientDataStreamId1 + 2 * kMaxStreams + 1;
1014   for (int i = kFirstStreamId; i < kFinalStreamId; i += 2) {
1015     QuicStreamFrame data1(i, false, 0, MakeIOVector("HT"));
1016     vector<QuicStreamFrame> frames;
1017     frames.push_back(data1);
1018     session_.OnStreamFrames(frames);
1019     EXPECT_EQ(1u, session_.GetNumOpenStreams());
1020     session_.CloseStream(i);
1021   }
1022
1023   // Called after any new data is received by the session, and triggers the call
1024   // to close the connection.
1025   session_.PostProcessAfterData();
1026 }
1027
1028 }  // namespace
1029 }  // namespace test
1030 }  // namespace net