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_spdy_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::string;
  37 using std::vector;
  38 using testing::CreateFunctor;
  39 using testing::InSequence;
  40 using testing::Invoke;
  41 using testing::Return;
  42 using testing::StrictMock;
  43 using testing::_;
  44
  45 namespace net {
  46 namespace test {
  47 namespace {
  48
  49 const QuicPriority kHighestPriority = 0;
  50 const QuicPriority kSomeMiddlePriority = 3;
  51
  52 class TestCryptoStream : public QuicCryptoStream {
  53  public:
  54   explicit TestCryptoStream(QuicSession* session)
  55       : QuicCryptoStream(session) {
  56   }
  57
  58   void OnHandshakeMessage(const CryptoHandshakeMessage& message) override {
  59     encryption_established_ = true;
  60     handshake_confirmed_ = true;
  61     CryptoHandshakeMessage msg;
  62     string error_details;
  63     session()->config()->SetInitialStreamFlowControlWindowToSend(
  64         kInitialStreamFlowControlWindowForTest);
  65     session()->config()->SetInitialSessionFlowControlWindowToSend(
  66         kInitialSessionFlowControlWindowForTest);
  67     session()->config()->ToHandshakeMessage(&msg);
  68     const QuicErrorCode error = session()->config()->ProcessPeerHello(
  69         msg, CLIENT, &error_details);
  70     EXPECT_EQ(QUIC_NO_ERROR, error);
  71     session()->OnConfigNegotiated();
  72     session()->OnCryptoHandshakeEvent(QuicSession::HANDSHAKE_CONFIRMED);
  73   }
  74
  75   MOCK_METHOD0(OnCanWrite, void());
  76 };
  77
  78 class TestHeadersStream : public QuicHeadersStream {
  79  public:
  80   explicit TestHeadersStream(QuicSpdySession* session)
  81       : QuicHeadersStream(session) {}
  82
  83   MOCK_METHOD0(OnCanWrite, void());
  84 };
  85
  86 class TestStream : public QuicDataStream {
  87  public:
  88   TestStream(QuicStreamId id, QuicSpdySession* session)
  89       : QuicDataStream(id, session) {}
  90
  91   using ReliableQuicStream::CloseWriteSide;
  92
  93   uint32 ProcessData(const char* data, uint32 data_len) override {
  94     return data_len;
  95   }
  96
  97   void SendBody(const string& data, bool fin) {
  98     WriteOrBufferData(data, fin, nullptr);
  99   }
 100
 101   MOCK_METHOD0(OnCanWrite, void());
 102 };
 103
 104 // Poor man's functor for use as callback in a mock.
 105 class StreamBlocker {
 106  public:
 107   StreamBlocker(QuicSession* session, QuicStreamId stream_id)
 108       : session_(session),
 109         stream_id_(stream_id) {
 110   }
 111
 112   void MarkWriteBlocked() {
 113     session_->MarkWriteBlocked(stream_id_, kSomeMiddlePriority);
 114   }
 115
 116  private:
 117   QuicSession* const session_;
 118   const QuicStreamId stream_id_;
 119 };
 120
 121 class TestSession : public QuicSpdySession {
 122  public:
 123   explicit TestSession(QuicConnection* connection)
 124       : QuicSpdySession(connection, DefaultQuicConfig()),
 125         crypto_stream_(this),
 126         writev_consumes_all_data_(false) {
 127     Initialize();
 128   }
 129
 130   TestCryptoStream* GetCryptoStream() override { return &crypto_stream_; }
 131
 132   TestStream* CreateOutgoingDynamicStream() override {
 133     TestStream* stream = new TestStream(GetNextStreamId(), this);
 134     ActivateStream(stream);
 135     return stream;
 136   }
 137
 138   TestStream* CreateIncomingDynamicStream(QuicStreamId id) override {
 139     return new TestStream(id, this);
 140   }
 141
 142   bool IsClosedStream(QuicStreamId id) {
 143     return QuicSession::IsClosedStream(id);
 144   }
 145
 146   ReliableQuicStream* GetIncomingDynamicStream(QuicStreamId stream_id) {
 147     return QuicSpdySession::GetIncomingDynamicStream(stream_id);
 148   }
 149
 150   QuicConsumedData WritevData(
 151       QuicStreamId id,
 152       const QuicIOVector& data,
 153       QuicStreamOffset offset,
 154       bool fin,
 155       FecProtection fec_protection,
 156       QuicAckNotifier::DelegateInterface* ack_notifier_delegate) override {
 157     // Always consumes everything.
 158     if (writev_consumes_all_data_) {
 159       return QuicConsumedData(data.total_length, fin);
 160     } else {
 161       return QuicSession::WritevData(id, data, offset, fin, fec_protection,
 162                                      ack_notifier_delegate);
 163     }
 164   }
 165
 166   void set_writev_consumes_all_data(bool val) {
 167     writev_consumes_all_data_ = val;
 168   }
 169
 170   QuicConsumedData SendStreamData(QuicStreamId id) {
 171     struct iovec iov;
 172     return WritevData(id, MakeIOVector("not empty", &iov), 0, true,
 173                       MAY_FEC_PROTECT, nullptr);
 174   }
 175
 176   using QuicSession::PostProcessAfterData;
 177
 178  private:
 179   StrictMock<TestCryptoStream> crypto_stream_;
 180
 181   bool writev_consumes_all_data_;
 182 };
 183
 184 class QuicSessionTestBase : public ::testing::TestWithParam<QuicVersion> {
 185  protected:
 186   explicit QuicSessionTestBase(Perspective perspective)
 187       : connection_(
 188             new StrictMock<MockConnection>(perspective,
 189                                            SupportedVersions(GetParam()))),
 190         session_(connection_) {
 191     session_.config()->SetInitialStreamFlowControlWindowToSend(
 192         kInitialStreamFlowControlWindowForTest);
 193     session_.config()->SetInitialSessionFlowControlWindowToSend(
 194         kInitialSessionFlowControlWindowForTest);
 195     headers_[":host"] = "www.google.com";
 196     headers_[":path"] = "/index.hml";
 197     headers_[":scheme"] = "http";
 198     headers_["cookie"] =
 199         "__utma=208381060.1228362404.1372200928.1372200928.1372200928.1; "
 200         "__utmc=160408618; "
 201         "GX=DQAAAOEAAACWJYdewdE9rIrW6qw3PtVi2-d729qaa-74KqOsM1NVQblK4VhX"
 202         "hoALMsy6HOdDad2Sz0flUByv7etmo3mLMidGrBoljqO9hSVA40SLqpG_iuKKSHX"
 203         "RW3Np4bq0F0SDGDNsW0DSmTS9ufMRrlpARJDS7qAI6M3bghqJp4eABKZiRqebHT"
 204         "pMU-RXvTI5D5oCF1vYxYofH_l1Kviuiy3oQ1kS1enqWgbhJ2t61_SNdv-1XJIS0"
 205         "O3YeHLmVCs62O6zp89QwakfAWK9d3IDQvVSJzCQsvxvNIvaZFa567MawWlXg0Rh"
 206         "1zFMi5vzcns38-8_Sns; "
 207         "GA=v*2%2Fmem*57968640*47239936%2Fmem*57968640*47114716%2Fno-nm-"
 208         "yj*15%2Fno-cc-yj*5%2Fpc-ch*133685%2Fpc-s-cr*133947%2Fpc-s-t*1339"
 209         "47%2Fno-nm-yj*4%2Fno-cc-yj*1%2Fceft-as*1%2Fceft-nqas*0%2Fad-ra-c"
 210         "v_p%2Fad-nr-cv_p-f*1%2Fad-v-cv_p*859%2Fad-ns-cv_p-f*1%2Ffn-v-ad%"
 211         "2Fpc-t*250%2Fpc-cm*461%2Fpc-s-cr*722%2Fpc-s-t*722%2Fau_p*4"
 212         "SICAID=AJKiYcHdKgxum7KMXG0ei2t1-W4OD1uW-ecNsCqC0wDuAXiDGIcT_HA2o1"
 213         "3Rs1UKCuBAF9g8rWNOFbxt8PSNSHFuIhOo2t6bJAVpCsMU5Laa6lewuTMYI8MzdQP"
 214         "ARHKyW-koxuhMZHUnGBJAM1gJODe0cATO_KGoX4pbbFxxJ5IicRxOrWK_5rU3cdy6"
 215         "edlR9FsEdH6iujMcHkbE5l18ehJDwTWmBKBzVD87naobhMMrF6VvnDGxQVGp9Ir_b"
 216         "Rgj3RWUoPumQVCxtSOBdX0GlJOEcDTNCzQIm9BSfetog_eP_TfYubKudt5eMsXmN6"
 217         "QnyXHeGeK2UINUzJ-D30AFcpqYgH9_1BvYSpi7fc7_ydBU8TaD8ZRxvtnzXqj0RfG"
 218         "tuHghmv3aD-uzSYJ75XDdzKdizZ86IG6Fbn1XFhYZM-fbHhm3mVEXnyRW4ZuNOLFk"
 219         "Fas6LMcVC6Q8QLlHYbXBpdNFuGbuZGUnav5C-2I_-46lL0NGg3GewxGKGHvHEfoyn"
 220         "EFFlEYHsBQ98rXImL8ySDycdLEFvBPdtctPmWCfTxwmoSMLHU2SCVDhbqMWU5b0yr"
 221         "JBCScs_ejbKaqBDoB7ZGxTvqlrB__2ZmnHHjCr8RgMRtKNtIeuZAo ";
 222     connection_->AdvanceTime(QuicTime::Delta::FromSeconds(1));
 223   }
 224
 225   void CheckClosedStreams() {
 226     for (QuicStreamId i = kCryptoStreamId; i < 100; i++) {
 227       if (!ContainsKey(closed_streams_, i)) {
 228         EXPECT_FALSE(session_.IsClosedStream(i)) << " stream id: " << i;
 229       } else {
 230         EXPECT_TRUE(session_.IsClosedStream(i)) << " stream id: " << i;
 231       }
 232     }
 233   }
 234
 235   void CloseStream(QuicStreamId id) {
 236     EXPECT_CALL(*connection_, SendRstStream(id, _, _));
 237     session_.CloseStream(id);
 238     closed_streams_.insert(id);
 239   }
 240
 241   QuicVersion version() const { return connection_->version(); }
 242
 243   StrictMock<MockConnection>* connection_;
 244   TestSession session_;
 245   set<QuicStreamId> closed_streams_;
 246   SpdyHeaderBlock headers_;
 247 };
 248
 249 class QuicSessionTestServer : public QuicSessionTestBase {
 250  protected:
 251   QuicSessionTestServer() : QuicSessionTestBase(Perspective::IS_SERVER) {}
 252 };
 253
 254 INSTANTIATE_TEST_CASE_P(Tests,
 255                         QuicSessionTestServer,
 256                         ::testing::ValuesIn(QuicSupportedVersions()));
 257
 258 TEST_P(QuicSessionTestServer, PeerAddress) {
 259   EXPECT_EQ(IPEndPoint(Loopback4(), kTestPort), session_.peer_address());
 260 }
 261
 262 TEST_P(QuicSessionTestServer, IsCryptoHandshakeConfirmed) {
 263   EXPECT_FALSE(session_.IsCryptoHandshakeConfirmed());
 264   CryptoHandshakeMessage message;
 265   session_.GetCryptoStream()->OnHandshakeMessage(message);
 266   EXPECT_TRUE(session_.IsCryptoHandshakeConfirmed());
 267 }
 268
 269 TEST_P(QuicSessionTestServer, IsClosedStreamDefault) {
 270   // Ensure that no streams are initially closed.
 271   for (QuicStreamId i = kCryptoStreamId; i < 100; i++) {
 272     EXPECT_FALSE(session_.IsClosedStream(i)) << "stream id: " << i;
 273   }
 274 }
 275
 276 TEST_P(QuicSessionTestServer, ImplicitlyCreatedStreams) {
 277   ASSERT_TRUE(session_.GetIncomingDynamicStream(9) != nullptr);
 278   // Both 5 and 7 should be implicitly created.
 279   EXPECT_TRUE(QuicSessionPeer::IsStreamImplicitlyCreated(&session_, 5));
 280   EXPECT_TRUE(QuicSessionPeer::IsStreamImplicitlyCreated(&session_, 7));
 281   ASSERT_TRUE(session_.GetIncomingDynamicStream(7) != nullptr);
 282   ASSERT_TRUE(session_.GetIncomingDynamicStream(5) != nullptr);
 283 }
 284
 285 TEST_P(QuicSessionTestServer, IsClosedStreamLocallyCreated) {
 286   TestStream* stream2 = session_.CreateOutgoingDynamicStream();
 287   EXPECT_EQ(2u, stream2->id());
 288   TestStream* stream4 = session_.CreateOutgoingDynamicStream();
 289   EXPECT_EQ(4u, stream4->id());
 290
 291   CheckClosedStreams();
 292   CloseStream(4);
 293   CheckClosedStreams();
 294   CloseStream(2);
 295   CheckClosedStreams();
 296 }
 297
 298 TEST_P(QuicSessionTestServer, IsClosedStreamPeerCreated) {
 299   QuicStreamId stream_id1 = kClientDataStreamId1;
 300   QuicStreamId stream_id2 = kClientDataStreamId2;
 301   session_.GetIncomingDynamicStream(stream_id1);
 302   session_.GetIncomingDynamicStream(stream_id2);
 303
 304   CheckClosedStreams();
 305   CloseStream(stream_id1);
 306   CheckClosedStreams();
 307   CloseStream(stream_id2);
 308   // Create a stream explicitly, and another implicitly.
 309   ReliableQuicStream* stream3 =
 310       session_.GetIncomingDynamicStream(stream_id2 + 4);
 311   CheckClosedStreams();
 312   // Close one, but make sure the other is still not closed
 313   CloseStream(stream3->id());
 314   CheckClosedStreams();
 315 }
 316
 317 TEST_P(QuicSessionTestServer, StreamIdTooLarge) {
 318   QuicStreamId stream_id = kClientDataStreamId1;
 319   session_.GetIncomingDynamicStream(stream_id);
 320   EXPECT_CALL(*connection_, SendConnectionClose(QUIC_INVALID_STREAM_ID));
 321   session_.GetIncomingDynamicStream(stream_id + kMaxStreamIdDelta + 2);
 322 }
 323
 324 TEST_P(QuicSessionTestServer, DebugDFatalIfMarkingClosedStreamWriteBlocked) {
 325   TestStream* stream2 = session_.CreateOutgoingDynamicStream();
 326   QuicStreamId kClosedStreamId = stream2->id();
 327   // Close the stream.
 328   EXPECT_CALL(*connection_, SendRstStream(kClosedStreamId, _, _));
 329   stream2->Reset(QUIC_BAD_APPLICATION_PAYLOAD);
 330   EXPECT_DEBUG_DFATAL(
 331       session_.MarkWriteBlocked(kClosedStreamId, kSomeMiddlePriority),
 332       "Marking unknown stream 2 blocked.");
 333 }
 334
 335 TEST_P(QuicSessionTestServer,
 336        DebugDFatalIfMarkWriteBlockedCalledWithWrongPriority) {
 337   const QuicPriority kDifferentPriority = 0;
 338
 339   TestStream* stream2 = session_.CreateOutgoingDynamicStream();
 340   EXPECT_NE(kDifferentPriority, stream2->EffectivePriority());
 341   EXPECT_DEBUG_DFATAL(
 342       session_.MarkWriteBlocked(stream2->id(), kDifferentPriority),
 343       "Priorities do not match.  Got: 0 Expected: 3");
 344 }
 345
 346 TEST_P(QuicSessionTestServer, OnCanWrite) {
 347   TestStream* stream2 = session_.CreateOutgoingDynamicStream();
 348   TestStream* stream4 = session_.CreateOutgoingDynamicStream();
 349   TestStream* stream6 = session_.CreateOutgoingDynamicStream();
 350
 351   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 352   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 353   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 354
 355   InSequence s;
 356   StreamBlocker stream2_blocker(&session_, stream2->id());
 357   // Reregister, to test the loop limit.
 358   EXPECT_CALL(*stream2, OnCanWrite())
 359       .WillOnce(Invoke(&stream2_blocker, &StreamBlocker::MarkWriteBlocked));
 360   EXPECT_CALL(*stream6, OnCanWrite());
 361   EXPECT_CALL(*stream4, OnCanWrite());
 362   session_.OnCanWrite();
 363   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 364 }
 365
 366 TEST_P(QuicSessionTestServer, OnCanWriteBundlesStreams) {
 367   // Drive congestion control manually.
 368   MockSendAlgorithm* send_algorithm = new StrictMock<MockSendAlgorithm>;
 369   QuicConnectionPeer::SetSendAlgorithm(session_.connection(), send_algorithm);
 370
 371   TestStream* stream2 = session_.CreateOutgoingDynamicStream();
 372   TestStream* stream4 = session_.CreateOutgoingDynamicStream();
 373   TestStream* stream6 = session_.CreateOutgoingDynamicStream();
 374
 375   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 376   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 377   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 378
 379   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillRepeatedly(
 380       Return(QuicTime::Delta::Zero()));
 381   EXPECT_CALL(*send_algorithm, GetCongestionWindow())
 382       .WillRepeatedly(Return(kMaxPacketSize * 10));
 383   EXPECT_CALL(*stream2, OnCanWrite())
 384       .WillOnce(testing::IgnoreResult(Invoke(CreateFunctor(
 385           &session_, &TestSession::SendStreamData, stream2->id()))));
 386   EXPECT_CALL(*stream4, OnCanWrite())
 387       .WillOnce(testing::IgnoreResult(Invoke(CreateFunctor(
 388           &session_, &TestSession::SendStreamData, stream4->id()))));
 389   EXPECT_CALL(*stream6, OnCanWrite())
 390       .WillOnce(testing::IgnoreResult(Invoke(CreateFunctor(
 391           &session_, &TestSession::SendStreamData, stream6->id()))));
 392
 393   // Expect that we only send one packet, the writes from different streams
 394   // should be bundled together.
 395   MockPacketWriter* writer =
 396       static_cast<MockPacketWriter*>(
 397           QuicConnectionPeer::GetWriter(session_.connection()));
 398   EXPECT_CALL(*writer, WritePacket(_, _, _, _)).WillOnce(
 399                   Return(WriteResult(WRITE_STATUS_OK, 0)));
 400   EXPECT_CALL(*send_algorithm, OnPacketSent(_, _, _, _, _)).Times(1);
 401   session_.OnCanWrite();
 402   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 403 }
 404
 405 TEST_P(QuicSessionTestServer, OnCanWriteCongestionControlBlocks) {
 406   InSequence s;
 407
 408   // Drive congestion control manually.
 409   MockSendAlgorithm* send_algorithm = new StrictMock<MockSendAlgorithm>;
 410   QuicConnectionPeer::SetSendAlgorithm(session_.connection(), send_algorithm);
 411
 412   TestStream* stream2 = session_.CreateOutgoingDynamicStream();
 413   TestStream* stream4 = session_.CreateOutgoingDynamicStream();
 414   TestStream* stream6 = session_.CreateOutgoingDynamicStream();
 415
 416   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 417   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 418   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 419
 420   StreamBlocker stream2_blocker(&session_, stream2->id());
 421   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 422       QuicTime::Delta::Zero()));
 423   EXPECT_CALL(*stream2, OnCanWrite());
 424   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 425       QuicTime::Delta::Zero()));
 426   EXPECT_CALL(*stream6, OnCanWrite());
 427   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 428       QuicTime::Delta::Infinite()));
 429   // stream4->OnCanWrite is not called.
 430
 431   session_.OnCanWrite();
 432   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 433
 434   // Still congestion-control blocked.
 435   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 436       QuicTime::Delta::Infinite()));
 437   session_.OnCanWrite();
 438   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 439
 440   // stream4->OnCanWrite is called once the connection stops being
 441   // congestion-control blocked.
 442   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 443       QuicTime::Delta::Zero()));
 444   EXPECT_CALL(*stream4, OnCanWrite());
 445   session_.OnCanWrite();
 446   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 447 }
 448
 449 TEST_P(QuicSessionTestServer, BufferedHandshake) {
 450   EXPECT_FALSE(session_.HasPendingHandshake());  // Default value.
 451
 452   // Test that blocking other streams does not change our status.
 453   TestStream* stream2 = session_.CreateOutgoingDynamicStream();
 454   StreamBlocker stream2_blocker(&session_, stream2->id());
 455   stream2_blocker.MarkWriteBlocked();
 456   EXPECT_FALSE(session_.HasPendingHandshake());
 457
 458   TestStream* stream3 = session_.CreateOutgoingDynamicStream();
 459   StreamBlocker stream3_blocker(&session_, stream3->id());
 460   stream3_blocker.MarkWriteBlocked();
 461   EXPECT_FALSE(session_.HasPendingHandshake());
 462
 463   // Blocking (due to buffering of) the Crypto stream is detected.
 464   session_.MarkWriteBlocked(kCryptoStreamId, kHighestPriority);
 465   EXPECT_TRUE(session_.HasPendingHandshake());
 466
 467   TestStream* stream4 = session_.CreateOutgoingDynamicStream();
 468   StreamBlocker stream4_blocker(&session_, stream4->id());
 469   stream4_blocker.MarkWriteBlocked();
 470   EXPECT_TRUE(session_.HasPendingHandshake());
 471
 472   InSequence s;
 473   // Force most streams to re-register, which is common scenario when we block
 474   // the Crypto stream, and only the crypto stream can "really" write.
 475
 476   // Due to prioritization, we *should* be asked to write the crypto stream
 477   // first.
 478   // Don't re-register the crypto stream (which signals complete writing).
 479   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 480   EXPECT_CALL(*crypto_stream, OnCanWrite());
 481
 482   // Re-register all other streams, to show they weren't able to proceed.
 483   EXPECT_CALL(*stream2, OnCanWrite())
 484       .WillOnce(Invoke(&stream2_blocker, &StreamBlocker::MarkWriteBlocked));
 485   EXPECT_CALL(*stream3, OnCanWrite())
 486       .WillOnce(Invoke(&stream3_blocker, &StreamBlocker::MarkWriteBlocked));
 487   EXPECT_CALL(*stream4, OnCanWrite())
 488       .WillOnce(Invoke(&stream4_blocker, &StreamBlocker::MarkWriteBlocked));
 489
 490   session_.OnCanWrite();
 491   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 492   EXPECT_FALSE(session_.HasPendingHandshake());  // Crypto stream wrote.
 493 }
 494
 495 TEST_P(QuicSessionTestServer, OnCanWriteWithClosedStream) {
 496   TestStream* stream2 = session_.CreateOutgoingDynamicStream();
 497   TestStream* stream4 = session_.CreateOutgoingDynamicStream();
 498   TestStream* stream6 = session_.CreateOutgoingDynamicStream();
 499
 500   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 501   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 502   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 503   CloseStream(stream6->id());
 504
 505   InSequence s;
 506   EXPECT_CALL(*stream2, OnCanWrite());
 507   EXPECT_CALL(*stream4, OnCanWrite());
 508   session_.OnCanWrite();
 509   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 510 }
 511
 512 TEST_P(QuicSessionTestServer, OnCanWriteLimitsNumWritesIfFlowControlBlocked) {
 513   // Ensure connection level flow control blockage.
 514   QuicFlowControllerPeer::SetSendWindowOffset(session_.flow_controller(), 0);
 515   EXPECT_TRUE(session_.flow_controller()->IsBlocked());
 516   EXPECT_TRUE(session_.IsConnectionFlowControlBlocked());
 517   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 518
 519   // Mark the crypto and headers streams as write blocked, we expect them to be
 520   // allowed to write later.
 521   session_.MarkWriteBlocked(kCryptoStreamId, kHighestPriority);
 522   session_.MarkWriteBlocked(kHeadersStreamId, kHighestPriority);
 523
 524   // Create a data stream, and although it is write blocked we never expect it
 525   // to be allowed to write as we are connection level flow control blocked.
 526   TestStream* stream = session_.CreateOutgoingDynamicStream();
 527   session_.MarkWriteBlocked(stream->id(), kSomeMiddlePriority);
 528   EXPECT_CALL(*stream, OnCanWrite()).Times(0);
 529
 530   // The crypto and headers streams should be called even though we are
 531   // connection flow control blocked.
 532   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 533   EXPECT_CALL(*crypto_stream, OnCanWrite()).Times(1);
 534   TestHeadersStream* headers_stream = new TestHeadersStream(&session_);
 535   QuicSpdySessionPeer::SetHeadersStream(&session_, headers_stream);
 536   EXPECT_CALL(*headers_stream, OnCanWrite()).Times(1);
 537
 538   session_.OnCanWrite();
 539   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 540 }
 541
 542 TEST_P(QuicSessionTestServer, SendGoAway) {
 543   EXPECT_CALL(*connection_, SendGoAway(QUIC_PEER_GOING_AWAY, kHeadersStreamId,
 544                                        "Going Away."));
 545   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 546   EXPECT_TRUE(session_.goaway_sent());
 547
 548   const QuicStreamId kTestStreamId = 5u;
 549   EXPECT_CALL(*connection_,
 550               SendRstStream(kTestStreamId, QUIC_STREAM_PEER_GOING_AWAY, 0))
 551       .Times(0);
 552   EXPECT_TRUE(session_.GetIncomingDynamicStream(kTestStreamId));
 553 }
 554
 555 TEST_P(QuicSessionTestServer, DoNotSendGoAwayTwice) {
 556   EXPECT_CALL(*connection_, SendGoAway(QUIC_PEER_GOING_AWAY, kHeadersStreamId,
 557                                        "Going Away.")).Times(1);
 558   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 559   EXPECT_TRUE(session_.goaway_sent());
 560   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 561 }
 562
 563 TEST_P(QuicSessionTestServer, IncreasedTimeoutAfterCryptoHandshake) {
 564   EXPECT_EQ(kInitialIdleTimeoutSecs + 3,
 565             QuicConnectionPeer::GetNetworkTimeout(connection_).ToSeconds());
 566   CryptoHandshakeMessage msg;
 567   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 568   EXPECT_EQ(kMaximumIdleTimeoutSecs + 3,
 569             QuicConnectionPeer::GetNetworkTimeout(connection_).ToSeconds());
 570 }
 571
 572 TEST_P(QuicSessionTestServer, RstStreamBeforeHeadersDecompressed) {
 573   // Send two bytes of payload.
 574   QuicStreamFrame data1(kClientDataStreamId1, false, 0, StringPiece("HT"));
 575   vector<QuicStreamFrame> frames;
 576   frames.push_back(data1);
 577   session_.OnStreamFrames(frames);
 578   EXPECT_EQ(1u, session_.GetNumOpenStreams());
 579
 580   EXPECT_CALL(*connection_, SendRstStream(kClientDataStreamId1, _, _));
 581   QuicRstStreamFrame rst1(kClientDataStreamId1, QUIC_STREAM_NO_ERROR, 0);
 582   session_.OnRstStream(rst1);
 583   EXPECT_EQ(0u, session_.GetNumOpenStreams());
 584   // Connection should remain alive.
 585   EXPECT_TRUE(connection_->connected());
 586 }
 587
 588 TEST_P(QuicSessionTestServer, MultipleRstStreamsCauseSingleConnectionClose) {
 589   // If multiple invalid reset stream frames arrive in a single packet, this
 590   // should trigger a connection close. However there is no need to send
 591   // multiple connection close frames.
 592
 593   // Create valid stream.
 594   QuicStreamFrame data1(kClientDataStreamId1, false, 0, StringPiece("HT"));
 595   vector<QuicStreamFrame> frames;
 596   frames.push_back(data1);
 597   session_.OnStreamFrames(frames);
 598   EXPECT_EQ(1u, session_.GetNumOpenStreams());
 599
 600   // Process first invalid stream reset, resulting in the connection being
 601   // closed.
 602   EXPECT_CALL(*connection_, SendConnectionClose(QUIC_INVALID_STREAM_ID))
 603       .Times(1);
 604   const QuicStreamId kLargeInvalidStreamId = 99999999;
 605   QuicRstStreamFrame rst1(kLargeInvalidStreamId, QUIC_STREAM_NO_ERROR, 0);
 606   session_.OnRstStream(rst1);
 607   QuicConnectionPeer::CloseConnection(connection_);
 608
 609   // Processing of second invalid stream reset should not result in the
 610   // connection being closed for a second time.
 611   QuicRstStreamFrame rst2(kLargeInvalidStreamId, QUIC_STREAM_NO_ERROR, 0);
 612   session_.OnRstStream(rst2);
 613 }
 614
 615 TEST_P(QuicSessionTestServer, HandshakeUnblocksFlowControlBlockedStream) {
 616   // Test that if a stream is flow control blocked, then on receipt of the SHLO
 617   // containing a suitable send window offset, the stream becomes unblocked.
 618
 619   // Ensure that Writev consumes all the data it is given (simulate no socket
 620   // blocking).
 621   session_.set_writev_consumes_all_data(true);
 622
 623   // Create a stream, and send enough data to make it flow control blocked.
 624   TestStream* stream2 = session_.CreateOutgoingDynamicStream();
 625   string body(kMinimumFlowControlSendWindow, '.');
 626   EXPECT_FALSE(stream2->flow_controller()->IsBlocked());
 627   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 628   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 629   EXPECT_CALL(*connection_, SendBlocked(stream2->id()));
 630   EXPECT_CALL(*connection_, SendBlocked(0));
 631   stream2->SendBody(body, false);
 632   EXPECT_TRUE(stream2->flow_controller()->IsBlocked());
 633   EXPECT_TRUE(session_.IsConnectionFlowControlBlocked());
 634   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 635
 636   // The handshake message will call OnCanWrite, so the stream can resume
 637   // writing.
 638   EXPECT_CALL(*stream2, OnCanWrite());
 639   // Now complete the crypto handshake, resulting in an increased flow control
 640   // send window.
 641   CryptoHandshakeMessage msg;
 642   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 643
 644   // Stream is now unblocked.
 645   EXPECT_FALSE(stream2->flow_controller()->IsBlocked());
 646   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 647   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 648 }
 649
 650 TEST_P(QuicSessionTestServer, HandshakeUnblocksFlowControlBlockedCryptoStream) {
 651   // Test that if the crypto stream is flow control blocked, then if the SHLO
 652   // contains a larger send window offset, the stream becomes unblocked.
 653   session_.set_writev_consumes_all_data(true);
 654   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 655   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 656   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 657   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 658   QuicHeadersStream* headers_stream =
 659       QuicSpdySessionPeer::GetHeadersStream(&session_);
 660   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 661   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 662   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 663   // Write until the crypto stream is flow control blocked.
 664   EXPECT_CALL(*connection_, SendBlocked(kCryptoStreamId));
 665   for (QuicStreamId i = 0;
 666        !crypto_stream->flow_controller()->IsBlocked() && i < 1000u; i++) {
 667     EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 668     EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 669     QuicConfig config;
 670     CryptoHandshakeMessage crypto_message;
 671     config.ToHandshakeMessage(&crypto_message);
 672     crypto_stream->SendHandshakeMessage(crypto_message);
 673   }
 674   EXPECT_TRUE(crypto_stream->flow_controller()->IsBlocked());
 675   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 676   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 677   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 678   EXPECT_FALSE(session_.HasDataToWrite());
 679   EXPECT_TRUE(crypto_stream->HasBufferedData());
 680
 681   // The handshake message will call OnCanWrite, so the stream can
 682   // resume writing.
 683   EXPECT_CALL(*crypto_stream, OnCanWrite());
 684   // Now complete the crypto handshake, resulting in an increased flow control
 685   // send window.
 686   CryptoHandshakeMessage msg;
 687   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 688
 689   // Stream is now unblocked and will no longer have buffered data.
 690   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 691   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 692   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 693 }
 694
 695 TEST_P(QuicSessionTestServer,
 696        HandshakeUnblocksFlowControlBlockedHeadersStream) {
 697   // Test that if the header stream is flow control blocked, then if the SHLO
 698   // contains a larger send window offset, the stream becomes unblocked.
 699   session_.set_writev_consumes_all_data(true);
 700   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 701   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 702   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 703   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 704   QuicHeadersStream* headers_stream =
 705       QuicSpdySessionPeer::GetHeadersStream(&session_);
 706   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 707   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 708   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 709   QuicStreamId stream_id = 5;
 710   // Write until the header stream is flow control blocked.
 711   EXPECT_CALL(*connection_, SendBlocked(kHeadersStreamId));
 712   SpdyHeaderBlock headers;
 713   while (!headers_stream->flow_controller()->IsBlocked() && stream_id < 2000) {
 714     EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 715     EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 716     headers["header"] = base::Uint64ToString(base::RandUint64()) +
 717         base::Uint64ToString(base::RandUint64()) +
 718         base::Uint64ToString(base::RandUint64());
 719     headers_stream->WriteHeaders(stream_id, headers, true, 0, nullptr);
 720     stream_id += 2;
 721   }
 722   // Write once more to ensure that the headers stream has buffered data. The
 723   // random headers may have exactly filled the flow control window.
 724   headers_stream->WriteHeaders(stream_id, headers, true, 0, nullptr);
 725   EXPECT_TRUE(headers_stream->HasBufferedData());
 726
 727   EXPECT_TRUE(headers_stream->flow_controller()->IsBlocked());
 728   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 729   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 730   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 731   EXPECT_FALSE(session_.HasDataToWrite());
 732
 733   // Now complete the crypto handshake, resulting in an increased flow control
 734   // send window.
 735   CryptoHandshakeMessage msg;
 736   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 737
 738   // Stream is now unblocked and will no longer have buffered data.
 739   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 740   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 741   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 742   EXPECT_FALSE(headers_stream->HasBufferedData());
 743 }
 744
 745 TEST_P(QuicSessionTestServer, ConnectionFlowControlAccountingRstOutOfOrder) {
 746   // Test that when we receive an out of order stream RST we correctly adjust
 747   // our connection level flow control receive window.
 748   // On close, the stream should mark as consumed all bytes between the highest
 749   // byte consumed so far and the final byte offset from the RST frame.
 750   TestStream* stream = session_.CreateOutgoingDynamicStream();
 751
 752   const QuicStreamOffset kByteOffset =
 753       1 + kInitialSessionFlowControlWindowForTest / 2;
 754
 755   // Expect no stream WINDOW_UPDATE frames, as stream read side closed.
 756   EXPECT_CALL(*connection_, SendWindowUpdate(stream->id(), _)).Times(0);
 757   // We do expect a connection level WINDOW_UPDATE when the stream is reset.
 758   EXPECT_CALL(*connection_,
 759               SendWindowUpdate(0, kInitialSessionFlowControlWindowForTest +
 760                                       kByteOffset)).Times(1);
 761
 762   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 763   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 764                                kByteOffset);
 765   session_.OnRstStream(rst_frame);
 766   session_.PostProcessAfterData();
 767   EXPECT_EQ(kByteOffset, session_.flow_controller()->bytes_consumed());
 768 }
 769
 770 TEST_P(QuicSessionTestServer, ConnectionFlowControlAccountingFinAndLocalReset) {
 771   // Test the situation where we receive a FIN on a stream, and before we fully
 772   // consume all the data from the sequencer buffer we locally RST the stream.
 773   // The bytes between highest consumed byte, and the final byte offset that we
 774   // determined when the FIN arrived, should be marked as consumed at the
 775   // connection level flow controller when the stream is reset.
 776   TestStream* stream = session_.CreateOutgoingDynamicStream();
 777
 778   const QuicStreamOffset kByteOffset =
 779       kInitialSessionFlowControlWindowForTest / 2;
 780   QuicStreamFrame frame(stream->id(), true, kByteOffset, StringPiece());
 781   vector<QuicStreamFrame> frames;
 782   frames.push_back(frame);
 783   session_.OnStreamFrames(frames);
 784   session_.PostProcessAfterData();
 785   EXPECT_TRUE(connection_->connected());
 786
 787   EXPECT_EQ(0u, stream->flow_controller()->bytes_consumed());
 788   EXPECT_EQ(kByteOffset,
 789             stream->flow_controller()->highest_received_byte_offset());
 790
 791   // Reset stream locally.
 792   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 793   stream->Reset(QUIC_STREAM_CANCELLED);
 794   EXPECT_EQ(kByteOffset, session_.flow_controller()->bytes_consumed());
 795 }
 796
 797 TEST_P(QuicSessionTestServer, ConnectionFlowControlAccountingFinAfterRst) {
 798   // Test that when we RST the stream (and tear down stream state), and then
 799   // receive a FIN from the peer, we correctly adjust our connection level flow
 800   // control receive window.
 801
 802   // Connection starts with some non-zero highest received byte offset,
 803   // due to other active streams.
 804   const uint64 kInitialConnectionBytesConsumed = 567;
 805   const uint64 kInitialConnectionHighestReceivedOffset = 1234;
 806   EXPECT_LT(kInitialConnectionBytesConsumed,
 807             kInitialConnectionHighestReceivedOffset);
 808   session_.flow_controller()->UpdateHighestReceivedOffset(
 809       kInitialConnectionHighestReceivedOffset);
 810   session_.flow_controller()->AddBytesConsumed(kInitialConnectionBytesConsumed);
 811
 812   // Reset our stream: this results in the stream being closed locally.
 813   TestStream* stream = session_.CreateOutgoingDynamicStream();
 814   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 815   stream->Reset(QUIC_STREAM_CANCELLED);
 816
 817   // Now receive a response from the peer with a FIN. We should handle this by
 818   // adjusting the connection level flow control receive window to take into
 819   // account the total number of bytes sent by the peer.
 820   const QuicStreamOffset kByteOffset = 5678;
 821   string body = "hello";
 822   QuicStreamFrame frame(stream->id(), true, kByteOffset, StringPiece(body));
 823   vector<QuicStreamFrame> frames;
 824   frames.push_back(frame);
 825   session_.OnStreamFrames(frames);
 826
 827   QuicStreamOffset total_stream_bytes_sent_by_peer =
 828       kByteOffset + body.length();
 829   EXPECT_EQ(kInitialConnectionBytesConsumed + total_stream_bytes_sent_by_peer,
 830             session_.flow_controller()->bytes_consumed());
 831   EXPECT_EQ(
 832       kInitialConnectionHighestReceivedOffset + total_stream_bytes_sent_by_peer,
 833       session_.flow_controller()->highest_received_byte_offset());
 834 }
 835
 836 TEST_P(QuicSessionTestServer, ConnectionFlowControlAccountingRstAfterRst) {
 837   // Test that when we RST the stream (and tear down stream state), and then
 838   // receive a RST from the peer, we correctly adjust our connection level flow
 839   // control receive window.
 840
 841   // Connection starts with some non-zero highest received byte offset,
 842   // due to other active streams.
 843   const uint64 kInitialConnectionBytesConsumed = 567;
 844   const uint64 kInitialConnectionHighestReceivedOffset = 1234;
 845   EXPECT_LT(kInitialConnectionBytesConsumed,
 846             kInitialConnectionHighestReceivedOffset);
 847   session_.flow_controller()->UpdateHighestReceivedOffset(
 848       kInitialConnectionHighestReceivedOffset);
 849   session_.flow_controller()->AddBytesConsumed(kInitialConnectionBytesConsumed);
 850
 851   // Reset our stream: this results in the stream being closed locally.
 852   TestStream* stream = session_.CreateOutgoingDynamicStream();
 853   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 854   stream->Reset(QUIC_STREAM_CANCELLED);
 855
 856   // Now receive a RST from the peer. We should handle this by adjusting the
 857   // connection level flow control receive window to take into account the total
 858   // number of bytes sent by the peer.
 859   const QuicStreamOffset kByteOffset = 5678;
 860   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 861                                kByteOffset);
 862   session_.OnRstStream(rst_frame);
 863
 864   EXPECT_EQ(kInitialConnectionBytesConsumed + kByteOffset,
 865             session_.flow_controller()->bytes_consumed());
 866   EXPECT_EQ(kInitialConnectionHighestReceivedOffset + kByteOffset,
 867             session_.flow_controller()->highest_received_byte_offset());
 868 }
 869
 870 TEST_P(QuicSessionTestServer, InvalidStreamFlowControlWindowInHandshake) {
 871   // Test that receipt of an invalid (< default) stream flow control window from
 872   // the peer results in the connection being torn down.
 873   const uint32 kInvalidWindow = kMinimumFlowControlSendWindow - 1;
 874   QuicConfigPeer::SetReceivedInitialStreamFlowControlWindow(session_.config(),
 875                                                             kInvalidWindow);
 876
 877   EXPECT_CALL(*connection_,
 878               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW));
 879   session_.OnConfigNegotiated();
 880 }
 881
 882 TEST_P(QuicSessionTestServer, InvalidSessionFlowControlWindowInHandshake) {
 883   // Test that receipt of an invalid (< default) session flow control window
 884   // from the peer results in the connection being torn down.
 885   const uint32 kInvalidWindow = kMinimumFlowControlSendWindow - 1;
 886   QuicConfigPeer::SetReceivedInitialSessionFlowControlWindow(session_.config(),
 887                                                              kInvalidWindow);
 888
 889   EXPECT_CALL(*connection_,
 890               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW));
 891   session_.OnConfigNegotiated();
 892 }
 893
 894 TEST_P(QuicSessionTestServer, FlowControlWithInvalidFinalOffset) {
 895   // Test that if we receive a stream RST with a highest byte offset that
 896   // violates flow control, that we close the connection.
 897   const uint64 kLargeOffset = kInitialSessionFlowControlWindowForTest + 1;
 898   EXPECT_CALL(*connection_,
 899               SendConnectionClose(QUIC_FLOW_CONTROL_RECEIVED_TOO_MUCH_DATA))
 900       .Times(2);
 901
 902   // Check that stream frame + FIN results in connection close.
 903   TestStream* stream = session_.CreateOutgoingDynamicStream();
 904   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 905   stream->Reset(QUIC_STREAM_CANCELLED);
 906   QuicStreamFrame frame(stream->id(), true, kLargeOffset, StringPiece());
 907   vector<QuicStreamFrame> frames;
 908   frames.push_back(frame);
 909   session_.OnStreamFrames(frames);
 910
 911   // Check that RST results in connection close.
 912   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 913                                kLargeOffset);
 914   session_.OnRstStream(rst_frame);
 915 }
 916
 917 TEST_P(QuicSessionTestServer, WindowUpdateUnblocksHeadersStream) {
 918   // Test that a flow control blocked headers stream gets unblocked on recipt of
 919   // a WINDOW_UPDATE frame.
 920
 921   // Set the headers stream to be flow control blocked.
 922   QuicHeadersStream* headers_stream =
 923       QuicSpdySessionPeer::GetHeadersStream(&session_);
 924   QuicFlowControllerPeer::SetSendWindowOffset(headers_stream->flow_controller(),
 925                                               0);
 926   EXPECT_TRUE(headers_stream->flow_controller()->IsBlocked());
 927   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 928   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 929
 930   // Unblock the headers stream by supplying a WINDOW_UPDATE.
 931   QuicWindowUpdateFrame window_update_frame(headers_stream->id(),
 932                                             2 * kMinimumFlowControlSendWindow);
 933   vector<QuicWindowUpdateFrame> frames;
 934   frames.push_back(window_update_frame);
 935   session_.OnWindowUpdateFrames(frames);
 936   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 937   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 938   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 939 }
 940
 941 TEST_P(QuicSessionTestServer, TooManyUnfinishedStreamsCauseConnectionClose) {
 942   // If a buggy/malicious peer creates too many streams that are not ended with
 943   // a FIN or RST then we send a connection close.
 944   EXPECT_CALL(*connection_,
 945               SendConnectionClose(QUIC_TOO_MANY_UNFINISHED_STREAMS)).Times(1);
 946
 947   const QuicStreamId kMaxStreams = 5;
 948   QuicSessionPeer::SetMaxOpenStreams(&session_, kMaxStreams);
 949
 950   // Create kMaxStreams + 1 data streams, and close them all without receiving a
 951   // FIN or a RST_STREAM from the client.
 952   const QuicStreamId kFirstStreamId = kClientDataStreamId1;
 953   const QuicStreamId kFinalStreamId =
 954       kClientDataStreamId1 + 2 * kMaxStreams + 1;
 955   for (QuicStreamId i = kFirstStreamId; i < kFinalStreamId; i += 2) {
 956     QuicStreamFrame data1(i, false, 0, StringPiece("HT"));
 957     vector<QuicStreamFrame> frames;
 958     frames.push_back(data1);
 959     session_.OnStreamFrames(frames);
 960     EXPECT_EQ(1u, session_.GetNumOpenStreams());
 961     EXPECT_CALL(*connection_, SendRstStream(i, _, _));
 962     session_.CloseStream(i);
 963   }
 964
 965   // Called after any new data is received by the session, and triggers the call
 966   // to close the connection.
 967   session_.PostProcessAfterData();
 968 }
 969
 970 TEST_P(QuicSessionTestServer, DrainingStreamsDoNotCountAsOpened) {
 971   // Verify that a draining stream (which has received a FIN but not consumed
 972   // it) does not count against the open quota (because it is closed from the
 973   // protocol point of view).
 974   EXPECT_CALL(*connection_,
 975               SendConnectionClose(QUIC_TOO_MANY_UNFINISHED_STREAMS)).Times(0);
 976
 977   const QuicStreamId kMaxStreams = 5;
 978   QuicSessionPeer::SetMaxOpenStreams(&session_, kMaxStreams);
 979
 980   // Create kMaxStreams + 1 data streams, and mark them draining.
 981   const QuicStreamId kFirstStreamId = kClientDataStreamId1;
 982   const QuicStreamId kFinalStreamId =
 983       kClientDataStreamId1 + 2 * kMaxStreams + 1;
 984   for (QuicStreamId i = kFirstStreamId; i < kFinalStreamId; i += 2) {
 985     QuicStreamFrame data1(i, true, 0, StringPiece("HT"));
 986     vector<QuicStreamFrame> frames;
 987     frames.push_back(data1);
 988     session_.OnStreamFrames(frames);
 989     EXPECT_EQ(1u, session_.GetNumOpenStreams());
 990     session_.StreamDraining(i);
 991     EXPECT_EQ(0u, session_.GetNumOpenStreams());
 992   }
 993
 994   // Called after any new data is received by the session, and triggers the call
 995   // to close the connection.
 996   session_.PostProcessAfterData();
 997 }
 998
 999 class QuicSessionTestClient : public QuicSessionTestBase {
1000  protected:
1001   QuicSessionTestClient() : QuicSessionTestBase(Perspective::IS_CLIENT) {}
1002 };
1003
1004 INSTANTIATE_TEST_CASE_P(Tests,
1005                         QuicSessionTestClient,
1006                         ::testing::ValuesIn(QuicSupportedVersions()));
1007
1008 TEST_P(QuicSessionTestClient, ImplicitlyCreatedStreamsClient) {
1009   ASSERT_TRUE(session_.GetIncomingDynamicStream(6) != nullptr);
1010   // Both 2 and 4 should be implicitly created.
1011   EXPECT_TRUE(QuicSessionPeer::IsStreamImplicitlyCreated(&session_, 2));
1012   EXPECT_TRUE(QuicSessionPeer::IsStreamImplicitlyCreated(&session_, 4));
1013   ASSERT_TRUE(session_.GetIncomingDynamicStream(2) != nullptr);
1014   ASSERT_TRUE(session_.GetIncomingDynamicStream(4) != nullptr);
1015   // And 5 should be not implicitly created.
1016   EXPECT_FALSE(QuicSessionPeer::IsStreamImplicitlyCreated(&session_, 5));
1017 }
1018
1019 }  // namespace
1020 }  // namespace test
1021 }  // namespace net