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_protocol.h"
  17 #include "net/quic/quic_utils.h"
  18 #include "net/quic/reliable_quic_stream.h"
  19 #include "net/quic/test_tools/quic_config_peer.h"
  20 #include "net/quic/test_tools/quic_connection_peer.h"
  21 #include "net/quic/test_tools/quic_data_stream_peer.h"
  22 #include "net/quic/test_tools/quic_flow_controller_peer.h"
  23 #include "net/quic/test_tools/quic_session_peer.h"
  24 #include "net/quic/test_tools/quic_spdy_session_peer.h"
  25 #include "net/quic/test_tools/quic_test_utils.h"
  26 #include "net/quic/test_tools/reliable_quic_stream_peer.h"
  27 #include "net/spdy/spdy_framer.h"
  28 #include "net/test/gtest_util.h"
  29 #include "testing/gmock/include/gmock/gmock.h"
  30 #include "testing/gmock_mutant.h"
  31 #include "testing/gtest/include/gtest/gtest.h"
  32
  33 using base::hash_map;
  34 using std::set;
  35 using std::string;
  36 using std::vector;
  37 using testing::CreateFunctor;
  38 using testing::InSequence;
  39 using testing::Invoke;
  40 using testing::Return;
  41 using testing::StrictMock;
  42 using testing::_;
  43
  44 namespace net {
  45 namespace test {
  46 namespace {
  47
  48 const QuicPriority kHighestPriority = 0;
  49 const QuicPriority kSomeMiddlePriority = 3;
  50
  51 class TestCryptoStream : public QuicCryptoStream {
  52  public:
  53   explicit TestCryptoStream(QuicSession* session)
  54       : QuicCryptoStream(session) {
  55   }
  56
  57   void OnHandshakeMessage(const CryptoHandshakeMessage& message) override {
  58     encryption_established_ = true;
  59     handshake_confirmed_ = true;
  60     CryptoHandshakeMessage msg;
  61     string error_details;
  62     session()->config()->SetInitialStreamFlowControlWindowToSend(
  63         kInitialStreamFlowControlWindowForTest);
  64     session()->config()->SetInitialSessionFlowControlWindowToSend(
  65         kInitialSessionFlowControlWindowForTest);
  66     session()->config()->ToHandshakeMessage(&msg);
  67     const QuicErrorCode error = session()->config()->ProcessPeerHello(
  68         msg, CLIENT, &error_details);
  69     EXPECT_EQ(QUIC_NO_ERROR, error);
  70     session()->OnConfigNegotiated();
  71     session()->OnCryptoHandshakeEvent(QuicSession::HANDSHAKE_CONFIRMED);
  72   }
  73
  74   MOCK_METHOD0(OnCanWrite, void());
  75 };
  76
  77 class TestHeadersStream : public QuicHeadersStream {
  78  public:
  79   explicit TestHeadersStream(QuicSpdySession* session)
  80       : QuicHeadersStream(session) {}
  81
  82   MOCK_METHOD0(OnCanWrite, void());
  83 };
  84
  85 class TestStream : public QuicDataStream {
  86  public:
  87   TestStream(QuicStreamId id, QuicSpdySession* session)
  88       : QuicDataStream(id, session) {}
  89
  90   using ReliableQuicStream::CloseWriteSide;
  91
  92   void OnDataAvailable() override {}
  93
  94   void SendBody(const string& data, bool fin) {
  95     WriteOrBufferData(data, fin, nullptr);
  96   }
  97
  98   MOCK_METHOD0(OnCanWrite, void());
  99 };
 100
 101 // Poor man's functor for use as callback in a mock.
 102 class StreamBlocker {
 103  public:
 104   StreamBlocker(QuicSession* session, QuicStreamId stream_id)
 105       : session_(session),
 106         stream_id_(stream_id) {
 107   }
 108
 109   void MarkConnectionLevelWriteBlocked() {
 110     session_->MarkConnectionLevelWriteBlocked(stream_id_, kSomeMiddlePriority);
 111   }
 112
 113  private:
 114   QuicSession* const session_;
 115   const QuicStreamId stream_id_;
 116 };
 117
 118 class TestSession : public QuicSpdySession {
 119  public:
 120   explicit TestSession(QuicConnection* connection)
 121       : QuicSpdySession(connection, DefaultQuicConfig()),
 122         crypto_stream_(this),
 123         writev_consumes_all_data_(false) {
 124     Initialize();
 125   }
 126
 127   TestCryptoStream* GetCryptoStream() override { return &crypto_stream_; }
 128
 129   TestStream* CreateOutgoingDynamicStream() override {
 130     TestStream* stream = new TestStream(GetNextStreamId(), this);
 131     ActivateStream(stream);
 132     return stream;
 133   }
 134
 135   TestStream* CreateIncomingDynamicStream(QuicStreamId id) override {
 136     // Enforce the limit on the number of open streams.
 137     if (GetNumOpenStreams() + 1 > get_max_open_streams()) {
 138       connection()->SendConnectionClose(QUIC_TOO_MANY_OPEN_STREAMS);
 139       return nullptr;
 140     } else {
 141       return new TestStream(id, this);
 142     }
 143   }
 144
 145   bool IsClosedStream(QuicStreamId id) {
 146     return QuicSession::IsClosedStream(id);
 147   }
 148
 149   ReliableQuicStream* GetIncomingDynamicStream(QuicStreamId stream_id) {
 150     return QuicSpdySession::GetIncomingDynamicStream(stream_id);
 151   }
 152
 153   QuicConsumedData WritevData(
 154       QuicStreamId id,
 155       const QuicIOVector& data,
 156       QuicStreamOffset offset,
 157       bool fin,
 158       FecProtection fec_protection,
 159       QuicAckNotifier::DelegateInterface* ack_notifier_delegate) override {
 160     // Always consumes everything.
 161     if (writev_consumes_all_data_) {
 162       return QuicConsumedData(data.total_length, fin);
 163     } else {
 164       return QuicSession::WritevData(id, data, offset, fin, fec_protection,
 165                                      ack_notifier_delegate);
 166     }
 167   }
 168
 169   void set_writev_consumes_all_data(bool val) {
 170     writev_consumes_all_data_ = val;
 171   }
 172
 173   QuicConsumedData SendStreamData(QuicStreamId id) {
 174     struct iovec iov;
 175     return WritevData(id, MakeIOVector("not empty", &iov), 0, true,
 176                       MAY_FEC_PROTECT, nullptr);
 177   }
 178
 179   using QuicSession::PostProcessAfterData;
 180
 181  private:
 182   StrictMock<TestCryptoStream> crypto_stream_;
 183
 184   bool writev_consumes_all_data_;
 185 };
 186
 187 class QuicSessionTestBase : public ::testing::TestWithParam<QuicVersion> {
 188  protected:
 189   explicit QuicSessionTestBase(Perspective perspective)
 190       : connection_(
 191             new StrictMock<MockConnection>(perspective,
 192                                            SupportedVersions(GetParam()))),
 193         session_(connection_) {
 194     session_.config()->SetInitialStreamFlowControlWindowToSend(
 195         kInitialStreamFlowControlWindowForTest);
 196     session_.config()->SetInitialSessionFlowControlWindowToSend(
 197         kInitialSessionFlowControlWindowForTest);
 198     headers_[":host"] = "www.google.com";
 199     headers_[":path"] = "/index.hml";
 200     headers_[":scheme"] = "http";
 201     headers_["cookie"] =
 202         "__utma=208381060.1228362404.1372200928.1372200928.1372200928.1; "
 203         "__utmc=160408618; "
 204         "GX=DQAAAOEAAACWJYdewdE9rIrW6qw3PtVi2-d729qaa-74KqOsM1NVQblK4VhX"
 205         "hoALMsy6HOdDad2Sz0flUByv7etmo3mLMidGrBoljqO9hSVA40SLqpG_iuKKSHX"
 206         "RW3Np4bq0F0SDGDNsW0DSmTS9ufMRrlpARJDS7qAI6M3bghqJp4eABKZiRqebHT"
 207         "pMU-RXvTI5D5oCF1vYxYofH_l1Kviuiy3oQ1kS1enqWgbhJ2t61_SNdv-1XJIS0"
 208         "O3YeHLmVCs62O6zp89QwakfAWK9d3IDQvVSJzCQsvxvNIvaZFa567MawWlXg0Rh"
 209         "1zFMi5vzcns38-8_Sns; "
 210         "GA=v*2%2Fmem*57968640*47239936%2Fmem*57968640*47114716%2Fno-nm-"
 211         "yj*15%2Fno-cc-yj*5%2Fpc-ch*133685%2Fpc-s-cr*133947%2Fpc-s-t*1339"
 212         "47%2Fno-nm-yj*4%2Fno-cc-yj*1%2Fceft-as*1%2Fceft-nqas*0%2Fad-ra-c"
 213         "v_p%2Fad-nr-cv_p-f*1%2Fad-v-cv_p*859%2Fad-ns-cv_p-f*1%2Ffn-v-ad%"
 214         "2Fpc-t*250%2Fpc-cm*461%2Fpc-s-cr*722%2Fpc-s-t*722%2Fau_p*4"
 215         "SICAID=AJKiYcHdKgxum7KMXG0ei2t1-W4OD1uW-ecNsCqC0wDuAXiDGIcT_HA2o1"
 216         "3Rs1UKCuBAF9g8rWNOFbxt8PSNSHFuIhOo2t6bJAVpCsMU5Laa6lewuTMYI8MzdQP"
 217         "ARHKyW-koxuhMZHUnGBJAM1gJODe0cATO_KGoX4pbbFxxJ5IicRxOrWK_5rU3cdy6"
 218         "edlR9FsEdH6iujMcHkbE5l18ehJDwTWmBKBzVD87naobhMMrF6VvnDGxQVGp9Ir_b"
 219         "Rgj3RWUoPumQVCxtSOBdX0GlJOEcDTNCzQIm9BSfetog_eP_TfYubKudt5eMsXmN6"
 220         "QnyXHeGeK2UINUzJ-D30AFcpqYgH9_1BvYSpi7fc7_ydBU8TaD8ZRxvtnzXqj0RfG"
 221         "tuHghmv3aD-uzSYJ75XDdzKdizZ86IG6Fbn1XFhYZM-fbHhm3mVEXnyRW4ZuNOLFk"
 222         "Fas6LMcVC6Q8QLlHYbXBpdNFuGbuZGUnav5C-2I_-46lL0NGg3GewxGKGHvHEfoyn"
 223         "EFFlEYHsBQ98rXImL8ySDycdLEFvBPdtctPmWCfTxwmoSMLHU2SCVDhbqMWU5b0yr"
 224         "JBCScs_ejbKaqBDoB7ZGxTvqlrB__2ZmnHHjCr8RgMRtKNtIeuZAo ";
 225     connection_->AdvanceTime(QuicTime::Delta::FromSeconds(1));
 226   }
 227
 228   void CheckClosedStreams() {
 229     for (QuicStreamId i = kCryptoStreamId; i < 100; i++) {
 230       if (!ContainsKey(closed_streams_, i)) {
 231         EXPECT_FALSE(session_.IsClosedStream(i)) << " stream id: " << i;
 232       } else {
 233         EXPECT_TRUE(session_.IsClosedStream(i)) << " stream id: " << i;
 234       }
 235     }
 236   }
 237
 238   void CloseStream(QuicStreamId id) {
 239     EXPECT_CALL(*connection_, SendRstStream(id, _, _));
 240     session_.CloseStream(id);
 241     closed_streams_.insert(id);
 242   }
 243
 244   QuicVersion version() const { return connection_->version(); }
 245
 246   StrictMock<MockConnection>* connection_;
 247   TestSession session_;
 248   set<QuicStreamId> closed_streams_;
 249   SpdyHeaderBlock headers_;
 250 };
 251
 252 class QuicSessionTestServer : public QuicSessionTestBase {
 253  protected:
 254   QuicSessionTestServer() : QuicSessionTestBase(Perspective::IS_SERVER) {}
 255 };
 256
 257 INSTANTIATE_TEST_CASE_P(Tests,
 258                         QuicSessionTestServer,
 259                         ::testing::ValuesIn(QuicSupportedVersions()));
 260
 261 TEST_P(QuicSessionTestServer, PeerAddress) {
 262   EXPECT_EQ(IPEndPoint(Loopback4(), kTestPort), session_.peer_address());
 263 }
 264
 265 TEST_P(QuicSessionTestServer, IsCryptoHandshakeConfirmed) {
 266   EXPECT_FALSE(session_.IsCryptoHandshakeConfirmed());
 267   CryptoHandshakeMessage message;
 268   session_.GetCryptoStream()->OnHandshakeMessage(message);
 269   EXPECT_TRUE(session_.IsCryptoHandshakeConfirmed());
 270 }
 271
 272 TEST_P(QuicSessionTestServer, IsClosedStreamDefault) {
 273   // Ensure that no streams are initially closed.
 274   for (QuicStreamId i = kCryptoStreamId; i < 100; i++) {
 275     EXPECT_FALSE(session_.IsClosedStream(i)) << "stream id: " << i;
 276   }
 277 }
 278
 279 TEST_P(QuicSessionTestServer, ImplicitlyCreatedStreams) {
 280   ASSERT_TRUE(session_.GetIncomingDynamicStream(9) != nullptr);
 281   // Both 5 and 7 should be implicitly created.
 282   EXPECT_TRUE(QuicSessionPeer::IsStreamImplicitlyCreated(&session_, 5));
 283   EXPECT_TRUE(QuicSessionPeer::IsStreamImplicitlyCreated(&session_, 7));
 284   ASSERT_TRUE(session_.GetIncomingDynamicStream(7) != nullptr);
 285   ASSERT_TRUE(session_.GetIncomingDynamicStream(5) != nullptr);
 286 }
 287
 288 TEST_P(QuicSessionTestServer, IsClosedStreamLocallyCreated) {
 289   TestStream* stream2 = session_.CreateOutgoingDynamicStream();
 290   EXPECT_EQ(2u, stream2->id());
 291   TestStream* stream4 = session_.CreateOutgoingDynamicStream();
 292   EXPECT_EQ(4u, stream4->id());
 293
 294   CheckClosedStreams();
 295   CloseStream(4);
 296   CheckClosedStreams();
 297   CloseStream(2);
 298   CheckClosedStreams();
 299 }
 300
 301 TEST_P(QuicSessionTestServer, IsClosedStreamPeerCreated) {
 302   QuicStreamId stream_id1 = kClientDataStreamId1;
 303   QuicStreamId stream_id2 = kClientDataStreamId2;
 304   session_.GetIncomingDynamicStream(stream_id1);
 305   session_.GetIncomingDynamicStream(stream_id2);
 306
 307   CheckClosedStreams();
 308   CloseStream(stream_id1);
 309   CheckClosedStreams();
 310   CloseStream(stream_id2);
 311   // Create a stream explicitly, and another implicitly.
 312   ReliableQuicStream* stream3 =
 313       session_.GetIncomingDynamicStream(stream_id2 + 4);
 314   CheckClosedStreams();
 315   // Close one, but make sure the other is still not closed
 316   CloseStream(stream3->id());
 317   CheckClosedStreams();
 318 }
 319
 320 TEST_P(QuicSessionTestServer, MaximumImplicitlyOpenedStreams) {
 321   QuicStreamId stream_id = kClientDataStreamId1;
 322   session_.GetIncomingDynamicStream(stream_id);
 323   EXPECT_CALL(*connection_, SendConnectionClose(_)).Times(0);
 324   EXPECT_NE(nullptr,
 325             session_.GetIncomingDynamicStream(
 326                 stream_id + 2 * (session_.get_max_open_streams() - 1)));
 327 }
 328
 329 TEST_P(QuicSessionTestServer, TooManyImplicitlyOpenedStreams) {
 330   QuicStreamId stream_id1 = kClientDataStreamId1;
 331   // A stream ID which is too large to create.
 332   QuicStreamId stream_id2 = stream_id1 + 2 * session_.get_max_open_streams();
 333   EXPECT_NE(nullptr, session_.GetIncomingDynamicStream(stream_id1));
 334   EXPECT_CALL(*connection_, SendConnectionClose(QUIC_TOO_MANY_OPEN_STREAMS));
 335   EXPECT_EQ(nullptr, session_.GetIncomingDynamicStream(stream_id2));
 336 }
 337
 338 TEST_P(QuicSessionTestServer, ManyImplicitlyOpenedStreams) {
 339   // When max_open_streams_ is 200, should be able to create 200 streams
 340   // out-of-order, that is, creating the one with the largest stream ID first.
 341   QuicSessionPeer::SetMaxOpenStreams(&session_, 200);
 342   QuicStreamId stream_id = kClientDataStreamId1;
 343   // Create one stream.
 344   session_.GetIncomingDynamicStream(stream_id);
 345   EXPECT_CALL(*connection_, SendConnectionClose(_)).Times(0);
 346   // Create the largest stream ID of a threatened total of 200 streams.
 347   session_.GetIncomingDynamicStream(stream_id + 2 * (200 - 1));
 348 }
 349
 350 TEST_P(QuicSessionTestServer, DebugDFatalIfMarkingClosedStreamWriteBlocked) {
 351   TestStream* stream2 = session_.CreateOutgoingDynamicStream();
 352   QuicStreamId closed_stream_id = stream2->id();
 353   // Close the stream.
 354   EXPECT_CALL(*connection_, SendRstStream(closed_stream_id, _, _));
 355   stream2->Reset(QUIC_BAD_APPLICATION_PAYLOAD);
 356   EXPECT_DEBUG_DFATAL(session_.MarkConnectionLevelWriteBlocked(
 357                           closed_stream_id, kSomeMiddlePriority),
 358                       "Marking unknown stream 2 blocked.");
 359 }
 360
 361 TEST_P(QuicSessionTestServer,
 362        DebugDFatalIfMarkWriteBlockedCalledWithWrongPriority) {
 363   const QuicPriority kDifferentPriority = 0;
 364
 365   TestStream* stream2 = session_.CreateOutgoingDynamicStream();
 366   EXPECT_NE(kDifferentPriority, stream2->EffectivePriority());
 367   EXPECT_DEBUG_DFATAL(session_.MarkConnectionLevelWriteBlocked(
 368                           stream2->id(), kDifferentPriority),
 369                       "Priorities do not match.  Got: 0 Expected: 3");
 370 }
 371
 372 TEST_P(QuicSessionTestServer, OnCanWrite) {
 373   TestStream* stream2 = session_.CreateOutgoingDynamicStream();
 374   TestStream* stream4 = session_.CreateOutgoingDynamicStream();
 375   TestStream* stream6 = session_.CreateOutgoingDynamicStream();
 376
 377   session_.MarkConnectionLevelWriteBlocked(stream2->id(), kSomeMiddlePriority);
 378   session_.MarkConnectionLevelWriteBlocked(stream6->id(), kSomeMiddlePriority);
 379   session_.MarkConnectionLevelWriteBlocked(stream4->id(), kSomeMiddlePriority);
 380
 381   InSequence s;
 382   StreamBlocker stream2_blocker(&session_, stream2->id());
 383   // Reregister, to test the loop limit.
 384   EXPECT_CALL(*stream2, OnCanWrite())
 385       .WillOnce(Invoke(&stream2_blocker,
 386                        &StreamBlocker::MarkConnectionLevelWriteBlocked));
 387   EXPECT_CALL(*stream6, OnCanWrite());
 388   EXPECT_CALL(*stream4, OnCanWrite());
 389   session_.OnCanWrite();
 390   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 391 }
 392
 393 TEST_P(QuicSessionTestServer, OnCanWriteBundlesStreams) {
 394   // Drive congestion control manually.
 395   MockSendAlgorithm* send_algorithm = new StrictMock<MockSendAlgorithm>;
 396   QuicConnectionPeer::SetSendAlgorithm(session_.connection(), send_algorithm);
 397
 398   TestStream* stream2 = session_.CreateOutgoingDynamicStream();
 399   TestStream* stream4 = session_.CreateOutgoingDynamicStream();
 400   TestStream* stream6 = session_.CreateOutgoingDynamicStream();
 401
 402   session_.MarkConnectionLevelWriteBlocked(stream2->id(), kSomeMiddlePriority);
 403   session_.MarkConnectionLevelWriteBlocked(stream6->id(), kSomeMiddlePriority);
 404   session_.MarkConnectionLevelWriteBlocked(stream4->id(), kSomeMiddlePriority);
 405
 406   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillRepeatedly(
 407       Return(QuicTime::Delta::Zero()));
 408   EXPECT_CALL(*send_algorithm, GetCongestionWindow())
 409       .WillRepeatedly(Return(kMaxPacketSize * 10));
 410   EXPECT_CALL(*stream2, OnCanWrite())
 411       .WillOnce(testing::IgnoreResult(Invoke(CreateFunctor(
 412           &session_, &TestSession::SendStreamData, stream2->id()))));
 413   EXPECT_CALL(*stream4, OnCanWrite())
 414       .WillOnce(testing::IgnoreResult(Invoke(CreateFunctor(
 415           &session_, &TestSession::SendStreamData, stream4->id()))));
 416   EXPECT_CALL(*stream6, OnCanWrite())
 417       .WillOnce(testing::IgnoreResult(Invoke(CreateFunctor(
 418           &session_, &TestSession::SendStreamData, stream6->id()))));
 419
 420   // Expect that we only send one packet, the writes from different streams
 421   // should be bundled together.
 422   MockPacketWriter* writer =
 423       static_cast<MockPacketWriter*>(
 424           QuicConnectionPeer::GetWriter(session_.connection()));
 425   EXPECT_CALL(*writer, WritePacket(_, _, _, _)).WillOnce(
 426                   Return(WriteResult(WRITE_STATUS_OK, 0)));
 427   EXPECT_CALL(*send_algorithm, OnPacketSent(_, _, _, _, _)).Times(1);
 428   session_.OnCanWrite();
 429   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 430 }
 431
 432 TEST_P(QuicSessionTestServer, OnCanWriteCongestionControlBlocks) {
 433   InSequence s;
 434
 435   // Drive congestion control manually.
 436   MockSendAlgorithm* send_algorithm = new StrictMock<MockSendAlgorithm>;
 437   QuicConnectionPeer::SetSendAlgorithm(session_.connection(), send_algorithm);
 438
 439   TestStream* stream2 = session_.CreateOutgoingDynamicStream();
 440   TestStream* stream4 = session_.CreateOutgoingDynamicStream();
 441   TestStream* stream6 = session_.CreateOutgoingDynamicStream();
 442
 443   session_.MarkConnectionLevelWriteBlocked(stream2->id(), kSomeMiddlePriority);
 444   session_.MarkConnectionLevelWriteBlocked(stream6->id(), kSomeMiddlePriority);
 445   session_.MarkConnectionLevelWriteBlocked(stream4->id(), kSomeMiddlePriority);
 446
 447   StreamBlocker stream2_blocker(&session_, stream2->id());
 448   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 449       QuicTime::Delta::Zero()));
 450   EXPECT_CALL(*stream2, OnCanWrite());
 451   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 452       QuicTime::Delta::Zero()));
 453   EXPECT_CALL(*stream6, OnCanWrite());
 454   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 455       QuicTime::Delta::Infinite()));
 456   // stream4->OnCanWrite is not called.
 457
 458   session_.OnCanWrite();
 459   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 460
 461   // Still congestion-control blocked.
 462   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 463       QuicTime::Delta::Infinite()));
 464   session_.OnCanWrite();
 465   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 466
 467   // stream4->OnCanWrite is called once the connection stops being
 468   // congestion-control blocked.
 469   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 470       QuicTime::Delta::Zero()));
 471   EXPECT_CALL(*stream4, OnCanWrite());
 472   session_.OnCanWrite();
 473   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 474 }
 475
 476 TEST_P(QuicSessionTestServer, BufferedHandshake) {
 477   EXPECT_FALSE(session_.HasPendingHandshake());  // Default value.
 478
 479   // Test that blocking other streams does not change our status.
 480   TestStream* stream2 = session_.CreateOutgoingDynamicStream();
 481   StreamBlocker stream2_blocker(&session_, stream2->id());
 482   stream2_blocker.MarkConnectionLevelWriteBlocked();
 483   EXPECT_FALSE(session_.HasPendingHandshake());
 484
 485   TestStream* stream3 = session_.CreateOutgoingDynamicStream();
 486   StreamBlocker stream3_blocker(&session_, stream3->id());
 487   stream3_blocker.MarkConnectionLevelWriteBlocked();
 488   EXPECT_FALSE(session_.HasPendingHandshake());
 489
 490   // Blocking (due to buffering of) the Crypto stream is detected.
 491   session_.MarkConnectionLevelWriteBlocked(kCryptoStreamId, kHighestPriority);
 492   EXPECT_TRUE(session_.HasPendingHandshake());
 493
 494   TestStream* stream4 = session_.CreateOutgoingDynamicStream();
 495   StreamBlocker stream4_blocker(&session_, stream4->id());
 496   stream4_blocker.MarkConnectionLevelWriteBlocked();
 497   EXPECT_TRUE(session_.HasPendingHandshake());
 498
 499   InSequence s;
 500   // Force most streams to re-register, which is common scenario when we block
 501   // the Crypto stream, and only the crypto stream can "really" write.
 502
 503   // Due to prioritization, we *should* be asked to write the crypto stream
 504   // first.
 505   // Don't re-register the crypto stream (which signals complete writing).
 506   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 507   EXPECT_CALL(*crypto_stream, OnCanWrite());
 508
 509   // Re-register all other streams, to show they weren't able to proceed.
 510   EXPECT_CALL(*stream2, OnCanWrite())
 511       .WillOnce(Invoke(&stream2_blocker,
 512                        &StreamBlocker::MarkConnectionLevelWriteBlocked));
 513   EXPECT_CALL(*stream3, OnCanWrite())
 514       .WillOnce(Invoke(&stream3_blocker,
 515                        &StreamBlocker::MarkConnectionLevelWriteBlocked));
 516   EXPECT_CALL(*stream4, OnCanWrite())
 517       .WillOnce(Invoke(&stream4_blocker,
 518                        &StreamBlocker::MarkConnectionLevelWriteBlocked));
 519
 520   session_.OnCanWrite();
 521   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 522   EXPECT_FALSE(session_.HasPendingHandshake());  // Crypto stream wrote.
 523 }
 524
 525 TEST_P(QuicSessionTestServer, OnCanWriteWithClosedStream) {
 526   TestStream* stream2 = session_.CreateOutgoingDynamicStream();
 527   TestStream* stream4 = session_.CreateOutgoingDynamicStream();
 528   TestStream* stream6 = session_.CreateOutgoingDynamicStream();
 529
 530   session_.MarkConnectionLevelWriteBlocked(stream2->id(), kSomeMiddlePriority);
 531   session_.MarkConnectionLevelWriteBlocked(stream6->id(), kSomeMiddlePriority);
 532   session_.MarkConnectionLevelWriteBlocked(stream4->id(), kSomeMiddlePriority);
 533   CloseStream(stream6->id());
 534
 535   InSequence s;
 536   EXPECT_CALL(*stream2, OnCanWrite());
 537   EXPECT_CALL(*stream4, OnCanWrite());
 538   session_.OnCanWrite();
 539   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 540 }
 541
 542 TEST_P(QuicSessionTestServer, OnCanWriteLimitsNumWritesIfFlowControlBlocked) {
 543   // Ensure connection level flow control blockage.
 544   QuicFlowControllerPeer::SetSendWindowOffset(session_.flow_controller(), 0);
 545   EXPECT_TRUE(session_.flow_controller()->IsBlocked());
 546   EXPECT_TRUE(session_.IsConnectionFlowControlBlocked());
 547   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 548
 549   // Mark the crypto and headers streams as write blocked, we expect them to be
 550   // allowed to write later.
 551   session_.MarkConnectionLevelWriteBlocked(kCryptoStreamId, kHighestPriority);
 552   session_.MarkConnectionLevelWriteBlocked(kHeadersStreamId, kHighestPriority);
 553
 554   // Create a data stream, and although it is write blocked we never expect it
 555   // to be allowed to write as we are connection level flow control blocked.
 556   TestStream* stream = session_.CreateOutgoingDynamicStream();
 557   session_.MarkConnectionLevelWriteBlocked(stream->id(), kSomeMiddlePriority);
 558   EXPECT_CALL(*stream, OnCanWrite()).Times(0);
 559
 560   // The crypto and headers streams should be called even though we are
 561   // connection flow control blocked.
 562   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 563   EXPECT_CALL(*crypto_stream, OnCanWrite()).Times(1);
 564   TestHeadersStream* headers_stream = new TestHeadersStream(&session_);
 565   QuicSpdySessionPeer::SetHeadersStream(&session_, headers_stream);
 566   EXPECT_CALL(*headers_stream, OnCanWrite()).Times(1);
 567
 568   session_.OnCanWrite();
 569   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 570 }
 571
 572 TEST_P(QuicSessionTestServer, SendGoAway) {
 573   MockPacketWriter* writer = static_cast<MockPacketWriter*>(
 574       QuicConnectionPeer::GetWriter(session_.connection()));
 575   EXPECT_CALL(*writer, WritePacket(_, _, _, _))
 576       .WillOnce(Return(WriteResult(WRITE_STATUS_OK, 0)));
 577   EXPECT_CALL(*connection_, SendGoAway(_, _, _))
 578       .WillOnce(Invoke(connection_, &MockConnection::ReallySendGoAway));
 579   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 580   EXPECT_TRUE(session_.goaway_sent());
 581
 582   const QuicStreamId kTestStreamId = 5u;
 583   EXPECT_CALL(*connection_,
 584               SendRstStream(kTestStreamId, QUIC_STREAM_PEER_GOING_AWAY, 0))
 585       .Times(0);
 586   EXPECT_TRUE(session_.GetIncomingDynamicStream(kTestStreamId));
 587 }
 588
 589 TEST_P(QuicSessionTestServer, IncreasedTimeoutAfterCryptoHandshake) {
 590   EXPECT_EQ(kInitialIdleTimeoutSecs + 3,
 591             QuicConnectionPeer::GetNetworkTimeout(connection_).ToSeconds());
 592   CryptoHandshakeMessage msg;
 593   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 594   EXPECT_EQ(kMaximumIdleTimeoutSecs + 3,
 595             QuicConnectionPeer::GetNetworkTimeout(connection_).ToSeconds());
 596 }
 597
 598 TEST_P(QuicSessionTestServer, RstStreamBeforeHeadersDecompressed) {
 599   // Send two bytes of payload.
 600   QuicStreamFrame data1(kClientDataStreamId1, false, 0, StringPiece("HT"));
 601   session_.OnStreamFrame(data1);
 602   EXPECT_EQ(1u, session_.GetNumOpenStreams());
 603
 604   EXPECT_CALL(*connection_, SendRstStream(kClientDataStreamId1, _, _));
 605   QuicRstStreamFrame rst1(kClientDataStreamId1, QUIC_STREAM_NO_ERROR, 0);
 606   session_.OnRstStream(rst1);
 607   EXPECT_EQ(0u, session_.GetNumOpenStreams());
 608   // Connection should remain alive.
 609   EXPECT_TRUE(connection_->connected());
 610 }
 611
 612 TEST_P(QuicSessionTestServer, MultipleRstStreamsCauseSingleConnectionClose) {
 613   // If multiple invalid reset stream frames arrive in a single packet, this
 614   // should trigger a connection close. However there is no need to send
 615   // multiple connection close frames.
 616
 617   // Create valid stream.
 618   QuicStreamFrame data1(kClientDataStreamId1, false, 0, StringPiece("HT"));
 619   session_.OnStreamFrame(data1);
 620   EXPECT_EQ(1u, session_.GetNumOpenStreams());
 621
 622   // Process first invalid stream reset, resulting in the connection being
 623   // closed.
 624   EXPECT_CALL(*connection_, SendConnectionClose(QUIC_TOO_MANY_OPEN_STREAMS))
 625       .Times(1);
 626   const QuicStreamId kLargeInvalidStreamId = 99999999;
 627   QuicRstStreamFrame rst1(kLargeInvalidStreamId, QUIC_STREAM_NO_ERROR, 0);
 628   session_.OnRstStream(rst1);
 629   QuicConnectionPeer::CloseConnection(connection_);
 630
 631   // Processing of second invalid stream reset should not result in the
 632   // connection being closed for a second time.
 633   QuicRstStreamFrame rst2(kLargeInvalidStreamId, QUIC_STREAM_NO_ERROR, 0);
 634   session_.OnRstStream(rst2);
 635 }
 636
 637 TEST_P(QuicSessionTestServer, HandshakeUnblocksFlowControlBlockedStream) {
 638   // Test that if a stream is flow control blocked, then on receipt of the SHLO
 639   // containing a suitable send window offset, the stream becomes unblocked.
 640
 641   // Ensure that Writev consumes all the data it is given (simulate no socket
 642   // blocking).
 643   session_.set_writev_consumes_all_data(true);
 644
 645   // Create a stream, and send enough data to make it flow control blocked.
 646   TestStream* stream2 = session_.CreateOutgoingDynamicStream();
 647   string body(kMinimumFlowControlSendWindow, '.');
 648   EXPECT_FALSE(stream2->flow_controller()->IsBlocked());
 649   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 650   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 651   EXPECT_CALL(*connection_, SendBlocked(stream2->id()));
 652   EXPECT_CALL(*connection_, SendBlocked(0));
 653   stream2->SendBody(body, false);
 654   EXPECT_TRUE(stream2->flow_controller()->IsBlocked());
 655   EXPECT_TRUE(session_.IsConnectionFlowControlBlocked());
 656   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 657
 658   // The handshake message will call OnCanWrite, so the stream can resume
 659   // writing.
 660   EXPECT_CALL(*stream2, OnCanWrite());
 661   // Now complete the crypto handshake, resulting in an increased flow control
 662   // send window.
 663   CryptoHandshakeMessage msg;
 664   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 665
 666   // Stream is now unblocked.
 667   EXPECT_FALSE(stream2->flow_controller()->IsBlocked());
 668   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 669   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 670 }
 671
 672 TEST_P(QuicSessionTestServer, HandshakeUnblocksFlowControlBlockedCryptoStream) {
 673   // Test that if the crypto stream is flow control blocked, then if the SHLO
 674   // contains a larger send window offset, the stream becomes unblocked.
 675   session_.set_writev_consumes_all_data(true);
 676   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 677   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 678   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 679   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 680   QuicHeadersStream* headers_stream =
 681       QuicSpdySessionPeer::GetHeadersStream(&session_);
 682   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 683   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 684   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 685   // Write until the crypto stream is flow control blocked.
 686   EXPECT_CALL(*connection_, SendBlocked(kCryptoStreamId));
 687   for (QuicStreamId i = 0;
 688        !crypto_stream->flow_controller()->IsBlocked() && i < 1000u; i++) {
 689     EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 690     EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 691     QuicConfig config;
 692     CryptoHandshakeMessage crypto_message;
 693     config.ToHandshakeMessage(&crypto_message);
 694     crypto_stream->SendHandshakeMessage(crypto_message);
 695   }
 696   EXPECT_TRUE(crypto_stream->flow_controller()->IsBlocked());
 697   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 698   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 699   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 700   EXPECT_FALSE(session_.HasDataToWrite());
 701   EXPECT_TRUE(crypto_stream->HasBufferedData());
 702
 703   // The handshake message will call OnCanWrite, so the stream can
 704   // resume writing.
 705   EXPECT_CALL(*crypto_stream, OnCanWrite());
 706   // Now complete the crypto handshake, resulting in an increased flow control
 707   // send window.
 708   CryptoHandshakeMessage msg;
 709   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 710
 711   // Stream is now unblocked and will no longer have buffered data.
 712   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 713   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 714   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 715 }
 716
 717 TEST_P(QuicSessionTestServer,
 718        HandshakeUnblocksFlowControlBlockedHeadersStream) {
 719   // Test that if the header stream is flow control blocked, then if the SHLO
 720   // contains a larger send window offset, the stream becomes unblocked.
 721   session_.set_writev_consumes_all_data(true);
 722   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 723   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 724   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 725   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 726   QuicHeadersStream* headers_stream =
 727       QuicSpdySessionPeer::GetHeadersStream(&session_);
 728   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 729   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 730   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 731   QuicStreamId stream_id = 5;
 732   // Write until the header stream is flow control blocked.
 733   EXPECT_CALL(*connection_, SendBlocked(kHeadersStreamId));
 734   SpdyHeaderBlock headers;
 735   while (!headers_stream->flow_controller()->IsBlocked() && stream_id < 2000) {
 736     EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 737     EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 738     headers["header"] = base::Uint64ToString(base::RandUint64()) +
 739         base::Uint64ToString(base::RandUint64()) +
 740         base::Uint64ToString(base::RandUint64());
 741     headers_stream->WriteHeaders(stream_id, headers, true, 0, nullptr);
 742     stream_id += 2;
 743   }
 744   // Write once more to ensure that the headers stream has buffered data. The
 745   // random headers may have exactly filled the flow control window.
 746   headers_stream->WriteHeaders(stream_id, headers, true, 0, nullptr);
 747   EXPECT_TRUE(headers_stream->HasBufferedData());
 748
 749   EXPECT_TRUE(headers_stream->flow_controller()->IsBlocked());
 750   EXPECT_FALSE(crypto_stream->flow_controller()->IsBlocked());
 751   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 752   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 753   EXPECT_FALSE(session_.HasDataToWrite());
 754
 755   // Now complete the crypto handshake, resulting in an increased flow control
 756   // send window.
 757   CryptoHandshakeMessage msg;
 758   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 759
 760   // Stream is now unblocked and will no longer have buffered data.
 761   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 762   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 763   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 764   EXPECT_FALSE(headers_stream->HasBufferedData());
 765 }
 766
 767 TEST_P(QuicSessionTestServer, ConnectionFlowControlAccountingRstOutOfOrder) {
 768   // Test that when we receive an out of order stream RST we correctly adjust
 769   // our connection level flow control receive window.
 770   // On close, the stream should mark as consumed all bytes between the highest
 771   // byte consumed so far and the final byte offset from the RST frame.
 772   TestStream* stream = session_.CreateOutgoingDynamicStream();
 773
 774   const QuicStreamOffset kByteOffset =
 775       1 + kInitialSessionFlowControlWindowForTest / 2;
 776
 777   // Expect no stream WINDOW_UPDATE frames, as stream read side closed.
 778   EXPECT_CALL(*connection_, SendWindowUpdate(stream->id(), _)).Times(0);
 779   // We do expect a connection level WINDOW_UPDATE when the stream is reset.
 780   EXPECT_CALL(*connection_,
 781               SendWindowUpdate(0, kInitialSessionFlowControlWindowForTest +
 782                                       kByteOffset)).Times(1);
 783
 784   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 785   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 786                                kByteOffset);
 787   session_.OnRstStream(rst_frame);
 788   session_.PostProcessAfterData();
 789   EXPECT_EQ(kByteOffset, session_.flow_controller()->bytes_consumed());
 790 }
 791
 792 TEST_P(QuicSessionTestServer, ConnectionFlowControlAccountingFinAndLocalReset) {
 793   // Test the situation where we receive a FIN on a stream, and before we fully
 794   // consume all the data from the sequencer buffer we locally RST the stream.
 795   // The bytes between highest consumed byte, and the final byte offset that we
 796   // determined when the FIN arrived, should be marked as consumed at the
 797   // connection level flow controller when the stream is reset.
 798   TestStream* stream = session_.CreateOutgoingDynamicStream();
 799
 800   const QuicStreamOffset kByteOffset =
 801       kInitialSessionFlowControlWindowForTest / 2;
 802   QuicStreamFrame frame(stream->id(), true, kByteOffset, StringPiece());
 803   session_.OnStreamFrame(frame);
 804   session_.PostProcessAfterData();
 805   EXPECT_TRUE(connection_->connected());
 806
 807   EXPECT_EQ(0u, stream->flow_controller()->bytes_consumed());
 808   EXPECT_EQ(kByteOffset,
 809             stream->flow_controller()->highest_received_byte_offset());
 810
 811   // Reset stream locally.
 812   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 813   stream->Reset(QUIC_STREAM_CANCELLED);
 814   EXPECT_EQ(kByteOffset, session_.flow_controller()->bytes_consumed());
 815 }
 816
 817 TEST_P(QuicSessionTestServer, ConnectionFlowControlAccountingFinAfterRst) {
 818   // Test that when we RST the stream (and tear down stream state), and then
 819   // receive a FIN from the peer, we correctly adjust our connection level flow
 820   // control receive window.
 821
 822   // Connection starts with some non-zero highest received byte offset,
 823   // due to other active streams.
 824   const uint64 kInitialConnectionBytesConsumed = 567;
 825   const uint64 kInitialConnectionHighestReceivedOffset = 1234;
 826   EXPECT_LT(kInitialConnectionBytesConsumed,
 827             kInitialConnectionHighestReceivedOffset);
 828   session_.flow_controller()->UpdateHighestReceivedOffset(
 829       kInitialConnectionHighestReceivedOffset);
 830   session_.flow_controller()->AddBytesConsumed(kInitialConnectionBytesConsumed);
 831
 832   // Reset our stream: this results in the stream being closed locally.
 833   TestStream* stream = session_.CreateOutgoingDynamicStream();
 834   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 835   stream->Reset(QUIC_STREAM_CANCELLED);
 836
 837   // Now receive a response from the peer with a FIN. We should handle this by
 838   // adjusting the connection level flow control receive window to take into
 839   // account the total number of bytes sent by the peer.
 840   const QuicStreamOffset kByteOffset = 5678;
 841   string body = "hello";
 842   QuicStreamFrame frame(stream->id(), true, kByteOffset, StringPiece(body));
 843   session_.OnStreamFrame(frame);
 844
 845   QuicStreamOffset total_stream_bytes_sent_by_peer =
 846       kByteOffset + body.length();
 847   EXPECT_EQ(kInitialConnectionBytesConsumed + total_stream_bytes_sent_by_peer,
 848             session_.flow_controller()->bytes_consumed());
 849   EXPECT_EQ(
 850       kInitialConnectionHighestReceivedOffset + total_stream_bytes_sent_by_peer,
 851       session_.flow_controller()->highest_received_byte_offset());
 852 }
 853
 854 TEST_P(QuicSessionTestServer, ConnectionFlowControlAccountingRstAfterRst) {
 855   // Test that when we RST the stream (and tear down stream state), and then
 856   // receive a RST from the peer, we correctly adjust our connection level flow
 857   // control receive window.
 858
 859   // Connection starts with some non-zero highest received byte offset,
 860   // due to other active streams.
 861   const uint64 kInitialConnectionBytesConsumed = 567;
 862   const uint64 kInitialConnectionHighestReceivedOffset = 1234;
 863   EXPECT_LT(kInitialConnectionBytesConsumed,
 864             kInitialConnectionHighestReceivedOffset);
 865   session_.flow_controller()->UpdateHighestReceivedOffset(
 866       kInitialConnectionHighestReceivedOffset);
 867   session_.flow_controller()->AddBytesConsumed(kInitialConnectionBytesConsumed);
 868
 869   // Reset our stream: this results in the stream being closed locally.
 870   TestStream* stream = session_.CreateOutgoingDynamicStream();
 871   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 872   stream->Reset(QUIC_STREAM_CANCELLED);
 873
 874   // Now receive a RST from the peer. We should handle this by adjusting the
 875   // connection level flow control receive window to take into account the total
 876   // number of bytes sent by the peer.
 877   const QuicStreamOffset kByteOffset = 5678;
 878   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 879                                kByteOffset);
 880   session_.OnRstStream(rst_frame);
 881
 882   EXPECT_EQ(kInitialConnectionBytesConsumed + kByteOffset,
 883             session_.flow_controller()->bytes_consumed());
 884   EXPECT_EQ(kInitialConnectionHighestReceivedOffset + kByteOffset,
 885             session_.flow_controller()->highest_received_byte_offset());
 886 }
 887
 888 TEST_P(QuicSessionTestServer, InvalidStreamFlowControlWindowInHandshake) {
 889   // Test that receipt of an invalid (< default) stream flow control window from
 890   // the peer results in the connection being torn down.
 891   const uint32 kInvalidWindow = kMinimumFlowControlSendWindow - 1;
 892   QuicConfigPeer::SetReceivedInitialStreamFlowControlWindow(session_.config(),
 893                                                             kInvalidWindow);
 894
 895   EXPECT_CALL(*connection_,
 896               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW));
 897   session_.OnConfigNegotiated();
 898 }
 899
 900 TEST_P(QuicSessionTestServer, InvalidSessionFlowControlWindowInHandshake) {
 901   // Test that receipt of an invalid (< default) session flow control window
 902   // from the peer results in the connection being torn down.
 903   const uint32 kInvalidWindow = kMinimumFlowControlSendWindow - 1;
 904   QuicConfigPeer::SetReceivedInitialSessionFlowControlWindow(session_.config(),
 905                                                              kInvalidWindow);
 906
 907   EXPECT_CALL(*connection_,
 908               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW));
 909   session_.OnConfigNegotiated();
 910 }
 911
 912 TEST_P(QuicSessionTestServer, FlowControlWithInvalidFinalOffset) {
 913   // Test that if we receive a stream RST with a highest byte offset that
 914   // violates flow control, that we close the connection.
 915   const uint64 kLargeOffset = kInitialSessionFlowControlWindowForTest + 1;
 916   EXPECT_CALL(*connection_,
 917               SendConnectionClose(QUIC_FLOW_CONTROL_RECEIVED_TOO_MUCH_DATA))
 918       .Times(2);
 919
 920   // Check that stream frame + FIN results in connection close.
 921   TestStream* stream = session_.CreateOutgoingDynamicStream();
 922   EXPECT_CALL(*connection_, SendRstStream(stream->id(), _, _));
 923   stream->Reset(QUIC_STREAM_CANCELLED);
 924   QuicStreamFrame frame(stream->id(), true, kLargeOffset, StringPiece());
 925   session_.OnStreamFrame(frame);
 926
 927   // Check that RST results in connection close.
 928   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 929                                kLargeOffset);
 930   session_.OnRstStream(rst_frame);
 931 }
 932
 933 TEST_P(QuicSessionTestServer, WindowUpdateUnblocksHeadersStream) {
 934   // Test that a flow control blocked headers stream gets unblocked on recipt of
 935   // a WINDOW_UPDATE frame.
 936
 937   // Set the headers stream to be flow control blocked.
 938   QuicHeadersStream* headers_stream =
 939       QuicSpdySessionPeer::GetHeadersStream(&session_);
 940   QuicFlowControllerPeer::SetSendWindowOffset(headers_stream->flow_controller(),
 941                                               0);
 942   EXPECT_TRUE(headers_stream->flow_controller()->IsBlocked());
 943   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 944   EXPECT_TRUE(session_.IsStreamFlowControlBlocked());
 945
 946   // Unblock the headers stream by supplying a WINDOW_UPDATE.
 947   QuicWindowUpdateFrame window_update_frame(headers_stream->id(),
 948                                             2 * kMinimumFlowControlSendWindow);
 949   session_.OnWindowUpdateFrame(window_update_frame);
 950   EXPECT_FALSE(headers_stream->flow_controller()->IsBlocked());
 951   EXPECT_FALSE(session_.IsConnectionFlowControlBlocked());
 952   EXPECT_FALSE(session_.IsStreamFlowControlBlocked());
 953 }
 954
 955 TEST_P(QuicSessionTestServer, TooManyUnfinishedStreamsCauseConnectionClose) {
 956   // If a buggy/malicious peer creates too many streams that are not ended with
 957   // a FIN or RST then we send a connection close.
 958   EXPECT_CALL(*connection_,
 959               SendConnectionClose(QUIC_TOO_MANY_UNFINISHED_STREAMS)).Times(1);
 960
 961   const QuicStreamId kMaxStreams = 5;
 962   QuicSessionPeer::SetMaxOpenStreams(&session_, kMaxStreams);
 963
 964   // Create kMaxStreams + 1 data streams, and close them all without receiving a
 965   // FIN or a RST_STREAM from the client.
 966   const QuicStreamId kFirstStreamId = kClientDataStreamId1;
 967   const QuicStreamId kFinalStreamId =
 968       kClientDataStreamId1 + 2 * kMaxStreams + 1;
 969   for (QuicStreamId i = kFirstStreamId; i < kFinalStreamId; i += 2) {
 970     QuicStreamFrame data1(i, false, 0, StringPiece("HT"));
 971     session_.OnStreamFrame(data1);
 972     EXPECT_EQ(1u, session_.GetNumOpenStreams());
 973     EXPECT_CALL(*connection_, SendRstStream(i, _, _));
 974     session_.CloseStream(i);
 975   }
 976
 977   // Called after any new data is received by the session, and triggers the call
 978   // to close the connection.
 979   session_.PostProcessAfterData();
 980 }
 981
 982 TEST_P(QuicSessionTestServer, DrainingStreamsDoNotCountAsOpened) {
 983   // Verify that a draining stream (which has received a FIN but not consumed
 984   // it) does not count against the open quota (because it is closed from the
 985   // protocol point of view).
 986   EXPECT_CALL(*connection_,
 987               SendConnectionClose(QUIC_TOO_MANY_UNFINISHED_STREAMS)).Times(0);
 988
 989   const QuicStreamId kMaxStreams = 5;
 990   QuicSessionPeer::SetMaxOpenStreams(&session_, kMaxStreams);
 991
 992   // Create kMaxStreams + 1 data streams, and mark them draining.
 993   const QuicStreamId kFirstStreamId = kClientDataStreamId1;
 994   const QuicStreamId kFinalStreamId =
 995       kClientDataStreamId1 + 2 * kMaxStreams + 1;
 996   for (QuicStreamId i = kFirstStreamId; i < kFinalStreamId; i += 2) {
 997     QuicStreamFrame data1(i, true, 0, StringPiece("HT"));
 998     session_.OnStreamFrame(data1);
 999     EXPECT_EQ(1u, session_.GetNumOpenStreams());
1000     session_.StreamDraining(i);
1001     EXPECT_EQ(0u, session_.GetNumOpenStreams());
1002   }
1003
1004   // Called after any new data is received by the session, and triggers the call
1005   // to close the connection.
1006   session_.PostProcessAfterData();
1007 }
1008
1009 class QuicSessionTestClient : public QuicSessionTestBase {
1010  protected:
1011   QuicSessionTestClient() : QuicSessionTestBase(Perspective::IS_CLIENT) {}
1012 };
1013
1014 INSTANTIATE_TEST_CASE_P(Tests,
1015                         QuicSessionTestClient,
1016                         ::testing::ValuesIn(QuicSupportedVersions()));
1017
1018 TEST_P(QuicSessionTestClient, ImplicitlyCreatedStreamsClient) {
1019   ASSERT_TRUE(session_.GetIncomingDynamicStream(6) != nullptr);
1020   // Both 2 and 4 should be implicitly created.
1021   EXPECT_TRUE(QuicSessionPeer::IsStreamImplicitlyCreated(&session_, 2));
1022   EXPECT_TRUE(QuicSessionPeer::IsStreamImplicitlyCreated(&session_, 4));
1023   ASSERT_TRUE(session_.GetIncomingDynamicStream(2) != nullptr);
1024   ASSERT_TRUE(session_.GetIncomingDynamicStream(4) != nullptr);
1025   // And 5 should be not implicitly created.
1026   EXPECT_FALSE(QuicSessionPeer::IsStreamImplicitlyCreated(&session_, 5));
1027 }
1028
1029 }  // namespace
1030 }  // namespace test
1031 }  // namespace net