net/quic/quic_session_test.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "net/quic/quic_session.h"
   6
   7 #include <set>
   8 #include <vector>
   9
  10 #include "base/basictypes.h"
  11 #include "base/containers/hash_tables.h"
  12 #include "net/quic/crypto/crypto_protocol.h"
  13 #include "net/quic/quic_crypto_stream.h"
  14 #include "net/quic/quic_flags.h"
  15 #include "net/quic/quic_protocol.h"
  16 #include "net/quic/quic_utils.h"
  17 #include "net/quic/reliable_quic_stream.h"
  18 #include "net/quic/test_tools/quic_config_peer.h"
  19 #include "net/quic/test_tools/quic_connection_peer.h"
  20 #include "net/quic/test_tools/quic_data_stream_peer.h"
  21 #include "net/quic/test_tools/quic_flow_controller_peer.h"
  22 #include "net/quic/test_tools/quic_session_peer.h"
  23 #include "net/quic/test_tools/quic_test_utils.h"
  24 #include "net/quic/test_tools/reliable_quic_stream_peer.h"
  25 #include "net/spdy/spdy_framer.h"
  26 #include "net/test/gtest_util.h"
  27 #include "testing/gmock/include/gmock/gmock.h"
  28 #include "testing/gmock_mutant.h"
  29 #include "testing/gtest/include/gtest/gtest.h"
  30
  31 using base::hash_map;
  32 using std::set;
  33 using std::vector;
  34 using testing::CreateFunctor;
  35 using testing::InSequence;
  36 using testing::Invoke;
  37 using testing::Return;
  38 using testing::StrictMock;
  39 using testing::_;
  40
  41 namespace net {
  42 namespace test {
  43 namespace {
  44
  45 const QuicPriority kHighestPriority = 0;
  46 const QuicPriority kSomeMiddlePriority = 3;
  47
  48 class TestCryptoStream : public QuicCryptoStream {
  49  public:
  50   explicit TestCryptoStream(QuicSession* session)
  51       : QuicCryptoStream(session) {
  52   }
  53
  54   virtual void OnHandshakeMessage(
  55       const CryptoHandshakeMessage& message) OVERRIDE {
  56     encryption_established_ = true;
  57     handshake_confirmed_ = true;
  58     CryptoHandshakeMessage msg;
  59     string error_details;
  60     session()->config()->SetInitialFlowControlWindowToSend(
  61         kInitialSessionFlowControlWindowForTest);
  62     session()->config()->SetInitialStreamFlowControlWindowToSend(
  63         kInitialStreamFlowControlWindowForTest);
  64     session()->config()->SetInitialSessionFlowControlWindowToSend(
  65         kInitialSessionFlowControlWindowForTest);
  66     session()->config()->ToHandshakeMessage(&msg);
  67     const QuicErrorCode error = session()->config()->ProcessPeerHello(
  68         msg, CLIENT, &error_details);
  69     EXPECT_EQ(QUIC_NO_ERROR, error);
  70     session()->OnConfigNegotiated();
  71     session()->OnCryptoHandshakeEvent(QuicSession::HANDSHAKE_CONFIRMED);
  72   }
  73
  74   MOCK_METHOD0(OnCanWrite, void());
  75 };
  76
  77 class TestHeadersStream : public QuicHeadersStream {
  78  public:
  79   explicit TestHeadersStream(QuicSession* session)
  80       : QuicHeadersStream(session) {
  81   }
  82
  83   MOCK_METHOD0(OnCanWrite, void());
  84 };
  85
  86 class TestStream : public QuicDataStream {
  87  public:
  88   TestStream(QuicStreamId id, QuicSession* session)
  89       : QuicDataStream(id, session) {
  90   }
  91
  92   using ReliableQuicStream::CloseWriteSide;
  93
  94   virtual uint32 ProcessData(const char* data, uint32 data_len) OVERRIDE {
  95     return data_len;
  96   }
  97
  98   void SendBody(const string& data, bool fin) {
  99     WriteOrBufferData(data, fin, NULL);
 100   }
 101
 102   MOCK_METHOD0(OnCanWrite, void());
 103 };
 104
 105 // Poor man's functor for use as callback in a mock.
 106 class StreamBlocker {
 107  public:
 108   StreamBlocker(QuicSession* session, QuicStreamId stream_id)
 109       : session_(session),
 110         stream_id_(stream_id) {
 111   }
 112
 113   void MarkWriteBlocked() {
 114     session_->MarkWriteBlocked(stream_id_, kSomeMiddlePriority);
 115   }
 116
 117  private:
 118   QuicSession* const session_;
 119   const QuicStreamId stream_id_;
 120 };
 121
 122 class TestSession : public QuicSession {
 123  public:
 124   explicit TestSession(QuicConnection* connection)
 125       : QuicSession(connection,
 126                     DefaultQuicConfig()),
 127         crypto_stream_(this),
 128         writev_consumes_all_data_(false) {
 129     InitializeSession();
 130   }
 131
 132   virtual TestCryptoStream* GetCryptoStream() OVERRIDE {
 133     return &crypto_stream_;
 134   }
 135
 136   virtual TestStream* CreateOutgoingDataStream() OVERRIDE {
 137     TestStream* stream = new TestStream(GetNextStreamId(), this);
 138     ActivateStream(stream);
 139     return stream;
 140   }
 141
 142   virtual TestStream* CreateIncomingDataStream(QuicStreamId id) OVERRIDE {
 143     return new TestStream(id, this);
 144   }
 145
 146   bool IsClosedStream(QuicStreamId id) {
 147     return QuicSession::IsClosedStream(id);
 148   }
 149
 150   QuicDataStream* GetIncomingDataStream(QuicStreamId stream_id) {
 151     return QuicSession::GetIncomingDataStream(stream_id);
 152   }
 153
 154   virtual QuicConsumedData WritevData(
 155       QuicStreamId id,
 156       const IOVector& data,
 157       QuicStreamOffset offset,
 158       bool fin,
 159       FecProtection fec_protection,
 160       QuicAckNotifier::DelegateInterface* ack_notifier_delegate) OVERRIDE {
 161     // Always consumes everything.
 162     if (writev_consumes_all_data_) {
 163       return QuicConsumedData(data.TotalBufferSize(), fin);
 164     } else {
 165       return QuicSession::WritevData(id, data, offset, fin, fec_protection,
 166                                      ack_notifier_delegate);
 167     }
 168   }
 169
 170   void set_writev_consumes_all_data(bool val) {
 171     writev_consumes_all_data_ = val;
 172   }
 173
 174   QuicConsumedData SendStreamData(QuicStreamId id) {
 175     return WritevData(id, IOVector(), 0, true, MAY_FEC_PROTECT, NULL);
 176   }
 177
 178   using QuicSession::PostProcessAfterData;
 179
 180  private:
 181   StrictMock<TestCryptoStream> crypto_stream_;
 182
 183   bool writev_consumes_all_data_;
 184 };
 185
 186 class QuicSessionTest : public ::testing::TestWithParam<QuicVersion> {
 187  protected:
 188   QuicSessionTest()
 189       : connection_(new MockConnection(true, SupportedVersions(GetParam()))),
 190         session_(connection_) {
 191     session_.config()->SetInitialFlowControlWindowToSend(
 192         kInitialSessionFlowControlWindowForTest);
 193     session_.config()->SetInitialStreamFlowControlWindowToSend(
 194         kInitialStreamFlowControlWindowForTest);
 195     session_.config()->SetInitialSessionFlowControlWindowToSend(
 196         kInitialSessionFlowControlWindowForTest);
 197     headers_[":host"] = "www.google.com";
 198     headers_[":path"] = "/index.hml";
 199     headers_[":scheme"] = "http";
 200     headers_["cookie"] =
 201         "__utma=208381060.1228362404.1372200928.1372200928.1372200928.1; "
 202         "__utmc=160408618; "
 203         "GX=DQAAAOEAAACWJYdewdE9rIrW6qw3PtVi2-d729qaa-74KqOsM1NVQblK4VhX"
 204         "hoALMsy6HOdDad2Sz0flUByv7etmo3mLMidGrBoljqO9hSVA40SLqpG_iuKKSHX"
 205         "RW3Np4bq0F0SDGDNsW0DSmTS9ufMRrlpARJDS7qAI6M3bghqJp4eABKZiRqebHT"
 206         "pMU-RXvTI5D5oCF1vYxYofH_l1Kviuiy3oQ1kS1enqWgbhJ2t61_SNdv-1XJIS0"
 207         "O3YeHLmVCs62O6zp89QwakfAWK9d3IDQvVSJzCQsvxvNIvaZFa567MawWlXg0Rh"
 208         "1zFMi5vzcns38-8_Sns; "
 209         "GA=v*2%2Fmem*57968640*47239936%2Fmem*57968640*47114716%2Fno-nm-"
 210         "yj*15%2Fno-cc-yj*5%2Fpc-ch*133685%2Fpc-s-cr*133947%2Fpc-s-t*1339"
 211         "47%2Fno-nm-yj*4%2Fno-cc-yj*1%2Fceft-as*1%2Fceft-nqas*0%2Fad-ra-c"
 212         "v_p%2Fad-nr-cv_p-f*1%2Fad-v-cv_p*859%2Fad-ns-cv_p-f*1%2Ffn-v-ad%"
 213         "2Fpc-t*250%2Fpc-cm*461%2Fpc-s-cr*722%2Fpc-s-t*722%2Fau_p*4"
 214         "SICAID=AJKiYcHdKgxum7KMXG0ei2t1-W4OD1uW-ecNsCqC0wDuAXiDGIcT_HA2o1"
 215         "3Rs1UKCuBAF9g8rWNOFbxt8PSNSHFuIhOo2t6bJAVpCsMU5Laa6lewuTMYI8MzdQP"
 216         "ARHKyW-koxuhMZHUnGBJAM1gJODe0cATO_KGoX4pbbFxxJ5IicRxOrWK_5rU3cdy6"
 217         "edlR9FsEdH6iujMcHkbE5l18ehJDwTWmBKBzVD87naobhMMrF6VvnDGxQVGp9Ir_b"
 218         "Rgj3RWUoPumQVCxtSOBdX0GlJOEcDTNCzQIm9BSfetog_eP_TfYubKudt5eMsXmN6"
 219         "QnyXHeGeK2UINUzJ-D30AFcpqYgH9_1BvYSpi7fc7_ydBU8TaD8ZRxvtnzXqj0RfG"
 220         "tuHghmv3aD-uzSYJ75XDdzKdizZ86IG6Fbn1XFhYZM-fbHhm3mVEXnyRW4ZuNOLFk"
 221         "Fas6LMcVC6Q8QLlHYbXBpdNFuGbuZGUnav5C-2I_-46lL0NGg3GewxGKGHvHEfoyn"
 222         "EFFlEYHsBQ98rXImL8ySDycdLEFvBPdtctPmWCfTxwmoSMLHU2SCVDhbqMWU5b0yr"
 223         "JBCScs_ejbKaqBDoB7ZGxTvqlrB__2ZmnHHjCr8RgMRtKNtIeuZAo ";
 224   }
 225
 226   void CheckClosedStreams() {
 227     for (int i = kCryptoStreamId; i < 100; i++) {
 228       if (closed_streams_.count(i) == 0) {
 229         EXPECT_FALSE(session_.IsClosedStream(i)) << " stream id: " << i;
 230       } else {
 231         EXPECT_TRUE(session_.IsClosedStream(i)) << " stream id: " << i;
 232       }
 233     }
 234   }
 235
 236   void CloseStream(QuicStreamId id) {
 237     session_.CloseStream(id);
 238     closed_streams_.insert(id);
 239   }
 240
 241   QuicVersion version() const { return connection_->version(); }
 242
 243   MockConnection* connection_;
 244   TestSession session_;
 245   set<QuicStreamId> closed_streams_;
 246   SpdyHeaderBlock headers_;
 247 };
 248
 249 INSTANTIATE_TEST_CASE_P(Tests, QuicSessionTest,
 250                         ::testing::ValuesIn(QuicSupportedVersions()));
 251
 252 TEST_P(QuicSessionTest, PeerAddress) {
 253   EXPECT_EQ(IPEndPoint(Loopback4(), kTestPort), session_.peer_address());
 254 }
 255
 256 TEST_P(QuicSessionTest, IsCryptoHandshakeConfirmed) {
 257   EXPECT_FALSE(session_.IsCryptoHandshakeConfirmed());
 258   CryptoHandshakeMessage message;
 259   session_.GetCryptoStream()->OnHandshakeMessage(message);
 260   EXPECT_TRUE(session_.IsCryptoHandshakeConfirmed());
 261 }
 262
 263 TEST_P(QuicSessionTest, IsClosedStreamDefault) {
 264   // Ensure that no streams are initially closed.
 265   for (int i = kCryptoStreamId; i < 100; i++) {
 266     EXPECT_FALSE(session_.IsClosedStream(i)) << "stream id: " << i;
 267   }
 268 }
 269
 270 TEST_P(QuicSessionTest, ImplicitlyCreatedStreams) {
 271   ASSERT_TRUE(session_.GetIncomingDataStream(7) != NULL);
 272   // Both 3 and 5 should be implicitly created.
 273   EXPECT_FALSE(session_.IsClosedStream(3));
 274   EXPECT_FALSE(session_.IsClosedStream(5));
 275   ASSERT_TRUE(session_.GetIncomingDataStream(5) != NULL);
 276   ASSERT_TRUE(session_.GetIncomingDataStream(3) != NULL);
 277 }
 278
 279 TEST_P(QuicSessionTest, IsClosedStreamLocallyCreated) {
 280   TestStream* stream2 = session_.CreateOutgoingDataStream();
 281   EXPECT_EQ(2u, stream2->id());
 282   TestStream* stream4 = session_.CreateOutgoingDataStream();
 283   EXPECT_EQ(4u, stream4->id());
 284
 285   CheckClosedStreams();
 286   CloseStream(4);
 287   CheckClosedStreams();
 288   CloseStream(2);
 289   CheckClosedStreams();
 290 }
 291
 292 TEST_P(QuicSessionTest, IsClosedStreamPeerCreated) {
 293   QuicStreamId stream_id1 = kClientDataStreamId1;
 294   QuicStreamId stream_id2 = kClientDataStreamId2;
 295   QuicDataStream* stream1 = session_.GetIncomingDataStream(stream_id1);
 296   QuicDataStreamPeer::SetHeadersDecompressed(stream1, true);
 297   QuicDataStream* stream2 = session_.GetIncomingDataStream(stream_id2);
 298   QuicDataStreamPeer::SetHeadersDecompressed(stream2, true);
 299
 300   CheckClosedStreams();
 301   CloseStream(stream_id1);
 302   CheckClosedStreams();
 303   CloseStream(stream_id2);
 304   // Create a stream explicitly, and another implicitly.
 305   QuicDataStream* stream3 = session_.GetIncomingDataStream(stream_id2 + 4);
 306   QuicDataStreamPeer::SetHeadersDecompressed(stream3, true);
 307   CheckClosedStreams();
 308   // Close one, but make sure the other is still not closed
 309   CloseStream(stream3->id());
 310   CheckClosedStreams();
 311 }
 312
 313 TEST_P(QuicSessionTest, StreamIdTooLarge) {
 314   QuicStreamId stream_id = kClientDataStreamId1;
 315   session_.GetIncomingDataStream(stream_id);
 316   EXPECT_CALL(*connection_, SendConnectionClose(QUIC_INVALID_STREAM_ID));
 317   session_.GetIncomingDataStream(stream_id + kMaxStreamIdDelta + 2);
 318 }
 319
 320 TEST_P(QuicSessionTest, DecompressionError) {
 321   QuicHeadersStream* stream = QuicSessionPeer::GetHeadersStream(&session_);
 322   const unsigned char data[] = {
 323     0x80, 0x03, 0x00, 0x01,  // SPDY/3 SYN_STREAM frame
 324     0x00, 0x00, 0x00, 0x25,  // flags/length
 325     0x00, 0x00, 0x00, 0x05,  // stream id
 326     0x00, 0x00, 0x00, 0x00,  // associated stream id
 327     0x00, 0x00,
 328     'a',  'b',  'c',  'd'    // invalid compressed data
 329   };
 330   EXPECT_CALL(*connection_,
 331               SendConnectionCloseWithDetails(QUIC_INVALID_HEADERS_STREAM_DATA,
 332                                              "SPDY framing error."));
 333   stream->ProcessRawData(reinterpret_cast<const char*>(data),
 334                          arraysize(data));
 335 }
 336
 337 TEST_P(QuicSessionTest, DebugDFatalIfMarkingClosedStreamWriteBlocked) {
 338   TestStream* stream2 = session_.CreateOutgoingDataStream();
 339   // Close the stream.
 340   stream2->Reset(QUIC_BAD_APPLICATION_PAYLOAD);
 341   // TODO(rtenneti): enable when chromium supports EXPECT_DEBUG_DFATAL.
 342   /*
 343   QuicStreamId kClosedStreamId = stream2->id();
 344   EXPECT_DEBUG_DFATAL(
 345       session_.MarkWriteBlocked(kClosedStreamId, kSomeMiddlePriority),
 346       "Marking unknown stream 2 blocked.");
 347   */
 348 }
 349
 350 TEST_P(QuicSessionTest, DebugDFatalIfMarkWriteBlockedCalledWithWrongPriority) {
 351   const QuicPriority kDifferentPriority = 0;
 352
 353   TestStream* stream2 = session_.CreateOutgoingDataStream();
 354   EXPECT_NE(kDifferentPriority, stream2->EffectivePriority());
 355   // TODO(rtenneti): enable when chromium supports EXPECT_DEBUG_DFATAL.
 356   /*
 357   EXPECT_DEBUG_DFATAL(
 358       session_.MarkWriteBlocked(stream2->id(), kDifferentPriority),
 359       "Priorities do not match.  Got: 0 Expected: 3");
 360   */
 361 }
 362
 363 TEST_P(QuicSessionTest, OnCanWrite) {
 364   TestStream* stream2 = session_.CreateOutgoingDataStream();
 365   TestStream* stream4 = session_.CreateOutgoingDataStream();
 366   TestStream* stream6 = session_.CreateOutgoingDataStream();
 367
 368   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 369   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 370   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 371
 372   InSequence s;
 373   StreamBlocker stream2_blocker(&session_, stream2->id());
 374   // Reregister, to test the loop limit.
 375   EXPECT_CALL(*stream2, OnCanWrite())
 376       .WillOnce(Invoke(&stream2_blocker, &StreamBlocker::MarkWriteBlocked));
 377   EXPECT_CALL(*stream6, OnCanWrite());
 378   EXPECT_CALL(*stream4, OnCanWrite());
 379   session_.OnCanWrite();
 380   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 381 }
 382
 383 TEST_P(QuicSessionTest, OnCanWriteBundlesStreams) {
 384   // Drive congestion control manually.
 385   MockSendAlgorithm* send_algorithm = new StrictMock<MockSendAlgorithm>;
 386   QuicConnectionPeer::SetSendAlgorithm(session_.connection(), send_algorithm);
 387
 388   TestStream* stream2 = session_.CreateOutgoingDataStream();
 389   TestStream* stream4 = session_.CreateOutgoingDataStream();
 390   TestStream* stream6 = session_.CreateOutgoingDataStream();
 391
 392   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 393   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 394   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 395
 396   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillRepeatedly(
 397       Return(QuicTime::Delta::Zero()));
 398   EXPECT_CALL(*send_algorithm, GetCongestionWindow())
 399       .WillOnce(Return(kMaxPacketSize * 10));
 400   EXPECT_CALL(*stream2, OnCanWrite())
 401       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 402           &session_, &TestSession::SendStreamData, stream2->id()))));
 403   EXPECT_CALL(*stream4, OnCanWrite())
 404       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 405           &session_, &TestSession::SendStreamData, stream4->id()))));
 406   EXPECT_CALL(*stream6, OnCanWrite())
 407       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 408           &session_, &TestSession::SendStreamData, stream6->id()))));
 409
 410   // Expect that we only send one packet, the writes from different streams
 411   // should be bundled together.
 412   MockPacketWriter* writer =
 413       static_cast<MockPacketWriter*>(
 414           QuicConnectionPeer::GetWriter(session_.connection()));
 415   EXPECT_CALL(*writer, WritePacket(_, _, _, _)).WillOnce(
 416                   Return(WriteResult(WRITE_STATUS_OK, 0)));
 417   EXPECT_CALL(*send_algorithm, OnPacketSent(_, _, _, _, _)).Times(1);
 418   session_.OnCanWrite();
 419   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 420 }
 421
 422 TEST_P(QuicSessionTest, OnCanWriteCongestionControlBlocks) {
 423   InSequence s;
 424
 425   // Drive congestion control manually.
 426   MockSendAlgorithm* send_algorithm = new StrictMock<MockSendAlgorithm>;
 427   QuicConnectionPeer::SetSendAlgorithm(session_.connection(), send_algorithm);
 428
 429   TestStream* stream2 = session_.CreateOutgoingDataStream();
 430   TestStream* stream4 = session_.CreateOutgoingDataStream();
 431   TestStream* stream6 = session_.CreateOutgoingDataStream();
 432
 433   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 434   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 435   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 436
 437   StreamBlocker stream2_blocker(&session_, stream2->id());
 438   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 439       QuicTime::Delta::Zero()));
 440   EXPECT_CALL(*stream2, OnCanWrite());
 441   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 442       QuicTime::Delta::Zero()));
 443   EXPECT_CALL(*stream6, OnCanWrite());
 444   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 445       QuicTime::Delta::Infinite()));
 446   // stream4->OnCanWrite is not called.
 447
 448   session_.OnCanWrite();
 449   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 450
 451   // Still congestion-control blocked.
 452   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 453       QuicTime::Delta::Infinite()));
 454   session_.OnCanWrite();
 455   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 456
 457   // stream4->OnCanWrite is called once the connection stops being
 458   // congestion-control blocked.
 459   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 460       QuicTime::Delta::Zero()));
 461   EXPECT_CALL(*stream4, OnCanWrite());
 462   session_.OnCanWrite();
 463   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 464 }
 465
 466 TEST_P(QuicSessionTest, BufferedHandshake) {
 467   EXPECT_FALSE(session_.HasPendingHandshake());  // Default value.
 468
 469   // Test that blocking other streams does not change our status.
 470   TestStream* stream2 = session_.CreateOutgoingDataStream();
 471   StreamBlocker stream2_blocker(&session_, stream2->id());
 472   stream2_blocker.MarkWriteBlocked();
 473   EXPECT_FALSE(session_.HasPendingHandshake());
 474
 475   TestStream* stream3 = session_.CreateOutgoingDataStream();
 476   StreamBlocker stream3_blocker(&session_, stream3->id());
 477   stream3_blocker.MarkWriteBlocked();
 478   EXPECT_FALSE(session_.HasPendingHandshake());
 479
 480   // Blocking (due to buffering of) the Crypto stream is detected.
 481   session_.MarkWriteBlocked(kCryptoStreamId, kHighestPriority);
 482   EXPECT_TRUE(session_.HasPendingHandshake());
 483
 484   TestStream* stream4 = session_.CreateOutgoingDataStream();
 485   StreamBlocker stream4_blocker(&session_, stream4->id());
 486   stream4_blocker.MarkWriteBlocked();
 487   EXPECT_TRUE(session_.HasPendingHandshake());
 488
 489   InSequence s;
 490   // Force most streams to re-register, which is common scenario when we block
 491   // the Crypto stream, and only the crypto stream can "really" write.
 492
 493   // Due to prioritization, we *should* be asked to write the crypto stream
 494   // first.
 495   // Don't re-register the crypto stream (which signals complete writing).
 496   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 497   EXPECT_CALL(*crypto_stream, OnCanWrite());
 498
 499   // Re-register all other streams, to show they weren't able to proceed.
 500   EXPECT_CALL(*stream2, OnCanWrite())
 501       .WillOnce(Invoke(&stream2_blocker, &StreamBlocker::MarkWriteBlocked));
 502   EXPECT_CALL(*stream3, OnCanWrite())
 503       .WillOnce(Invoke(&stream3_blocker, &StreamBlocker::MarkWriteBlocked));
 504   EXPECT_CALL(*stream4, OnCanWrite())
 505       .WillOnce(Invoke(&stream4_blocker, &StreamBlocker::MarkWriteBlocked));
 506
 507   session_.OnCanWrite();
 508   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 509   EXPECT_FALSE(session_.HasPendingHandshake());  // Crypto stream wrote.
 510 }
 511
 512 TEST_P(QuicSessionTest, OnCanWriteWithClosedStream) {
 513   TestStream* stream2 = session_.CreateOutgoingDataStream();
 514   TestStream* stream4 = session_.CreateOutgoingDataStream();
 515   TestStream* stream6 = session_.CreateOutgoingDataStream();
 516
 517   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 518   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 519   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 520   CloseStream(stream6->id());
 521
 522   InSequence s;
 523   EXPECT_CALL(*stream2, OnCanWrite());
 524   EXPECT_CALL(*stream4, OnCanWrite());
 525   session_.OnCanWrite();
 526   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 527 }
 528
 529 TEST_P(QuicSessionTest, OnCanWriteLimitsNumWritesIfFlowControlBlocked) {
 530   if (version() < QUIC_VERSION_19) {
 531     return;
 532   }
 533
 534   // Ensure connection level flow control blockage.
 535   QuicFlowControllerPeer::SetSendWindowOffset(session_.flow_controller(), 0);
 536   EXPECT_TRUE(session_.flow_controller()->IsBlocked());
 537
 538   // Mark the crypto and headers streams as write blocked, we expect them to be
 539   // allowed to write later.
 540   session_.MarkWriteBlocked(kCryptoStreamId, kHighestPriority);
 541   session_.MarkWriteBlocked(kHeadersStreamId, kHighestPriority);
 542
 543   // Create a data stream, and although it is write blocked we never expect it
 544   // to be allowed to write as we are connection level flow control blocked.
 545   TestStream* stream = session_.CreateOutgoingDataStream();
 546   session_.MarkWriteBlocked(stream->id(), kSomeMiddlePriority);
 547   EXPECT_CALL(*stream, OnCanWrite()).Times(0);
 548
 549   // The crypto and headers streams should be called even though we are
 550   // connection flow control blocked.
 551   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 552   EXPECT_CALL(*crypto_stream, OnCanWrite()).Times(1);
 553   TestHeadersStream* headers_stream = new TestHeadersStream(&session_);
 554   QuicSessionPeer::SetHeadersStream(&session_, headers_stream);
 555   EXPECT_CALL(*headers_stream, OnCanWrite()).Times(1);
 556
 557   session_.OnCanWrite();
 558   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 559 }
 560
 561 TEST_P(QuicSessionTest, SendGoAway) {
 562   EXPECT_CALL(*connection_,
 563               SendGoAway(QUIC_PEER_GOING_AWAY, 0u, "Going Away."));
 564   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 565   EXPECT_TRUE(session_.goaway_sent());
 566
 567   EXPECT_CALL(*connection_,
 568               SendRstStream(3u, QUIC_STREAM_PEER_GOING_AWAY, 0)).Times(0);
 569   EXPECT_TRUE(session_.GetIncomingDataStream(3u));
 570 }
 571
 572 TEST_P(QuicSessionTest, DoNotSendGoAwayTwice) {
 573   EXPECT_CALL(*connection_,
 574               SendGoAway(QUIC_PEER_GOING_AWAY, 0u, "Going Away.")).Times(1);
 575   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 576   EXPECT_TRUE(session_.goaway_sent());
 577   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 578 }
 579
 580 TEST_P(QuicSessionTest, IncreasedTimeoutAfterCryptoHandshake) {
 581   // Add 1 to the connection timeout on the server side.
 582   EXPECT_EQ(kDefaultInitialTimeoutSecs + 1,
 583             QuicConnectionPeer::GetNetworkTimeout(connection_).ToSeconds());
 584   CryptoHandshakeMessage msg;
 585   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 586   EXPECT_EQ(kDefaultTimeoutSecs + 1,
 587             QuicConnectionPeer::GetNetworkTimeout(connection_).ToSeconds());
 588 }
 589
 590 TEST_P(QuicSessionTest, RstStreamBeforeHeadersDecompressed) {
 591   // Send two bytes of payload.
 592   QuicStreamFrame data1(kClientDataStreamId1, false, 0, MakeIOVector("HT"));
 593   vector<QuicStreamFrame> frames;
 594   frames.push_back(data1);
 595   session_.OnStreamFrames(frames);
 596   EXPECT_EQ(1u, session_.GetNumOpenStreams());
 597
 598   QuicRstStreamFrame rst1(kClientDataStreamId1, QUIC_STREAM_NO_ERROR, 0);
 599   session_.OnRstStream(rst1);
 600   EXPECT_EQ(0u, session_.GetNumOpenStreams());
 601   // Connection should remain alive.
 602   EXPECT_TRUE(connection_->connected());
 603 }
 604
 605 TEST_P(QuicSessionTest, MultipleRstStreamsCauseSingleConnectionClose) {
 606   // If multiple invalid reset stream frames arrive in a single packet, this
 607   // should trigger a connection close. However there is no need to send
 608   // multiple connection close frames.
 609
 610   // Create valid stream.
 611   QuicStreamFrame data1(kClientDataStreamId1, false, 0, MakeIOVector("HT"));
 612   vector<QuicStreamFrame> frames;
 613   frames.push_back(data1);
 614   session_.OnStreamFrames(frames);
 615   EXPECT_EQ(1u, session_.GetNumOpenStreams());
 616
 617   // Process first invalid stream reset, resulting in the connection being
 618   // closed.
 619   EXPECT_CALL(*connection_, SendConnectionClose(QUIC_INVALID_STREAM_ID))
 620       .Times(1);
 621   QuicStreamId kLargeInvalidStreamId = 99999999;
 622   QuicRstStreamFrame rst1(kLargeInvalidStreamId, QUIC_STREAM_NO_ERROR, 0);
 623   session_.OnRstStream(rst1);
 624   QuicConnectionPeer::CloseConnection(connection_);
 625
 626   // Processing of second invalid stream reset should not result in the
 627   // connection being closed for a second time.
 628   QuicRstStreamFrame rst2(kLargeInvalidStreamId, QUIC_STREAM_NO_ERROR, 0);
 629   session_.OnRstStream(rst2);
 630 }
 631
 632 TEST_P(QuicSessionTest, HandshakeUnblocksFlowControlBlockedStream) {
 633   // Test that if a stream is flow control blocked, then on receipt of the SHLO
 634   // containing a suitable send window offset, the stream becomes unblocked.
 635   if (version() <= QUIC_VERSION_16) {
 636     return;
 637   }
 638
 639   // Ensure that Writev consumes all the data it is given (simulate no socket
 640   // blocking).
 641   session_.set_writev_consumes_all_data(true);
 642
 643   // Create a stream, and send enough data to make it flow control blocked.
 644   TestStream* stream2 = session_.CreateOutgoingDataStream();
 645   string body(kDefaultFlowControlSendWindow, '.');
 646   EXPECT_FALSE(stream2->flow_controller()->IsBlocked());
 647   stream2->SendBody(body, false);
 648   EXPECT_TRUE(stream2->flow_controller()->IsBlocked());
 649
 650   // Now complete the crypto handshake, resulting in an increased flow control
 651   // send window.
 652   CryptoHandshakeMessage msg;
 653   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 654
 655   // Stream is now unblocked.
 656   EXPECT_FALSE(stream2->flow_controller()->IsBlocked());
 657 }
 658
 659 TEST_P(QuicSessionTest, InvalidFlowControlWindowInHandshake) {
 660   // TODO(rjshade): Remove this test when removing QUIC_VERSION_19.
 661   // Test that receipt of an invalid (< default) flow control window from
 662   // the peer results in the connection being torn down.
 663   if (version() <= QUIC_VERSION_16 || version() > QUIC_VERSION_19) {
 664     return;
 665   }
 666
 667   uint32 kInvalidWindow = kDefaultFlowControlSendWindow - 1;
 668   QuicConfigPeer::SetReceivedInitialFlowControlWindow(session_.config(),
 669                                                       kInvalidWindow);
 670
 671   EXPECT_CALL(*connection_,
 672               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW)).Times(2);
 673   session_.OnConfigNegotiated();
 674 }
 675
 676 TEST_P(QuicSessionTest, InvalidStreamFlowControlWindowInHandshake) {
 677   // Test that receipt of an invalid (< default) stream flow control window from
 678   // the peer results in the connection being torn down.
 679   if (version() <= QUIC_VERSION_19) {
 680     return;
 681   }
 682
 683   uint32 kInvalidWindow = kDefaultFlowControlSendWindow - 1;
 684   QuicConfigPeer::SetReceivedInitialStreamFlowControlWindow(session_.config(),
 685                                                             kInvalidWindow);
 686
 687   EXPECT_CALL(*connection_,
 688               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW));
 689   session_.OnConfigNegotiated();
 690 }
 691
 692 TEST_P(QuicSessionTest, InvalidSessionFlowControlWindowInHandshake) {
 693   // Test that receipt of an invalid (< default) session flow control window
 694   // from the peer results in the connection being torn down.
 695   if (version() <= QUIC_VERSION_19) {
 696     return;
 697   }
 698
 699   uint32 kInvalidWindow = kDefaultFlowControlSendWindow - 1;
 700   QuicConfigPeer::SetReceivedInitialSessionFlowControlWindow(session_.config(),
 701                                                              kInvalidWindow);
 702
 703   EXPECT_CALL(*connection_,
 704               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW));
 705   session_.OnConfigNegotiated();
 706 }
 707
 708 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingRstOutOfOrder) {
 709   if (version() < QUIC_VERSION_19) {
 710     return;
 711   }
 712
 713   // Test that when we receive an out of order stream RST we correctly adjust
 714   // our connection level flow control receive window.
 715   // On close, the stream should mark as consumed all bytes between the highest
 716   // byte consumed so far and the final byte offset from the RST frame.
 717   TestStream* stream = session_.CreateOutgoingDataStream();
 718
 719   const QuicStreamOffset kByteOffset =
 720       1 + kInitialSessionFlowControlWindowForTest / 2;
 721
 722   // Expect no stream WINDOW_UPDATE frames, as stream read side closed.
 723   EXPECT_CALL(*connection_, SendWindowUpdate(stream->id(), _)).Times(0);
 724   // We do expect a connection level WINDOW_UPDATE when the stream is reset.
 725   EXPECT_CALL(*connection_,
 726               SendWindowUpdate(0, kInitialSessionFlowControlWindowForTest +
 727                                       kByteOffset)).Times(1);
 728
 729   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 730                                kByteOffset);
 731   session_.OnRstStream(rst_frame);
 732   session_.PostProcessAfterData();
 733   EXPECT_EQ(kByteOffset, session_.flow_controller()->bytes_consumed());
 734 }
 735
 736 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingFinAndLocalReset) {
 737   if (version() < QUIC_VERSION_19) {
 738     return;
 739   }
 740
 741   // Test the situation where we receive a FIN on a stream, and before we fully
 742   // consume all the data from the sequencer buffer we locally RST the stream.
 743   // The bytes between highest consumed byte, and the final byte offset that we
 744   // determined when the FIN arrived, should be marked as consumed at the
 745   // connection level flow controller when the stream is reset.
 746   TestStream* stream = session_.CreateOutgoingDataStream();
 747
 748   const QuicStreamOffset kByteOffset =
 749       1 + kInitialSessionFlowControlWindowForTest / 2;
 750   QuicStreamFrame frame(stream->id(), true, kByteOffset, IOVector());
 751   vector<QuicStreamFrame> frames;
 752   frames.push_back(frame);
 753   session_.OnStreamFrames(frames);
 754   session_.PostProcessAfterData();
 755
 756   EXPECT_EQ(0u, stream->flow_controller()->bytes_consumed());
 757   EXPECT_EQ(kByteOffset,
 758             stream->flow_controller()->highest_received_byte_offset());
 759
 760   // We only expect to see a connection WINDOW_UPDATE when talking
 761   // QUIC_VERSION_19, as in this case both stream and session flow control
 762   // windows are the same size. In later versions we will not see a connection
 763   // level WINDOW_UPDATE when exhausting a stream, as the stream flow control
 764   // limit is much lower than the connection flow control limit.
 765   if (version() == QUIC_VERSION_19) {
 766     // Expect no stream WINDOW_UPDATE frames, as stream read side closed.
 767     EXPECT_CALL(*connection_, SendWindowUpdate(stream->id(), _)).Times(0);
 768     // We do expect a connection level WINDOW_UPDATE when the stream is reset.
 769     EXPECT_CALL(*connection_,
 770                 SendWindowUpdate(0, kInitialSessionFlowControlWindowForTest +
 771                                         kByteOffset)).Times(1);
 772   }
 773
 774   // Reset stream locally.
 775   stream->Reset(QUIC_STREAM_CANCELLED);
 776   EXPECT_EQ(kByteOffset, session_.flow_controller()->bytes_consumed());
 777 }
 778
 779 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingFinAfterRst) {
 780   // Test that when we RST the stream (and tear down stream state), and then
 781   // receive a FIN from the peer, we correctly adjust our connection level flow
 782   // control receive window.
 783   if (version() < QUIC_VERSION_19) {
 784     return;
 785   }
 786
 787   // Connection starts with some non-zero highest received byte offset,
 788   // due to other active streams.
 789   const uint64 kInitialConnectionBytesConsumed = 567;
 790   const uint64 kInitialConnectionHighestReceivedOffset = 1234;
 791   EXPECT_LT(kInitialConnectionBytesConsumed,
 792             kInitialConnectionHighestReceivedOffset);
 793   session_.flow_controller()->UpdateHighestReceivedOffset(
 794       kInitialConnectionHighestReceivedOffset);
 795   session_.flow_controller()->AddBytesConsumed(kInitialConnectionBytesConsumed);
 796
 797   // Reset our stream: this results in the stream being closed locally.
 798   TestStream* stream = session_.CreateOutgoingDataStream();
 799   stream->Reset(QUIC_STREAM_CANCELLED);
 800
 801   // Now receive a response from the peer with a FIN. We should handle this by
 802   // adjusting the connection level flow control receive window to take into
 803   // account the total number of bytes sent by the peer.
 804   const QuicStreamOffset kByteOffset = 5678;
 805   string body = "hello";
 806   IOVector data = MakeIOVector(body);
 807   QuicStreamFrame frame(stream->id(), true, kByteOffset, data);
 808   vector<QuicStreamFrame> frames;
 809   frames.push_back(frame);
 810   session_.OnStreamFrames(frames);
 811
 812   QuicStreamOffset total_stream_bytes_sent_by_peer =
 813       kByteOffset + body.length();
 814   EXPECT_EQ(kInitialConnectionBytesConsumed + total_stream_bytes_sent_by_peer,
 815             session_.flow_controller()->bytes_consumed());
 816   EXPECT_EQ(
 817       kInitialConnectionHighestReceivedOffset + total_stream_bytes_sent_by_peer,
 818       session_.flow_controller()->highest_received_byte_offset());
 819 }
 820
 821 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingRstAfterRst) {
 822   // Test that when we RST the stream (and tear down stream state), and then
 823   // receive a RST from the peer, we correctly adjust our connection level flow
 824   // control receive window.
 825   if (version() < QUIC_VERSION_19) {
 826     return;
 827   }
 828
 829   // Connection starts with some non-zero highest received byte offset,
 830   // due to other active streams.
 831   const uint64 kInitialConnectionBytesConsumed = 567;
 832   const uint64 kInitialConnectionHighestReceivedOffset = 1234;
 833   EXPECT_LT(kInitialConnectionBytesConsumed,
 834             kInitialConnectionHighestReceivedOffset);
 835   session_.flow_controller()->UpdateHighestReceivedOffset(
 836       kInitialConnectionHighestReceivedOffset);
 837   session_.flow_controller()->AddBytesConsumed(kInitialConnectionBytesConsumed);
 838
 839   // Reset our stream: this results in the stream being closed locally.
 840   TestStream* stream = session_.CreateOutgoingDataStream();
 841   stream->Reset(QUIC_STREAM_CANCELLED);
 842
 843   // Now receive a RST from the peer. We should handle this by adjusting the
 844   // connection level flow control receive window to take into account the total
 845   // number of bytes sent by the peer.
 846   const QuicStreamOffset kByteOffset = 5678;
 847   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 848                                kByteOffset);
 849   session_.OnRstStream(rst_frame);
 850
 851   EXPECT_EQ(kInitialConnectionBytesConsumed + kByteOffset,
 852             session_.flow_controller()->bytes_consumed());
 853   EXPECT_EQ(kInitialConnectionHighestReceivedOffset + kByteOffset,
 854             session_.flow_controller()->highest_received_byte_offset());
 855 }
 856
 857 TEST_P(QuicSessionTest, FlowControlWithInvalidFinalOffset) {
 858   // Test that if we receive a stream RST with a highest byte offset that
 859   // violates flow control, that we close the connection.
 860   if (version() <= QUIC_VERSION_16) {
 861     return;
 862   }
 863
 864   const uint64 kLargeOffset = kInitialSessionFlowControlWindowForTest + 1;
 865   EXPECT_CALL(*connection_,
 866               SendConnectionClose(QUIC_FLOW_CONTROL_RECEIVED_TOO_MUCH_DATA))
 867       .Times(2);
 868
 869   // Check that stream frame + FIN results in connection close.
 870   TestStream* stream = session_.CreateOutgoingDataStream();
 871   stream->Reset(QUIC_STREAM_CANCELLED);
 872   QuicStreamFrame frame(stream->id(), true, kLargeOffset, IOVector());
 873   vector<QuicStreamFrame> frames;
 874   frames.push_back(frame);
 875   session_.OnStreamFrames(frames);
 876
 877   // Check that RST results in connection close.
 878   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 879                                kLargeOffset);
 880   session_.OnRstStream(rst_frame);
 881 }
 882
 883 TEST_P(QuicSessionTest, VersionNegotiationDisablesFlowControl) {
 884   if (version() < QUIC_VERSION_19) {
 885     return;
 886   }
 887
 888   // Test that after successful version negotiation, flow control is disabled
 889   // appropriately at both the connection and stream level.
 890
 891   // Initially both stream and connection flow control are enabled.
 892   TestStream* stream = session_.CreateOutgoingDataStream();
 893   EXPECT_TRUE(stream->flow_controller()->IsEnabled());
 894   EXPECT_TRUE(session_.flow_controller()->IsEnabled());
 895
 896   // Version 18 implies that stream flow control is enabled, but connection
 897   // level is disabled.
 898   session_.OnSuccessfulVersionNegotiation(QUIC_VERSION_18);
 899   EXPECT_FALSE(session_.flow_controller()->IsEnabled());
 900   EXPECT_TRUE(stream->flow_controller()->IsEnabled());
 901
 902   // Version 16 means all flow control is disabled.
 903   session_.OnSuccessfulVersionNegotiation(QUIC_VERSION_16);
 904   EXPECT_FALSE(session_.flow_controller()->IsEnabled());
 905   EXPECT_FALSE(stream->flow_controller()->IsEnabled());
 906 }
 907
 908 TEST_P(QuicSessionTest, TooManyUnfinishedStreamsCauseConnectionClose) {
 909   if (version() < QUIC_VERSION_18) {
 910     return;
 911   }
 912   // If a buggy/malicious peer creates too many streams that are not ended with
 913   // a FIN or RST then we send a connection close.
 914   ValueRestore<bool> old_flag(&FLAGS_close_quic_connection_unfinished_streams,
 915                               true);
 916
 917   EXPECT_CALL(*connection_,
 918               SendConnectionClose(QUIC_TOO_MANY_UNFINISHED_STREAMS)).Times(1);
 919
 920   const int kMaxStreams = 5;
 921   QuicSessionPeer::SetMaxOpenStreams(&session_, kMaxStreams);
 922
 923   // Create kMaxStreams + 1 data streams, and close them all without receiving a
 924   // FIN or a RST from the client.
 925   const int kFirstStreamId = kClientDataStreamId1;
 926   const int kFinalStreamId = kClientDataStreamId1 + 2 * kMaxStreams + 1;
 927   for (int i = kFirstStreamId; i < kFinalStreamId; i += 2) {
 928     QuicStreamFrame data1(i, false, 0, MakeIOVector("HT"));
 929     vector<QuicStreamFrame> frames;
 930     frames.push_back(data1);
 931     session_.OnStreamFrames(frames);
 932     EXPECT_EQ(1u, session_.GetNumOpenStreams());
 933     session_.CloseStream(i);
 934   }
 935 }
 936
 937 }  // namespace
 938 }  // namespace test
 939 }  // namespace net