net/quic/quic_data_stream_test.cc

   1 // Copyright 2013 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_data_stream.h"
   6
   7 #include "net/quic/quic_ack_notifier.h"
   8 #include "net/quic/quic_connection.h"
   9 #include "net/quic/quic_utils.h"
  10 #include "net/quic/quic_write_blocked_list.h"
  11 #include "net/quic/spdy_utils.h"
  12 #include "net/quic/test_tools/quic_flow_controller_peer.h"
  13 #include "net/quic/test_tools/quic_session_peer.h"
  14 #include "net/quic/test_tools/quic_test_utils.h"
  15 #include "net/quic/test_tools/reliable_quic_stream_peer.h"
  16 #include "net/test/gtest_util.h"
  17 #include "testing/gmock/include/gmock/gmock.h"
  18
  19 using base::StringPiece;
  20 using std::min;
  21 using std::string;
  22 using testing::AnyNumber;
  23 using testing::InSequence;
  24 using testing::Return;
  25 using testing::SaveArg;
  26 using testing::StrictMock;
  27 using testing::_;
  28
  29 namespace net {
  30 namespace test {
  31 namespace {
  32
  33 const bool kShouldProcessData = true;
  34
  35 class TestStream : public QuicDataStream {
  36  public:
  37   TestStream(QuicStreamId id,
  38              QuicSpdySession* session,
  39              bool should_process_data)
  40       : QuicDataStream(id, session),
  41         should_process_data_(should_process_data) {}
  42
  43   uint32 ProcessData(const char* data, uint32 data_len) override {
  44     EXPECT_NE(0u, data_len);
  45     DVLOG(1) << "ProcessData data_len: " << data_len;
  46     data_ += string(data, data_len);
  47     return should_process_data_ ? data_len : 0;
  48   }
  49
  50   using ReliableQuicStream::WriteOrBufferData;
  51   using ReliableQuicStream::CloseReadSide;
  52   using ReliableQuicStream::CloseWriteSide;
  53
  54   const string& data() const { return data_; }
  55
  56  private:
  57   bool should_process_data_;
  58   string data_;
  59 };
  60
  61 class QuicDataStreamTest : public ::testing::TestWithParam<QuicVersion> {
  62  public:
  63   QuicDataStreamTest() {
  64     headers_[":host"] = "www.google.com";
  65     headers_[":path"] = "/index.hml";
  66     headers_[":scheme"] = "https";
  67     headers_["cookie"] =
  68         "__utma=208381060.1228362404.1372200928.1372200928.1372200928.1; "
  69         "__utmc=160408618; "
  70         "GX=DQAAAOEAAACWJYdewdE9rIrW6qw3PtVi2-d729qaa-74KqOsM1NVQblK4VhX"
  71         "hoALMsy6HOdDad2Sz0flUByv7etmo3mLMidGrBoljqO9hSVA40SLqpG_iuKKSHX"
  72         "RW3Np4bq0F0SDGDNsW0DSmTS9ufMRrlpARJDS7qAI6M3bghqJp4eABKZiRqebHT"
  73         "pMU-RXvTI5D5oCF1vYxYofH_l1Kviuiy3oQ1kS1enqWgbhJ2t61_SNdv-1XJIS0"
  74         "O3YeHLmVCs62O6zp89QwakfAWK9d3IDQvVSJzCQsvxvNIvaZFa567MawWlXg0Rh"
  75         "1zFMi5vzcns38-8_Sns; "
  76         "GA=v*2%2Fmem*57968640*47239936%2Fmem*57968640*47114716%2Fno-nm-"
  77         "yj*15%2Fno-cc-yj*5%2Fpc-ch*133685%2Fpc-s-cr*133947%2Fpc-s-t*1339"
  78         "47%2Fno-nm-yj*4%2Fno-cc-yj*1%2Fceft-as*1%2Fceft-nqas*0%2Fad-ra-c"
  79         "v_p%2Fad-nr-cv_p-f*1%2Fad-v-cv_p*859%2Fad-ns-cv_p-f*1%2Ffn-v-ad%"
  80         "2Fpc-t*250%2Fpc-cm*461%2Fpc-s-cr*722%2Fpc-s-t*722%2Fau_p*4"
  81         "SICAID=AJKiYcHdKgxum7KMXG0ei2t1-W4OD1uW-ecNsCqC0wDuAXiDGIcT_HA2o1"
  82         "3Rs1UKCuBAF9g8rWNOFbxt8PSNSHFuIhOo2t6bJAVpCsMU5Laa6lewuTMYI8MzdQP"
  83         "ARHKyW-koxuhMZHUnGBJAM1gJODe0cATO_KGoX4pbbFxxJ5IicRxOrWK_5rU3cdy6"
  84         "edlR9FsEdH6iujMcHkbE5l18ehJDwTWmBKBzVD87naobhMMrF6VvnDGxQVGp9Ir_b"
  85         "Rgj3RWUoPumQVCxtSOBdX0GlJOEcDTNCzQIm9BSfetog_eP_TfYubKudt5eMsXmN6"
  86         "QnyXHeGeK2UINUzJ-D30AFcpqYgH9_1BvYSpi7fc7_ydBU8TaD8ZRxvtnzXqj0RfG"
  87         "tuHghmv3aD-uzSYJ75XDdzKdizZ86IG6Fbn1XFhYZM-fbHhm3mVEXnyRW4ZuNOLFk"
  88         "Fas6LMcVC6Q8QLlHYbXBpdNFuGbuZGUnav5C-2I_-46lL0NGg3GewxGKGHvHEfoyn"
  89         "EFFlEYHsBQ98rXImL8ySDycdLEFvBPdtctPmWCfTxwmoSMLHU2SCVDhbqMWU5b0yr"
  90         "JBCScs_ejbKaqBDoB7ZGxTvqlrB__2ZmnHHjCr8RgMRtKNtIeuZAo ";
  91   }
  92
  93   void Initialize(bool stream_should_process_data) {
  94     connection_ = new testing::StrictMock<MockConnection>(
  95         Perspective::IS_SERVER, SupportedVersions(GetParam()));
  96     session_.reset(new testing::StrictMock<MockQuicSpdySession>(connection_));
  97     stream_.reset(new TestStream(kClientDataStreamId1, session_.get(),
  98                                  stream_should_process_data));
  99     stream2_.reset(new TestStream(kClientDataStreamId2, session_.get(),
 100                                   stream_should_process_data));
 101     write_blocked_list_ =
 102         QuicSessionPeer::GetWriteBlockedStreams(session_.get());
 103   }
 104
 105  protected:
 106   MockConnection* connection_;
 107   scoped_ptr<MockQuicSpdySession> session_;
 108   scoped_ptr<TestStream> stream_;
 109   scoped_ptr<TestStream> stream2_;
 110   SpdyHeaderBlock headers_;
 111   QuicWriteBlockedList* write_blocked_list_;
 112 };
 113
 114 INSTANTIATE_TEST_CASE_P(Tests, QuicDataStreamTest,
 115                         ::testing::ValuesIn(QuicSupportedVersions()));
 116
 117 TEST_P(QuicDataStreamTest, ProcessHeaders) {
 118   Initialize(kShouldProcessData);
 119
 120   string headers =
 121       SpdyUtils::SerializeUncompressedHeaders(headers_, GetParam());
 122   stream_->OnStreamHeadersPriority(QuicUtils::HighestPriority());
 123   stream_->OnStreamHeaders(headers);
 124   EXPECT_EQ(headers, stream_->data());
 125   stream_->OnStreamHeadersComplete(false, headers.size());
 126   EXPECT_EQ(QuicUtils::HighestPriority(), stream_->EffectivePriority());
 127   EXPECT_EQ(headers, stream_->data());
 128   EXPECT_FALSE(stream_->IsDoneReading());
 129 }
 130
 131 TEST_P(QuicDataStreamTest, ProcessHeadersAndBody) {
 132   Initialize(kShouldProcessData);
 133
 134   string headers =
 135       SpdyUtils::SerializeUncompressedHeaders(headers_, GetParam());
 136   string body = "this is the body";
 137
 138   stream_->OnStreamHeaders(headers);
 139   EXPECT_EQ(headers, stream_->data());
 140   stream_->OnStreamHeadersComplete(false, headers.size());
 141   QuicStreamFrame frame(kClientDataStreamId1, false, 0, StringPiece(body));
 142   stream_->OnStreamFrame(frame);
 143
 144   EXPECT_EQ(headers + body, stream_->data());
 145 }
 146
 147 TEST_P(QuicDataStreamTest, ProcessHeadersAndBodyFragments) {
 148   string headers =
 149       SpdyUtils::SerializeUncompressedHeaders(headers_, GetParam());
 150   string body = "this is the body";
 151
 152   for (size_t fragment_size = 1; fragment_size < body.size();
 153        ++fragment_size) {
 154     Initialize(kShouldProcessData);
 155     for (size_t offset = 0; offset < headers.size();
 156          offset += fragment_size) {
 157       size_t remaining_data = headers.size() - offset;
 158       StringPiece fragment(headers.data() + offset,
 159                            min(fragment_size, remaining_data));
 160       stream_->OnStreamHeaders(fragment);
 161     }
 162     stream_->OnStreamHeadersComplete(false, headers.size());
 163     for (size_t offset = 0; offset < body.size(); offset += fragment_size) {
 164       size_t remaining_data = body.size() - offset;
 165       StringPiece fragment(body.data() + offset,
 166                            min(fragment_size, remaining_data));
 167       QuicStreamFrame frame(kClientDataStreamId1, false, offset,
 168                             StringPiece(fragment));
 169       stream_->OnStreamFrame(frame);
 170     }
 171     ASSERT_EQ(headers + body,
 172               stream_->data()) << "fragment_size: " << fragment_size;
 173   }
 174 }
 175
 176 TEST_P(QuicDataStreamTest, ProcessHeadersAndBodyFragmentsSplit) {
 177   string headers =
 178       SpdyUtils::SerializeUncompressedHeaders(headers_, GetParam());
 179   string body = "this is the body";
 180
 181   for (size_t split_point = 1; split_point < body.size() - 1; ++split_point) {
 182     Initialize(kShouldProcessData);
 183     StringPiece headers1(headers.data(), split_point);
 184     stream_->OnStreamHeaders(headers1);
 185
 186     StringPiece headers2(headers.data() + split_point,
 187                          headers.size() - split_point);
 188     stream_->OnStreamHeaders(headers2);
 189     stream_->OnStreamHeadersComplete(false, headers.size());
 190
 191     StringPiece fragment1(body.data(), split_point);
 192     QuicStreamFrame frame1(kClientDataStreamId1, false, 0,
 193                            StringPiece(fragment1));
 194     stream_->OnStreamFrame(frame1);
 195
 196     StringPiece fragment2(body.data() + split_point,
 197                           body.size() - split_point);
 198     QuicStreamFrame frame2(kClientDataStreamId1, false, split_point,
 199                            StringPiece(fragment2));
 200     stream_->OnStreamFrame(frame2);
 201
 202     ASSERT_EQ(headers + body,
 203               stream_->data()) << "split_point: " << split_point;
 204   }
 205 }
 206
 207 TEST_P(QuicDataStreamTest, ProcessHeadersAndBodyReadv) {
 208   Initialize(!kShouldProcessData);
 209
 210   string headers =
 211       SpdyUtils::SerializeUncompressedHeaders(headers_, GetParam());
 212   string body = "this is the body";
 213
 214   stream_->OnStreamHeaders(headers);
 215   EXPECT_EQ(headers, stream_->data());
 216   stream_->OnStreamHeadersComplete(false, headers.size());
 217   QuicStreamFrame frame(kClientDataStreamId1, false, 0, StringPiece(body));
 218   stream_->OnStreamFrame(frame);
 219
 220   char buffer[2048];
 221   ASSERT_LT(headers.length() + body.length(), arraysize(buffer));
 222   struct iovec vec;
 223   vec.iov_base = buffer;
 224   vec.iov_len = arraysize(buffer);
 225
 226   size_t bytes_read = stream_->Readv(&vec, 1);
 227   EXPECT_EQ(headers.length(), bytes_read);
 228   EXPECT_EQ(headers, string(buffer, bytes_read));
 229
 230   bytes_read = stream_->Readv(&vec, 1);
 231   EXPECT_EQ(body.length(), bytes_read);
 232   EXPECT_EQ(body, string(buffer, bytes_read));
 233 }
 234
 235 TEST_P(QuicDataStreamTest, ProcessHeadersAndBodyIncrementalReadv) {
 236   Initialize(!kShouldProcessData);
 237
 238   string headers =
 239       SpdyUtils::SerializeUncompressedHeaders(headers_, GetParam());
 240   string body = "this is the body";
 241   stream_->OnStreamHeaders(headers);
 242   EXPECT_EQ(headers, stream_->data());
 243   stream_->OnStreamHeadersComplete(false, headers.size());
 244   QuicStreamFrame frame(kClientDataStreamId1, false, 0, StringPiece(body));
 245   stream_->OnStreamFrame(frame);
 246
 247   char buffer[1];
 248   struct iovec vec;
 249   vec.iov_base = buffer;
 250   vec.iov_len = arraysize(buffer);
 251
 252   string data = headers + body;
 253   for (size_t i = 0; i < data.length(); ++i) {
 254     size_t bytes_read = stream_->Readv(&vec, 1);
 255     ASSERT_EQ(1u, bytes_read);
 256     EXPECT_EQ(data.data()[i], buffer[0]);
 257   }
 258 }
 259
 260 TEST_P(QuicDataStreamTest, ProcessHeadersUsingReadvWithMultipleIovecs) {
 261   Initialize(!kShouldProcessData);
 262
 263   string headers =
 264       SpdyUtils::SerializeUncompressedHeaders(headers_, GetParam());
 265   string body = "this is the body";
 266   stream_->OnStreamHeaders(headers);
 267   EXPECT_EQ(headers, stream_->data());
 268   stream_->OnStreamHeadersComplete(false, headers.size());
 269   QuicStreamFrame frame(kClientDataStreamId1, false, 0, StringPiece(body));
 270   stream_->OnStreamFrame(frame);
 271
 272   char buffer1[1];
 273   char buffer2[1];
 274   struct iovec vec[2];
 275   vec[0].iov_base = buffer1;
 276   vec[0].iov_len = arraysize(buffer1);
 277   vec[1].iov_base = buffer2;
 278   vec[1].iov_len = arraysize(buffer2);
 279   string data = headers + body;
 280   for (size_t i = 0; i < data.length(); i += 2) {
 281     size_t bytes_read = stream_->Readv(vec, 2);
 282     ASSERT_EQ(2u, bytes_read) << i;
 283     ASSERT_EQ(data.data()[i], buffer1[0]) << i;
 284     ASSERT_EQ(data.data()[i + 1], buffer2[0]) << i;
 285   }
 286 }
 287
 288 TEST_P(QuicDataStreamTest, StreamFlowControlBlocked) {
 289   // Tests that we send a BLOCKED frame to the peer when we attempt to write,
 290   // but are flow control blocked.
 291   Initialize(kShouldProcessData);
 292
 293   // Set a small flow control limit.
 294   const uint64 kWindow = 36;
 295   QuicFlowControllerPeer::SetSendWindowOffset(stream_->flow_controller(),
 296                                               kWindow);
 297   EXPECT_EQ(kWindow, QuicFlowControllerPeer::SendWindowOffset(
 298                          stream_->flow_controller()));
 299
 300   // Try to send more data than the flow control limit allows.
 301   string headers =
 302       SpdyUtils::SerializeUncompressedHeaders(headers_, GetParam());
 303   string body;
 304   const uint64 kOverflow = 15;
 305   GenerateBody(&body, kWindow + kOverflow);
 306
 307   EXPECT_CALL(*connection_, SendBlocked(kClientDataStreamId1));
 308   EXPECT_CALL(*session_, WritevData(kClientDataStreamId1, _, _, _, _, _))
 309       .WillOnce(Return(QuicConsumedData(kWindow, true)));
 310   stream_->WriteOrBufferData(body, false, nullptr);
 311
 312   // Should have sent as much as possible, resulting in no send window left.
 313   EXPECT_EQ(0u,
 314             QuicFlowControllerPeer::SendWindowSize(stream_->flow_controller()));
 315
 316   // And we should have queued the overflowed data.
 317   EXPECT_EQ(kOverflow,
 318             ReliableQuicStreamPeer::SizeOfQueuedData(stream_.get()));
 319 }
 320
 321 TEST_P(QuicDataStreamTest, StreamFlowControlNoWindowUpdateIfNotConsumed) {
 322   // The flow control receive window decreases whenever we add new bytes to the
 323   // sequencer, whether they are consumed immediately or buffered. However we
 324   // only send WINDOW_UPDATE frames based on increasing number of bytes
 325   // consumed.
 326
 327   // Don't process data - it will be buffered instead.
 328   Initialize(!kShouldProcessData);
 329
 330   // Expect no WINDOW_UPDATE frames to be sent.
 331   EXPECT_CALL(*connection_, SendWindowUpdate(_, _)).Times(0);
 332
 333   // Set a small flow control receive window.
 334   const uint64 kWindow = 36;
 335   QuicFlowControllerPeer::SetReceiveWindowOffset(stream_->flow_controller(),
 336                                                  kWindow);
 337   QuicFlowControllerPeer::SetMaxReceiveWindow(stream_->flow_controller(),
 338                                               kWindow);
 339   EXPECT_EQ(kWindow, QuicFlowControllerPeer::ReceiveWindowOffset(
 340                          stream_->flow_controller()));
 341
 342   // Stream receives enough data to fill a fraction of the receive window.
 343   string headers =
 344       SpdyUtils::SerializeUncompressedHeaders(headers_, GetParam());
 345   string body;
 346   GenerateBody(&body, kWindow / 3);
 347   stream_->OnStreamHeaders(headers);
 348   EXPECT_EQ(headers, stream_->data());
 349   stream_->OnStreamHeadersComplete(false, headers.size());
 350
 351   QuicStreamFrame frame1(kClientDataStreamId1, false, 0, StringPiece(body));
 352   stream_->OnStreamFrame(frame1);
 353   EXPECT_EQ(kWindow - (kWindow / 3), QuicFlowControllerPeer::ReceiveWindowSize(
 354                                          stream_->flow_controller()));
 355
 356   // Now receive another frame which results in the receive window being over
 357   // half full. This should all be buffered, decreasing the receive window but
 358   // not sending WINDOW_UPDATE.
 359   QuicStreamFrame frame2(kClientDataStreamId1, false, kWindow / 3,
 360                          StringPiece(body));
 361   stream_->OnStreamFrame(frame2);
 362   EXPECT_EQ(
 363       kWindow - (2 * kWindow / 3),
 364       QuicFlowControllerPeer::ReceiveWindowSize(stream_->flow_controller()));
 365 }
 366
 367 TEST_P(QuicDataStreamTest, StreamFlowControlWindowUpdate) {
 368   // Tests that on receipt of data, the stream updates its receive window offset
 369   // appropriately, and sends WINDOW_UPDATE frames when its receive window drops
 370   // too low.
 371   Initialize(kShouldProcessData);
 372
 373   // Set a small flow control limit.
 374   const uint64 kWindow = 36;
 375   QuicFlowControllerPeer::SetReceiveWindowOffset(stream_->flow_controller(),
 376                                                  kWindow);
 377   QuicFlowControllerPeer::SetMaxReceiveWindow(stream_->flow_controller(),
 378                                               kWindow);
 379   EXPECT_EQ(kWindow, QuicFlowControllerPeer::ReceiveWindowOffset(
 380                          stream_->flow_controller()));
 381
 382   // Stream receives enough data to fill a fraction of the receive window.
 383   string headers =
 384       SpdyUtils::SerializeUncompressedHeaders(headers_, GetParam());
 385   string body;
 386   GenerateBody(&body, kWindow / 3);
 387   stream_->OnStreamHeaders(headers);
 388   EXPECT_EQ(headers, stream_->data());
 389   stream_->OnStreamHeadersComplete(false, headers.size());
 390
 391   QuicStreamFrame frame1(kClientDataStreamId1, false, 0, StringPiece(body));
 392   stream_->OnStreamFrame(frame1);
 393   EXPECT_EQ(kWindow - (kWindow / 3), QuicFlowControllerPeer::ReceiveWindowSize(
 394                                          stream_->flow_controller()));
 395
 396   // Now receive another frame which results in the receive window being over
 397   // half full.  This will trigger the stream to increase its receive window
 398   // offset and send a WINDOW_UPDATE. The result will be again an available
 399   // window of kWindow bytes.
 400   QuicStreamFrame frame2(kClientDataStreamId1, false, kWindow / 3,
 401                          StringPiece(body));
 402   EXPECT_CALL(*connection_,
 403               SendWindowUpdate(kClientDataStreamId1,
 404                                QuicFlowControllerPeer::ReceiveWindowOffset(
 405                                    stream_->flow_controller()) +
 406                                    2 * kWindow / 3));
 407   stream_->OnStreamFrame(frame2);
 408   EXPECT_EQ(kWindow, QuicFlowControllerPeer::ReceiveWindowSize(
 409                          stream_->flow_controller()));
 410 }
 411
 412 TEST_P(QuicDataStreamTest, ConnectionFlowControlWindowUpdate) {
 413   // Tests that on receipt of data, the connection updates its receive window
 414   // offset appropriately, and sends WINDOW_UPDATE frames when its receive
 415   // window drops too low.
 416   Initialize(kShouldProcessData);
 417
 418   // Set a small flow control limit for streams and connection.
 419   const uint64 kWindow = 36;
 420   QuicFlowControllerPeer::SetReceiveWindowOffset(stream_->flow_controller(),
 421                                                  kWindow);
 422   QuicFlowControllerPeer::SetMaxReceiveWindow(stream_->flow_controller(),
 423                                               kWindow);
 424   QuicFlowControllerPeer::SetReceiveWindowOffset(stream2_->flow_controller(),
 425                                                  kWindow);
 426   QuicFlowControllerPeer::SetMaxReceiveWindow(stream2_->flow_controller(),
 427                                               kWindow);
 428   QuicFlowControllerPeer::SetReceiveWindowOffset(session_->flow_controller(),
 429                                                  kWindow);
 430   QuicFlowControllerPeer::SetMaxReceiveWindow(session_->flow_controller(),
 431                                               kWindow);
 432
 433   // Supply headers to both streams so that they are happy to receive data.
 434   string headers =
 435       SpdyUtils::SerializeUncompressedHeaders(headers_, GetParam());
 436   stream_->OnStreamHeaders(headers);
 437   stream_->OnStreamHeadersComplete(false, headers.size());
 438   stream2_->OnStreamHeaders(headers);
 439   stream2_->OnStreamHeadersComplete(false, headers.size());
 440
 441   // Each stream gets a quarter window of data. This should not trigger a
 442   // WINDOW_UPDATE for either stream, nor for the connection.
 443   string body;
 444   GenerateBody(&body, kWindow / 4);
 445   QuicStreamFrame frame1(kClientDataStreamId1, false, 0, StringPiece(body));
 446   stream_->OnStreamFrame(frame1);
 447   QuicStreamFrame frame2(kClientDataStreamId2, false, 0, StringPiece(body));
 448   stream2_->OnStreamFrame(frame2);
 449
 450   // Now receive a further single byte on one stream - again this does not
 451   // trigger a stream WINDOW_UPDATE, but now the connection flow control window
 452   // is over half full and thus a connection WINDOW_UPDATE is sent.
 453   EXPECT_CALL(*connection_, SendWindowUpdate(kClientDataStreamId1, _)).Times(0);
 454   EXPECT_CALL(*connection_, SendWindowUpdate(kClientDataStreamId2, _)).Times(0);
 455   EXPECT_CALL(*connection_,
 456               SendWindowUpdate(0, QuicFlowControllerPeer::ReceiveWindowOffset(
 457                                       session_->flow_controller()) +
 458                                       1 + kWindow / 2));
 459   QuicStreamFrame frame3(kClientDataStreamId1, false, (kWindow / 4),
 460                          StringPiece("a"));
 461   stream_->OnStreamFrame(frame3);
 462 }
 463
 464 TEST_P(QuicDataStreamTest, StreamFlowControlViolation) {
 465   // Tests that on if the peer sends too much data (i.e. violates the flow
 466   // control protocol), then we terminate the connection.
 467
 468   // Stream should not process data, so that data gets buffered in the
 469   // sequencer, triggering flow control limits.
 470   Initialize(!kShouldProcessData);
 471
 472   // Set a small flow control limit.
 473   const uint64 kWindow = 50;
 474   QuicFlowControllerPeer::SetReceiveWindowOffset(stream_->flow_controller(),
 475                                                  kWindow);
 476
 477   string headers =
 478       SpdyUtils::SerializeUncompressedHeaders(headers_, GetParam());
 479   stream_->OnStreamHeaders(headers);
 480   EXPECT_EQ(headers, stream_->data());
 481   stream_->OnStreamHeadersComplete(false, headers.size());
 482
 483   // Receive data to overflow the window, violating flow control.
 484   string body;
 485   GenerateBody(&body, kWindow + 1);
 486   QuicStreamFrame frame(kClientDataStreamId1, false, 0, StringPiece(body));
 487   EXPECT_CALL(*connection_,
 488               SendConnectionClose(QUIC_FLOW_CONTROL_RECEIVED_TOO_MUCH_DATA));
 489   stream_->OnStreamFrame(frame);
 490 }
 491
 492 TEST_P(QuicDataStreamTest, ConnectionFlowControlViolation) {
 493   // Tests that on if the peer sends too much data (i.e. violates the flow
 494   // control protocol), at the connection level (rather than the stream level)
 495   // then we terminate the connection.
 496
 497   // Stream should not process data, so that data gets buffered in the
 498   // sequencer, triggering flow control limits.
 499   Initialize(!kShouldProcessData);
 500
 501   // Set a small flow control window on streams, and connection.
 502   const uint64 kStreamWindow = 50;
 503   const uint64 kConnectionWindow = 10;
 504   QuicFlowControllerPeer::SetReceiveWindowOffset(stream_->flow_controller(),
 505                                                  kStreamWindow);
 506   QuicFlowControllerPeer::SetReceiveWindowOffset(session_->flow_controller(),
 507                                                  kConnectionWindow);
 508
 509   string headers =
 510       SpdyUtils::SerializeUncompressedHeaders(headers_, GetParam());
 511   stream_->OnStreamHeaders(headers);
 512   EXPECT_EQ(headers, stream_->data());
 513   stream_->OnStreamHeadersComplete(false, headers.size());
 514
 515   // Send enough data to overflow the connection level flow control window.
 516   string body;
 517   GenerateBody(&body, kConnectionWindow + 1);
 518   EXPECT_LT(body.size(),  kStreamWindow);
 519   QuicStreamFrame frame(kClientDataStreamId1, false, 0, StringPiece(body));
 520
 521   EXPECT_CALL(*connection_,
 522               SendConnectionClose(QUIC_FLOW_CONTROL_RECEIVED_TOO_MUCH_DATA));
 523   stream_->OnStreamFrame(frame);
 524 }
 525
 526 TEST_P(QuicDataStreamTest, StreamFlowControlFinNotBlocked) {
 527   // An attempt to write a FIN with no data should not be flow control blocked,
 528   // even if the send window is 0.
 529
 530   Initialize(kShouldProcessData);
 531
 532   // Set a flow control limit of zero.
 533   QuicFlowControllerPeer::SetReceiveWindowOffset(stream_->flow_controller(), 0);
 534   EXPECT_EQ(0u, QuicFlowControllerPeer::ReceiveWindowOffset(
 535                     stream_->flow_controller()));
 536
 537   // Send a frame with a FIN but no data. This should not be blocked.
 538   string body = "";
 539   bool fin = true;
 540
 541   EXPECT_CALL(*connection_, SendBlocked(kClientDataStreamId1)).Times(0);
 542   EXPECT_CALL(*session_, WritevData(kClientDataStreamId1, _, _, _, _, _))
 543       .WillOnce(Return(QuicConsumedData(0, fin)));
 544
 545   stream_->WriteOrBufferData(body, fin, nullptr);
 546 }
 547
 548 }  // namespace
 549 }  // namespace test
 550 }  // namespace net