net/websockets/websocket_basic_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 // Tests for WebSocketBasicStream. Note that we do not attempt to verify that
   6 // frame parsing itself functions correctly, as that is covered by the
   7 // WebSocketFrameParser tests.
   8
   9 #include "net/websockets/websocket_basic_stream.h"
  10
  11 #include <string.h>  // for memcpy() and memset().
  12
  13 #include <string>
  14
  15 #include "base/basictypes.h"
  16 #include "base/big_endian.h"
  17 #include "base/port.h"
  18 #include "net/base/capturing_net_log.h"
  19 #include "net/base/test_completion_callback.h"
  20 #include "net/socket/socket_test_util.h"
  21 #include "testing/gtest/include/gtest/gtest.h"
  22
  23 namespace net {
  24 namespace {
  25
  26 #define WEBSOCKET_BASIC_STREAM_TEST_DEFINE_CONSTANT(name, value) \
  27   const char k##name[] = value;                                  \
  28   const size_t k##name##Size = arraysize(k##name) - 1;
  29
  30 WEBSOCKET_BASIC_STREAM_TEST_DEFINE_CONSTANT(SampleFrame, "\x81\x06Sample");
  31 WEBSOCKET_BASIC_STREAM_TEST_DEFINE_CONSTANT(
  32     PartialLargeFrame,
  33     "\x81\x7F\x00\x00\x00\x00\x7F\xFF\xFF\xFF"
  34     "chromiunum ad pasco per loca insanis pullum manducat frumenti");
  35 const size_t kLargeFrameHeaderSize = 10;
  36 WEBSOCKET_BASIC_STREAM_TEST_DEFINE_CONSTANT(MultipleFrames,
  37                                             "\x81\x01X\x81\x01Y\x81\x01Z");
  38 WEBSOCKET_BASIC_STREAM_TEST_DEFINE_CONSTANT(EmptyFirstFrame, "\x01\x00");
  39 WEBSOCKET_BASIC_STREAM_TEST_DEFINE_CONSTANT(EmptyMiddleFrame, "\x00\x00");
  40 WEBSOCKET_BASIC_STREAM_TEST_DEFINE_CONSTANT(EmptyFinalTextFrame, "\x81\x00");
  41 WEBSOCKET_BASIC_STREAM_TEST_DEFINE_CONSTANT(EmptyFinalContinuationFrame,
  42                                             "\x80\x00");
  43 WEBSOCKET_BASIC_STREAM_TEST_DEFINE_CONSTANT(ValidPong, "\x8A\x00");
  44 // This frame encodes a payload length of 7 in two bytes, which is always
  45 // invalid.
  46 WEBSOCKET_BASIC_STREAM_TEST_DEFINE_CONSTANT(InvalidFrame,
  47                                             "\x81\x7E\x00\x07Invalid");
  48 // Control frames must have the FIN bit set. This one does not.
  49 WEBSOCKET_BASIC_STREAM_TEST_DEFINE_CONSTANT(PingFrameWithoutFin, "\x09\x00");
  50 // Control frames must have a payload of 125 bytes or less. This one has
  51 // a payload of 126 bytes.
  52 WEBSOCKET_BASIC_STREAM_TEST_DEFINE_CONSTANT(
  53     126BytePong,
  54     "\x8a\x7e\x00\x7eZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ"
  55     "ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ");
  56 WEBSOCKET_BASIC_STREAM_TEST_DEFINE_CONSTANT(CloseFrame,
  57                                             "\x88\x09\x03\xe8occludo");
  58 WEBSOCKET_BASIC_STREAM_TEST_DEFINE_CONSTANT(WriteFrame,
  59                                             "\x81\x85\x00\x00\x00\x00Write");
  60 WEBSOCKET_BASIC_STREAM_TEST_DEFINE_CONSTANT(MaskedEmptyPong,
  61                                             "\x8A\x80\x00\x00\x00\x00");
  62 const WebSocketMaskingKey kNulMaskingKey = {{'\0', '\0', '\0', '\0'}};
  63 const WebSocketMaskingKey kNonNulMaskingKey = {
  64     {'\x0d', '\x1b', '\x06', '\x17'}};
  65
  66 // A masking key generator function which generates the identity mask,
  67 // ie. "\0\0\0\0".
  68 WebSocketMaskingKey GenerateNulMaskingKey() { return kNulMaskingKey; }
  69
  70 // A masking key generation function which generates a fixed masking key with no
  71 // nul characters.
  72 WebSocketMaskingKey GenerateNonNulMaskingKey() { return kNonNulMaskingKey; }
  73
  74 // Base class for WebSocketBasicStream test fixtures.
  75 class WebSocketBasicStreamTest : public ::testing::Test {
  76  protected:
  77   scoped_ptr<WebSocketBasicStream> stream_;
  78   CapturingNetLog net_log_;
  79 };
  80
  81 // A subclass of StaticSocketDataProvider modified to require that all data
  82 // expected to be read or written actually is.
  83 class StrictStaticSocketDataProvider : public StaticSocketDataProvider {
  84  public:
  85   StrictStaticSocketDataProvider(MockRead* reads,
  86                                  size_t reads_count,
  87                                  MockWrite* writes,
  88                                  size_t writes_count,
  89                                  bool strict_mode)
  90       : StaticSocketDataProvider(reads, reads_count, writes, writes_count),
  91         strict_mode_(strict_mode) {}
  92
  93   ~StrictStaticSocketDataProvider() override {
  94     if (strict_mode_) {
  95       EXPECT_EQ(read_count(), read_index());
  96       EXPECT_EQ(write_count(), write_index());
  97     }
  98   }
  99
 100  private:
 101   const bool strict_mode_;
 102 };
 103
 104 // A fixture for tests which only perform normal socket operations.
 105 class WebSocketBasicStreamSocketTest : public WebSocketBasicStreamTest {
 106  protected:
 107   WebSocketBasicStreamSocketTest()
 108       : histograms_("a"),
 109         pool_(1, 1, &histograms_, &factory_),
 110         generator_(&GenerateNulMaskingKey),
 111         expect_all_io_to_complete_(true) {}
 112
 113   virtual ~WebSocketBasicStreamSocketTest() {
 114     // stream_ has a reference to socket_data_ (via MockTCPClientSocket) and so
 115     // should be destroyed first.
 116     stream_.reset();
 117   }
 118
 119   scoped_ptr<ClientSocketHandle> MakeTransportSocket(MockRead reads[],
 120                                                      size_t reads_count,
 121                                                      MockWrite writes[],
 122                                                      size_t writes_count) {
 123     socket_data_.reset(new StrictStaticSocketDataProvider(
 124         reads, reads_count, writes, writes_count, expect_all_io_to_complete_));
 125     socket_data_->set_connect_data(MockConnect(SYNCHRONOUS, OK));
 126     factory_.AddSocketDataProvider(socket_data_.get());
 127
 128     scoped_ptr<ClientSocketHandle> transport_socket(new ClientSocketHandle);
 129     scoped_refptr<MockTransportSocketParams> params;
 130     transport_socket->Init("a",
 131                            params,
 132                            MEDIUM,
 133                            CompletionCallback(),
 134                            &pool_,
 135                            bound_net_log_.bound());
 136     return transport_socket.Pass();
 137   }
 138
 139   void SetHttpReadBuffer(const char* data, size_t size) {
 140     http_read_buffer_ = new GrowableIOBuffer;
 141     http_read_buffer_->SetCapacity(size);
 142     memcpy(http_read_buffer_->data(), data, size);
 143     http_read_buffer_->set_offset(size);
 144   }
 145
 146   void CreateStream(MockRead reads[],
 147                     size_t reads_count,
 148                     MockWrite writes[],
 149                     size_t writes_count) {
 150     stream_ = WebSocketBasicStream::CreateWebSocketBasicStreamForTesting(
 151         MakeTransportSocket(reads, reads_count, writes, writes_count),
 152         http_read_buffer_,
 153         sub_protocol_,
 154         extensions_,
 155         generator_);
 156   }
 157
 158   template <size_t N>
 159   void CreateReadOnly(MockRead (&reads)[N]) {
 160     CreateStream(reads, N, NULL, 0);
 161   }
 162
 163   void CreateNullStream() { CreateStream(NULL, 0, NULL, 0); }
 164
 165   scoped_ptr<SocketDataProvider> socket_data_;
 166   MockClientSocketFactory factory_;
 167   ClientSocketPoolHistograms histograms_;
 168   MockTransportClientSocketPool pool_;
 169   CapturingBoundNetLog(bound_net_log_);
 170   ScopedVector<WebSocketFrame> frames_;
 171   TestCompletionCallback cb_;
 172   scoped_refptr<GrowableIOBuffer> http_read_buffer_;
 173   std::string sub_protocol_;
 174   std::string extensions_;
 175   WebSocketBasicStream::WebSocketMaskingKeyGeneratorFunction generator_;
 176   bool expect_all_io_to_complete_;
 177 };
 178
 179 // A test fixture for the common case of tests that only perform a single read.
 180 class WebSocketBasicStreamSocketSingleReadTest
 181     : public WebSocketBasicStreamSocketTest {
 182  protected:
 183   void CreateRead(const MockRead& read) {
 184     reads_[0] = read;
 185     CreateStream(reads_, 1U, NULL, 0);
 186   }
 187
 188   MockRead reads_[1];
 189 };
 190
 191 // A test fixture for tests that perform chunked reads.
 192 class WebSocketBasicStreamSocketChunkedReadTest
 193     : public WebSocketBasicStreamSocketTest {
 194  protected:
 195   // Specify the behaviour if there aren't enough chunks to use all the data. If
 196   // LAST_FRAME_BIG is specified, then the rest of the data will be
 197   // put in the last chunk. If LAST_FRAME_NOT_BIG is specified, then the last
 198   // frame will be no bigger than the rest of the frames (but it can be smaller,
 199   // if not enough data remains).
 200   enum LastFrameBehaviour {
 201     LAST_FRAME_BIG,
 202     LAST_FRAME_NOT_BIG
 203   };
 204
 205   // Prepares a read from |data| of |data_size|, split into |number_of_chunks|,
 206   // each of |chunk_size| (except that the last chunk may be larger or
 207   // smaller). All reads must be either SYNCHRONOUS or ASYNC (not a mixture),
 208   // and errors cannot be simulated. Once data is exhausted, further reads will
 209   // return 0 (ie. connection closed).
 210   void CreateChunkedRead(IoMode mode,
 211                          const char data[],
 212                          size_t data_size,
 213                          int chunk_size,
 214                          int number_of_chunks,
 215                          LastFrameBehaviour last_frame_behaviour) {
 216     reads_.reset(new MockRead[number_of_chunks]);
 217     const char* start = data;
 218     for (int i = 0; i < number_of_chunks; ++i) {
 219       int len = chunk_size;
 220       const bool is_last_chunk = (i == number_of_chunks - 1);
 221       if ((last_frame_behaviour == LAST_FRAME_BIG && is_last_chunk) ||
 222           static_cast<int>(data + data_size - start) < len) {
 223         len = static_cast<int>(data + data_size - start);
 224       }
 225       reads_[i] = MockRead(mode, start, len);
 226       start += len;
 227     }
 228     CreateStream(reads_.get(), number_of_chunks, NULL, 0);
 229   }
 230
 231   scoped_ptr<MockRead[]> reads_;
 232 };
 233
 234 // Test fixture for write tests.
 235 class WebSocketBasicStreamSocketWriteTest
 236     : public WebSocketBasicStreamSocketTest {
 237  protected:
 238   // All write tests use the same frame, so it is easiest to create it during
 239   // test creation.
 240   virtual void SetUp() override { PrepareWriteFrame(); }
 241
 242   // Creates a WebSocketFrame with a wire format matching kWriteFrame and adds
 243   // it to |frames_|.
 244   void PrepareWriteFrame() {
 245     scoped_ptr<WebSocketFrame> frame(
 246         new WebSocketFrame(WebSocketFrameHeader::kOpCodeText));
 247     const size_t payload_size =
 248         kWriteFrameSize - (WebSocketFrameHeader::kBaseHeaderSize +
 249                            WebSocketFrameHeader::kMaskingKeyLength);
 250     frame->data = new IOBuffer(payload_size);
 251     memcpy(frame->data->data(),
 252            kWriteFrame + kWriteFrameSize - payload_size,
 253            payload_size);
 254     WebSocketFrameHeader& header = frame->header;
 255     header.final = true;
 256     header.masked = true;
 257     header.payload_length = payload_size;
 258     frames_.push_back(frame.release());
 259   }
 260
 261   // Creates a stream that expects the listed writes.
 262   template <size_t N>
 263   void CreateWriteOnly(MockWrite (&writes)[N]) {
 264     CreateStream(NULL, 0, writes, N);
 265   }
 266 };
 267
 268 TEST_F(WebSocketBasicStreamSocketTest, ConstructionWorks) {
 269   CreateNullStream();
 270 }
 271
 272 TEST_F(WebSocketBasicStreamSocketSingleReadTest, SyncReadWorks) {
 273   CreateRead(MockRead(SYNCHRONOUS, kSampleFrame, kSampleFrameSize));
 274   int result = stream_->ReadFrames(&frames_, cb_.callback());
 275   EXPECT_EQ(OK, result);
 276   ASSERT_EQ(1U, frames_.size());
 277   EXPECT_EQ(GG_UINT64_C(6), frames_[0]->header.payload_length);
 278   EXPECT_TRUE(frames_[0]->header.final);
 279 }
 280
 281 TEST_F(WebSocketBasicStreamSocketSingleReadTest, AsyncReadWorks) {
 282   CreateRead(MockRead(ASYNC, kSampleFrame, kSampleFrameSize));
 283   int result = stream_->ReadFrames(&frames_, cb_.callback());
 284   ASSERT_EQ(ERR_IO_PENDING, result);
 285   EXPECT_EQ(OK, cb_.WaitForResult());
 286   ASSERT_EQ(1U, frames_.size());
 287   EXPECT_EQ(GG_UINT64_C(6), frames_[0]->header.payload_length);
 288   // Don't repeat all the tests from SyncReadWorks; just enough to be sure the
 289   // frame was really read.
 290 }
 291
 292 // ReadFrames will not return a frame whose header has not been wholly received.
 293 TEST_F(WebSocketBasicStreamSocketChunkedReadTest, HeaderFragmentedSync) {
 294   CreateChunkedRead(
 295       SYNCHRONOUS, kSampleFrame, kSampleFrameSize, 1, 2, LAST_FRAME_BIG);
 296   int result = stream_->ReadFrames(&frames_, cb_.callback());
 297   EXPECT_EQ(OK, result);
 298   ASSERT_EQ(1U, frames_.size());
 299   EXPECT_EQ(GG_UINT64_C(6), frames_[0]->header.payload_length);
 300 }
 301
 302 // The same behaviour applies to asynchronous reads.
 303 TEST_F(WebSocketBasicStreamSocketChunkedReadTest, HeaderFragmentedAsync) {
 304   CreateChunkedRead(
 305       ASYNC, kSampleFrame, kSampleFrameSize, 1, 2, LAST_FRAME_BIG);
 306   int result = stream_->ReadFrames(&frames_, cb_.callback());
 307   ASSERT_EQ(ERR_IO_PENDING, result);
 308   EXPECT_EQ(OK, cb_.WaitForResult());
 309   ASSERT_EQ(1U, frames_.size());
 310   EXPECT_EQ(GG_UINT64_C(6), frames_[0]->header.payload_length);
 311 }
 312
 313 // If it receives an incomplete header in a synchronous call, then has to wait
 314 // for the rest of the frame, ReadFrames will return ERR_IO_PENDING.
 315 TEST_F(WebSocketBasicStreamSocketTest, HeaderFragmentedSyncAsync) {
 316   MockRead reads[] = {MockRead(SYNCHRONOUS, kSampleFrame, 1),
 317                       MockRead(ASYNC, kSampleFrame + 1, kSampleFrameSize - 1)};
 318   CreateReadOnly(reads);
 319   int result = stream_->ReadFrames(&frames_, cb_.callback());
 320   ASSERT_EQ(ERR_IO_PENDING, result);
 321   EXPECT_EQ(OK, cb_.WaitForResult());
 322   ASSERT_EQ(1U, frames_.size());
 323   EXPECT_EQ(GG_UINT64_C(6), frames_[0]->header.payload_length);
 324 }
 325
 326 // An extended header should also return ERR_IO_PENDING if it is not completely
 327 // received.
 328 TEST_F(WebSocketBasicStreamSocketTest, FragmentedLargeHeader) {
 329   MockRead reads[] = {
 330       MockRead(SYNCHRONOUS, kPartialLargeFrame, kLargeFrameHeaderSize - 1),
 331       MockRead(SYNCHRONOUS, ERR_IO_PENDING)};
 332   CreateReadOnly(reads);
 333   EXPECT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb_.callback()));
 334 }
 335
 336 // A frame that does not arrive in a single read should be broken into separate
 337 // frames.
 338 TEST_F(WebSocketBasicStreamSocketSingleReadTest, LargeFrameFirstChunk) {
 339   CreateRead(MockRead(SYNCHRONOUS, kPartialLargeFrame, kPartialLargeFrameSize));
 340   EXPECT_EQ(OK, stream_->ReadFrames(&frames_, cb_.callback()));
 341   ASSERT_EQ(1U, frames_.size());
 342   EXPECT_FALSE(frames_[0]->header.final);
 343   EXPECT_EQ(kPartialLargeFrameSize - kLargeFrameHeaderSize,
 344             static_cast<size_t>(frames_[0]->header.payload_length));
 345 }
 346
 347 // If only the header of a data frame arrives, we should receive a frame with a
 348 // zero-size payload.
 349 TEST_F(WebSocketBasicStreamSocketSingleReadTest, HeaderOnlyChunk) {
 350   CreateRead(MockRead(SYNCHRONOUS, kPartialLargeFrame, kLargeFrameHeaderSize));
 351
 352   EXPECT_EQ(OK, stream_->ReadFrames(&frames_, cb_.callback()));
 353   ASSERT_EQ(1U, frames_.size());
 354   EXPECT_EQ(NULL, frames_[0]->data.get());
 355   EXPECT_EQ(0U, frames_[0]->header.payload_length);
 356   EXPECT_EQ(WebSocketFrameHeader::kOpCodeText, frames_[0]->header.opcode);
 357 }
 358
 359 // If the header and the body of a data frame arrive seperately, we should see
 360 // them as separate frames.
 361 TEST_F(WebSocketBasicStreamSocketTest, HeaderBodySeparated) {
 362   MockRead reads[] = {
 363       MockRead(SYNCHRONOUS, kPartialLargeFrame, kLargeFrameHeaderSize),
 364       MockRead(ASYNC,
 365                kPartialLargeFrame + kLargeFrameHeaderSize,
 366                kPartialLargeFrameSize - kLargeFrameHeaderSize)};
 367   CreateReadOnly(reads);
 368   EXPECT_EQ(OK, stream_->ReadFrames(&frames_, cb_.callback()));
 369   ASSERT_EQ(1U, frames_.size());
 370   EXPECT_EQ(NULL, frames_[0]->data.get());
 371   EXPECT_EQ(WebSocketFrameHeader::kOpCodeText, frames_[0]->header.opcode);
 372   frames_.clear();
 373   EXPECT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb_.callback()));
 374   EXPECT_EQ(OK, cb_.WaitForResult());
 375   ASSERT_EQ(1U, frames_.size());
 376   EXPECT_EQ(kPartialLargeFrameSize - kLargeFrameHeaderSize,
 377             frames_[0]->header.payload_length);
 378   EXPECT_EQ(WebSocketFrameHeader::kOpCodeContinuation,
 379             frames_[0]->header.opcode);
 380 }
 381
 382 // Every frame has a header with a correct payload_length field.
 383 TEST_F(WebSocketBasicStreamSocketChunkedReadTest, LargeFrameTwoChunks) {
 384   const size_t kChunkSize = 16;
 385   CreateChunkedRead(ASYNC,
 386                     kPartialLargeFrame,
 387                     kPartialLargeFrameSize,
 388                     kChunkSize,
 389                     2,
 390                     LAST_FRAME_NOT_BIG);
 391   TestCompletionCallback cb[2];
 392
 393   ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb[0].callback()));
 394   EXPECT_EQ(OK, cb[0].WaitForResult());
 395   ASSERT_EQ(1U, frames_.size());
 396   EXPECT_EQ(kChunkSize - kLargeFrameHeaderSize,
 397             frames_[0]->header.payload_length);
 398
 399   frames_.clear();
 400   ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb[1].callback()));
 401   EXPECT_EQ(OK, cb[1].WaitForResult());
 402   ASSERT_EQ(1U, frames_.size());
 403   EXPECT_EQ(kChunkSize, frames_[0]->header.payload_length);
 404 }
 405
 406 // Only the final frame of a fragmented message has |final| bit set.
 407 TEST_F(WebSocketBasicStreamSocketChunkedReadTest, OnlyFinalChunkIsFinal) {
 408   static const size_t kFirstChunkSize = 4;
 409   CreateChunkedRead(ASYNC,
 410                     kSampleFrame,
 411                     kSampleFrameSize,
 412                     kFirstChunkSize,
 413                     2,
 414                     LAST_FRAME_BIG);
 415   TestCompletionCallback cb[2];
 416
 417   ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb[0].callback()));
 418   EXPECT_EQ(OK, cb[0].WaitForResult());
 419   ASSERT_EQ(1U, frames_.size());
 420   ASSERT_FALSE(frames_[0]->header.final);
 421
 422   frames_.clear();
 423   ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb[1].callback()));
 424   EXPECT_EQ(OK, cb[1].WaitForResult());
 425   ASSERT_EQ(1U, frames_.size());
 426   ASSERT_TRUE(frames_[0]->header.final);
 427 }
 428
 429 // All frames after the first have their opcode changed to Continuation.
 430 TEST_F(WebSocketBasicStreamSocketChunkedReadTest, ContinuationOpCodeUsed) {
 431   const size_t kFirstChunkSize = 3;
 432   const int kChunkCount = 3;
 433   // The input data is one frame with opcode Text, which arrives in three
 434   // separate chunks.
 435   CreateChunkedRead(ASYNC,
 436                     kSampleFrame,
 437                     kSampleFrameSize,
 438                     kFirstChunkSize,
 439                     kChunkCount,
 440                     LAST_FRAME_BIG);
 441   TestCompletionCallback cb[kChunkCount];
 442
 443   ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb[0].callback()));
 444   EXPECT_EQ(OK, cb[0].WaitForResult());
 445   ASSERT_EQ(1U, frames_.size());
 446   EXPECT_EQ(WebSocketFrameHeader::kOpCodeText, frames_[0]->header.opcode);
 447
 448   // This test uses a loop to verify that the opcode for every frames generated
 449   // after the first is converted to Continuation.
 450   for (int i = 1; i < kChunkCount; ++i) {
 451     frames_.clear();
 452     ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb[i].callback()));
 453     EXPECT_EQ(OK, cb[i].WaitForResult());
 454     ASSERT_EQ(1U, frames_.size());
 455     EXPECT_EQ(WebSocketFrameHeader::kOpCodeContinuation,
 456               frames_[0]->header.opcode);
 457   }
 458 }
 459
 460 // Multiple frames that arrive together should be parsed correctly.
 461 TEST_F(WebSocketBasicStreamSocketSingleReadTest, ThreeFramesTogether) {
 462   CreateRead(MockRead(SYNCHRONOUS, kMultipleFrames, kMultipleFramesSize));
 463
 464   EXPECT_EQ(OK, stream_->ReadFrames(&frames_, cb_.callback()));
 465   ASSERT_EQ(3U, frames_.size());
 466   EXPECT_TRUE(frames_[0]->header.final);
 467   EXPECT_TRUE(frames_[1]->header.final);
 468   EXPECT_TRUE(frames_[2]->header.final);
 469 }
 470
 471 // ERR_CONNECTION_CLOSED must be returned on close.
 472 TEST_F(WebSocketBasicStreamSocketSingleReadTest, SyncClose) {
 473   CreateRead(MockRead(SYNCHRONOUS, "", 0));
 474
 475   EXPECT_EQ(ERR_CONNECTION_CLOSED,
 476             stream_->ReadFrames(&frames_, cb_.callback()));
 477 }
 478
 479 TEST_F(WebSocketBasicStreamSocketSingleReadTest, AsyncClose) {
 480   CreateRead(MockRead(ASYNC, "", 0));
 481
 482   ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb_.callback()));
 483   EXPECT_EQ(ERR_CONNECTION_CLOSED, cb_.WaitForResult());
 484 }
 485
 486 // The result should be the same if the socket returns
 487 // ERR_CONNECTION_CLOSED. This is not expected to happen on an established
 488 // connection; a Read of size 0 is the expected behaviour. The key point of this
 489 // test is to confirm that ReadFrames() behaviour is identical in both cases.
 490 TEST_F(WebSocketBasicStreamSocketSingleReadTest, SyncCloseWithErr) {
 491   CreateRead(MockRead(SYNCHRONOUS, ERR_CONNECTION_CLOSED));
 492
 493   EXPECT_EQ(ERR_CONNECTION_CLOSED,
 494             stream_->ReadFrames(&frames_, cb_.callback()));
 495 }
 496
 497 TEST_F(WebSocketBasicStreamSocketSingleReadTest, AsyncCloseWithErr) {
 498   CreateRead(MockRead(ASYNC, ERR_CONNECTION_CLOSED));
 499
 500   ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb_.callback()));
 501   EXPECT_EQ(ERR_CONNECTION_CLOSED, cb_.WaitForResult());
 502 }
 503
 504 TEST_F(WebSocketBasicStreamSocketSingleReadTest, SyncErrorsPassedThrough) {
 505   // ERR_INSUFFICIENT_RESOURCES here represents an arbitrary error that
 506   // WebSocketBasicStream gives no special handling to.
 507   CreateRead(MockRead(SYNCHRONOUS, ERR_INSUFFICIENT_RESOURCES));
 508
 509   EXPECT_EQ(ERR_INSUFFICIENT_RESOURCES,
 510             stream_->ReadFrames(&frames_, cb_.callback()));
 511 }
 512
 513 TEST_F(WebSocketBasicStreamSocketSingleReadTest, AsyncErrorsPassedThrough) {
 514   CreateRead(MockRead(ASYNC, ERR_INSUFFICIENT_RESOURCES));
 515
 516   ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb_.callback()));
 517   EXPECT_EQ(ERR_INSUFFICIENT_RESOURCES, cb_.WaitForResult());
 518 }
 519
 520 // If we get a frame followed by a close, we should receive them separately.
 521 TEST_F(WebSocketBasicStreamSocketChunkedReadTest, CloseAfterFrame) {
 522   // The chunk size equals the data size, so the second chunk is 0 size, closing
 523   // the connection.
 524   CreateChunkedRead(SYNCHRONOUS,
 525                     kSampleFrame,
 526                     kSampleFrameSize,
 527                     kSampleFrameSize,
 528                     2,
 529                     LAST_FRAME_NOT_BIG);
 530
 531   EXPECT_EQ(OK, stream_->ReadFrames(&frames_, cb_.callback()));
 532   EXPECT_EQ(1U, frames_.size());
 533   frames_.clear();
 534   EXPECT_EQ(ERR_CONNECTION_CLOSED,
 535             stream_->ReadFrames(&frames_, cb_.callback()));
 536 }
 537
 538 // Synchronous close after an async frame header is handled by a different code
 539 // path.
 540 TEST_F(WebSocketBasicStreamSocketTest, AsyncCloseAfterIncompleteHeader) {
 541   MockRead reads[] = {MockRead(ASYNC, kSampleFrame, 1U),
 542                       MockRead(SYNCHRONOUS, "", 0)};
 543   CreateReadOnly(reads);
 544
 545   ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb_.callback()));
 546   EXPECT_EQ(ERR_CONNECTION_CLOSED, cb_.WaitForResult());
 547 }
 548
 549 // When Stream::Read returns ERR_CONNECTION_CLOSED we get the same result via a
 550 // slightly different code path.
 551 TEST_F(WebSocketBasicStreamSocketTest, AsyncErrCloseAfterIncompleteHeader) {
 552   MockRead reads[] = {MockRead(ASYNC, kSampleFrame, 1U),
 553                       MockRead(SYNCHRONOUS, ERR_CONNECTION_CLOSED)};
 554   CreateReadOnly(reads);
 555
 556   ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb_.callback()));
 557   EXPECT_EQ(ERR_CONNECTION_CLOSED, cb_.WaitForResult());
 558 }
 559
 560 // An empty first frame is not ignored.
 561 TEST_F(WebSocketBasicStreamSocketSingleReadTest, EmptyFirstFrame) {
 562   CreateRead(MockRead(SYNCHRONOUS, kEmptyFirstFrame, kEmptyFirstFrameSize));
 563
 564   EXPECT_EQ(OK, stream_->ReadFrames(&frames_, cb_.callback()));
 565   ASSERT_EQ(1U, frames_.size());
 566   EXPECT_EQ(NULL, frames_[0]->data.get());
 567   EXPECT_EQ(0U, frames_[0]->header.payload_length);
 568 }
 569
 570 // An empty frame in the middle of a message is ignored.
 571 TEST_F(WebSocketBasicStreamSocketTest, EmptyMiddleFrame) {
 572   MockRead reads[] = {
 573       MockRead(SYNCHRONOUS, kEmptyFirstFrame, kEmptyFirstFrameSize),
 574       MockRead(SYNCHRONOUS, kEmptyMiddleFrame, kEmptyMiddleFrameSize),
 575       MockRead(SYNCHRONOUS, ERR_IO_PENDING)};
 576   CreateReadOnly(reads);
 577
 578   EXPECT_EQ(OK, stream_->ReadFrames(&frames_, cb_.callback()));
 579   EXPECT_EQ(1U, frames_.size());
 580   frames_.clear();
 581   EXPECT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb_.callback()));
 582 }
 583
 584 // An empty frame in the middle of a message that arrives separately is still
 585 // ignored.
 586 TEST_F(WebSocketBasicStreamSocketTest, EmptyMiddleFrameAsync) {
 587   MockRead reads[] = {
 588       MockRead(SYNCHRONOUS, kEmptyFirstFrame, kEmptyFirstFrameSize),
 589       MockRead(ASYNC, kEmptyMiddleFrame, kEmptyMiddleFrameSize),
 590       // We include a pong message to verify the middle frame was actually
 591       // processed.
 592       MockRead(ASYNC, kValidPong, kValidPongSize)};
 593   CreateReadOnly(reads);
 594
 595   EXPECT_EQ(OK, stream_->ReadFrames(&frames_, cb_.callback()));
 596   EXPECT_EQ(1U, frames_.size());
 597   frames_.clear();
 598   ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb_.callback()));
 599   EXPECT_EQ(OK, cb_.WaitForResult());
 600   ASSERT_EQ(1U, frames_.size());
 601   EXPECT_EQ(WebSocketFrameHeader::kOpCodePong, frames_[0]->header.opcode);
 602 }
 603
 604 // An empty final frame is not ignored.
 605 TEST_F(WebSocketBasicStreamSocketSingleReadTest, EmptyFinalFrame) {
 606   CreateRead(
 607       MockRead(SYNCHRONOUS, kEmptyFinalTextFrame, kEmptyFinalTextFrameSize));
 608
 609   EXPECT_EQ(OK, stream_->ReadFrames(&frames_, cb_.callback()));
 610   ASSERT_EQ(1U, frames_.size());
 611   EXPECT_EQ(NULL, frames_[0]->data.get());
 612   EXPECT_EQ(0U, frames_[0]->header.payload_length);
 613 }
 614
 615 // An empty middle frame is ignored with a final frame present.
 616 TEST_F(WebSocketBasicStreamSocketTest, ThreeFrameEmptyMessage) {
 617   MockRead reads[] = {
 618       MockRead(SYNCHRONOUS, kEmptyFirstFrame, kEmptyFirstFrameSize),
 619       MockRead(SYNCHRONOUS, kEmptyMiddleFrame, kEmptyMiddleFrameSize),
 620       MockRead(SYNCHRONOUS,
 621                kEmptyFinalContinuationFrame,
 622                kEmptyFinalContinuationFrameSize)};
 623   CreateReadOnly(reads);
 624
 625   EXPECT_EQ(OK, stream_->ReadFrames(&frames_, cb_.callback()));
 626   ASSERT_EQ(1U, frames_.size());
 627   EXPECT_EQ(WebSocketFrameHeader::kOpCodeText, frames_[0]->header.opcode);
 628   frames_.clear();
 629   EXPECT_EQ(OK, stream_->ReadFrames(&frames_, cb_.callback()));
 630   ASSERT_EQ(1U, frames_.size());
 631   EXPECT_TRUE(frames_[0]->header.final);
 632 }
 633
 634 // If there was a frame read at the same time as the response headers (and the
 635 // handshake succeeded), then we should parse it.
 636 TEST_F(WebSocketBasicStreamSocketTest, HttpReadBufferIsUsed) {
 637   SetHttpReadBuffer(kSampleFrame, kSampleFrameSize);
 638   CreateNullStream();
 639
 640   EXPECT_EQ(OK, stream_->ReadFrames(&frames_, cb_.callback()));
 641   ASSERT_EQ(1U, frames_.size());
 642   ASSERT_TRUE(frames_[0]->data.get());
 643   EXPECT_EQ(GG_UINT64_C(6), frames_[0]->header.payload_length);
 644 }
 645
 646 // Check that a frame whose header partially arrived at the end of the response
 647 // headers works correctly.
 648 TEST_F(WebSocketBasicStreamSocketSingleReadTest,
 649        PartialFrameHeaderInHttpResponse) {
 650   SetHttpReadBuffer(kSampleFrame, 1);
 651   CreateRead(MockRead(ASYNC, kSampleFrame + 1, kSampleFrameSize - 1));
 652
 653   ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb_.callback()));
 654   EXPECT_EQ(OK, cb_.WaitForResult());
 655   ASSERT_EQ(1U, frames_.size());
 656   ASSERT_TRUE(frames_[0]->data.get());
 657   EXPECT_EQ(GG_UINT64_C(6), frames_[0]->header.payload_length);
 658   EXPECT_EQ(WebSocketFrameHeader::kOpCodeText, frames_[0]->header.opcode);
 659 }
 660
 661 // Check that a control frame which partially arrives at the end of the response
 662 // headers works correctly.
 663 TEST_F(WebSocketBasicStreamSocketSingleReadTest,
 664        PartialControlFrameInHttpResponse) {
 665   const size_t kPartialFrameBytes = 3;
 666   SetHttpReadBuffer(kCloseFrame, kPartialFrameBytes);
 667   CreateRead(MockRead(ASYNC,
 668                       kCloseFrame + kPartialFrameBytes,
 669                       kCloseFrameSize - kPartialFrameBytes));
 670
 671   ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb_.callback()));
 672   EXPECT_EQ(OK, cb_.WaitForResult());
 673   ASSERT_EQ(1U, frames_.size());
 674   EXPECT_EQ(WebSocketFrameHeader::kOpCodeClose, frames_[0]->header.opcode);
 675   EXPECT_EQ(kCloseFrameSize - 2, frames_[0]->header.payload_length);
 676   EXPECT_EQ(
 677       0,
 678       memcmp(frames_[0]->data->data(), kCloseFrame + 2, kCloseFrameSize - 2));
 679 }
 680
 681 // Check that a control frame which partially arrives at the end of the response
 682 // headers works correctly. Synchronous version (unlikely in practice).
 683 TEST_F(WebSocketBasicStreamSocketSingleReadTest,
 684        PartialControlFrameInHttpResponseSync) {
 685   const size_t kPartialFrameBytes = 3;
 686   SetHttpReadBuffer(kCloseFrame, kPartialFrameBytes);
 687   CreateRead(MockRead(SYNCHRONOUS,
 688                       kCloseFrame + kPartialFrameBytes,
 689                       kCloseFrameSize - kPartialFrameBytes));
 690
 691   EXPECT_EQ(OK, stream_->ReadFrames(&frames_, cb_.callback()));
 692   ASSERT_EQ(1U, frames_.size());
 693   EXPECT_EQ(WebSocketFrameHeader::kOpCodeClose, frames_[0]->header.opcode);
 694 }
 695
 696 // Check that an invalid frame results in an error.
 697 TEST_F(WebSocketBasicStreamSocketSingleReadTest, SyncInvalidFrame) {
 698   CreateRead(MockRead(SYNCHRONOUS, kInvalidFrame, kInvalidFrameSize));
 699
 700   EXPECT_EQ(ERR_WS_PROTOCOL_ERROR,
 701             stream_->ReadFrames(&frames_, cb_.callback()));
 702 }
 703
 704 TEST_F(WebSocketBasicStreamSocketSingleReadTest, AsyncInvalidFrame) {
 705   CreateRead(MockRead(ASYNC, kInvalidFrame, kInvalidFrameSize));
 706
 707   ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb_.callback()));
 708   EXPECT_EQ(ERR_WS_PROTOCOL_ERROR, cb_.WaitForResult());
 709 }
 710
 711 // A control frame without a FIN flag is invalid and should not be passed
 712 // through to higher layers. RFC6455 5.5 "All control frames ... MUST NOT be
 713 // fragmented."
 714 TEST_F(WebSocketBasicStreamSocketSingleReadTest, ControlFrameWithoutFin) {
 715   CreateRead(
 716       MockRead(SYNCHRONOUS, kPingFrameWithoutFin, kPingFrameWithoutFinSize));
 717
 718   EXPECT_EQ(ERR_WS_PROTOCOL_ERROR,
 719             stream_->ReadFrames(&frames_, cb_.callback()));
 720   EXPECT_TRUE(frames_.empty());
 721 }
 722
 723 // A control frame over 125 characters is invalid. RFC6455 5.5 "All control
 724 // frames MUST have a payload length of 125 bytes or less". Since we use a
 725 // 125-byte buffer to assemble fragmented control frames, we need to detect this
 726 // error before attempting to assemble the fragments.
 727 TEST_F(WebSocketBasicStreamSocketSingleReadTest, OverlongControlFrame) {
 728   CreateRead(MockRead(SYNCHRONOUS, k126BytePong, k126BytePongSize));
 729
 730   EXPECT_EQ(ERR_WS_PROTOCOL_ERROR,
 731             stream_->ReadFrames(&frames_, cb_.callback()));
 732   EXPECT_TRUE(frames_.empty());
 733 }
 734
 735 // A control frame over 125 characters should still be rejected if it is split
 736 // into multiple chunks.
 737 TEST_F(WebSocketBasicStreamSocketChunkedReadTest, SplitOverlongControlFrame) {
 738   const size_t kFirstChunkSize = 16;
 739   expect_all_io_to_complete_ = false;
 740   CreateChunkedRead(SYNCHRONOUS,
 741                     k126BytePong,
 742                     k126BytePongSize,
 743                     kFirstChunkSize,
 744                     2,
 745                     LAST_FRAME_BIG);
 746
 747   EXPECT_EQ(ERR_WS_PROTOCOL_ERROR,
 748             stream_->ReadFrames(&frames_, cb_.callback()));
 749   EXPECT_TRUE(frames_.empty());
 750 }
 751
 752 TEST_F(WebSocketBasicStreamSocketChunkedReadTest,
 753        AsyncSplitOverlongControlFrame) {
 754   const size_t kFirstChunkSize = 16;
 755   expect_all_io_to_complete_ = false;
 756   CreateChunkedRead(ASYNC,
 757                     k126BytePong,
 758                     k126BytePongSize,
 759                     kFirstChunkSize,
 760                     2,
 761                     LAST_FRAME_BIG);
 762
 763   ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb_.callback()));
 764   EXPECT_EQ(ERR_WS_PROTOCOL_ERROR, cb_.WaitForResult());
 765   // The caller should not call ReadFrames() again after receiving an error
 766   // other than ERR_IO_PENDING.
 767   EXPECT_TRUE(frames_.empty());
 768 }
 769
 770 // In the synchronous case, ReadFrames assembles the whole control frame before
 771 // returning.
 772 TEST_F(WebSocketBasicStreamSocketChunkedReadTest, SyncControlFrameAssembly) {
 773   const size_t kChunkSize = 3;
 774   CreateChunkedRead(
 775       SYNCHRONOUS, kCloseFrame, kCloseFrameSize, kChunkSize, 3, LAST_FRAME_BIG);
 776
 777   EXPECT_EQ(OK, stream_->ReadFrames(&frames_, cb_.callback()));
 778   ASSERT_EQ(1U, frames_.size());
 779   EXPECT_EQ(WebSocketFrameHeader::kOpCodeClose, frames_[0]->header.opcode);
 780 }
 781
 782 // In the asynchronous case, the callback is not called until the control frame
 783 // has been completely assembled.
 784 TEST_F(WebSocketBasicStreamSocketChunkedReadTest, AsyncControlFrameAssembly) {
 785   const size_t kChunkSize = 3;
 786   CreateChunkedRead(
 787       ASYNC, kCloseFrame, kCloseFrameSize, kChunkSize, 3, LAST_FRAME_BIG);
 788
 789   ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb_.callback()));
 790   EXPECT_EQ(OK, cb_.WaitForResult());
 791   ASSERT_EQ(1U, frames_.size());
 792   EXPECT_EQ(WebSocketFrameHeader::kOpCodeClose, frames_[0]->header.opcode);
 793 }
 794
 795 // A frame with a 1MB payload that has to be read in chunks.
 796 TEST_F(WebSocketBasicStreamSocketChunkedReadTest, OneMegFrame) {
 797   // This should be equal to the definition of kReadBufferSize in
 798   // websocket_basic_stream.cc.
 799   const int kReadBufferSize = 32 * 1024;
 800   const uint64 kPayloadSize = 1 << 20;
 801   const size_t kWireSize = kPayloadSize + kLargeFrameHeaderSize;
 802   const size_t kExpectedFrameCount =
 803       (kWireSize + kReadBufferSize - 1) / kReadBufferSize;
 804   scoped_ptr<char[]> big_frame(new char[kWireSize]);
 805   memcpy(big_frame.get(), "\x81\x7F", 2);
 806   base::WriteBigEndian(big_frame.get() + 2, kPayloadSize);
 807   memset(big_frame.get() + kLargeFrameHeaderSize, 'A', kPayloadSize);
 808
 809   CreateChunkedRead(ASYNC,
 810                     big_frame.get(),
 811                     kWireSize,
 812                     kReadBufferSize,
 813                     kExpectedFrameCount,
 814                     LAST_FRAME_BIG);
 815
 816   for (size_t frame = 0; frame < kExpectedFrameCount; ++frame) {
 817     frames_.clear();
 818     ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb_.callback()));
 819     EXPECT_EQ(OK, cb_.WaitForResult());
 820     ASSERT_EQ(1U, frames_.size());
 821     size_t expected_payload_size = kReadBufferSize;
 822     if (frame == 0) {
 823       expected_payload_size = kReadBufferSize - kLargeFrameHeaderSize;
 824     } else if (frame == kExpectedFrameCount - 1) {
 825       expected_payload_size = kLargeFrameHeaderSize;
 826     }
 827     EXPECT_EQ(expected_payload_size, frames_[0]->header.payload_length);
 828   }
 829 }
 830
 831 // A frame with reserved flag(s) set that arrives in chunks should only have the
 832 // reserved flag(s) set on the first chunk when split.
 833 TEST_F(WebSocketBasicStreamSocketChunkedReadTest, ReservedFlagCleared) {
 834   static const char kReservedFlagFrame[] = "\x41\x05Hello";
 835   const size_t kReservedFlagFrameSize = arraysize(kReservedFlagFrame) - 1;
 836   const size_t kChunkSize = 5;
 837
 838   CreateChunkedRead(ASYNC,
 839                     kReservedFlagFrame,
 840                     kReservedFlagFrameSize,
 841                     kChunkSize,
 842                     2,
 843                     LAST_FRAME_BIG);
 844
 845   TestCompletionCallback cb[2];
 846   ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb[0].callback()));
 847   EXPECT_EQ(OK, cb[0].WaitForResult());
 848   ASSERT_EQ(1U, frames_.size());
 849   EXPECT_TRUE(frames_[0]->header.reserved1);
 850
 851   frames_.clear();
 852   ASSERT_EQ(ERR_IO_PENDING, stream_->ReadFrames(&frames_, cb[1].callback()));
 853   EXPECT_EQ(OK, cb[1].WaitForResult());
 854   ASSERT_EQ(1U, frames_.size());
 855   EXPECT_FALSE(frames_[0]->header.reserved1);
 856 }
 857
 858 // Check that writing a frame all at once works.
 859 TEST_F(WebSocketBasicStreamSocketWriteTest, WriteAtOnce) {
 860   MockWrite writes[] = {MockWrite(SYNCHRONOUS, kWriteFrame, kWriteFrameSize)};
 861   CreateWriteOnly(writes);
 862
 863   EXPECT_EQ(OK, stream_->WriteFrames(&frames_, cb_.callback()));
 864 }
 865
 866 // Check that completely async writing works.
 867 TEST_F(WebSocketBasicStreamSocketWriteTest, AsyncWriteAtOnce) {
 868   MockWrite writes[] = {MockWrite(ASYNC, kWriteFrame, kWriteFrameSize)};
 869   CreateWriteOnly(writes);
 870
 871   ASSERT_EQ(ERR_IO_PENDING, stream_->WriteFrames(&frames_, cb_.callback()));
 872   EXPECT_EQ(OK, cb_.WaitForResult());
 873 }
 874
 875 // Check that writing a frame to an extremely full kernel buffer (so that it
 876 // ends up being sent in bits) works. The WriteFrames() callback should not be
 877 // called until all parts have been written.
 878 TEST_F(WebSocketBasicStreamSocketWriteTest, WriteInBits) {
 879   MockWrite writes[] = {MockWrite(SYNCHRONOUS, kWriteFrame, 4),
 880                         MockWrite(ASYNC, kWriteFrame + 4, 4),
 881                         MockWrite(ASYNC, kWriteFrame + 8, kWriteFrameSize - 8)};
 882   CreateWriteOnly(writes);
 883
 884   ASSERT_EQ(ERR_IO_PENDING, stream_->WriteFrames(&frames_, cb_.callback()));
 885   EXPECT_EQ(OK, cb_.WaitForResult());
 886 }
 887
 888 // Check that writing a Pong frame with a NULL body works.
 889 TEST_F(WebSocketBasicStreamSocketWriteTest, WriteNullPong) {
 890   MockWrite writes[] = {
 891       MockWrite(SYNCHRONOUS, kMaskedEmptyPong, kMaskedEmptyPongSize)};
 892   CreateWriteOnly(writes);
 893
 894   scoped_ptr<WebSocketFrame> frame(
 895       new WebSocketFrame(WebSocketFrameHeader::kOpCodePong));
 896   WebSocketFrameHeader& header = frame->header;
 897   header.final = true;
 898   header.masked = true;
 899   header.payload_length = 0;
 900   ScopedVector<WebSocketFrame> frames;
 901   frames.push_back(frame.release());
 902   EXPECT_EQ(OK, stream_->WriteFrames(&frames, cb_.callback()));
 903 }
 904
 905 // Check that writing with a non-NULL mask works correctly.
 906 TEST_F(WebSocketBasicStreamSocketTest, WriteNonNulMask) {
 907   std::string masked_frame = std::string("\x81\x88");
 908   masked_frame += std::string(kNonNulMaskingKey.key, 4);
 909   masked_frame += "jiggered";
 910   MockWrite writes[] = {
 911       MockWrite(SYNCHRONOUS, masked_frame.data(), masked_frame.size())};
 912   generator_ = &GenerateNonNulMaskingKey;
 913   CreateStream(NULL, 0, writes, arraysize(writes));
 914
 915   scoped_ptr<WebSocketFrame> frame(
 916       new WebSocketFrame(WebSocketFrameHeader::kOpCodeText));
 917   const std::string unmasked_payload = "graphics";
 918   const size_t payload_size = unmasked_payload.size();
 919   frame->data = new IOBuffer(payload_size);
 920   memcpy(frame->data->data(), unmasked_payload.data(), payload_size);
 921   WebSocketFrameHeader& header = frame->header;
 922   header.final = true;
 923   header.masked = true;
 924   header.payload_length = payload_size;
 925   frames_.push_back(frame.release());
 926
 927   EXPECT_EQ(OK, stream_->WriteFrames(&frames_, cb_.callback()));
 928 }
 929
 930 TEST_F(WebSocketBasicStreamSocketTest, GetExtensionsWorks) {
 931   extensions_ = "inflate-uuencode";
 932   CreateNullStream();
 933
 934   EXPECT_EQ("inflate-uuencode", stream_->GetExtensions());
 935 }
 936
 937 TEST_F(WebSocketBasicStreamSocketTest, GetSubProtocolWorks) {
 938   sub_protocol_ = "cyberchat";
 939   CreateNullStream();
 940
 941   EXPECT_EQ("cyberchat", stream_->GetSubProtocol());
 942 }
 943
 944 }  // namespace
 945 }  // namespace net