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      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/http/http_stream_parser.h"
      6 
      7 #include <algorithm>
      8 #include <string>
      9 #include <vector>
     10 
     11 #include "base/file_util.h"
     12 #include "base/files/file_path.h"
     13 #include "base/files/scoped_temp_dir.h"
     14 #include "base/memory/ref_counted.h"
     15 #include "base/run_loop.h"
     16 #include "base/strings/string_piece.h"
     17 #include "base/strings/stringprintf.h"
     18 #include "net/base/io_buffer.h"
     19 #include "net/base/net_errors.h"
     20 #include "net/base/test_completion_callback.h"
     21 #include "net/base/upload_bytes_element_reader.h"
     22 #include "net/base/upload_data_stream.h"
     23 #include "net/base/upload_file_element_reader.h"
     24 #include "net/http/http_request_headers.h"
     25 #include "net/http/http_request_info.h"
     26 #include "net/http/http_response_headers.h"
     27 #include "net/http/http_response_info.h"
     28 #include "net/socket/client_socket_handle.h"
     29 #include "net/socket/socket_test_util.h"
     30 #include "testing/gtest/include/gtest/gtest.h"
     31 #include "url/gurl.h"
     32 
     33 namespace net {
     34 
     35 namespace {
     36 
     37 const size_t kOutputSize = 1024;  // Just large enough for this test.
     38 // The number of bytes that can fit in a buffer of kOutputSize.
     39 const size_t kMaxPayloadSize =
     40     kOutputSize - HttpStreamParser::kChunkHeaderFooterSize;
     41 
     42 // The empty payload is how the last chunk is encoded.
     43 TEST(HttpStreamParser, EncodeChunk_EmptyPayload) {
     44   char output[kOutputSize];
     45 
     46   const base::StringPiece kPayload = "";
     47   const base::StringPiece kExpected = "0\r\n\r\n";
     48   const int num_bytes_written =
     49       HttpStreamParser::EncodeChunk(kPayload, output, sizeof(output));
     50   ASSERT_EQ(kExpected.size(), static_cast<size_t>(num_bytes_written));
     51   EXPECT_EQ(kExpected, base::StringPiece(output, num_bytes_written));
     52 }
     53 
     54 TEST(HttpStreamParser, EncodeChunk_ShortPayload) {
     55   char output[kOutputSize];
     56 
     57   const std::string kPayload("foo\x00\x11\x22", 6);
     58   // 11 = payload size + sizeof("6") + CRLF x 2.
     59   const std::string kExpected("6\r\nfoo\x00\x11\x22\r\n", 11);
     60   const int num_bytes_written =
     61       HttpStreamParser::EncodeChunk(kPayload, output, sizeof(output));
     62   ASSERT_EQ(kExpected.size(), static_cast<size_t>(num_bytes_written));
     63   EXPECT_EQ(kExpected, base::StringPiece(output, num_bytes_written));
     64 }
     65 
     66 TEST(HttpStreamParser, EncodeChunk_LargePayload) {
     67   char output[kOutputSize];
     68 
     69   const std::string kPayload(1000, '\xff');  // '\xff' x 1000.
     70   // 3E8 = 1000 in hex.
     71   const std::string kExpected = "3E8\r\n" + kPayload + "\r\n";
     72   const int num_bytes_written =
     73       HttpStreamParser::EncodeChunk(kPayload, output, sizeof(output));
     74   ASSERT_EQ(kExpected.size(), static_cast<size_t>(num_bytes_written));
     75   EXPECT_EQ(kExpected, base::StringPiece(output, num_bytes_written));
     76 }
     77 
     78 TEST(HttpStreamParser, EncodeChunk_FullPayload) {
     79   char output[kOutputSize];
     80 
     81   const std::string kPayload(kMaxPayloadSize, '\xff');
     82   // 3F4 = 1012 in hex.
     83   const std::string kExpected = "3F4\r\n" + kPayload + "\r\n";
     84   const int num_bytes_written =
     85       HttpStreamParser::EncodeChunk(kPayload, output, sizeof(output));
     86   ASSERT_EQ(kExpected.size(), static_cast<size_t>(num_bytes_written));
     87   EXPECT_EQ(kExpected, base::StringPiece(output, num_bytes_written));
     88 }
     89 
     90 TEST(HttpStreamParser, EncodeChunk_TooLargePayload) {
     91   char output[kOutputSize];
     92 
     93   // The payload is one byte larger the output buffer size.
     94   const std::string kPayload(kMaxPayloadSize + 1, '\xff');
     95   const int num_bytes_written =
     96       HttpStreamParser::EncodeChunk(kPayload, output, sizeof(output));
     97   ASSERT_EQ(ERR_INVALID_ARGUMENT, num_bytes_written);
     98 }
     99 
    100 TEST(HttpStreamParser, ShouldMergeRequestHeadersAndBody_NoBody) {
    101   // Shouldn't be merged if upload data is non-existent.
    102   ASSERT_FALSE(HttpStreamParser::ShouldMergeRequestHeadersAndBody(
    103       "some header", NULL));
    104 }
    105 
    106 TEST(HttpStreamParser, ShouldMergeRequestHeadersAndBody_EmptyBody) {
    107   ScopedVector<UploadElementReader> element_readers;
    108   scoped_ptr<UploadDataStream> body(
    109       new UploadDataStream(element_readers.Pass(), 0));
    110   ASSERT_EQ(OK, body->Init(CompletionCallback()));
    111   // Shouldn't be merged if upload data is empty.
    112   ASSERT_FALSE(HttpStreamParser::ShouldMergeRequestHeadersAndBody(
    113       "some header", body.get()));
    114 }
    115 
    116 TEST(HttpStreamParser, ShouldMergeRequestHeadersAndBody_ChunkedBody) {
    117   const std::string payload = "123";
    118   scoped_ptr<UploadDataStream> body(
    119       new UploadDataStream(UploadDataStream::CHUNKED, 0));
    120   body->AppendChunk(payload.data(), payload.size(), true);
    121   ASSERT_EQ(OK, body->Init(CompletionCallback()));
    122   // Shouldn't be merged if upload data carries chunked data.
    123   ASSERT_FALSE(HttpStreamParser::ShouldMergeRequestHeadersAndBody(
    124       "some header", body.get()));
    125 }
    126 
    127 TEST(HttpStreamParser, ShouldMergeRequestHeadersAndBody_FileBody) {
    128   {
    129     ScopedVector<UploadElementReader> element_readers;
    130 
    131     // Create an empty temporary file.
    132     base::ScopedTempDir temp_dir;
    133     ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
    134     base::FilePath temp_file_path;
    135     ASSERT_TRUE(base::CreateTemporaryFileInDir(temp_dir.path(),
    136                                                &temp_file_path));
    137 
    138     element_readers.push_back(
    139         new UploadFileElementReader(base::MessageLoopProxy::current().get(),
    140                                     temp_file_path,
    141                                     0,
    142                                     0,
    143                                     base::Time()));
    144 
    145     scoped_ptr<UploadDataStream> body(
    146         new UploadDataStream(element_readers.Pass(), 0));
    147     TestCompletionCallback callback;
    148     ASSERT_EQ(ERR_IO_PENDING, body->Init(callback.callback()));
    149     ASSERT_EQ(OK, callback.WaitForResult());
    150     // Shouldn't be merged if upload data carries a file, as it's not in-memory.
    151     ASSERT_FALSE(HttpStreamParser::ShouldMergeRequestHeadersAndBody(
    152         "some header", body.get()));
    153   }
    154   // UploadFileElementReaders may post clean-up tasks on destruction.
    155   base::RunLoop().RunUntilIdle();
    156 }
    157 
    158 TEST(HttpStreamParser, ShouldMergeRequestHeadersAndBody_SmallBodyInMemory) {
    159   ScopedVector<UploadElementReader> element_readers;
    160   const std::string payload = "123";
    161   element_readers.push_back(new UploadBytesElementReader(
    162       payload.data(), payload.size()));
    163 
    164   scoped_ptr<UploadDataStream> body(
    165       new UploadDataStream(element_readers.Pass(), 0));
    166   ASSERT_EQ(OK, body->Init(CompletionCallback()));
    167   // Yes, should be merged if the in-memory body is small here.
    168   ASSERT_TRUE(HttpStreamParser::ShouldMergeRequestHeadersAndBody(
    169       "some header", body.get()));
    170 }
    171 
    172 TEST(HttpStreamParser, ShouldMergeRequestHeadersAndBody_LargeBodyInMemory) {
    173   ScopedVector<UploadElementReader> element_readers;
    174   const std::string payload(10000, 'a');  // 'a' x 10000.
    175   element_readers.push_back(new UploadBytesElementReader(
    176       payload.data(), payload.size()));
    177 
    178   scoped_ptr<UploadDataStream> body(
    179       new UploadDataStream(element_readers.Pass(), 0));
    180   ASSERT_EQ(OK, body->Init(CompletionCallback()));
    181   // Shouldn't be merged if the in-memory body is large here.
    182   ASSERT_FALSE(HttpStreamParser::ShouldMergeRequestHeadersAndBody(
    183       "some header", body.get()));
    184 }
    185 
    186 // Test to ensure the HttpStreamParser state machine does not get confused
    187 // when sending a request with a chunked body, where chunks become available
    188 // asynchronously, over a socket where writes may also complete
    189 // asynchronously.
    190 // This is a regression test for http://crbug.com/132243
    191 TEST(HttpStreamParser, AsyncChunkAndAsyncSocket) {
    192   // The chunks that will be written in the request, as reflected in the
    193   // MockWrites below.
    194   static const char kChunk1[] = "Chunk 1";
    195   static const char kChunk2[] = "Chunky 2";
    196   static const char kChunk3[] = "Test 3";
    197 
    198   MockWrite writes[] = {
    199     MockWrite(ASYNC, 0,
    200               "GET /one.html HTTP/1.1\r\n"
    201               "Host: localhost\r\n"
    202               "Transfer-Encoding: chunked\r\n"
    203               "Connection: keep-alive\r\n\r\n"),
    204     MockWrite(ASYNC, 1, "7\r\nChunk 1\r\n"),
    205     MockWrite(ASYNC, 2, "8\r\nChunky 2\r\n"),
    206     MockWrite(ASYNC, 3, "6\r\nTest 3\r\n"),
    207     MockWrite(ASYNC, 4, "0\r\n\r\n"),
    208   };
    209 
    210   // The size of the response body, as reflected in the Content-Length of the
    211   // MockRead below.
    212   static const int kBodySize = 8;
    213 
    214   MockRead reads[] = {
    215     MockRead(ASYNC, 5, "HTTP/1.1 200 OK\r\n"),
    216     MockRead(ASYNC, 6, "Content-Length: 8\r\n\r\n"),
    217     MockRead(ASYNC, 7, "one.html"),
    218     MockRead(SYNCHRONOUS, 0, 8),  // EOF
    219   };
    220 
    221   UploadDataStream upload_stream(UploadDataStream::CHUNKED, 0);
    222   upload_stream.AppendChunk(kChunk1, arraysize(kChunk1) - 1, false);
    223   ASSERT_EQ(OK, upload_stream.Init(CompletionCallback()));
    224 
    225   DeterministicSocketData data(reads, arraysize(reads),
    226                                writes, arraysize(writes));
    227   data.set_connect_data(MockConnect(SYNCHRONOUS, OK));
    228 
    229   scoped_ptr<DeterministicMockTCPClientSocket> transport(
    230       new DeterministicMockTCPClientSocket(NULL, &data));
    231   data.set_delegate(transport->AsWeakPtr());
    232 
    233   TestCompletionCallback callback;
    234   int rv = transport->Connect(callback.callback());
    235   rv = callback.GetResult(rv);
    236   ASSERT_EQ(OK, rv);
    237 
    238   scoped_ptr<ClientSocketHandle> socket_handle(new ClientSocketHandle);
    239   socket_handle->SetSocket(transport.PassAs<StreamSocket>());
    240 
    241   HttpRequestInfo request_info;
    242   request_info.method = "GET";
    243   request_info.url = GURL("http://localhost");
    244   request_info.load_flags = LOAD_NORMAL;
    245   request_info.upload_data_stream = &upload_stream;
    246 
    247   scoped_refptr<GrowableIOBuffer> read_buffer(new GrowableIOBuffer);
    248   HttpStreamParser parser(
    249       socket_handle.get(), &request_info, read_buffer.get(), BoundNetLog());
    250 
    251   HttpRequestHeaders request_headers;
    252   request_headers.SetHeader("Host", "localhost");
    253   request_headers.SetHeader("Transfer-Encoding", "chunked");
    254   request_headers.SetHeader("Connection", "keep-alive");
    255 
    256   HttpResponseInfo response_info;
    257   // This will attempt to Write() the initial request and headers, which will
    258   // complete asynchronously.
    259   rv = parser.SendRequest("GET /one.html HTTP/1.1\r\n", request_headers,
    260                           &response_info, callback.callback());
    261   ASSERT_EQ(ERR_IO_PENDING, rv);
    262 
    263   // Complete the initial request write. Additionally, this should enqueue the
    264   // first chunk.
    265   data.RunFor(1);
    266   ASSERT_FALSE(callback.have_result());
    267 
    268   // Now append another chunk (while the first write is still pending), which
    269   // should not confuse the state machine.
    270   upload_stream.AppendChunk(kChunk2, arraysize(kChunk2) - 1, false);
    271   ASSERT_FALSE(callback.have_result());
    272 
    273   // Complete writing the first chunk, which should then enqueue the second
    274   // chunk for writing and return, because it is set to complete
    275   // asynchronously.
    276   data.RunFor(1);
    277   ASSERT_FALSE(callback.have_result());
    278 
    279   // Complete writing the second chunk. However, because no chunks are
    280   // available yet, no further writes should be called until a new chunk is
    281   // added.
    282   data.RunFor(1);
    283   ASSERT_FALSE(callback.have_result());
    284 
    285   // Add the final chunk. This will enqueue another write, but it will not
    286   // complete due to the async nature.
    287   upload_stream.AppendChunk(kChunk3, arraysize(kChunk3) - 1, true);
    288   ASSERT_FALSE(callback.have_result());
    289 
    290   // Finalize writing the last chunk, which will enqueue the trailer.
    291   data.RunFor(1);
    292   ASSERT_FALSE(callback.have_result());
    293 
    294   // Finalize writing the trailer.
    295   data.RunFor(1);
    296   ASSERT_TRUE(callback.have_result());
    297 
    298   // Warning: This will hang if the callback doesn't already have a result,
    299   // due to the deterministic socket provider. Do not remove the above
    300   // ASSERT_TRUE, which will avoid this hang.
    301   rv = callback.WaitForResult();
    302   ASSERT_EQ(OK, rv);
    303 
    304   // Attempt to read the response status and the response headers.
    305   rv = parser.ReadResponseHeaders(callback.callback());
    306   ASSERT_EQ(ERR_IO_PENDING, rv);
    307   data.RunFor(2);
    308 
    309   ASSERT_TRUE(callback.have_result());
    310   rv = callback.WaitForResult();
    311   ASSERT_GT(rv, 0);
    312 
    313   // Finally, attempt to read the response body.
    314   scoped_refptr<IOBuffer> body_buffer(new IOBuffer(kBodySize));
    315   rv = parser.ReadResponseBody(
    316       body_buffer.get(), kBodySize, callback.callback());
    317   ASSERT_EQ(ERR_IO_PENDING, rv);
    318   data.RunFor(1);
    319 
    320   ASSERT_TRUE(callback.have_result());
    321   rv = callback.WaitForResult();
    322   ASSERT_EQ(kBodySize, rv);
    323 }
    324 
    325 TEST(HttpStreamParser, TruncatedHeaders) {
    326   MockRead truncated_status_reads[] = {
    327     MockRead(SYNCHRONOUS, 1, "HTTP/1.1 20"),
    328     MockRead(SYNCHRONOUS, 0, 2),  // EOF
    329   };
    330 
    331   MockRead truncated_after_status_reads[] = {
    332     MockRead(SYNCHRONOUS, 1, "HTTP/1.1 200 Ok\r\n"),
    333     MockRead(SYNCHRONOUS, 0, 2),  // EOF
    334   };
    335 
    336   MockRead truncated_in_header_reads[] = {
    337     MockRead(SYNCHRONOUS, 1, "HTTP/1.1 200 Ok\r\nHead"),
    338     MockRead(SYNCHRONOUS, 0, 2),  // EOF
    339   };
    340 
    341   MockRead truncated_after_header_reads[] = {
    342     MockRead(SYNCHRONOUS, 1, "HTTP/1.1 200 Ok\r\nHeader: foo\r\n"),
    343     MockRead(SYNCHRONOUS, 0, 2),  // EOF
    344   };
    345 
    346   MockRead truncated_after_final_newline_reads[] = {
    347     MockRead(SYNCHRONOUS, 1, "HTTP/1.1 200 Ok\r\nHeader: foo\r\n\r"),
    348     MockRead(SYNCHRONOUS, 0, 2),  // EOF
    349   };
    350 
    351   MockRead not_truncated_reads[] = {
    352     MockRead(SYNCHRONOUS, 1, "HTTP/1.1 200 Ok\r\nHeader: foo\r\n\r\n"),
    353     MockRead(SYNCHRONOUS, 0, 2),  // EOF
    354   };
    355 
    356   MockRead* reads[] = {
    357     truncated_status_reads,
    358     truncated_after_status_reads,
    359     truncated_in_header_reads,
    360     truncated_after_header_reads,
    361     truncated_after_final_newline_reads,
    362     not_truncated_reads,
    363   };
    364 
    365   MockWrite writes[] = {
    366     MockWrite(SYNCHRONOUS, 0, "GET / HTTP/1.1\r\n\r\n"),
    367   };
    368 
    369   enum {
    370     HTTP = 0,
    371     HTTPS,
    372     NUM_PROTOCOLS,
    373   };
    374 
    375   for (size_t protocol = 0; protocol < NUM_PROTOCOLS; protocol++) {
    376     SCOPED_TRACE(protocol);
    377 
    378     for (size_t i = 0; i < arraysize(reads); i++) {
    379       SCOPED_TRACE(i);
    380       DeterministicSocketData data(reads[i], 2, writes, arraysize(writes));
    381       data.set_connect_data(MockConnect(SYNCHRONOUS, OK));
    382       data.SetStop(3);
    383 
    384       scoped_ptr<DeterministicMockTCPClientSocket> transport(
    385           new DeterministicMockTCPClientSocket(NULL, &data));
    386       data.set_delegate(transport->AsWeakPtr());
    387 
    388       TestCompletionCallback callback;
    389       int rv = transport->Connect(callback.callback());
    390       rv = callback.GetResult(rv);
    391       ASSERT_EQ(OK, rv);
    392 
    393       scoped_ptr<ClientSocketHandle> socket_handle(new ClientSocketHandle);
    394       socket_handle->SetSocket(transport.PassAs<StreamSocket>());
    395 
    396       HttpRequestInfo request_info;
    397       request_info.method = "GET";
    398       if (protocol == HTTP) {
    399         request_info.url = GURL("http://localhost");
    400       } else {
    401         request_info.url = GURL("https://localhost");
    402       }
    403       request_info.load_flags = LOAD_NORMAL;
    404 
    405       scoped_refptr<GrowableIOBuffer> read_buffer(new GrowableIOBuffer);
    406       HttpStreamParser parser(
    407           socket_handle.get(), &request_info, read_buffer.get(), BoundNetLog());
    408 
    409       HttpRequestHeaders request_headers;
    410       HttpResponseInfo response_info;
    411       rv = parser.SendRequest("GET / HTTP/1.1\r\n", request_headers,
    412                               &response_info, callback.callback());
    413       ASSERT_EQ(OK, rv);
    414 
    415       rv = parser.ReadResponseHeaders(callback.callback());
    416       if (i == arraysize(reads) - 1) {
    417         EXPECT_EQ(OK, rv);
    418         EXPECT_TRUE(response_info.headers.get());
    419       } else {
    420         if (protocol == HTTP) {
    421           EXPECT_EQ(ERR_CONNECTION_CLOSED, rv);
    422           EXPECT_TRUE(response_info.headers.get());
    423         } else {
    424           EXPECT_EQ(ERR_RESPONSE_HEADERS_TRUNCATED, rv);
    425           EXPECT_FALSE(response_info.headers.get());
    426         }
    427       }
    428     }
    429   }
    430 }
    431 
    432 // Confirm that on 101 response, the headers are parsed but the data that
    433 // follows remains in the buffer.
    434 TEST(HttpStreamParser, Websocket101Response) {
    435   MockRead reads[] = {
    436     MockRead(SYNCHRONOUS, 1,
    437              "HTTP/1.1 101 Switching Protocols\r\n"
    438              "Upgrade: websocket\r\n"
    439              "Connection: Upgrade\r\n"
    440              "\r\n"
    441              "a fake websocket frame"),
    442   };
    443 
    444   MockWrite writes[] = {
    445     MockWrite(SYNCHRONOUS, 0, "GET / HTTP/1.1\r\n\r\n"),
    446   };
    447 
    448   DeterministicSocketData data(reads, arraysize(reads),
    449                                writes, arraysize(writes));
    450   data.set_connect_data(MockConnect(SYNCHRONOUS, OK));
    451   data.SetStop(2);
    452 
    453   scoped_ptr<DeterministicMockTCPClientSocket> transport(
    454       new DeterministicMockTCPClientSocket(NULL, &data));
    455   data.set_delegate(transport->AsWeakPtr());
    456 
    457   TestCompletionCallback callback;
    458   int rv = transport->Connect(callback.callback());
    459   rv = callback.GetResult(rv);
    460   ASSERT_EQ(OK, rv);
    461 
    462   scoped_ptr<ClientSocketHandle> socket_handle(new ClientSocketHandle);
    463   socket_handle->SetSocket(transport.PassAs<StreamSocket>());
    464 
    465   HttpRequestInfo request_info;
    466   request_info.method = "GET";
    467   request_info.url = GURL("http://localhost");
    468   request_info.load_flags = LOAD_NORMAL;
    469 
    470   scoped_refptr<GrowableIOBuffer> read_buffer(new GrowableIOBuffer);
    471   HttpStreamParser parser(
    472       socket_handle.get(), &request_info, read_buffer.get(), BoundNetLog());
    473 
    474   HttpRequestHeaders request_headers;
    475   HttpResponseInfo response_info;
    476   rv = parser.SendRequest("GET / HTTP/1.1\r\n", request_headers,
    477                           &response_info, callback.callback());
    478   ASSERT_EQ(OK, rv);
    479 
    480   rv = parser.ReadResponseHeaders(callback.callback());
    481   EXPECT_EQ(OK, rv);
    482   ASSERT_TRUE(response_info.headers.get());
    483   EXPECT_EQ(101, response_info.headers->response_code());
    484   EXPECT_TRUE(response_info.headers->HasHeaderValue("Connection", "Upgrade"));
    485   EXPECT_TRUE(response_info.headers->HasHeaderValue("Upgrade", "websocket"));
    486   EXPECT_EQ(read_buffer->capacity(), read_buffer->offset());
    487   EXPECT_EQ("a fake websocket frame",
    488             base::StringPiece(read_buffer->StartOfBuffer(),
    489                               read_buffer->capacity()));
    490 }
    491 
    492 // Helper class for constructing HttpStreamParser and running GET requests.
    493 class SimpleGetRunner {
    494  public:
    495   SimpleGetRunner() : read_buffer_(new GrowableIOBuffer), sequence_number_(0) {
    496     writes_.push_back(MockWrite(
    497         SYNCHRONOUS, sequence_number_++, "GET / HTTP/1.1\r\n\r\n"));
    498   }
    499 
    500   HttpStreamParser* parser() { return parser_.get(); }
    501   GrowableIOBuffer* read_buffer() { return read_buffer_.get(); }
    502   HttpResponseInfo* response_info() { return &response_info_; }
    503 
    504   void AddInitialData(const std::string& data) {
    505     int offset = read_buffer_->offset();
    506     int size = data.size();
    507     read_buffer_->SetCapacity(offset + size);
    508     memcpy(read_buffer_->StartOfBuffer() + offset, data.data(), size);
    509     read_buffer_->set_offset(offset + size);
    510   }
    511 
    512   void AddRead(const std::string& data) {
    513     reads_.push_back(MockRead(SYNCHRONOUS, sequence_number_++, data.data()));
    514   }
    515 
    516   void SetupParserAndSendRequest() {
    517     reads_.push_back(MockRead(SYNCHRONOUS, 0, sequence_number_++));  // EOF
    518 
    519     socket_handle_.reset(new ClientSocketHandle);
    520     data_.reset(new DeterministicSocketData(
    521         &reads_.front(), reads_.size(), &writes_.front(), writes_.size()));
    522     data_->set_connect_data(MockConnect(SYNCHRONOUS, OK));
    523     data_->SetStop(reads_.size() + writes_.size());
    524 
    525     transport_.reset(new DeterministicMockTCPClientSocket(NULL, data_.get()));
    526     data_->set_delegate(transport_->AsWeakPtr());
    527 
    528     TestCompletionCallback callback;
    529     int rv = transport_->Connect(callback.callback());
    530     rv = callback.GetResult(rv);
    531     ASSERT_EQ(OK, rv);
    532 
    533     socket_handle_->SetSocket(transport_.PassAs<StreamSocket>());
    534 
    535     request_info_.method = "GET";
    536     request_info_.url = GURL("http://localhost");
    537     request_info_.load_flags = LOAD_NORMAL;
    538 
    539     parser_.reset(new HttpStreamParser(
    540         socket_handle_.get(), &request_info_, read_buffer(), BoundNetLog()));
    541 
    542     rv = parser_->SendRequest("GET / HTTP/1.1\r\n", request_headers_,
    543                               &response_info_, callback.callback());
    544     ASSERT_EQ(OK, rv);
    545   }
    546 
    547   void ReadHeaders() {
    548     TestCompletionCallback callback;
    549     EXPECT_EQ(OK, parser_->ReadResponseHeaders(callback.callback()));
    550   }
    551 
    552   void ReadBody(int user_buf_len, int* read_lengths) {
    553     TestCompletionCallback callback;
    554     scoped_refptr<IOBuffer> buffer = new IOBuffer(user_buf_len);
    555     int rv;
    556     int i = 0;
    557     while (true) {
    558       rv = parser_->ReadResponseBody(buffer, user_buf_len, callback.callback());
    559       EXPECT_EQ(read_lengths[i], rv);
    560       i++;
    561       if (rv <= 0)
    562         return;
    563     }
    564   }
    565 
    566  private:
    567   HttpRequestHeaders request_headers_;
    568   HttpResponseInfo response_info_;
    569   HttpRequestInfo request_info_;
    570   scoped_refptr<GrowableIOBuffer> read_buffer_;
    571   std::vector<MockRead> reads_;
    572   std::vector<MockWrite> writes_;
    573   scoped_ptr<ClientSocketHandle> socket_handle_;
    574   scoped_ptr<DeterministicSocketData> data_;
    575   scoped_ptr<DeterministicMockTCPClientSocket> transport_;
    576   scoped_ptr<HttpStreamParser> parser_;
    577   int sequence_number_;
    578 };
    579 
    580 // Test that HTTP/0.9 response size is correctly calculated.
    581 TEST(HttpStreamParser, ReceivedBytesNoHeaders) {
    582   std::string response = "hello\r\nworld\r\n";
    583 
    584   SimpleGetRunner get_runner;
    585   get_runner.AddRead(response);
    586   get_runner.SetupParserAndSendRequest();
    587   get_runner.ReadHeaders();
    588   EXPECT_EQ(0, get_runner.parser()->received_bytes());
    589   int response_size = response.size();
    590   int read_lengths[] = {response_size, 0};
    591   get_runner.ReadBody(response_size, read_lengths);
    592   EXPECT_EQ(response_size, get_runner.parser()->received_bytes());
    593 }
    594 
    595 // Test basic case where there is no keep-alive or extra data from the socket,
    596 // and the entire response is received in a single read.
    597 TEST(HttpStreamParser, ReceivedBytesNormal) {
    598   std::string headers = "HTTP/1.1 200 OK\r\n"
    599       "Content-Length: 7\r\n\r\n";
    600   std::string body = "content";
    601   std::string response = headers + body;
    602 
    603   SimpleGetRunner get_runner;
    604   get_runner.AddRead(response);
    605   get_runner.SetupParserAndSendRequest();
    606   get_runner.ReadHeaders();
    607   int64 headers_size = headers.size();
    608   EXPECT_EQ(headers_size, get_runner.parser()->received_bytes());
    609   int body_size = body.size();
    610   int read_lengths[] = {body_size, 0};
    611   get_runner.ReadBody(body_size, read_lengths);
    612   int64 response_size = response.size();
    613   EXPECT_EQ(response_size, get_runner.parser()->received_bytes());
    614 }
    615 
    616 // Test that bytes that represent "next" response are not counted
    617 // as current response "received_bytes".
    618 TEST(HttpStreamParser, ReceivedBytesExcludesNextResponse) {
    619   std::string headers = "HTTP/1.1 200 OK\r\n"
    620       "Content-Length:  8\r\n\r\n";
    621   std::string body = "content8";
    622   std::string response = headers + body;
    623   std::string next_response = "HTTP/1.1 200 OK\r\n\r\nFOO";
    624   std::string data = response + next_response;
    625 
    626   SimpleGetRunner get_runner;
    627   get_runner.AddRead(data);
    628   get_runner.SetupParserAndSendRequest();
    629   get_runner.ReadHeaders();
    630   EXPECT_EQ(39, get_runner.parser()->received_bytes());
    631   int64 headers_size = headers.size();
    632   EXPECT_EQ(headers_size, get_runner.parser()->received_bytes());
    633   int body_size = body.size();
    634   int read_lengths[] = {body_size, 0};
    635   get_runner.ReadBody(body_size, read_lengths);
    636   int64 response_size = response.size();
    637   EXPECT_EQ(response_size, get_runner.parser()->received_bytes());
    638   int64 next_response_size = next_response.size();
    639   EXPECT_EQ(next_response_size, get_runner.read_buffer()->offset());
    640 }
    641 
    642 // Test that "received_bytes" calculation works fine when last read
    643 // contains more data than requested by user.
    644 // We send data in two reads:
    645 // 1) Headers + beginning of response
    646 // 2) remaining part of response + next response start
    647 // We setup user read buffer so it fully accepts the beginnig of response
    648 // body, but it is larger that remaining part of body.
    649 TEST(HttpStreamParser, ReceivedBytesMultiReadExcludesNextResponse) {
    650   std::string headers = "HTTP/1.1 200 OK\r\n"
    651       "Content-Length: 36\r\n\r\n";
    652   int64 user_buf_len = 32;
    653   std::string body_start = std::string(user_buf_len, '#');
    654   int body_start_size = body_start.size();
    655   EXPECT_EQ(user_buf_len, body_start_size);
    656   std::string response_start = headers + body_start;
    657   std::string body_end = "abcd";
    658   std::string next_response = "HTTP/1.1 200 OK\r\n\r\nFOO";
    659   std::string response_end = body_end + next_response;
    660 
    661   SimpleGetRunner get_runner;
    662   get_runner.AddRead(response_start);
    663   get_runner.AddRead(response_end);
    664   get_runner.SetupParserAndSendRequest();
    665   get_runner.ReadHeaders();
    666   int64 headers_size = headers.size();
    667   EXPECT_EQ(headers_size, get_runner.parser()->received_bytes());
    668   int body_end_size = body_end.size();
    669   int read_lengths[] = {body_start_size, body_end_size, 0};
    670   get_runner.ReadBody(body_start_size, read_lengths);
    671   int64 response_size = response_start.size() + body_end_size;
    672   EXPECT_EQ(response_size, get_runner.parser()->received_bytes());
    673   int64 next_response_size = next_response.size();
    674   EXPECT_EQ(next_response_size, get_runner.read_buffer()->offset());
    675 }
    676 
    677 // Test that "received_bytes" calculation works fine when there is no
    678 // network activity at all; that is when all data is read from read buffer.
    679 // In this case read buffer contains two responses. We expect that only
    680 // bytes that correspond to the first one are taken into account.
    681 TEST(HttpStreamParser, ReceivedBytesFromReadBufExcludesNextResponse) {
    682   std::string headers = "HTTP/1.1 200 OK\r\n"
    683       "Content-Length: 7\r\n\r\n";
    684   std::string body = "content";
    685   std::string response = headers + body;
    686   std::string next_response = "HTTP/1.1 200 OK\r\n\r\nFOO";
    687   std::string data = response + next_response;
    688 
    689   SimpleGetRunner get_runner;
    690   get_runner.AddInitialData(data);
    691   get_runner.SetupParserAndSendRequest();
    692   get_runner.ReadHeaders();
    693   int64 headers_size = headers.size();
    694   EXPECT_EQ(headers_size, get_runner.parser()->received_bytes());
    695   int body_size = body.size();
    696   int read_lengths[] = {body_size, 0};
    697   get_runner.ReadBody(body_size, read_lengths);
    698   int64 response_size = response.size();
    699   EXPECT_EQ(response_size, get_runner.parser()->received_bytes());
    700   int64 next_response_size = next_response.size();
    701   EXPECT_EQ(next_response_size, get_runner.read_buffer()->offset());
    702 }
    703 
    704 // Test calculating "received_bytes" when part of request has been already
    705 // loaded and placed to read buffer by previous stream parser.
    706 TEST(HttpStreamParser, ReceivedBytesUseReadBuf) {
    707   std::string buffer = "HTTP/1.1 200 OK\r\n";
    708   std::string remaining_headers = "Content-Length: 7\r\n\r\n";
    709   int64 headers_size = buffer.size() + remaining_headers.size();
    710   std::string body = "content";
    711   std::string response = remaining_headers + body;
    712 
    713   SimpleGetRunner get_runner;
    714   get_runner.AddInitialData(buffer);
    715   get_runner.AddRead(response);
    716   get_runner.SetupParserAndSendRequest();
    717   get_runner.ReadHeaders();
    718   EXPECT_EQ(headers_size, get_runner.parser()->received_bytes());
    719   int body_size = body.size();
    720   int read_lengths[] = {body_size, 0};
    721   get_runner.ReadBody(body_size, read_lengths);
    722   EXPECT_EQ(headers_size + body_size, get_runner.parser()->received_bytes());
    723   EXPECT_EQ(0, get_runner.read_buffer()->offset());
    724 }
    725 
    726 // Test the case when the resulting read_buf contains both unused bytes and
    727 // bytes ejected by chunked-encoding filter.
    728 TEST(HttpStreamParser, ReceivedBytesChunkedTransferExcludesNextResponse) {
    729   std::string response = "HTTP/1.1 200 OK\r\n"
    730       "Transfer-Encoding: chunked\r\n\r\n"
    731       "7\r\nChunk 1\r\n"
    732       "8\r\nChunky 2\r\n"
    733       "6\r\nTest 3\r\n"
    734       "0\r\n\r\n";
    735   std::string next_response = "foo bar\r\n";
    736   std::string data = response + next_response;
    737 
    738   SimpleGetRunner get_runner;
    739   get_runner.AddInitialData(data);
    740   get_runner.SetupParserAndSendRequest();
    741   get_runner.ReadHeaders();
    742   int read_lengths[] = {4, 3, 6, 2, 6, 0};
    743   get_runner.ReadBody(7, read_lengths);
    744   int64 response_size = response.size();
    745   EXPECT_EQ(response_size, get_runner.parser()->received_bytes());
    746   int64 next_response_size = next_response.size();
    747   EXPECT_EQ(next_response_size, get_runner.read_buffer()->offset());
    748 }
    749 
    750 // Test that data transfered in multiple reads is correctly processed.
    751 // We feed data into 4-bytes reads. Also we set length of read
    752 // buffer to 5-bytes to test all possible buffer misaligments.
    753 TEST(HttpStreamParser, ReceivedBytesMultipleReads) {
    754   std::string headers = "HTTP/1.1 200 OK\r\n"
    755       "Content-Length: 33\r\n\r\n";
    756   std::string body = "foo bar baz\r\n"
    757       "sputnik mir babushka";
    758   std::string response = headers + body;
    759 
    760   size_t receive_length = 4;
    761   std::vector<std::string> blocks;
    762   for (size_t i = 0; i < response.size(); i += receive_length) {
    763     size_t length = std::min(receive_length, response.size() - i);
    764     blocks.push_back(response.substr(i, length));
    765   }
    766 
    767   SimpleGetRunner get_runner;
    768   for (std::vector<std::string>::size_type i = 0; i < blocks.size(); ++i)
    769     get_runner.AddRead(blocks[i]);
    770   get_runner.SetupParserAndSendRequest();
    771   get_runner.ReadHeaders();
    772   int64 headers_size = headers.size();
    773   EXPECT_EQ(headers_size, get_runner.parser()->received_bytes());
    774   int read_lengths[] = {1, 4, 4, 4, 4, 4, 4, 4, 4, 0};
    775   get_runner.ReadBody(receive_length + 1, read_lengths);
    776   int64 response_size = response.size();
    777   EXPECT_EQ(response_size, get_runner.parser()->received_bytes());
    778 }
    779 
    780 // Test that "continue" HTTP header is counted as "received_bytes".
    781 TEST(HttpStreamParser, ReceivedBytesIncludesContinueHeader) {
    782   std::string status100 = "HTTP/1.1 100 OK\r\n\r\n";
    783   std::string headers = "HTTP/1.1 200 OK\r\n"
    784       "Content-Length: 7\r\n\r\n";
    785   int64 headers_size = status100.size() + headers.size();
    786   std::string body = "content";
    787   std::string response = headers + body;
    788 
    789   SimpleGetRunner get_runner;
    790   get_runner.AddRead(status100);
    791   get_runner.AddRead(response);
    792   get_runner.SetupParserAndSendRequest();
    793   get_runner.ReadHeaders();
    794   EXPECT_EQ(100, get_runner.response_info()->headers->response_code());
    795   int64 status100_size = status100.size();
    796   EXPECT_EQ(status100_size, get_runner.parser()->received_bytes());
    797   get_runner.ReadHeaders();
    798   EXPECT_EQ(200, get_runner.response_info()->headers->response_code());
    799   EXPECT_EQ(headers_size, get_runner.parser()->received_bytes());
    800   int64 response_size = headers_size + body.size();
    801   int body_size = body.size();
    802   int read_lengths[] = {body_size, 0};
    803   get_runner.ReadBody(body_size, read_lengths);
    804   EXPECT_EQ(response_size, get_runner.parser()->received_bytes());
    805 }
    806 
    807 }  // namespace
    808 
    809 }  // namespace net
    810