net/http/http_network_transaction_unittest.cc

// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "net/http/http_network_transaction.h"

#include <math.h>  // ceil
#include <vector>

#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/file_path.h"
#include "base/file_util.h"
#include "base/memory/scoped_ptr.h"
#include "base/utf_string_conversions.h"
#include "net/base/auth.h"
#include "net/base/capturing_net_log.h"
#include "net/base/completion_callback.h"
#include "net/base/mock_host_resolver.h"
#include "net/base/net_log.h"
#include "net/base/net_log_unittest.h"
#include "net/base/request_priority.h"
#include "net/base/ssl_cert_request_info.h"
#include "net/base/ssl_config_service_defaults.h"
#include "net/base/ssl_info.h"
#include "net/base/test_completion_callback.h"
#include "net/base/upload_data.h"
#include "net/http/http_auth_handler_digest.h"
#include "net/http/http_auth_handler_mock.h"
#include "net/http/http_auth_handler_ntlm.h"
#include "net/http/http_basic_stream.h"
#include "net/http/http_net_log_params.h"
#include "net/http/http_network_session.h"
#include "net/http/http_network_session_peer.h"
#include "net/http/http_stream.h"
#include "net/http/http_stream_factory.h"
#include "net/http/http_transaction_unittest.h"
#include "net/proxy/proxy_config_service_fixed.h"
#include "net/proxy/proxy_resolver.h"
#include "net/proxy/proxy_service.h"
#include "net/socket/client_socket_factory.h"
#include "net/socket/socket_test_util.h"
#include "net/socket/ssl_client_socket.h"
#include "net/spdy/spdy_framer.h"
#include "net/spdy/spdy_session.h"
#include "net/spdy/spdy_session_pool.h"
#include "net/spdy/spdy_test_util.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/platform_test.h"

//-----------------------------------------------------------------------------

namespace {

const string16 kBar(ASCIIToUTF16("bar"));
const string16 kBar2(ASCIIToUTF16("bar2"));
const string16 kBar3(ASCIIToUTF16("bar3"));
const string16 kBaz(ASCIIToUTF16("baz"));
const string16 kFirst(ASCIIToUTF16("first"));
const string16 kFoo(ASCIIToUTF16("foo"));
const string16 kFoo2(ASCIIToUTF16("foo2"));
const string16 kFoo3(ASCIIToUTF16("foo3"));
const string16 kFou(ASCIIToUTF16("fou"));
const string16 kSecond(ASCIIToUTF16("second"));
const string16 kTestingNTLM(ASCIIToUTF16("testing-ntlm"));
const string16 kWrongPassword(ASCIIToUTF16("wrongpassword"));

}  // namespace

namespace net {

// Helper to manage the lifetimes of the dependencies for a
// HttpNetworkTransaction.
struct SessionDependencies {
  // Default set of dependencies -- "null" proxy service.
  SessionDependencies()
      : host_resolver(new MockHostResolver),
        cert_verifier(new CertVerifier),
        proxy_service(ProxyService::CreateDirect()),
        ssl_config_service(new SSLConfigServiceDefaults),
        http_auth_handler_factory(
            HttpAuthHandlerFactory::CreateDefault(host_resolver.get())),
        net_log(NULL) {}

  // Custom proxy service dependency.
  explicit SessionDependencies(ProxyService* proxy_service)
      : host_resolver(new MockHostResolver),
        cert_verifier(new CertVerifier),
        proxy_service(proxy_service),
        ssl_config_service(new SSLConfigServiceDefaults),
        http_auth_handler_factory(
            HttpAuthHandlerFactory::CreateDefault(host_resolver.get())),
        net_log(NULL) {}

  scoped_ptr<MockHostResolverBase> host_resolver;
  scoped_ptr<CertVerifier> cert_verifier;
  scoped_ptr<ProxyService> proxy_service;
  scoped_refptr<SSLConfigService> ssl_config_service;
  MockClientSocketFactory socket_factory;
  scoped_ptr<HttpAuthHandlerFactory> http_auth_handler_factory;
  NetLog* net_log;
};

HttpNetworkSession* CreateSession(SessionDependencies* session_deps) {
  net::HttpNetworkSession::Params params;
  params.client_socket_factory = &session_deps->socket_factory;
  params.host_resolver = session_deps->host_resolver.get();
  params.cert_verifier = session_deps->cert_verifier.get();
  params.proxy_service = session_deps->proxy_service.get();
  params.ssl_config_service = session_deps->ssl_config_service;
  params.http_auth_handler_factory =
      session_deps->http_auth_handler_factory.get();
  params.net_log = session_deps->net_log;
  return new HttpNetworkSession(params);
}

class HttpNetworkTransactionTest : public PlatformTest {
 public:
  virtual void SetUp() {
    NetworkChangeNotifier::NotifyObserversOfIPAddressChangeForTests();
    MessageLoop::current()->RunAllPending();
    spdy::SpdyFramer::set_enable_compression_default(false);
  }

  virtual void TearDown() {
    NetworkChangeNotifier::NotifyObserversOfIPAddressChangeForTests();
    MessageLoop::current()->RunAllPending();
    spdy::SpdyFramer::set_enable_compression_default(true);
    // Empty the current queue.
    MessageLoop::current()->RunAllPending();
    PlatformTest::TearDown();
    NetworkChangeNotifier::NotifyObserversOfIPAddressChangeForTests();
    MessageLoop::current()->RunAllPending();
  }

 protected:
  void KeepAliveConnectionResendRequestTest(const MockRead& read_failure);

  struct SimpleGetHelperResult {
    int rv;
    std::string status_line;
    std::string response_data;
  };

  SimpleGetHelperResult SimpleGetHelper(MockRead data_reads[],
                                        size_t reads_count) {
    SimpleGetHelperResult out;

    HttpRequestInfo request;
    request.method = "GET";
    request.url = GURL("http://www.google.com/");
    request.load_flags = 0;

    SessionDependencies session_deps;
    scoped_ptr<HttpTransaction> trans(
        new HttpNetworkTransaction(CreateSession(&session_deps)));

    StaticSocketDataProvider data(data_reads, reads_count, NULL, 0);
    session_deps.socket_factory.AddSocketDataProvider(&data);

    TestCompletionCallback callback;

    CapturingBoundNetLog log(CapturingNetLog::kUnbounded);
    EXPECT_TRUE(log.bound().IsLoggingAllEvents());
    int rv = trans->Start(&request, &callback, log.bound());
    EXPECT_EQ(ERR_IO_PENDING, rv);

    out.rv = callback.WaitForResult();
    if (out.rv != OK)
      return out;

    const HttpResponseInfo* response = trans->GetResponseInfo();
    EXPECT_TRUE(response != NULL);

    EXPECT_TRUE(response->headers != NULL);
    out.status_line = response->headers->GetStatusLine();

    EXPECT_EQ("192.0.2.33", response->socket_address.host());
    EXPECT_EQ(0, response->socket_address.port());

    rv = ReadTransaction(trans.get(), &out.response_data);
    EXPECT_EQ(OK, rv);

    net::CapturingNetLog::EntryList entries;
    log.GetEntries(&entries);
    size_t pos = ExpectLogContainsSomewhere(
        entries, 0, NetLog::TYPE_HTTP_TRANSACTION_SEND_REQUEST_HEADERS,
        NetLog::PHASE_NONE);
    ExpectLogContainsSomewhere(
        entries, pos,
        NetLog::TYPE_HTTP_TRANSACTION_READ_RESPONSE_HEADERS,
        NetLog::PHASE_NONE);

    CapturingNetLog::Entry entry = entries[pos];
    NetLogHttpRequestParameter* request_params =
        static_cast<NetLogHttpRequestParameter*>(entry.extra_parameters.get());
    EXPECT_EQ("GET / HTTP/1.1\r\n", request_params->GetLine());
    EXPECT_EQ("Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n",
              request_params->GetHeaders().ToString());

    return out;
  }

  void ConnectStatusHelperWithExpectedStatus(const MockRead& status,
                                             int expected_status);

  void ConnectStatusHelper(const MockRead& status);
};

// Fill |str| with a long header list that consumes >= |size| bytes.
void FillLargeHeadersString(std::string* str, int size) {
  const char* row =
      "SomeHeaderName: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\r\n";
  const int sizeof_row = strlen(row);
  const int num_rows = static_cast<int>(
      ceil(static_cast<float>(size) / sizeof_row));
  const int sizeof_data = num_rows * sizeof_row;
  DCHECK(sizeof_data >= size);
  str->reserve(sizeof_data);

  for (int i = 0; i < num_rows; ++i)
    str->append(row, sizeof_row);
}

// Alternative functions that eliminate randomness and dependency on the local
// host name so that the generated NTLM messages are reproducible.
void MockGenerateRandom1(uint8* output, size_t n) {
  static const uint8 bytes[] = {
    0x55, 0x29, 0x66, 0x26, 0x6b, 0x9c, 0x73, 0x54
  };
  static size_t current_byte = 0;
  for (size_t i = 0; i < n; ++i) {
    output[i] = bytes[current_byte++];
    current_byte %= arraysize(bytes);
  }
}

void MockGenerateRandom2(uint8* output, size_t n) {
  static const uint8 bytes[] = {
    0x96, 0x79, 0x85, 0xe7, 0x49, 0x93, 0x70, 0xa1,
    0x4e, 0xe7, 0x87, 0x45, 0x31, 0x5b, 0xd3, 0x1f
  };
  static size_t current_byte = 0;
  for (size_t i = 0; i < n; ++i) {
    output[i] = bytes[current_byte++];
    current_byte %= arraysize(bytes);
  }
}

std::string MockGetHostName() {
  return "WTC-WIN7";
}

template<typename ParentPool>
class CaptureGroupNameSocketPool : public ParentPool {
 public:
  CaptureGroupNameSocketPool(HostResolver* host_resolver,
                             CertVerifier* cert_verifier);

  const std::string last_group_name_received() const {
    return last_group_name_;
  }

  virtual int RequestSocket(const std::string& group_name,
                            const void* socket_params,
                            RequestPriority priority,
                            ClientSocketHandle* handle,
                            CompletionCallback* callback,
                            const BoundNetLog& net_log) {
    last_group_name_ = group_name;
    return ERR_IO_PENDING;
  }
  virtual void CancelRequest(const std::string& group_name,
                             ClientSocketHandle* handle) {}
  virtual void ReleaseSocket(const std::string& group_name,
                             StreamSocket* socket,
                             int id) {}
  virtual void CloseIdleSockets() {}
  virtual int IdleSocketCount() const {
    return 0;
  }
  virtual int IdleSocketCountInGroup(const std::string& group_name) const {
    return 0;
  }
  virtual LoadState GetLoadState(const std::string& group_name,
                                 const ClientSocketHandle* handle) const {
    return LOAD_STATE_IDLE;
  }
  virtual base::TimeDelta ConnectionTimeout() const {
    return base::TimeDelta();
  }

 private:
  std::string last_group_name_;
};

typedef CaptureGroupNameSocketPool<TransportClientSocketPool>
CaptureGroupNameTransportSocketPool;
typedef CaptureGroupNameSocketPool<HttpProxyClientSocketPool>
CaptureGroupNameHttpProxySocketPool;
typedef CaptureGroupNameSocketPool<SOCKSClientSocketPool>
CaptureGroupNameSOCKSSocketPool;
typedef CaptureGroupNameSocketPool<SSLClientSocketPool>
CaptureGroupNameSSLSocketPool;

template<typename ParentPool>
CaptureGroupNameSocketPool<ParentPool>::CaptureGroupNameSocketPool(
    HostResolver* host_resolver,
    CertVerifier* /* cert_verifier */)
    : ParentPool(0, 0, NULL, host_resolver, NULL, NULL) {}

template<>
CaptureGroupNameHttpProxySocketPool::CaptureGroupNameSocketPool(
    HostResolver* host_resolver,
    CertVerifier* /* cert_verifier */)
    : HttpProxyClientSocketPool(0, 0, NULL, host_resolver, NULL, NULL, NULL) {}

template<>
CaptureGroupNameSSLSocketPool::CaptureGroupNameSocketPool(
    HostResolver* host_resolver,
    CertVerifier* cert_verifier)
    : SSLClientSocketPool(0, 0, NULL, host_resolver, cert_verifier, NULL, NULL,
                          NULL, NULL, NULL, NULL, NULL, NULL, NULL) {}

//-----------------------------------------------------------------------------

// This is the expected list of advertised protocols from the browser's NPN
// list.
static const char kExpectedNPNString[] = "\x08http/1.1\x06spdy/2";

// This is the expected return from a current server advertising SPDY.
static const char kAlternateProtocolHttpHeader[] =
    "Alternate-Protocol: 443:npn-spdy/2\r\n\r\n";

TEST_F(HttpNetworkTransactionTest, Basic) {
  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));
}

TEST_F(HttpNetworkTransactionTest, SimpleGET) {
  MockRead data_reads[] = {
    MockRead("HTTP/1.0 200 OK\r\n\r\n"),
    MockRead("hello world"),
    MockRead(false, OK),
  };
  SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                              arraysize(data_reads));
  EXPECT_EQ(OK, out.rv);
  EXPECT_EQ("HTTP/1.0 200 OK", out.status_line);
  EXPECT_EQ("hello world", out.response_data);
}

// Response with no status line.
TEST_F(HttpNetworkTransactionTest, SimpleGETNoHeaders) {
  MockRead data_reads[] = {
    MockRead("hello world"),
    MockRead(false, OK),
  };
  SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                              arraysize(data_reads));
  EXPECT_EQ(OK, out.rv);
  EXPECT_EQ("HTTP/0.9 200 OK", out.status_line);
  EXPECT_EQ("hello world", out.response_data);
}

// Allow up to 4 bytes of junk to precede status line.
TEST_F(HttpNetworkTransactionTest, StatusLineJunk2Bytes) {
  MockRead data_reads[] = {
    MockRead("xxxHTTP/1.0 404 Not Found\nServer: blah\n\nDATA"),
    MockRead(false, OK),
  };
  SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                              arraysize(data_reads));
  EXPECT_EQ(OK, out.rv);
  EXPECT_EQ("HTTP/1.0 404 Not Found", out.status_line);
  EXPECT_EQ("DATA", out.response_data);
}

// Allow up to 4 bytes of junk to precede status line.
TEST_F(HttpNetworkTransactionTest, StatusLineJunk4Bytes) {
  MockRead data_reads[] = {
    MockRead("\n\nQJHTTP/1.0 404 Not Found\nServer: blah\n\nDATA"),
    MockRead(false, OK),
  };
  SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                              arraysize(data_reads));
  EXPECT_EQ(OK, out.rv);
  EXPECT_EQ("HTTP/1.0 404 Not Found", out.status_line);
  EXPECT_EQ("DATA", out.response_data);
}

// Beyond 4 bytes of slop and it should fail to find a status line.
TEST_F(HttpNetworkTransactionTest, StatusLineJunk5Bytes) {
  MockRead data_reads[] = {
    MockRead("xxxxxHTTP/1.1 404 Not Found\nServer: blah"),
    MockRead(false, OK),
  };
  SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                              arraysize(data_reads));
  EXPECT_EQ(OK, out.rv);
  EXPECT_EQ("HTTP/0.9 200 OK", out.status_line);
  EXPECT_EQ("xxxxxHTTP/1.1 404 Not Found\nServer: blah", out.response_data);
}

// Same as StatusLineJunk4Bytes, except the read chunks are smaller.
TEST_F(HttpNetworkTransactionTest, StatusLineJunk4Bytes_Slow) {
  MockRead data_reads[] = {
    MockRead("\n"),
    MockRead("\n"),
    MockRead("Q"),
    MockRead("J"),
    MockRead("HTTP/1.0 404 Not Found\nServer: blah\n\nDATA"),
    MockRead(false, OK),
  };
  SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                              arraysize(data_reads));
  EXPECT_EQ(OK, out.rv);
  EXPECT_EQ("HTTP/1.0 404 Not Found", out.status_line);
  EXPECT_EQ("DATA", out.response_data);
}

// Close the connection before enough bytes to have a status line.
TEST_F(HttpNetworkTransactionTest, StatusLinePartial) {
  MockRead data_reads[] = {
    MockRead("HTT"),
    MockRead(false, OK),
  };
  SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                              arraysize(data_reads));
  EXPECT_EQ(OK, out.rv);
  EXPECT_EQ("HTTP/0.9 200 OK", out.status_line);
  EXPECT_EQ("HTT", out.response_data);
}

// Simulate a 204 response, lacking a Content-Length header, sent over a
// persistent connection.  The response should still terminate since a 204
// cannot have a response body.
TEST_F(HttpNetworkTransactionTest, StopsReading204) {
  MockRead data_reads[] = {
    MockRead("HTTP/1.1 204 No Content\r\n\r\n"),
    MockRead("junk"),  // Should not be read!!
    MockRead(false, OK),
  };
  SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                              arraysize(data_reads));
  EXPECT_EQ(OK, out.rv);
  EXPECT_EQ("HTTP/1.1 204 No Content", out.status_line);
  EXPECT_EQ("", out.response_data);
}

// A simple request using chunked encoding with some extra data after.
// (Like might be seen in a pipelined response.)
TEST_F(HttpNetworkTransactionTest, ChunkedEncoding) {
  MockRead data_reads[] = {
    MockRead("HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n"),
    MockRead("5\r\nHello\r\n"),
    MockRead("1\r\n"),
    MockRead(" \r\n"),
    MockRead("5\r\nworld\r\n"),
    MockRead("0\r\n\r\nHTTP/1.1 200 OK\r\n"),
    MockRead(false, OK),
  };
  SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                              arraysize(data_reads));
  EXPECT_EQ(OK, out.rv);
  EXPECT_EQ("HTTP/1.1 200 OK", out.status_line);
  EXPECT_EQ("Hello world", out.response_data);
}

// Next tests deal with http://crbug.com/56344.

TEST_F(HttpNetworkTransactionTest,
       MultipleContentLengthHeadersNoTransferEncoding) {
  MockRead data_reads[] = {
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead("Content-Length: 10\r\n"),
    MockRead("Content-Length: 5\r\n\r\n"),
  };
  SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                              arraysize(data_reads));
  EXPECT_EQ(ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_LENGTH, out.rv);
}

TEST_F(HttpNetworkTransactionTest,
       DuplicateContentLengthHeadersNoTransferEncoding) {
  MockRead data_reads[] = {
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead("Content-Length: 5\r\n"),
    MockRead("Content-Length: 5\r\n\r\n"),
    MockRead("Hello"),
  };
  SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                              arraysize(data_reads));
  EXPECT_EQ(OK, out.rv);
  EXPECT_EQ("HTTP/1.1 200 OK", out.status_line);
  EXPECT_EQ("Hello", out.response_data);
}

TEST_F(HttpNetworkTransactionTest,
       ComplexContentLengthHeadersNoTransferEncoding) {
  // More than 2 dupes.
  {
    MockRead data_reads[] = {
      MockRead("HTTP/1.1 200 OK\r\n"),
      MockRead("Content-Length: 5\r\n"),
      MockRead("Content-Length: 5\r\n"),
      MockRead("Content-Length: 5\r\n\r\n"),
      MockRead("Hello"),
    };
    SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                                arraysize(data_reads));
    EXPECT_EQ(OK, out.rv);
    EXPECT_EQ("HTTP/1.1 200 OK", out.status_line);
    EXPECT_EQ("Hello", out.response_data);
  }
  // HTTP/1.0
  {
    MockRead data_reads[] = {
      MockRead("HTTP/1.0 200 OK\r\n"),
      MockRead("Content-Length: 5\r\n"),
      MockRead("Content-Length: 5\r\n"),
      MockRead("Content-Length: 5\r\n\r\n"),
      MockRead("Hello"),
    };
    SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                                arraysize(data_reads));
    EXPECT_EQ(OK, out.rv);
    EXPECT_EQ("HTTP/1.0 200 OK", out.status_line);
    EXPECT_EQ("Hello", out.response_data);
  }
  // 2 dupes and one mismatched.
  {
    MockRead data_reads[] = {
      MockRead("HTTP/1.1 200 OK\r\n"),
      MockRead("Content-Length: 10\r\n"),
      MockRead("Content-Length: 10\r\n"),
      MockRead("Content-Length: 5\r\n\r\n"),
    };
    SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                                arraysize(data_reads));
    EXPECT_EQ(ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_LENGTH, out.rv);
  }
}

TEST_F(HttpNetworkTransactionTest,
       MultipleContentLengthHeadersTransferEncoding) {
  MockRead data_reads[] = {
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead("Content-Length: 666\r\n"),
    MockRead("Content-Length: 1337\r\n"),
    MockRead("Transfer-Encoding: chunked\r\n\r\n"),
    MockRead("5\r\nHello\r\n"),
    MockRead("1\r\n"),
    MockRead(" \r\n"),
    MockRead("5\r\nworld\r\n"),
    MockRead("0\r\n\r\nHTTP/1.1 200 OK\r\n"),
    MockRead(false, OK),
  };
  SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                              arraysize(data_reads));
  EXPECT_EQ(OK, out.rv);
  EXPECT_EQ("HTTP/1.1 200 OK", out.status_line);
  EXPECT_EQ("Hello world", out.response_data);
}

// Do a request using the HEAD method. Verify that we don't try to read the
// message body (since HEAD has none).
TEST_F(HttpNetworkTransactionTest, Head) {
  HttpRequestInfo request;
  request.method = "HEAD";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockWrite data_writes1[] = {
    MockWrite("HEAD / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Content-Length: 0\r\n\r\n"),
  };
  MockRead data_reads1[] = {
    MockRead("HTTP/1.1 404 Not Found\r\n"),
    MockRead("Server: Blah\r\n"),
    MockRead("Content-Length: 1234\r\n\r\n"),

    // No response body because the test stops reading here.
    MockRead(false, ERR_UNEXPECTED),  // Should not be reached.
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  session_deps.socket_factory.AddSocketDataProvider(&data1);

  TestCompletionCallback callback1;

  int rv = trans->Start(&request, &callback1, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);

  // Check that the headers got parsed.
  EXPECT_TRUE(response->headers != NULL);
  EXPECT_EQ(1234, response->headers->GetContentLength());
  EXPECT_EQ("HTTP/1.1 404 Not Found", response->headers->GetStatusLine());

  std::string server_header;
  void* iter = NULL;
  bool has_server_header = response->headers->EnumerateHeader(
      &iter, "Server", &server_header);
  EXPECT_TRUE(has_server_header);
  EXPECT_EQ("Blah", server_header);

  // Reading should give EOF right away, since there is no message body
  // (despite non-zero content-length).
  std::string response_data;
  rv = ReadTransaction(trans.get(), &response_data);
  EXPECT_EQ(OK, rv);
  EXPECT_EQ("", response_data);
}

TEST_F(HttpNetworkTransactionTest, ReuseConnection) {
  SessionDependencies session_deps;
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  MockRead data_reads[] = {
    MockRead("HTTP/1.1 200 OK\r\nContent-Length: 5\r\n\r\n"),
    MockRead("hello"),
    MockRead("HTTP/1.1 200 OK\r\nContent-Length: 5\r\n\r\n"),
    MockRead("world"),
    MockRead(false, OK),
  };
  StaticSocketDataProvider data(data_reads, arraysize(data_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data);

  const char* const kExpectedResponseData[] = {
    "hello", "world"
  };

  for (int i = 0; i < 2; ++i) {
    HttpRequestInfo request;
    request.method = "GET";
    request.url = GURL("http://www.google.com/");
    request.load_flags = 0;

    scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

    TestCompletionCallback callback;

    int rv = trans->Start(&request, &callback, BoundNetLog());
    EXPECT_EQ(ERR_IO_PENDING, rv);

    rv = callback.WaitForResult();
    EXPECT_EQ(OK, rv);

    const HttpResponseInfo* response = trans->GetResponseInfo();
    EXPECT_TRUE(response != NULL);

    EXPECT_TRUE(response->headers != NULL);
    EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());

    std::string response_data;
    rv = ReadTransaction(trans.get(), &response_data);
    EXPECT_EQ(OK, rv);
    EXPECT_EQ(kExpectedResponseData[i], response_data);
  }
}

TEST_F(HttpNetworkTransactionTest, Ignores100) {
  HttpRequestInfo request;
  request.method = "POST";
  request.url = GURL("http://www.foo.com/");
  request.upload_data = new UploadData;
  request.upload_data->AppendBytes("foo", 3);
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockRead data_reads[] = {
    MockRead("HTTP/1.0 100 Continue\r\n\r\n"),
    MockRead("HTTP/1.0 200 OK\r\n\r\n"),
    MockRead("hello world"),
    MockRead(false, OK),
  };
  StaticSocketDataProvider data(data_reads, arraysize(data_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_TRUE(response != NULL);

  EXPECT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.0 200 OK", response->headers->GetStatusLine());

  std::string response_data;
  rv = ReadTransaction(trans.get(), &response_data);
  EXPECT_EQ(OK, rv);
  EXPECT_EQ("hello world", response_data);
}

// This test is almost the same as Ignores100 above, but the response contains
// a 102 instead of a 100. Also, instead of HTTP/1.0 the response is
// HTTP/1.1 and the two status headers are read in one read.
TEST_F(HttpNetworkTransactionTest, Ignores1xx) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.foo.com/");
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockRead data_reads[] = {
    MockRead("HTTP/1.1 102 Unspecified status code\r\n\r\n"
             "HTTP/1.1 200 OK\r\n\r\n"),
    MockRead("hello world"),
    MockRead(false, OK),
  };
  StaticSocketDataProvider data(data_reads, arraysize(data_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_TRUE(response != NULL);

  EXPECT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());

  std::string response_data;
  rv = ReadTransaction(trans.get(), &response_data);
  EXPECT_EQ(OK, rv);
  EXPECT_EQ("hello world", response_data);
}

TEST_F(HttpNetworkTransactionTest, Incomplete100ThenEOF) {
  HttpRequestInfo request;
  request.method = "POST";
  request.url = GURL("http://www.foo.com/");
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockRead data_reads[] = {
    MockRead(false, "HTTP/1.0 100 Continue\r\n"),
    MockRead(true, 0),
  };
  StaticSocketDataProvider data(data_reads, arraysize(data_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);

  std::string response_data;
  rv = ReadTransaction(trans.get(), &response_data);
  EXPECT_EQ(OK, rv);
  EXPECT_EQ("", response_data);
}

TEST_F(HttpNetworkTransactionTest, EmptyResponse) {
  HttpRequestInfo request;
  request.method = "POST";
  request.url = GURL("http://www.foo.com/");
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockRead data_reads[] = {
    MockRead(true, 0),
  };
  StaticSocketDataProvider data(data_reads, arraysize(data_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(ERR_EMPTY_RESPONSE, rv);
}

// read_failure specifies a read failure that should cause the network
// transaction to resend the request.
void HttpNetworkTransactionTest::KeepAliveConnectionResendRequestTest(
    const MockRead& read_failure) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.foo.com/");
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  MockRead data1_reads[] = {
    MockRead("HTTP/1.1 200 OK\r\nContent-Length: 5\r\n\r\n"),
    MockRead("hello"),
    read_failure,  // Now, we reuse the connection and fail the first read.
  };
  StaticSocketDataProvider data1(data1_reads, arraysize(data1_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data1);

  MockRead data2_reads[] = {
    MockRead("HTTP/1.1 200 OK\r\nContent-Length: 5\r\n\r\n"),
    MockRead("world"),
    MockRead(true, OK),
  };
  StaticSocketDataProvider data2(data2_reads, arraysize(data2_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data2);

  const char* kExpectedResponseData[] = {
    "hello", "world"
  };

  for (int i = 0; i < 2; ++i) {
    TestCompletionCallback callback;

    scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

    int rv = trans->Start(&request, &callback, BoundNetLog());
    EXPECT_EQ(ERR_IO_PENDING, rv);

    rv = callback.WaitForResult();
    EXPECT_EQ(OK, rv);

    const HttpResponseInfo* response = trans->GetResponseInfo();
    EXPECT_TRUE(response != NULL);

    EXPECT_TRUE(response->headers != NULL);
    EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());

    std::string response_data;
    rv = ReadTransaction(trans.get(), &response_data);
    EXPECT_EQ(OK, rv);
    EXPECT_EQ(kExpectedResponseData[i], response_data);
  }
}

TEST_F(HttpNetworkTransactionTest, KeepAliveConnectionReset) {
  MockRead read_failure(true, ERR_CONNECTION_RESET);
  KeepAliveConnectionResendRequestTest(read_failure);
}

TEST_F(HttpNetworkTransactionTest, KeepAliveConnectionEOF) {
  MockRead read_failure(false, OK);  // EOF
  KeepAliveConnectionResendRequestTest(read_failure);
}

TEST_F(HttpNetworkTransactionTest, NonKeepAliveConnectionReset) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockRead data_reads[] = {
    MockRead(true, ERR_CONNECTION_RESET),
    MockRead("HTTP/1.0 200 OK\r\n\r\n"),  // Should not be used
    MockRead("hello world"),
    MockRead(false, OK),
  };
  StaticSocketDataProvider data(data_reads, arraysize(data_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(ERR_CONNECTION_RESET, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_TRUE(response == NULL);
}

// What do various browsers do when the server closes a non-keepalive
// connection without sending any response header or body?
//
// IE7: error page
// Safari 3.1.2 (Windows): error page
// Firefox 3.0.1: blank page
// Opera 9.52: after five attempts, blank page
// Us with WinHTTP: error page (ERR_INVALID_RESPONSE)
// Us: error page (EMPTY_RESPONSE)
TEST_F(HttpNetworkTransactionTest, NonKeepAliveConnectionEOF) {
  MockRead data_reads[] = {
    MockRead(false, OK),  // EOF
    MockRead("HTTP/1.0 200 OK\r\n\r\n"),  // Should not be used
    MockRead("hello world"),
    MockRead(false, OK),
  };
  SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                              arraysize(data_reads));
  EXPECT_EQ(ERR_EMPTY_RESPONSE, out.rv);
}

// Test that we correctly reuse a keep-alive connection after not explicitly
// reading the body.
TEST_F(HttpNetworkTransactionTest, KeepAliveAfterUnreadBody) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.foo.com/");
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  // Note that because all these reads happen in the same
  // StaticSocketDataProvider, it shows that the same socket is being reused for
  // all transactions.
  MockRead data1_reads[] = {
    MockRead("HTTP/1.1 204 No Content\r\n\r\n"),
    MockRead("HTTP/1.1 205 Reset Content\r\n\r\n"),
    MockRead("HTTP/1.1 304 Not Modified\r\n\r\n"),
    MockRead("HTTP/1.1 302 Found\r\n"
             "Content-Length: 0\r\n\r\n"),
    MockRead("HTTP/1.1 302 Found\r\n"
             "Content-Length: 5\r\n\r\n"
             "hello"),
    MockRead("HTTP/1.1 301 Moved Permanently\r\n"
             "Content-Length: 0\r\n\r\n"),
    MockRead("HTTP/1.1 301 Moved Permanently\r\n"
             "Content-Length: 5\r\n\r\n"
             "hello"),
    MockRead("HTTP/1.1 200 OK\r\nContent-Length: 5\r\n\r\n"),
    MockRead("hello"),
  };
  StaticSocketDataProvider data1(data1_reads, arraysize(data1_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data1);

  MockRead data2_reads[] = {
    MockRead(false, ERR_UNEXPECTED),  // Should not be reached.
  };
  StaticSocketDataProvider data2(data2_reads, arraysize(data2_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data2);

  const int kNumUnreadBodies = arraysize(data1_reads) - 2;
  std::string response_lines[kNumUnreadBodies];

  for (size_t i = 0; i < arraysize(data1_reads) - 2; ++i) {
    TestCompletionCallback callback;

    scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

    int rv = trans->Start(&request, &callback, BoundNetLog());
    EXPECT_EQ(ERR_IO_PENDING, rv);

    rv = callback.WaitForResult();
    EXPECT_EQ(OK, rv);

    const HttpResponseInfo* response = trans->GetResponseInfo();
    ASSERT_TRUE(response != NULL);

    ASSERT_TRUE(response->headers != NULL);
    response_lines[i] = response->headers->GetStatusLine();

    // We intentionally don't read the response bodies.
  }

  const char* const kStatusLines[] = {
    "HTTP/1.1 204 No Content",
    "HTTP/1.1 205 Reset Content",
    "HTTP/1.1 304 Not Modified",
    "HTTP/1.1 302 Found",
    "HTTP/1.1 302 Found",
    "HTTP/1.1 301 Moved Permanently",
    "HTTP/1.1 301 Moved Permanently",
  };

  COMPILE_ASSERT(kNumUnreadBodies == arraysize(kStatusLines),
                 forgot_to_update_kStatusLines);

  for (int i = 0; i < kNumUnreadBodies; ++i)
    EXPECT_EQ(kStatusLines[i], response_lines[i]);

  TestCompletionCallback callback;
  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));
  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());
  std::string response_data;
  rv = ReadTransaction(trans.get(), &response_data);
  EXPECT_EQ(OK, rv);
  EXPECT_EQ("hello", response_data);
}

// Test the request-challenge-retry sequence for basic auth.
// (basic auth is the easiest to mock, because it has no randomness).
TEST_F(HttpNetworkTransactionTest, BasicAuth) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockWrite data_writes1[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads1[] = {
    MockRead("HTTP/1.0 401 Unauthorized\r\n"),
    // Give a couple authenticate options (only the middle one is actually
    // supported).
    MockRead("WWW-Authenticate: Basic invalid\r\n"),  // Malformed.
    MockRead("WWW-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("WWW-Authenticate: UNSUPPORTED realm=\"FOO\"\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    // Large content-length -- won't matter, as connection will be reset.
    MockRead("Content-Length: 10000\r\n\r\n"),
    MockRead(false, ERR_FAILED),
  };

  // After calling trans->RestartWithAuth(), this is the request we should
  // be issuing -- the final header line contains the credentials.
  MockWrite data_writes2[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Authorization: Basic Zm9vOmJhcg==\r\n\r\n"),
  };

  // Lastly, the server responds with the actual content.
  MockRead data_reads2[] = {
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  StaticSocketDataProvider data2(data_reads2, arraysize(data_reads2),
                                 data_writes2, arraysize(data_writes2));
  session_deps.socket_factory.AddSocketDataProvider(&data1);
  session_deps.socket_factory.AddSocketDataProvider(&data2);

  TestCompletionCallback callback1;

  int rv = trans->Start(&request, &callback1, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);

  // The password prompt info should have been set in response->auth_challenge.
  EXPECT_FALSE(response->auth_challenge.get() == NULL);

  EXPECT_EQ(L"www.google.com:80", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"MyRealm1", response->auth_challenge->realm);
  EXPECT_EQ(L"basic", response->auth_challenge->scheme);

  TestCompletionCallback callback2;

  rv = trans->RestartWithAuth(kFoo, kBar, &callback2);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback2.WaitForResult();
  EXPECT_EQ(OK, rv);

  response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);
  EXPECT_TRUE(response->auth_challenge.get() == NULL);
  EXPECT_EQ(100, response->headers->GetContentLength());
}

TEST_F(HttpNetworkTransactionTest, DoNotSendAuth) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = net::LOAD_DO_NOT_SEND_AUTH_DATA;

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockWrite data_writes[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads[] = {
    MockRead("HTTP/1.0 401 Unauthorized\r\n"),
    MockRead("WWW-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    // Large content-length -- won't matter, as connection will be reset.
    MockRead("Content-Length: 10000\r\n\r\n"),
    MockRead(false, ERR_FAILED),
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);
  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(0, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);
  EXPECT_TRUE(response->auth_challenge.get() == NULL);
}

// Test the request-challenge-retry sequence for basic auth, over a keep-alive
// connection.
TEST_F(HttpNetworkTransactionTest, BasicAuthKeepAlive) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  MockWrite data_writes1[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),

    // After calling trans->RestartWithAuth(), this is the request we should
    // be issuing -- the final header line contains the credentials.
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Authorization: Basic Zm9vOmJhcg==\r\n\r\n"),
  };

  MockRead data_reads1[] = {
    MockRead("HTTP/1.1 401 Unauthorized\r\n"),
    MockRead("WWW-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 14\r\n\r\n"),
    MockRead("Unauthorized\r\n"),

    // Lastly, the server responds with the actual content.
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 5\r\n\r\n"),
    MockRead("Hello"),
  };

  // If there is a regression where we disconnect a Keep-Alive
  // connection during an auth roundtrip, we'll end up reading this.
  MockRead data_reads2[] = {
    MockRead(false, ERR_FAILED),
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  StaticSocketDataProvider data2(data_reads2, arraysize(data_reads2),
                                 NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data1);
  session_deps.socket_factory.AddSocketDataProvider(&data2);

  TestCompletionCallback callback1;

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));
  int rv = trans->Start(&request, &callback1, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);

  // The password prompt info should have been set in response->auth_challenge.
  EXPECT_FALSE(response->auth_challenge.get() == NULL);

  EXPECT_EQ(L"www.google.com:80", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"MyRealm1", response->auth_challenge->realm);
  EXPECT_EQ(L"basic", response->auth_challenge->scheme);

  TestCompletionCallback callback2;

  rv = trans->RestartWithAuth(kFoo, kBar, &callback2);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback2.WaitForResult();
  EXPECT_EQ(OK, rv);

  response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);
  EXPECT_TRUE(response->auth_challenge.get() == NULL);
  EXPECT_EQ(5, response->headers->GetContentLength());
}

// Test the request-challenge-retry sequence for basic auth, over a keep-alive
// connection and with no response body to drain.
TEST_F(HttpNetworkTransactionTest, BasicAuthKeepAliveNoBody) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  MockWrite data_writes1[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),

    // After calling trans->RestartWithAuth(), this is the request we should
    // be issuing -- the final header line contains the credentials.
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Authorization: Basic Zm9vOmJhcg==\r\n\r\n"),
  };

  MockRead data_reads1[] = {
    MockRead("HTTP/1.1 401 Unauthorized\r\n"),
    MockRead("WWW-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("Content-Length: 0\r\n\r\n"),  // No response body.

    // Lastly, the server responds with the actual content.
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 5\r\n\r\n"),
    MockRead("hello"),
  };

  // An incorrect reconnect would cause this to be read.
  MockRead data_reads2[] = {
    MockRead(false, ERR_FAILED),
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  StaticSocketDataProvider data2(data_reads2, arraysize(data_reads2),
                                 NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data1);
  session_deps.socket_factory.AddSocketDataProvider(&data2);

  TestCompletionCallback callback1;

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));
  int rv = trans->Start(&request, &callback1, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);

  // The password prompt info should have been set in response->auth_challenge.
  EXPECT_FALSE(response->auth_challenge.get() == NULL);

  EXPECT_EQ(L"www.google.com:80", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"MyRealm1", response->auth_challenge->realm);
  EXPECT_EQ(L"basic", response->auth_challenge->scheme);

  TestCompletionCallback callback2;

  rv = trans->RestartWithAuth(kFoo, kBar, &callback2);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback2.WaitForResult();
  EXPECT_EQ(OK, rv);

  response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);
  EXPECT_TRUE(response->auth_challenge.get() == NULL);
  EXPECT_EQ(5, response->headers->GetContentLength());
}

// Test the request-challenge-retry sequence for basic auth, over a keep-alive
// connection and with a large response body to drain.
TEST_F(HttpNetworkTransactionTest, BasicAuthKeepAliveLargeBody) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  MockWrite data_writes1[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),

    // After calling trans->RestartWithAuth(), this is the request we should
    // be issuing -- the final header line contains the credentials.
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Authorization: Basic Zm9vOmJhcg==\r\n\r\n"),
  };

  // Respond with 5 kb of response body.
  std::string large_body_string("Unauthorized");
  large_body_string.append(5 * 1024, ' ');
  large_body_string.append("\r\n");

  MockRead data_reads1[] = {
    MockRead("HTTP/1.1 401 Unauthorized\r\n"),
    MockRead("WWW-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    // 5134 = 12 + 5 * 1024 + 2
    MockRead("Content-Length: 5134\r\n\r\n"),
    MockRead(true, large_body_string.data(), large_body_string.size()),

    // Lastly, the server responds with the actual content.
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 5\r\n\r\n"),
    MockRead("hello"),
  };

  // An incorrect reconnect would cause this to be read.
  MockRead data_reads2[] = {
    MockRead(false, ERR_FAILED),
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  StaticSocketDataProvider data2(data_reads2, arraysize(data_reads2),
                                 NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data1);
  session_deps.socket_factory.AddSocketDataProvider(&data2);

  TestCompletionCallback callback1;

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));
  int rv = trans->Start(&request, &callback1, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);

  // The password prompt info should have been set in response->auth_challenge.
  EXPECT_FALSE(response->auth_challenge.get() == NULL);

  EXPECT_EQ(L"www.google.com:80", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"MyRealm1", response->auth_challenge->realm);
  EXPECT_EQ(L"basic", response->auth_challenge->scheme);

  TestCompletionCallback callback2;

  rv = trans->RestartWithAuth(kFoo, kBar, &callback2);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback2.WaitForResult();
  EXPECT_EQ(OK, rv);

  response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);
  EXPECT_TRUE(response->auth_challenge.get() == NULL);
  EXPECT_EQ(5, response->headers->GetContentLength());
}

// Test the request-challenge-retry sequence for basic auth, over a keep-alive
// connection, but the server gets impatient and closes the connection.
TEST_F(HttpNetworkTransactionTest, BasicAuthKeepAliveImpatientServer) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  MockWrite data_writes1[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),
    // This simulates the seemingly successful write to a closed connection
    // if the bug is not fixed.
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Authorization: Basic Zm9vOmJhcg==\r\n\r\n"),
  };

  MockRead data_reads1[] = {
    MockRead("HTTP/1.1 401 Unauthorized\r\n"),
    MockRead("WWW-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 14\r\n\r\n"),
    // Tell MockTCPClientSocket to simulate the server closing the connection.
    MockRead(false, ERR_TEST_PEER_CLOSE_AFTER_NEXT_MOCK_READ),
    MockRead("Unauthorized\r\n"),
    MockRead(false, OK),  // The server closes the connection.
  };

  // After calling trans->RestartWithAuth(), this is the request we should
  // be issuing -- the final header line contains the credentials.
  MockWrite data_writes2[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Authorization: Basic Zm9vOmJhcg==\r\n\r\n"),
  };

  // Lastly, the server responds with the actual content.
  MockRead data_reads2[] = {
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 5\r\n\r\n"),
    MockRead("hello"),
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  StaticSocketDataProvider data2(data_reads2, arraysize(data_reads2),
                                 data_writes2, arraysize(data_writes2));
  session_deps.socket_factory.AddSocketDataProvider(&data1);
  session_deps.socket_factory.AddSocketDataProvider(&data2);

  TestCompletionCallback callback1;

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));
  int rv = trans->Start(&request, &callback1, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);

  // The password prompt info should have been set in response->auth_challenge.
  EXPECT_FALSE(response->auth_challenge.get() == NULL);

  EXPECT_EQ(L"www.google.com:80", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"MyRealm1", response->auth_challenge->realm);
  EXPECT_EQ(L"basic", response->auth_challenge->scheme);

  TestCompletionCallback callback2;

  rv = trans->RestartWithAuth(kFoo, kBar, &callback2);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback2.WaitForResult();
  EXPECT_EQ(OK, rv);

  response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);
  EXPECT_TRUE(response->auth_challenge.get() == NULL);
  EXPECT_EQ(5, response->headers->GetContentLength());
}

// Test the request-challenge-retry sequence for basic auth, over a connection
// that requires a restart when setting up an SSL tunnel.
TEST_F(HttpNetworkTransactionTest, BasicAuthProxyNoKeepAlive) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  // when the no authentication data flag is set.
  request.load_flags = net::LOAD_DO_NOT_SEND_AUTH_DATA;

  // Configure against proxy server "myproxy:70".
  SessionDependencies session_deps(ProxyService::CreateFixed("myproxy:70"));
  CapturingBoundNetLog log(CapturingNetLog::kUnbounded);
  session_deps.net_log = log.bound().net_log();
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  // Since we have proxy, should try to establish tunnel.
  MockWrite data_writes1[] = {
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),

    // After calling trans->RestartWithAuth(), this is the request we should
    // be issuing -- the final header line contains the credentials.
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n"
              "Proxy-Authorization: Basic Zm9vOmJhcg==\r\n\r\n"),

    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),
  };

  // The proxy responds to the connect with a 407, using a persistent
  // connection.
  MockRead data_reads1[] = {
    // No credentials.
    MockRead("HTTP/1.1 407 Proxy Authentication Required\r\n"),
    MockRead("Proxy-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("Proxy-Connection: close\r\n\r\n"),

    MockRead("HTTP/1.1 200 Connection Established\r\n\r\n"),

    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 5\r\n\r\n"),
    MockRead(false, "hello"),
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  session_deps.socket_factory.AddSocketDataProvider(&data1);
  SSLSocketDataProvider ssl(true, OK);
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  TestCompletionCallback callback1;

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback1, log.bound());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);
  net::CapturingNetLog::EntryList entries;
  log.GetEntries(&entries);
  size_t pos = ExpectLogContainsSomewhere(
      entries, 0, NetLog::TYPE_HTTP_TRANSACTION_SEND_TUNNEL_HEADERS,
      NetLog::PHASE_NONE);
  ExpectLogContainsSomewhere(
      entries, pos,
      NetLog::TYPE_HTTP_TRANSACTION_READ_TUNNEL_RESPONSE_HEADERS,
      NetLog::PHASE_NONE);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);

  EXPECT_EQ(407, response->headers->response_code());
  EXPECT_TRUE(HttpVersion(1, 1) == response->headers->GetHttpVersion());

  // The password prompt info should have been set in response->auth_challenge.
  ASSERT_FALSE(response->auth_challenge.get() == NULL);

  EXPECT_EQ(L"myproxy:70", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"MyRealm1", response->auth_challenge->realm);
  EXPECT_EQ(L"basic", response->auth_challenge->scheme);

  TestCompletionCallback callback2;

  rv = trans->RestartWithAuth(kFoo, kBar, &callback2);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback2.WaitForResult();
  EXPECT_EQ(OK, rv);

  response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);

  EXPECT_TRUE(response->headers->IsKeepAlive());
  EXPECT_EQ(200, response->headers->response_code());
  EXPECT_EQ(5, response->headers->GetContentLength());
  EXPECT_TRUE(HttpVersion(1, 1) == response->headers->GetHttpVersion());

  // The password prompt info should not be set.
  EXPECT_TRUE(response->auth_challenge.get() == NULL);

  trans.reset();
  session->CloseAllConnections();
}

// Test the request-challenge-retry sequence for basic auth, over a keep-alive
// proxy connection, when setting up an SSL tunnel.
TEST_F(HttpNetworkTransactionTest, BasicAuthProxyKeepAlive) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  // Ensure that proxy authentication is attempted even
  // when the no authentication data flag is set.
  request.load_flags = net::LOAD_DO_NOT_SEND_AUTH_DATA;

  // Configure against proxy server "myproxy:70".
  SessionDependencies session_deps(ProxyService::CreateFixed("myproxy:70"));
  CapturingBoundNetLog log(CapturingNetLog::kUnbounded);
  session_deps.net_log = log.bound().net_log();
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  // Since we have proxy, should try to establish tunnel.
  MockWrite data_writes1[] = {
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),

    // After calling trans->RestartWithAuth(), this is the request we should
    // be issuing -- the final header line contains the credentials.
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n"
              "Proxy-Authorization: Basic Zm9vOmJheg==\r\n\r\n"),
  };

  // The proxy responds to the connect with a 407, using a persistent
  // connection.
  MockRead data_reads1[] = {
    // No credentials.
    MockRead("HTTP/1.1 407 Proxy Authentication Required\r\n"),
    MockRead("Proxy-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("Content-Length: 10\r\n\r\n"),
    MockRead("0123456789"),

    // Wrong credentials (wrong password).
    MockRead("HTTP/1.1 407 Proxy Authentication Required\r\n"),
    MockRead("Proxy-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("Content-Length: 10\r\n\r\n"),
    // No response body because the test stops reading here.
    MockRead(false, ERR_UNEXPECTED),  // Should not be reached.
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  session_deps.socket_factory.AddSocketDataProvider(&data1);

  TestCompletionCallback callback1;

  int rv = trans->Start(&request, &callback1, log.bound());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);
  net::CapturingNetLog::EntryList entries;
  log.GetEntries(&entries);
  size_t pos = ExpectLogContainsSomewhere(
      entries, 0, NetLog::TYPE_HTTP_TRANSACTION_SEND_TUNNEL_HEADERS,
      NetLog::PHASE_NONE);
  ExpectLogContainsSomewhere(
      entries, pos,
      NetLog::TYPE_HTTP_TRANSACTION_READ_TUNNEL_RESPONSE_HEADERS,
      NetLog::PHASE_NONE);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);

  EXPECT_TRUE(response->headers->IsKeepAlive());
  EXPECT_EQ(407, response->headers->response_code());
  EXPECT_EQ(10, response->headers->GetContentLength());
  EXPECT_TRUE(HttpVersion(1, 1) == response->headers->GetHttpVersion());

  // The password prompt info should have been set in response->auth_challenge.
  EXPECT_FALSE(response->auth_challenge.get() == NULL);

  EXPECT_EQ(L"myproxy:70", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"MyRealm1", response->auth_challenge->realm);
  EXPECT_EQ(L"basic", response->auth_challenge->scheme);

  TestCompletionCallback callback2;

  // Wrong password (should be "bar").
  rv = trans->RestartWithAuth(kFoo, kBaz, &callback2);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback2.WaitForResult();
  EXPECT_EQ(OK, rv);

  response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);

  EXPECT_TRUE(response->headers->IsKeepAlive());
  EXPECT_EQ(407, response->headers->response_code());
  EXPECT_EQ(10, response->headers->GetContentLength());
  EXPECT_TRUE(HttpVersion(1, 1) == response->headers->GetHttpVersion());

  // The password prompt info should have been set in response->auth_challenge.
  EXPECT_FALSE(response->auth_challenge.get() == NULL);

  EXPECT_EQ(L"myproxy:70", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"MyRealm1", response->auth_challenge->realm);
  EXPECT_EQ(L"basic", response->auth_challenge->scheme);

  // Flush the idle socket before the NetLog and HttpNetworkTransaction go
  // out of scope.
  session->CloseAllConnections();
}

// Test that we don't read the response body when we fail to establish a tunnel,
// even if the user cancels the proxy's auth attempt.
TEST_F(HttpNetworkTransactionTest, BasicAuthProxyCancelTunnel) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  // Configure against proxy server "myproxy:70".
  SessionDependencies session_deps(ProxyService::CreateFixed("myproxy:70"));

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  // Since we have proxy, should try to establish tunnel.
  MockWrite data_writes[] = {
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),
  };

  // The proxy responds to the connect with a 407.
  MockRead data_reads[] = {
    MockRead("HTTP/1.1 407 Proxy Authentication Required\r\n"),
    MockRead("Proxy-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("Content-Length: 10\r\n\r\n"),
    MockRead(false, ERR_UNEXPECTED),  // Should not be reached.
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);

  EXPECT_TRUE(response->headers->IsKeepAlive());
  EXPECT_EQ(407, response->headers->response_code());
  EXPECT_EQ(10, response->headers->GetContentLength());
  EXPECT_TRUE(HttpVersion(1, 1) == response->headers->GetHttpVersion());

  std::string response_data;
  rv = ReadTransaction(trans.get(), &response_data);
  EXPECT_EQ(ERR_TUNNEL_CONNECTION_FAILED, rv);

  // Flush the idle socket before the HttpNetworkTransaction goes out of scope.
  session->CloseAllConnections();
}

// Test when a server (non-proxy) returns a 407 (proxy-authenticate).
// The request should fail with ERR_UNEXPECTED_PROXY_AUTH.
TEST_F(HttpNetworkTransactionTest, UnexpectedProxyAuth) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  // We are using a DIRECT connection (i.e. no proxy) for this session.
  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockWrite data_writes1[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads1[] = {
    MockRead("HTTP/1.0 407 Proxy Auth required\r\n"),
    MockRead("Proxy-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    // Large content-length -- won't matter, as connection will be reset.
    MockRead("Content-Length: 10000\r\n\r\n"),
    MockRead(false, ERR_FAILED),
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  session_deps.socket_factory.AddSocketDataProvider(&data1);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(ERR_UNEXPECTED_PROXY_AUTH, rv);
}

// Tests when an HTTPS server (non-proxy) returns a 407 (proxy-authentication)
// through a non-authenticating proxy. The request should fail with
// ERR_UNEXPECTED_PROXY_AUTH.
// Note that it is impossible to detect if an HTTP server returns a 407 through
// a non-authenticating proxy - there is nothing to indicate whether the
// response came from the proxy or the server, so it is treated as if the proxy
// issued the challenge.
TEST_F(HttpNetworkTransactionTest, HttpsServerRequestsProxyAuthThroughProxy) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");

  SessionDependencies session_deps(ProxyService::CreateFixed("myproxy:70"));
  CapturingBoundNetLog log(CapturingNetLog::kUnbounded);
  session_deps.net_log = log.bound().net_log();
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  // Since we have proxy, should try to establish tunnel.
  MockWrite data_writes1[] = {
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),

    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads1[] = {
    MockRead("HTTP/1.1 200 Connection Established\r\n\r\n"),

    MockRead("HTTP/1.1 407 Unauthorized\r\n"),
    MockRead("Proxy-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  session_deps.socket_factory.AddSocketDataProvider(&data1);
  SSLSocketDataProvider ssl(true, OK);
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  TestCompletionCallback callback1;

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback1, log.bound());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(ERR_UNEXPECTED_PROXY_AUTH, rv);
  net::CapturingNetLog::EntryList entries;
  log.GetEntries(&entries);
  size_t pos = ExpectLogContainsSomewhere(
      entries, 0, NetLog::TYPE_HTTP_TRANSACTION_SEND_TUNNEL_HEADERS,
      NetLog::PHASE_NONE);
  ExpectLogContainsSomewhere(
      entries, pos,
      NetLog::TYPE_HTTP_TRANSACTION_READ_TUNNEL_RESPONSE_HEADERS,
      NetLog::PHASE_NONE);
}

// Test a simple get through an HTTPS Proxy.
TEST_F(HttpNetworkTransactionTest, HttpsProxyGet) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");

  // Configure against https proxy server "proxy:70".
  SessionDependencies session_deps(ProxyService::CreateFixed("https://proxy:70"));
  CapturingBoundNetLog log(CapturingNetLog::kUnbounded);
  session_deps.net_log = log.bound().net_log();
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  // Since we have proxy, should use full url
  MockWrite data_writes1[] = {
    MockWrite("GET http://www.google.com/ HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads1[] = {
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  session_deps.socket_factory.AddSocketDataProvider(&data1);
  SSLSocketDataProvider ssl(true, OK);
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  TestCompletionCallback callback1;

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback1, log.bound());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);

  EXPECT_TRUE(response->headers->IsKeepAlive());
  EXPECT_EQ(200, response->headers->response_code());
  EXPECT_EQ(100, response->headers->GetContentLength());
  EXPECT_TRUE(HttpVersion(1, 1) == response->headers->GetHttpVersion());

  // The password prompt info should not be set.
  EXPECT_TRUE(response->auth_challenge.get() == NULL);
}

// Test a SPDY get through an HTTPS Proxy.
TEST_F(HttpNetworkTransactionTest, HttpsProxySpdyGet) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  // Configure against https proxy server "proxy:70".
  SessionDependencies session_deps(ProxyService::CreateFixed("https://proxy:70"));
  CapturingBoundNetLog log(CapturingNetLog::kUnbounded);
  session_deps.net_log = log.bound().net_log();
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  // fetch http://www.google.com/ via SPDY
  scoped_ptr<spdy::SpdyFrame> req(ConstructSpdyGet(NULL, 0, false, 1, LOWEST,
                                                   false));
  MockWrite spdy_writes[] = { CreateMockWrite(*req) };

  scoped_ptr<spdy::SpdyFrame> resp(ConstructSpdyGetSynReply(NULL, 0, 1));
  scoped_ptr<spdy::SpdyFrame> data(ConstructSpdyBodyFrame(1, true));
  MockRead spdy_reads[] = {
    CreateMockRead(*resp),
    CreateMockRead(*data),
    MockRead(true, 0, 0),
  };

  scoped_refptr<DelayedSocketData> spdy_data(
      new DelayedSocketData(
          1,  // wait for one write to finish before reading.
          spdy_reads, arraysize(spdy_reads),
          spdy_writes, arraysize(spdy_writes)));
  session_deps.socket_factory.AddSocketDataProvider(spdy_data);

  SSLSocketDataProvider ssl(true, OK);
  ssl.next_proto_status = SSLClientSocket::kNextProtoNegotiated;
  ssl.next_proto = "spdy/2";
  ssl.was_npn_negotiated = true;
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  TestCompletionCallback callback1;

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback1, log.bound());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());

  std::string response_data;
  ASSERT_EQ(OK, ReadTransaction(trans.get(), &response_data));
  EXPECT_EQ(net::kUploadData, response_data);
}

// Test a SPDY get through an HTTPS Proxy.
TEST_F(HttpNetworkTransactionTest, HttpsProxySpdyGetWithProxyAuth) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  // Configure against https proxy server "proxy:70".
  SessionDependencies session_deps(
      ProxyService::CreateFixed("https://proxy:70"));
  CapturingBoundNetLog log(CapturingNetLog::kUnbounded);
  session_deps.net_log = log.bound().net_log();
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  // The first request will be a bare GET, the second request will be a
  // GET with a Proxy-Authorization header.
  scoped_ptr<spdy::SpdyFrame> req_get(
      ConstructSpdyGet(NULL, 0, false, 1, LOWEST, false));
  const char* const kExtraAuthorizationHeaders[] = {
    "proxy-authorization",
    "Basic Zm9vOmJhcg==",
  };
  scoped_ptr<spdy::SpdyFrame> req_get_authorization(
      ConstructSpdyGet(
          kExtraAuthorizationHeaders, arraysize(kExtraAuthorizationHeaders)/2,
          false, 3, LOWEST, false));
  MockWrite spdy_writes[] = {
    CreateMockWrite(*req_get, 1),
    CreateMockWrite(*req_get_authorization, 4),
  };

  // The first response is a 407 proxy authentication challenge, and the second
  // response will be a 200 response since the second request includes a valid
  // Authorization header.
  const char* const kExtraAuthenticationHeaders[] = {
    "Proxy-Authenticate",
    "Basic realm=\"MyRealm1\""
  };
  scoped_ptr<spdy::SpdyFrame> resp_authentication(
      ConstructSpdySynReplyError(
          "407 Proxy Authentication Required",
          kExtraAuthenticationHeaders, arraysize(kExtraAuthenticationHeaders)/2,
          1));
  scoped_ptr<spdy::SpdyFrame> body_authentication(
      ConstructSpdyBodyFrame(1, true));
  scoped_ptr<spdy::SpdyFrame> resp_data(ConstructSpdyGetSynReply(NULL, 0, 3));
  scoped_ptr<spdy::SpdyFrame> body_data(ConstructSpdyBodyFrame(3, true));
  MockRead spdy_reads[] = {
    CreateMockRead(*resp_authentication, 2),
    CreateMockRead(*body_authentication, 3),
    CreateMockRead(*resp_data, 5),
    CreateMockRead(*body_data, 6),
    MockRead(true, 0, 7),
  };

  scoped_refptr<OrderedSocketData> data(
      new OrderedSocketData(spdy_reads, arraysize(spdy_reads),
                            spdy_writes, arraysize(spdy_writes)));
  session_deps.socket_factory.AddSocketDataProvider(data);

  SSLSocketDataProvider ssl(true, OK);
  ssl.next_proto_status = SSLClientSocket::kNextProtoNegotiated;
  ssl.next_proto = "spdy/2";
  ssl.was_npn_negotiated = true;
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  TestCompletionCallback callback1;

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback1, log.bound());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* const response = trans->GetResponseInfo();

  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ(407, response->headers->response_code());
  EXPECT_TRUE(response->was_fetched_via_spdy);

  // The password prompt info should have been set in response->auth_challenge.
  ASSERT_TRUE(response->auth_challenge.get() != NULL);
  EXPECT_TRUE(response->auth_challenge->is_proxy);
  EXPECT_EQ(L"proxy:70", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"MyRealm1", response->auth_challenge->realm);
  EXPECT_EQ(L"basic", response->auth_challenge->scheme);

  TestCompletionCallback callback2;

  rv = trans->RestartWithAuth(kFoo, kBar, &callback2);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback2.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* const response_restart = trans->GetResponseInfo();

  ASSERT_TRUE(response_restart != NULL);
  ASSERT_TRUE(response_restart->headers != NULL);
  EXPECT_EQ(200, response_restart->headers->response_code());
  // The password prompt info should not be set.
  EXPECT_TRUE(response_restart->auth_challenge.get() == NULL);
}

// Test a SPDY CONNECT through an HTTPS Proxy to an HTTPS (non-SPDY) Server.
TEST_F(HttpNetworkTransactionTest, HttpsProxySpdyConnectHttps) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  // Configure against https proxy server "proxy:70".
  SessionDependencies session_deps(ProxyService::CreateFixed("https://proxy:70"));
  CapturingBoundNetLog log(CapturingNetLog::kUnbounded);
  session_deps.net_log = log.bound().net_log();
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  // CONNECT to www.google.com:443 via SPDY
  scoped_ptr<spdy::SpdyFrame> connect(ConstructSpdyConnect(NULL, 0, 1));
  // fetch https://www.google.com/ via HTTP

  const char get[] = "GET / HTTP/1.1\r\n"
    "Host: www.google.com\r\n"
    "Connection: keep-alive\r\n\r\n";
  scoped_ptr<spdy::SpdyFrame> wrapped_get(
      ConstructSpdyBodyFrame(1, get, strlen(get), false));
  MockWrite spdy_writes[] = {
      CreateMockWrite(*connect, 1),
      CreateMockWrite(*wrapped_get, 3)
  };

  scoped_ptr<spdy::SpdyFrame> conn_resp(ConstructSpdyGetSynReply(NULL, 0, 1));
  const char resp[] = "HTTP/1.1 200 OK\r\n"
      "Content-Length: 10\r\n\r\n";

  scoped_ptr<spdy::SpdyFrame> wrapped_get_resp(
      ConstructSpdyBodyFrame(1, resp, strlen(resp), false));
  scoped_ptr<spdy::SpdyFrame> wrapped_body(
      ConstructSpdyBodyFrame(1, "1234567890", 10, false));
  MockRead spdy_reads[] = {
    CreateMockRead(*conn_resp, 2, true),
    CreateMockRead(*wrapped_get_resp, 4, true),
    CreateMockRead(*wrapped_body, 5, true),
    CreateMockRead(*wrapped_body, 6, true),
    MockRead(true, 0, 7),
  };

  scoped_refptr<OrderedSocketData> spdy_data(
      new OrderedSocketData(
          spdy_reads, arraysize(spdy_reads),
          spdy_writes, arraysize(spdy_writes)));
  session_deps.socket_factory.AddSocketDataProvider(spdy_data);

  SSLSocketDataProvider ssl(true, OK);
  ssl.next_proto_status = SSLClientSocket::kNextProtoNegotiated;
  ssl.next_proto = "spdy/2";
  ssl.was_npn_negotiated = true;
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);
  SSLSocketDataProvider ssl2(true, OK);
  ssl2.was_npn_negotiated = false;
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl2);

  TestCompletionCallback callback1;

  int rv = trans->Start(&request, &callback1, log.bound());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());

  std::string response_data;
  ASSERT_EQ(OK, ReadTransaction(trans.get(), &response_data));
  EXPECT_EQ("1234567890", response_data);
}

// Test a SPDY CONNECT through an HTTPS Proxy to a SPDY server.
TEST_F(HttpNetworkTransactionTest, HttpsProxySpdyConnectSpdy) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  // Configure against https proxy server "proxy:70".
  SessionDependencies session_deps(ProxyService::CreateFixed("https://proxy:70"));
  CapturingBoundNetLog log(CapturingNetLog::kUnbounded);
  session_deps.net_log = log.bound().net_log();
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  // CONNECT to www.google.com:443 via SPDY
  scoped_ptr<spdy::SpdyFrame> connect(ConstructSpdyConnect(NULL, 0, 1));
  // fetch https://www.google.com/ via SPDY
  const char* const kMyUrl = "https://www.google.com/";
  scoped_ptr<spdy::SpdyFrame> get(ConstructSpdyGet(kMyUrl, false, 1, LOWEST));
  scoped_ptr<spdy::SpdyFrame> wrapped_get(ConstructWrappedSpdyFrame(get, 1));
  MockWrite spdy_writes[] = {
      CreateMockWrite(*connect, 1),
      CreateMockWrite(*wrapped_get, 3)
  };

  scoped_ptr<spdy::SpdyFrame> conn_resp(ConstructSpdyGetSynReply(NULL, 0, 1));
  scoped_ptr<spdy::SpdyFrame> get_resp(ConstructSpdyGetSynReply(NULL, 0, 1));
  scoped_ptr<spdy::SpdyFrame> wrapped_get_resp(
      ConstructWrappedSpdyFrame(get_resp, 1));
  scoped_ptr<spdy::SpdyFrame> body(ConstructSpdyBodyFrame(1, true));
  scoped_ptr<spdy::SpdyFrame> wrapped_body(ConstructWrappedSpdyFrame(body, 1));
  MockRead spdy_reads[] = {
    CreateMockRead(*conn_resp, 2, true),
    CreateMockRead(*wrapped_get_resp, 4, true),
    CreateMockRead(*wrapped_body, 5, true),
    MockRead(true, 0, 1),
  };

  scoped_refptr<OrderedSocketData> spdy_data(
      new OrderedSocketData(
          spdy_reads, arraysize(spdy_reads),
          spdy_writes, arraysize(spdy_writes)));
  session_deps.socket_factory.AddSocketDataProvider(spdy_data);

  SSLSocketDataProvider ssl(true, OK);
  ssl.next_proto_status = SSLClientSocket::kNextProtoNegotiated;
  ssl.next_proto = "spdy/2";
  ssl.was_npn_negotiated = true;
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);
  SSLSocketDataProvider ssl2(true, OK);
  ssl2.next_proto_status = SSLClientSocket::kNextProtoNegotiated;
  ssl2.next_proto = "spdy/2";
  ssl2.was_npn_negotiated = true;
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl2);

  TestCompletionCallback callback1;

  int rv = trans->Start(&request, &callback1, log.bound());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());

  std::string response_data;
  ASSERT_EQ(OK, ReadTransaction(trans.get(), &response_data));
  EXPECT_EQ(net::kUploadData, response_data);
}

// Test a SPDY CONNECT failure through an HTTPS Proxy.
TEST_F(HttpNetworkTransactionTest, HttpsProxySpdyConnectFailure) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  // Configure against https proxy server "proxy:70".
  SessionDependencies session_deps(ProxyService::CreateFixed("https://proxy:70"));
  CapturingBoundNetLog log(CapturingNetLog::kUnbounded);
  session_deps.net_log = log.bound().net_log();
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  // CONNECT to www.google.com:443 via SPDY
  scoped_ptr<spdy::SpdyFrame> connect(ConstructSpdyConnect(NULL, 0, 1));
  scoped_ptr<spdy::SpdyFrame> get(ConstructSpdyRstStream(1, spdy::CANCEL));

  MockWrite spdy_writes[] = {
      CreateMockWrite(*connect, 1),
      CreateMockWrite(*get, 3),
  };

  scoped_ptr<spdy::SpdyFrame> resp(ConstructSpdySynReplyError(1));
  scoped_ptr<spdy::SpdyFrame> data(ConstructSpdyBodyFrame(1, true));
  MockRead spdy_reads[] = {
    CreateMockRead(*resp, 2, true),
    MockRead(true, 0, 4),
  };

  scoped_refptr<OrderedSocketData> spdy_data(
      new OrderedSocketData(
          spdy_reads, arraysize(spdy_reads),
          spdy_writes, arraysize(spdy_writes)));
  session_deps.socket_factory.AddSocketDataProvider(spdy_data);

  SSLSocketDataProvider ssl(true, OK);
  ssl.next_proto_status = SSLClientSocket::kNextProtoNegotiated;
  ssl.next_proto = "spdy/2";
  ssl.was_npn_negotiated = true;
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);
  SSLSocketDataProvider ssl2(true, OK);
  ssl2.next_proto_status = SSLClientSocket::kNextProtoNegotiated;
  ssl2.next_proto = "spdy/2";
  ssl2.was_npn_negotiated = true;
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl2);

  TestCompletionCallback callback1;

  int rv = trans->Start(&request, &callback1, log.bound());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);
  EXPECT_EQ(500, response->headers->response_code());
}

// Test the challenge-response-retry sequence through an HTTPS Proxy
TEST_F(HttpNetworkTransactionTest, HttpsProxyAuthRetry) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  // when the no authentication data flag is set.
  request.load_flags = net::LOAD_DO_NOT_SEND_AUTH_DATA;

  // Configure against https proxy server "proxy:70".
  SessionDependencies session_deps(ProxyService::CreateFixed("https://proxy:70"));
  CapturingBoundNetLog log(CapturingNetLog::kUnbounded);
  session_deps.net_log = log.bound().net_log();
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  // Since we have proxy, should use full url
  MockWrite data_writes1[] = {
    MockWrite("GET http://www.google.com/ HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),

    // After calling trans->RestartWithAuth(), this is the request we should
    // be issuing -- the final header line contains the credentials.
    MockWrite("GET http://www.google.com/ HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n"
              "Proxy-Authorization: Basic Zm9vOmJhcg==\r\n\r\n"),
  };

  // The proxy responds to the GET with a 407, using a persistent
  // connection.
  MockRead data_reads1[] = {
    // No credentials.
    MockRead("HTTP/1.1 407 Proxy Authentication Required\r\n"),
    MockRead("Proxy-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("Proxy-Connection: keep-alive\r\n"),
    MockRead("Content-Length: 0\r\n\r\n"),

    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  session_deps.socket_factory.AddSocketDataProvider(&data1);
  SSLSocketDataProvider ssl(true, OK);
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  TestCompletionCallback callback1;

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback1, log.bound());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);

  EXPECT_EQ(407, response->headers->response_code());
  EXPECT_TRUE(HttpVersion(1, 1) == response->headers->GetHttpVersion());

  // The password prompt info should have been set in response->auth_challenge.
  ASSERT_FALSE(response->auth_challenge.get() == NULL);

  EXPECT_EQ(L"proxy:70", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"MyRealm1", response->auth_challenge->realm);
  EXPECT_EQ(L"basic", response->auth_challenge->scheme);

  TestCompletionCallback callback2;

  rv = trans->RestartWithAuth(kFoo, kBar, &callback2);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback2.WaitForResult();
  EXPECT_EQ(OK, rv);

  response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);

  EXPECT_TRUE(response->headers->IsKeepAlive());
  EXPECT_EQ(200, response->headers->response_code());
  EXPECT_EQ(100, response->headers->GetContentLength());
  EXPECT_TRUE(HttpVersion(1, 1) == response->headers->GetHttpVersion());

  // The password prompt info should not be set.
  EXPECT_TRUE(response->auth_challenge.get() == NULL);
}

void HttpNetworkTransactionTest::ConnectStatusHelperWithExpectedStatus(
    const MockRead& status, int expected_status) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  // Configure against proxy server "myproxy:70".
  SessionDependencies session_deps(ProxyService::CreateFixed("myproxy:70"));

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  // Since we have proxy, should try to establish tunnel.
  MockWrite data_writes[] = {
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads[] = {
    status,
    MockRead("Content-Length: 10\r\n\r\n"),
    // No response body because the test stops reading here.
    MockRead(false, ERR_UNEXPECTED),  // Should not be reached.
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(expected_status, rv);
}

void HttpNetworkTransactionTest::ConnectStatusHelper(const MockRead& status) {
  ConnectStatusHelperWithExpectedStatus(
      status, ERR_TUNNEL_CONNECTION_FAILED);
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus100) {
  ConnectStatusHelper(MockRead("HTTP/1.1 100 Continue\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus101) {
  ConnectStatusHelper(MockRead("HTTP/1.1 101 Switching Protocols\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus201) {
  ConnectStatusHelper(MockRead("HTTP/1.1 201 Created\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus202) {
  ConnectStatusHelper(MockRead("HTTP/1.1 202 Accepted\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus203) {
  ConnectStatusHelper(
      MockRead("HTTP/1.1 203 Non-Authoritative Information\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus204) {
  ConnectStatusHelper(MockRead("HTTP/1.1 204 No Content\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus205) {
  ConnectStatusHelper(MockRead("HTTP/1.1 205 Reset Content\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus206) {
  ConnectStatusHelper(MockRead("HTTP/1.1 206 Partial Content\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus300) {
  ConnectStatusHelper(MockRead("HTTP/1.1 300 Multiple Choices\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus301) {
  ConnectStatusHelper(MockRead("HTTP/1.1 301 Moved Permanently\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus302) {
  ConnectStatusHelper(MockRead("HTTP/1.1 302 Found\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus303) {
  ConnectStatusHelper(MockRead("HTTP/1.1 303 See Other\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus304) {
  ConnectStatusHelper(MockRead("HTTP/1.1 304 Not Modified\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus305) {
  ConnectStatusHelper(MockRead("HTTP/1.1 305 Use Proxy\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus306) {
  ConnectStatusHelper(MockRead("HTTP/1.1 306\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus307) {
  ConnectStatusHelper(MockRead("HTTP/1.1 307 Temporary Redirect\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus400) {
  ConnectStatusHelper(MockRead("HTTP/1.1 400 Bad Request\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus401) {
  ConnectStatusHelper(MockRead("HTTP/1.1 401 Unauthorized\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus402) {
  ConnectStatusHelper(MockRead("HTTP/1.1 402 Payment Required\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus403) {
  ConnectStatusHelper(MockRead("HTTP/1.1 403 Forbidden\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus404) {
  ConnectStatusHelper(MockRead("HTTP/1.1 404 Not Found\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus405) {
  ConnectStatusHelper(MockRead("HTTP/1.1 405 Method Not Allowed\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus406) {
  ConnectStatusHelper(MockRead("HTTP/1.1 406 Not Acceptable\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus407) {
  ConnectStatusHelperWithExpectedStatus(
      MockRead("HTTP/1.1 407 Proxy Authentication Required\r\n"),
      ERR_PROXY_AUTH_UNSUPPORTED);
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus408) {
  ConnectStatusHelper(MockRead("HTTP/1.1 408 Request Timeout\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus409) {
  ConnectStatusHelper(MockRead("HTTP/1.1 409 Conflict\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus410) {
  ConnectStatusHelper(MockRead("HTTP/1.1 410 Gone\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus411) {
  ConnectStatusHelper(MockRead("HTTP/1.1 411 Length Required\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus412) {
  ConnectStatusHelper(MockRead("HTTP/1.1 412 Precondition Failed\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus413) {
  ConnectStatusHelper(MockRead("HTTP/1.1 413 Request Entity Too Large\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus414) {
  ConnectStatusHelper(MockRead("HTTP/1.1 414 Request-URI Too Long\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus415) {
  ConnectStatusHelper(MockRead("HTTP/1.1 415 Unsupported Media Type\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus416) {
  ConnectStatusHelper(
      MockRead("HTTP/1.1 416 Requested Range Not Satisfiable\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus417) {
  ConnectStatusHelper(MockRead("HTTP/1.1 417 Expectation Failed\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus500) {
  ConnectStatusHelper(MockRead("HTTP/1.1 500 Internal Server Error\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus501) {
  ConnectStatusHelper(MockRead("HTTP/1.1 501 Not Implemented\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus502) {
  ConnectStatusHelper(MockRead("HTTP/1.1 502 Bad Gateway\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus503) {
  ConnectStatusHelper(MockRead("HTTP/1.1 503 Service Unavailable\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus504) {
  ConnectStatusHelper(MockRead("HTTP/1.1 504 Gateway Timeout\r\n"));
}

TEST_F(HttpNetworkTransactionTest, ConnectStatus505) {
  ConnectStatusHelper(MockRead("HTTP/1.1 505 HTTP Version Not Supported\r\n"));
}

// Test the flow when both the proxy server AND origin server require
// authentication. Again, this uses basic auth for both since that is
// the simplest to mock.
TEST_F(HttpNetworkTransactionTest, BasicAuthProxyThenServer) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  SessionDependencies session_deps(ProxyService::CreateFixed("myproxy:70"));

  // Configure against proxy server "myproxy:70".
  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(
      CreateSession(&session_deps)));

  MockWrite data_writes1[] = {
    MockWrite("GET http://www.google.com/ HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads1[] = {
    MockRead("HTTP/1.0 407 Unauthorized\r\n"),
    // Give a couple authenticate options (only the middle one is actually
    // supported).
    MockRead("Proxy-Authenticate: Basic invalid\r\n"),  // Malformed.
    MockRead("Proxy-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("Proxy-Authenticate: UNSUPPORTED realm=\"FOO\"\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    // Large content-length -- won't matter, as connection will be reset.
    MockRead("Content-Length: 10000\r\n\r\n"),
    MockRead(false, ERR_FAILED),
  };

  // After calling trans->RestartWithAuth() the first time, this is the
  // request we should be issuing -- the final header line contains the
  // proxy's credentials.
  MockWrite data_writes2[] = {
    MockWrite("GET http://www.google.com/ HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n"
              "Proxy-Authorization: Basic Zm9vOmJhcg==\r\n\r\n"),
  };

  // Now the proxy server lets the request pass through to origin server.
  // The origin server responds with a 401.
  MockRead data_reads2[] = {
    MockRead("HTTP/1.0 401 Unauthorized\r\n"),
    // Note: We are using the same realm-name as the proxy server. This is
    // completely valid, as realms are unique across hosts.
    MockRead("WWW-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 2000\r\n\r\n"),
    MockRead(false, ERR_FAILED),  // Won't be reached.
  };

  // After calling trans->RestartWithAuth() the second time, we should send
  // the credentials for both the proxy and origin server.
  MockWrite data_writes3[] = {
    MockWrite("GET http://www.google.com/ HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n"
              "Proxy-Authorization: Basic Zm9vOmJhcg==\r\n"
              "Authorization: Basic Zm9vMjpiYXIy\r\n\r\n"),
  };

  // Lastly we get the desired content.
  MockRead data_reads3[] = {
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  StaticSocketDataProvider data2(data_reads2, arraysize(data_reads2),
                                 data_writes2, arraysize(data_writes2));
  StaticSocketDataProvider data3(data_reads3, arraysize(data_reads3),
                                 data_writes3, arraysize(data_writes3));
  session_deps.socket_factory.AddSocketDataProvider(&data1);
  session_deps.socket_factory.AddSocketDataProvider(&data2);
  session_deps.socket_factory.AddSocketDataProvider(&data3);

  TestCompletionCallback callback1;

  int rv = trans->Start(&request, &callback1, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);

  // The password prompt info should have been set in response->auth_challenge.
  EXPECT_FALSE(response->auth_challenge.get() == NULL);

  EXPECT_EQ(L"myproxy:70", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"MyRealm1", response->auth_challenge->realm);
  EXPECT_EQ(L"basic", response->auth_challenge->scheme);

  TestCompletionCallback callback2;

  rv = trans->RestartWithAuth(kFoo, kBar, &callback2);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback2.WaitForResult();
  EXPECT_EQ(OK, rv);

  response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);
  EXPECT_FALSE(response->auth_challenge.get() == NULL);

  EXPECT_EQ(L"www.google.com:80", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"MyRealm1", response->auth_challenge->realm);
  EXPECT_EQ(L"basic", response->auth_challenge->scheme);

  TestCompletionCallback callback3;

  rv = trans->RestartWithAuth(kFoo2, kBar2, &callback3);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback3.WaitForResult();
  EXPECT_EQ(OK, rv);

  response = trans->GetResponseInfo();
  EXPECT_TRUE(response->auth_challenge.get() == NULL);
  EXPECT_EQ(100, response->headers->GetContentLength());
}

// For the NTLM implementation using SSPI, we skip the NTLM tests since we
// can't hook into its internals to cause it to generate predictable NTLM
// authorization headers.
#if defined(NTLM_PORTABLE)
// The NTLM authentication unit tests were generated by capturing the HTTP
// requests and responses using Fiddler 2 and inspecting the generated random
// bytes in the debugger.

// Enter the correct password and authenticate successfully.
TEST_F(HttpNetworkTransactionTest, NTLMAuth1) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://172.22.68.17/kids/login.aspx");
  request.load_flags = 0;

  HttpAuthHandlerNTLM::ScopedProcSetter proc_setter(MockGenerateRandom1,
                                                    MockGetHostName);
  SessionDependencies session_deps;
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  MockWrite data_writes1[] = {
    MockWrite("GET /kids/login.aspx HTTP/1.1\r\n"
              "Host: 172.22.68.17\r\n"
              "Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads1[] = {
    MockRead("HTTP/1.1 401 Access Denied\r\n"),
    // Negotiate and NTLM are often requested together.  However, we only want
    // to test NTLM. Since Negotiate is preferred over NTLM, we have to skip
    // the header that requests Negotiate for this test.
    MockRead("WWW-Authenticate: NTLM\r\n"),
    MockRead("Connection: close\r\n"),
    MockRead("Content-Length: 42\r\n"),
    MockRead("Content-Type: text/html\r\n\r\n"),
    // Missing content -- won't matter, as connection will be reset.
    MockRead(false, ERR_UNEXPECTED),
  };

  MockWrite data_writes2[] = {
    // After restarting with a null identity, this is the
    // request we should be issuing -- the final header line contains a Type
    // 1 message.
    MockWrite("GET /kids/login.aspx HTTP/1.1\r\n"
              "Host: 172.22.68.17\r\n"
              "Connection: keep-alive\r\n"
              "Authorization: NTLM "
              "TlRMTVNTUAABAAAAB4IIAAAAAAAAAAAAAAAAAAAAAAA=\r\n\r\n"),

    // After calling trans->RestartWithAuth(), we should send a Type 3 message
    // (the credentials for the origin server).  The second request continues
    // on the same connection.
    MockWrite("GET /kids/login.aspx HTTP/1.1\r\n"
              "Host: 172.22.68.17\r\n"
              "Connection: keep-alive\r\n"
              "Authorization: NTLM TlRMTVNTUAADAAAAGAAYAGgAAAAYABgAgA"
              "AAAAAAAABAAAAAGAAYAEAAAAAQABAAWAAAAAAAAAAAAAAABYIIAHQA"
              "ZQBzAHQAaQBuAGcALQBuAHQAbABtAFcAVABDAC0AVwBJAE4ANwBVKW"
              "Yma5xzVAAAAAAAAAAAAAAAAAAAAACH+gWcm+YsP9Tqb9zCR3WAeZZX"
              "ahlhx5I=\r\n\r\n"),
  };

  MockRead data_reads2[] = {
    // The origin server responds with a Type 2 message.
    MockRead("HTTP/1.1 401 Access Denied\r\n"),
    MockRead("WWW-Authenticate: NTLM "
             "TlRMTVNTUAACAAAADAAMADgAAAAFgokCjGpMpPGlYKkAAAAAAAAAALo"
             "AugBEAAAABQEoCgAAAA9HAE8ATwBHAEwARQACAAwARwBPAE8ARwBMAE"
             "UAAQAaAEEASwBFAEUAUwBBAFIAQQAtAEMATwBSAFAABAAeAGMAbwByA"
             "HAALgBnAG8AbwBnAGwAZQAuAGMAbwBtAAMAQABhAGsAZQBlAHMAYQBy"
             "AGEALQBjAG8AcgBwAC4AYQBkAC4AYwBvAHIAcAAuAGcAbwBvAGcAbAB"
             "lAC4AYwBvAG0ABQAeAGMAbwByAHAALgBnAG8AbwBnAGwAZQAuAGMAbw"
             "BtAAAAAAA=\r\n"),
    MockRead("Content-Length: 42\r\n"),
    MockRead("Content-Type: text/html\r\n\r\n"),
    MockRead("You are not authorized to view this page\r\n"),

    // Lastly we get the desired content.
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=utf-8\r\n"),
    MockRead("Content-Length: 13\r\n\r\n"),
    MockRead("Please Login\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  StaticSocketDataProvider data2(data_reads2, arraysize(data_reads2),
                                 data_writes2, arraysize(data_writes2));
  session_deps.socket_factory.AddSocketDataProvider(&data1);
  session_deps.socket_factory.AddSocketDataProvider(&data2);

  TestCompletionCallback callback1;

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback1, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  EXPECT_FALSE(trans->IsReadyToRestartForAuth());

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);

  // The password prompt info should have been set in
  // response->auth_challenge.
  ASSERT_FALSE(response->auth_challenge.get() == NULL);

  EXPECT_EQ(L"172.22.68.17:80", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"", response->auth_challenge->realm);
  EXPECT_EQ(L"ntlm", response->auth_challenge->scheme);

  TestCompletionCallback callback2;

  rv = trans->RestartWithAuth(kTestingNTLM, kTestingNTLM, &callback2);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback2.WaitForResult();
  EXPECT_EQ(OK, rv);

  EXPECT_TRUE(trans->IsReadyToRestartForAuth());

  response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);

  EXPECT_TRUE(response->auth_challenge.get() == NULL);

  TestCompletionCallback callback3;

  rv = trans->RestartWithAuth(string16(), string16(), &callback3);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback3.WaitForResult();
  EXPECT_EQ(OK, rv);

  response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);
  EXPECT_TRUE(response->auth_challenge.get() == NULL);
  EXPECT_EQ(13, response->headers->GetContentLength());
}

// Enter a wrong password, and then the correct one.
TEST_F(HttpNetworkTransactionTest, NTLMAuth2) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://172.22.68.17/kids/login.aspx");
  request.load_flags = 0;

  HttpAuthHandlerNTLM::ScopedProcSetter proc_setter(MockGenerateRandom2,
                                                    MockGetHostName);
  SessionDependencies session_deps;
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  MockWrite data_writes1[] = {
    MockWrite("GET /kids/login.aspx HTTP/1.1\r\n"
              "Host: 172.22.68.17\r\n"
              "Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads1[] = {
    MockRead("HTTP/1.1 401 Access Denied\r\n"),
    // Negotiate and NTLM are often requested together.  However, we only want
    // to test NTLM. Since Negotiate is preferred over NTLM, we have to skip
    // the header that requests Negotiate for this test.
    MockRead("WWW-Authenticate: NTLM\r\n"),
    MockRead("Connection: close\r\n"),
    MockRead("Content-Length: 42\r\n"),
    MockRead("Content-Type: text/html\r\n\r\n"),
    // Missing content -- won't matter, as connection will be reset.
    MockRead(false, ERR_UNEXPECTED),
  };

  MockWrite data_writes2[] = {
    // After restarting with a null identity, this is the
    // request we should be issuing -- the final header line contains a Type
    // 1 message.
    MockWrite("GET /kids/login.aspx HTTP/1.1\r\n"
              "Host: 172.22.68.17\r\n"
              "Connection: keep-alive\r\n"
              "Authorization: NTLM "
              "TlRMTVNTUAABAAAAB4IIAAAAAAAAAAAAAAAAAAAAAAA=\r\n\r\n"),

    // After calling trans->RestartWithAuth(), we should send a Type 3 message
    // (the credentials for the origin server).  The second request continues
    // on the same connection.
    MockWrite("GET /kids/login.aspx HTTP/1.1\r\n"
              "Host: 172.22.68.17\r\n"
              "Connection: keep-alive\r\n"
              "Authorization: NTLM TlRMTVNTUAADAAAAGAAYAGgAAAAYABgAgA"
              "AAAAAAAABAAAAAGAAYAEAAAAAQABAAWAAAAAAAAAAAAAAABYIIAHQA"
              "ZQBzAHQAaQBuAGcALQBuAHQAbABtAFcAVABDAC0AVwBJAE4ANwCWeY"
              "XnSZNwoQAAAAAAAAAAAAAAAAAAAADLa34/phTTKzNTWdub+uyFleOj"
              "4Ww7b7E=\r\n\r\n"),
  };

  MockRead data_reads2[] = {
    // The origin server responds with a Type 2 message.
    MockRead("HTTP/1.1 401 Access Denied\r\n"),
    MockRead("WWW-Authenticate: NTLM "
             "TlRMTVNTUAACAAAADAAMADgAAAAFgokCbVWUZezVGpAAAAAAAAAAALo"
             "AugBEAAAABQEoCgAAAA9HAE8ATwBHAEwARQACAAwARwBPAE8ARwBMAE"
             "UAAQAaAEEASwBFAEUAUwBBAFIAQQAtAEMATwBSAFAABAAeAGMAbwByA"
             "HAALgBnAG8AbwBnAGwAZQAuAGMAbwBtAAMAQABhAGsAZQBlAHMAYQBy"
             "AGEALQBjAG8AcgBwAC4AYQBkAC4AYwBvAHIAcAAuAGcAbwBvAGcAbAB"
             "lAC4AYwBvAG0ABQAeAGMAbwByAHAALgBnAG8AbwBnAGwAZQAuAGMAbw"
             "BtAAAAAAA=\r\n"),
    MockRead("Content-Length: 42\r\n"),
    MockRead("Content-Type: text/html\r\n\r\n"),
    MockRead("You are not authorized to view this page\r\n"),

    // Wrong password.
    MockRead("HTTP/1.1 401 Access Denied\r\n"),
    MockRead("WWW-Authenticate: NTLM\r\n"),
    MockRead("Connection: close\r\n"),
    MockRead("Content-Length: 42\r\n"),
    MockRead("Content-Type: text/html\r\n\r\n"),
    // Missing content -- won't matter, as connection will be reset.
    MockRead(false, ERR_UNEXPECTED),
  };

  MockWrite data_writes3[] = {
    // After restarting with a null identity, this is the
    // request we should be issuing -- the final header line contains a Type
    // 1 message.
    MockWrite("GET /kids/login.aspx HTTP/1.1\r\n"
              "Host: 172.22.68.17\r\n"
              "Connection: keep-alive\r\n"
              "Authorization: NTLM "
              "TlRMTVNTUAABAAAAB4IIAAAAAAAAAAAAAAAAAAAAAAA=\r\n\r\n"),

    // After calling trans->RestartWithAuth(), we should send a Type 3 message
    // (the credentials for the origin server).  The second request continues
    // on the same connection.
    MockWrite("GET /kids/login.aspx HTTP/1.1\r\n"
              "Host: 172.22.68.17\r\n"
              "Connection: keep-alive\r\n"
              "Authorization: NTLM TlRMTVNTUAADAAAAGAAYAGgAAAAYABgAgA"
              "AAAAAAAABAAAAAGAAYAEAAAAAQABAAWAAAAAAAAAAAAAAABYIIAHQA"
              "ZQBzAHQAaQBuAGcALQBuAHQAbABtAFcAVABDAC0AVwBJAE4ANwBO54"
              "dFMVvTHwAAAAAAAAAAAAAAAAAAAACS7sT6Uzw7L0L//WUqlIaVWpbI"
              "+4MUm7c=\r\n\r\n"),
  };

  MockRead data_reads3[] = {
    // The origin server responds with a Type 2 message.
    MockRead("HTTP/1.1 401 Access Denied\r\n"),
    MockRead("WWW-Authenticate: NTLM "
             "TlRMTVNTUAACAAAADAAMADgAAAAFgokCL24VN8dgOR8AAAAAAAAAALo"
             "AugBEAAAABQEoCgAAAA9HAE8ATwBHAEwARQACAAwARwBPAE8ARwBMAE"
             "UAAQAaAEEASwBFAEUAUwBBAFIAQQAtAEMATwBSAFAABAAeAGMAbwByA"
             "HAALgBnAG8AbwBnAGwAZQAuAGMAbwBtAAMAQABhAGsAZQBlAHMAYQBy"
             "AGEALQBjAG8AcgBwAC4AYQBkAC4AYwBvAHIAcAAuAGcAbwBvAGcAbAB"
             "lAC4AYwBvAG0ABQAeAGMAbwByAHAALgBnAG8AbwBnAGwAZQAuAGMAbw"
             "BtAAAAAAA=\r\n"),
    MockRead("Content-Length: 42\r\n"),
    MockRead("Content-Type: text/html\r\n\r\n"),
    MockRead("You are not authorized to view this page\r\n"),

    // Lastly we get the desired content.
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=utf-8\r\n"),
    MockRead("Content-Length: 13\r\n\r\n"),
    MockRead("Please Login\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  StaticSocketDataProvider data2(data_reads2, arraysize(data_reads2),
                                 data_writes2, arraysize(data_writes2));
  StaticSocketDataProvider data3(data_reads3, arraysize(data_reads3),
                                 data_writes3, arraysize(data_writes3));
  session_deps.socket_factory.AddSocketDataProvider(&data1);
  session_deps.socket_factory.AddSocketDataProvider(&data2);
  session_deps.socket_factory.AddSocketDataProvider(&data3);

  TestCompletionCallback callback1;

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback1, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  EXPECT_FALSE(trans->IsReadyToRestartForAuth());

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);

  // The password prompt info should have been set in response->auth_challenge.
  EXPECT_FALSE(response->auth_challenge.get() == NULL);

  EXPECT_EQ(L"172.22.68.17:80", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"", response->auth_challenge->realm);
  EXPECT_EQ(L"ntlm", response->auth_challenge->scheme);

  TestCompletionCallback callback2;

  // Enter the wrong password.
  rv = trans->RestartWithAuth(kTestingNTLM, kWrongPassword, &callback2);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback2.WaitForResult();
  EXPECT_EQ(OK, rv);

  EXPECT_TRUE(trans->IsReadyToRestartForAuth());
  TestCompletionCallback callback3;
  rv = trans->RestartWithAuth(string16(), string16(), &callback3);
  EXPECT_EQ(ERR_IO_PENDING, rv);
  rv = callback3.WaitForResult();
  EXPECT_EQ(OK, rv);
  EXPECT_FALSE(trans->IsReadyToRestartForAuth());

  response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);

  // The password prompt info should have been set in response->auth_challenge.
  EXPECT_FALSE(response->auth_challenge.get() == NULL);

  EXPECT_EQ(L"172.22.68.17:80", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"", response->auth_challenge->realm);
  EXPECT_EQ(L"ntlm", response->auth_challenge->scheme);

  TestCompletionCallback callback4;

  // Now enter the right password.
  rv = trans->RestartWithAuth(kTestingNTLM, kTestingNTLM, &callback4);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback4.WaitForResult();
  EXPECT_EQ(OK, rv);

  EXPECT_TRUE(trans->IsReadyToRestartForAuth());

  TestCompletionCallback callback5;

  // One more roundtrip
  rv = trans->RestartWithAuth(string16(), string16(), &callback5);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback5.WaitForResult();
  EXPECT_EQ(OK, rv);

  response = trans->GetResponseInfo();
  EXPECT_TRUE(response->auth_challenge.get() == NULL);
  EXPECT_EQ(13, response->headers->GetContentLength());
}
#endif  // NTLM_PORTABLE

// Test reading a server response which has only headers, and no body.
// After some maximum number of bytes is consumed, the transaction should
// fail with ERR_RESPONSE_HEADERS_TOO_BIG.
TEST_F(HttpNetworkTransactionTest, LargeHeadersNoBody) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  // Respond with 300 kb of headers (we should fail after 256 kb).
  std::string large_headers_string;
  FillLargeHeadersString(&large_headers_string, 300 * 1024);

  MockRead data_reads[] = {
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead(true, large_headers_string.data(), large_headers_string.size()),
    MockRead("\r\nBODY"),
    MockRead(false, OK),
  };
  StaticSocketDataProvider data(data_reads, arraysize(data_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(ERR_RESPONSE_HEADERS_TOO_BIG, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_TRUE(response == NULL);
}

// Make sure that we don't try to reuse a TCPClientSocket when failing to
// establish tunnel.
// http://code.google.com/p/chromium/issues/detail?id=3772
TEST_F(HttpNetworkTransactionTest, DontRecycleTransportSocketForSSLTunnel) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  // Configure against proxy server "myproxy:70".
  SessionDependencies session_deps(ProxyService::CreateFixed("myproxy:70"));

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  // Since we have proxy, should try to establish tunnel.
  MockWrite data_writes1[] = {
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),
  };

  // The proxy responds to the connect with a 404, using a persistent
  // connection. Usually a proxy would return 501 (not implemented),
  // or 200 (tunnel established).
  MockRead data_reads1[] = {
    MockRead("HTTP/1.1 404 Not Found\r\n"),
    MockRead("Content-Length: 10\r\n\r\n"),
    MockRead(false, ERR_UNEXPECTED),  // Should not be reached.
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  session_deps.socket_factory.AddSocketDataProvider(&data1);

  TestCompletionCallback callback1;

  int rv = trans->Start(&request, &callback1, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(ERR_TUNNEL_CONNECTION_FAILED, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_TRUE(response == NULL);

  // Empty the current queue.  This is necessary because idle sockets are
  // added to the connection pool asynchronously with a PostTask.
  MessageLoop::current()->RunAllPending();

  // We now check to make sure the TCPClientSocket was not added back to
  // the pool.
  EXPECT_EQ(0, session->transport_socket_pool()->IdleSocketCount());
  trans.reset();
  MessageLoop::current()->RunAllPending();
  // Make sure that the socket didn't get recycled after calling the destructor.
  EXPECT_EQ(0, session->transport_socket_pool()->IdleSocketCount());
}

// Make sure that we recycle a socket after reading all of the response body.
TEST_F(HttpNetworkTransactionTest, RecycleSocket) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  MockRead data_reads[] = {
    // A part of the response body is received with the response headers.
    MockRead("HTTP/1.1 200 OK\r\nContent-Length: 11\r\n\r\nhel"),
    // The rest of the response body is received in two parts.
    MockRead("lo"),
    MockRead(" world"),
    MockRead("junk"),  // Should not be read!!
    MockRead(false, OK),
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_TRUE(response != NULL);

  EXPECT_TRUE(response->headers != NULL);
  std::string status_line = response->headers->GetStatusLine();
  EXPECT_EQ("HTTP/1.1 200 OK", status_line);

  EXPECT_EQ(0, session->transport_socket_pool()->IdleSocketCount());

  std::string response_data;
  rv = ReadTransaction(trans.get(), &response_data);
  EXPECT_EQ(OK, rv);
  EXPECT_EQ("hello world", response_data);

  // Empty the current queue.  This is necessary because idle sockets are
  // added to the connection pool asynchronously with a PostTask.
  MessageLoop::current()->RunAllPending();

  // We now check to make sure the socket was added back to the pool.
  EXPECT_EQ(1, session->transport_socket_pool()->IdleSocketCount());
}

// Make sure that we recycle a SSL socket after reading all of the response
// body.
TEST_F(HttpNetworkTransactionTest, RecycleSSLSocket) {
  SessionDependencies session_deps;
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  MockWrite data_writes[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads[] = {
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead("Content-Length: 11\r\n\r\n"),
    MockRead("hello world"),
    MockRead(false, OK),
  };

  SSLSocketDataProvider ssl(true, OK);
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));
  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback, BoundNetLog());

  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback.WaitForResult());

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());

  EXPECT_EQ(0, session->transport_socket_pool()->IdleSocketCount());

  std::string response_data;
  rv = ReadTransaction(trans.get(), &response_data);
  EXPECT_EQ(OK, rv);
  EXPECT_EQ("hello world", response_data);

  // Empty the current queue.  This is necessary because idle sockets are
  // added to the connection pool asynchronously with a PostTask.
  MessageLoop::current()->RunAllPending();

  // We now check to make sure the socket was added back to the pool.
  EXPECT_EQ(1, session->ssl_socket_pool()->IdleSocketCount());
}

// Grab a SSL socket, use it, and put it back into the pool.  Then, reuse it
// from the pool and make sure that we recover okay.
TEST_F(HttpNetworkTransactionTest, RecycleDeadSSLSocket) {
  SessionDependencies session_deps;
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  MockWrite data_writes[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads[] = {
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead("Content-Length: 11\r\n\r\n"),
    MockRead(false, ERR_TEST_PEER_CLOSE_AFTER_NEXT_MOCK_READ),
    MockRead("hello world"),
    MockRead(true, 0, 0)   // EOF
  };

  SSLSocketDataProvider ssl(true, OK);
  SSLSocketDataProvider ssl2(true, OK);
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl2);

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  StaticSocketDataProvider data2(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);
  session_deps.socket_factory.AddSocketDataProvider(&data2);

  TestCompletionCallback callback;

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));
  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback, BoundNetLog());

  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback.WaitForResult());

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());

  EXPECT_EQ(0, session->transport_socket_pool()->IdleSocketCount());

  std::string response_data;
  rv = ReadTransaction(trans.get(), &response_data);
  EXPECT_EQ(OK, rv);
  EXPECT_EQ("hello world", response_data);

  // Empty the current queue.  This is necessary because idle sockets are
  // added to the connection pool asynchronously with a PostTask.
  MessageLoop::current()->RunAllPending();

  // We now check to make sure the socket was added back to the pool.
  EXPECT_EQ(1, session->ssl_socket_pool()->IdleSocketCount());

  // Now start the second transaction, which should reuse the previous socket.

  trans.reset(new HttpNetworkTransaction(session));

  rv = trans->Start(&request, &callback, BoundNetLog());

  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback.WaitForResult());

  response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());

  EXPECT_EQ(0, session->transport_socket_pool()->IdleSocketCount());

  rv = ReadTransaction(trans.get(), &response_data);
  EXPECT_EQ(OK, rv);
  EXPECT_EQ("hello world", response_data);

  // Empty the current queue.  This is necessary because idle sockets are
  // added to the connection pool asynchronously with a PostTask.
  MessageLoop::current()->RunAllPending();

  // We now check to make sure the socket was added back to the pool.
  EXPECT_EQ(1, session->ssl_socket_pool()->IdleSocketCount());
}

// Make sure that we recycle a socket after a zero-length response.
// http://crbug.com/9880
TEST_F(HttpNetworkTransactionTest, RecycleSocketAfterZeroContentLength) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/csi?v=3&s=web&action=&"
                     "tran=undefined&ei=mAXcSeegAo-SMurloeUN&"
                     "e=17259,18167,19592,19773,19981,20133,20173,20233&"
                     "rt=prt.2642,ol.2649,xjs.2951");
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  MockRead data_reads[] = {
    MockRead("HTTP/1.1 204 No Content\r\n"
             "Content-Length: 0\r\n"
             "Content-Type: text/html\r\n\r\n"),
    MockRead("junk"),  // Should not be read!!
    MockRead(false, OK),
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_TRUE(response != NULL);

  EXPECT_TRUE(response->headers != NULL);
  std::string status_line = response->headers->GetStatusLine();
  EXPECT_EQ("HTTP/1.1 204 No Content", status_line);

  EXPECT_EQ(0, session->transport_socket_pool()->IdleSocketCount());

  std::string response_data;
  rv = ReadTransaction(trans.get(), &response_data);
  EXPECT_EQ(OK, rv);
  EXPECT_EQ("", response_data);

  // Empty the current queue.  This is necessary because idle sockets are
  // added to the connection pool asynchronously with a PostTask.
  MessageLoop::current()->RunAllPending();

  // We now check to make sure the socket was added back to the pool.
  EXPECT_EQ(1, session->transport_socket_pool()->IdleSocketCount());
}

TEST_F(HttpNetworkTransactionTest, ResendRequestOnWriteBodyError) {
  HttpRequestInfo request[2];
  // Transaction 1: a GET request that succeeds.  The socket is recycled
  // after use.
  request[0].method = "GET";
  request[0].url = GURL("http://www.google.com/");
  request[0].load_flags = 0;
  // Transaction 2: a POST request.  Reuses the socket kept alive from
  // transaction 1.  The first attempts fails when writing the POST data.
  // This causes the transaction to retry with a new socket.  The second
  // attempt succeeds.
  request[1].method = "POST";
  request[1].url = GURL("http://www.google.com/login.cgi");
  request[1].upload_data = new UploadData;
  request[1].upload_data->AppendBytes("foo", 3);
  request[1].load_flags = 0;

  SessionDependencies session_deps;
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  // The first socket is used for transaction 1 and the first attempt of
  // transaction 2.

  // The response of transaction 1.
  MockRead data_reads1[] = {
    MockRead("HTTP/1.1 200 OK\r\nContent-Length: 11\r\n\r\n"),
    MockRead("hello world"),
    MockRead(false, OK),
  };
  // The mock write results of transaction 1 and the first attempt of
  // transaction 2.
  MockWrite data_writes1[] = {
    MockWrite(false, 64),  // GET
    MockWrite(false, 93),  // POST
    MockWrite(false, ERR_CONNECTION_ABORTED),  // POST data
  };
  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));

  // The second socket is used for the second attempt of transaction 2.

  // The response of transaction 2.
  MockRead data_reads2[] = {
    MockRead("HTTP/1.1 200 OK\r\nContent-Length: 7\r\n\r\n"),
    MockRead("welcome"),
    MockRead(false, OK),
  };
  // The mock write results of the second attempt of transaction 2.
  MockWrite data_writes2[] = {
    MockWrite(false, 93),  // POST
    MockWrite(false, 3),  // POST data
  };
  StaticSocketDataProvider data2(data_reads2, arraysize(data_reads2),
                                 data_writes2, arraysize(data_writes2));

  session_deps.socket_factory.AddSocketDataProvider(&data1);
  session_deps.socket_factory.AddSocketDataProvider(&data2);

  const char* kExpectedResponseData[] = {
    "hello world", "welcome"
  };

  for (int i = 0; i < 2; ++i) {
    scoped_ptr<HttpTransaction> trans(
        new HttpNetworkTransaction(session));

    TestCompletionCallback callback;

    int rv = trans->Start(&request[i], &callback, BoundNetLog());
    EXPECT_EQ(ERR_IO_PENDING, rv);

    rv = callback.WaitForResult();
    EXPECT_EQ(OK, rv);

    const HttpResponseInfo* response = trans->GetResponseInfo();
    EXPECT_TRUE(response != NULL);

    EXPECT_TRUE(response->headers != NULL);
    EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());

    std::string response_data;
    rv = ReadTransaction(trans.get(), &response_data);
    EXPECT_EQ(OK, rv);
    EXPECT_EQ(kExpectedResponseData[i], response_data);
  }
}

// Test the request-challenge-retry sequence for basic auth when there is
// an identity in the URL. The request should be sent as normal, but when
// it fails the identity from the URL is used to answer the challenge.
TEST_F(HttpNetworkTransactionTest, AuthIdentityInURL) {
  HttpRequestInfo request;
  request.method = "GET";
  // Note: the URL has a username:password in it.
  request.url = GURL("http://foo:b@r@www.google.com/");

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  // The password contains an escaped character -- for this test to pass it
  // will need to be unescaped by HttpNetworkTransaction.
  EXPECT_EQ("b%40r", request.url.password());

  request.load_flags = LOAD_NORMAL;

  MockWrite data_writes1[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads1[] = {
    MockRead("HTTP/1.0 401 Unauthorized\r\n"),
    MockRead("WWW-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("Content-Length: 10\r\n\r\n"),
    MockRead(false, ERR_FAILED),
  };

  // After the challenge above, the transaction will be restarted using the
  // identity from the url (foo, b@r) to answer the challenge.
  MockWrite data_writes2[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Authorization: Basic Zm9vOmJAcg==\r\n\r\n"),
  };

  MockRead data_reads2[] = {
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  StaticSocketDataProvider data2(data_reads2, arraysize(data_reads2),
                                 data_writes2, arraysize(data_writes2));
  session_deps.socket_factory.AddSocketDataProvider(&data1);
  session_deps.socket_factory.AddSocketDataProvider(&data2);

  TestCompletionCallback callback1;

  int rv = trans->Start(&request, &callback1, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  EXPECT_TRUE(trans->IsReadyToRestartForAuth());
  TestCompletionCallback callback2;
  rv = trans->RestartWithAuth(string16(), string16(), &callback2);
  EXPECT_EQ(ERR_IO_PENDING, rv);
  rv = callback2.WaitForResult();
  EXPECT_EQ(OK, rv);
  EXPECT_FALSE(trans->IsReadyToRestartForAuth());

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);

  // There is no challenge info, since the identity in URL worked.
  EXPECT_TRUE(response->auth_challenge.get() == NULL);

  EXPECT_EQ(100, response->headers->GetContentLength());

  // Empty the current queue.
  MessageLoop::current()->RunAllPending();
}

// Test the request-challenge-retry sequence for basic auth when there is
// an incorrect identity in the URL. The identity from the URL should be used
// only once.
TEST_F(HttpNetworkTransactionTest, WrongAuthIdentityInURL) {
  HttpRequestInfo request;
  request.method = "GET";
  // Note: the URL has a username:password in it.  The password "baz" is
  // wrong (should be "bar").
  request.url = GURL("http://foo:baz@www.google.com/");

  request.load_flags = LOAD_NORMAL;

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockWrite data_writes1[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads1[] = {
    MockRead("HTTP/1.0 401 Unauthorized\r\n"),
    MockRead("WWW-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("Content-Length: 10\r\n\r\n"),
    MockRead(false, ERR_FAILED),
  };

  // After the challenge above, the transaction will be restarted using the
  // identity from the url (foo, baz) to answer the challenge.
  MockWrite data_writes2[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Authorization: Basic Zm9vOmJheg==\r\n\r\n"),
  };

  MockRead data_reads2[] = {
    MockRead("HTTP/1.0 401 Unauthorized\r\n"),
    MockRead("WWW-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("Content-Length: 10\r\n\r\n"),
    MockRead(false, ERR_FAILED),
  };

  // After the challenge above, the transaction will be restarted using the
  // identity supplied by the user (foo, bar) to answer the challenge.
  MockWrite data_writes3[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Authorization: Basic Zm9vOmJhcg==\r\n\r\n"),
  };

  MockRead data_reads3[] = {
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  StaticSocketDataProvider data2(data_reads2, arraysize(data_reads2),
                                 data_writes2, arraysize(data_writes2));
  StaticSocketDataProvider data3(data_reads3, arraysize(data_reads3),
                                 data_writes3, arraysize(data_writes3));
  session_deps.socket_factory.AddSocketDataProvider(&data1);
  session_deps.socket_factory.AddSocketDataProvider(&data2);
  session_deps.socket_factory.AddSocketDataProvider(&data3);

  TestCompletionCallback callback1;

  int rv = trans->Start(&request, &callback1, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  EXPECT_TRUE(trans->IsReadyToRestartForAuth());
  TestCompletionCallback callback2;
  rv = trans->RestartWithAuth(string16(), string16(), &callback2);
  EXPECT_EQ(ERR_IO_PENDING, rv);
  rv = callback2.WaitForResult();
  EXPECT_EQ(OK, rv);
  EXPECT_FALSE(trans->IsReadyToRestartForAuth());

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);
  // The password prompt info should have been set in response->auth_challenge.
  EXPECT_FALSE(response->auth_challenge.get() == NULL);

  EXPECT_EQ(L"www.google.com:80", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"MyRealm1", response->auth_challenge->realm);
  EXPECT_EQ(L"basic", response->auth_challenge->scheme);

  TestCompletionCallback callback3;
  rv = trans->RestartWithAuth(kFoo, kBar, &callback3);
  EXPECT_EQ(ERR_IO_PENDING, rv);
  rv = callback3.WaitForResult();
  EXPECT_EQ(OK, rv);
  EXPECT_FALSE(trans->IsReadyToRestartForAuth());

  response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);

  // There is no challenge info, since the identity worked.
  EXPECT_TRUE(response->auth_challenge.get() == NULL);

  EXPECT_EQ(100, response->headers->GetContentLength());

  // Empty the current queue.
  MessageLoop::current()->RunAllPending();
}

// Test that previously tried username/passwords for a realm get re-used.
TEST_F(HttpNetworkTransactionTest, BasicAuthCacheAndPreauth) {
  SessionDependencies session_deps;
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  // Transaction 1: authenticate (foo, bar) on MyRealm1
  {
    HttpRequestInfo request;
    request.method = "GET";
    request.url = GURL("http://www.google.com/x/y/z");
    request.load_flags = 0;

    scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

    MockWrite data_writes1[] = {
      MockWrite("GET /x/y/z HTTP/1.1\r\n"
                "Host: www.google.com\r\n"
                "Connection: keep-alive\r\n\r\n"),
    };

    MockRead data_reads1[] = {
      MockRead("HTTP/1.0 401 Unauthorized\r\n"),
      MockRead("WWW-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
      MockRead("Content-Length: 10000\r\n\r\n"),
      MockRead(false, ERR_FAILED),
    };

    // Resend with authorization (username=foo, password=bar)
    MockWrite data_writes2[] = {
      MockWrite("GET /x/y/z HTTP/1.1\r\n"
                "Host: www.google.com\r\n"
                "Connection: keep-alive\r\n"
                "Authorization: Basic Zm9vOmJhcg==\r\n\r\n"),
    };

    // Sever accepts the authorization.
    MockRead data_reads2[] = {
      MockRead("HTTP/1.0 200 OK\r\n"),
      MockRead("Content-Length: 100\r\n\r\n"),
      MockRead(false, OK),
    };

    StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                   data_writes1, arraysize(data_writes1));
    StaticSocketDataProvider data2(data_reads2, arraysize(data_reads2),
                                   data_writes2, arraysize(data_writes2));
    session_deps.socket_factory.AddSocketDataProvider(&data1);
    session_deps.socket_factory.AddSocketDataProvider(&data2);

    TestCompletionCallback callback1;

    int rv = trans->Start(&request, &callback1, BoundNetLog());
    EXPECT_EQ(ERR_IO_PENDING, rv);

    rv = callback1.WaitForResult();
    EXPECT_EQ(OK, rv);

    const HttpResponseInfo* response = trans->GetResponseInfo();
    EXPECT_FALSE(response == NULL);

    // The password prompt info should have been set in
    // response->auth_challenge.
    EXPECT_FALSE(response->auth_challenge.get() == NULL);

    EXPECT_EQ(L"www.google.com:80", response->auth_challenge->host_and_port);
    EXPECT_EQ(L"MyRealm1", response->auth_challenge->realm);
    EXPECT_EQ(L"basic", response->auth_challenge->scheme);

    TestCompletionCallback callback2;

    rv = trans->RestartWithAuth(kFoo, kBar, &callback2);
    EXPECT_EQ(ERR_IO_PENDING, rv);

    rv = callback2.WaitForResult();
    EXPECT_EQ(OK, rv);

    response = trans->GetResponseInfo();
    EXPECT_FALSE(response == NULL);
    EXPECT_TRUE(response->auth_challenge.get() == NULL);
    EXPECT_EQ(100, response->headers->GetContentLength());
  }

  // ------------------------------------------------------------------------

  // Transaction 2: authenticate (foo2, bar2) on MyRealm2
  {
    HttpRequestInfo request;
    request.method = "GET";
    // Note that Transaction 1 was at /x/y/z, so this is in the same
    // protection space as MyRealm1.
    request.url = GURL("http://www.google.com/x/y/a/b");
    request.load_flags = 0;

    scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

    MockWrite data_writes1[] = {
      MockWrite("GET /x/y/a/b HTTP/1.1\r\n"
                "Host: www.google.com\r\n"
                "Connection: keep-alive\r\n"
                // Send preemptive authorization for MyRealm1
                "Authorization: Basic Zm9vOmJhcg==\r\n\r\n"),
    };

    // The server didn't like the preemptive authorization, and
    // challenges us for a different realm (MyRealm2).
    MockRead data_reads1[] = {
      MockRead("HTTP/1.0 401 Unauthorized\r\n"),
      MockRead("WWW-Authenticate: Basic realm=\"MyRealm2\"\r\n"),
      MockRead("Content-Length: 10000\r\n\r\n"),
      MockRead(false, ERR_FAILED),
    };

    // Resend with authorization for MyRealm2 (username=foo2, password=bar2)
    MockWrite data_writes2[] = {
      MockWrite("GET /x/y/a/b HTTP/1.1\r\n"
                "Host: www.google.com\r\n"
                "Connection: keep-alive\r\n"
                "Authorization: Basic Zm9vMjpiYXIy\r\n\r\n"),
    };

    // Sever accepts the authorization.
    MockRead data_reads2[] = {
      MockRead("HTTP/1.0 200 OK\r\n"),
      MockRead("Content-Length: 100\r\n\r\n"),
      MockRead(false, OK),
    };

    StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                   data_writes1, arraysize(data_writes1));
    StaticSocketDataProvider data2(data_reads2, arraysize(data_reads2),
                                   data_writes2, arraysize(data_writes2));
    session_deps.socket_factory.AddSocketDataProvider(&data1);
    session_deps.socket_factory.AddSocketDataProvider(&data2);

    TestCompletionCallback callback1;

    int rv = trans->Start(&request, &callback1, BoundNetLog());
    EXPECT_EQ(ERR_IO_PENDING, rv);

    rv = callback1.WaitForResult();
    EXPECT_EQ(OK, rv);

    const HttpResponseInfo* response = trans->GetResponseInfo();
    EXPECT_FALSE(response == NULL);

    // The password prompt info should have been set in
    // response->auth_challenge.
    EXPECT_FALSE(response->auth_challenge.get() == NULL);

    EXPECT_EQ(L"www.google.com:80", response->auth_challenge->host_and_port);
    EXPECT_EQ(L"MyRealm2", response->auth_challenge->realm);
    EXPECT_EQ(L"basic", response->auth_challenge->scheme);

    TestCompletionCallback callback2;

    rv = trans->RestartWithAuth(kFoo2, kBar2, &callback2);
    EXPECT_EQ(ERR_IO_PENDING, rv);

    rv = callback2.WaitForResult();
    EXPECT_EQ(OK, rv);

    response = trans->GetResponseInfo();
    EXPECT_FALSE(response == NULL);
    EXPECT_TRUE(response->auth_challenge.get() == NULL);
    EXPECT_EQ(100, response->headers->GetContentLength());
  }

  // ------------------------------------------------------------------------

  // Transaction 3: Resend a request in MyRealm's protection space --
  // succeed with preemptive authorization.
  {
    HttpRequestInfo request;
    request.method = "GET";
    request.url = GURL("http://www.google.com/x/y/z2");
    request.load_flags = 0;

    scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

    MockWrite data_writes1[] = {
      MockWrite("GET /x/y/z2 HTTP/1.1\r\n"
                "Host: www.google.com\r\n"
                "Connection: keep-alive\r\n"
                // The authorization for MyRealm1 gets sent preemptively
                // (since the url is in the same protection space)
                "Authorization: Basic Zm9vOmJhcg==\r\n\r\n"),
    };

    // Sever accepts the preemptive authorization
    MockRead data_reads1[] = {
      MockRead("HTTP/1.0 200 OK\r\n"),
      MockRead("Content-Length: 100\r\n\r\n"),
      MockRead(false, OK),
    };

    StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                   data_writes1, arraysize(data_writes1));
    session_deps.socket_factory.AddSocketDataProvider(&data1);

    TestCompletionCallback callback1;

    int rv = trans->Start(&request, &callback1, BoundNetLog());
    EXPECT_EQ(ERR_IO_PENDING, rv);

    rv = callback1.WaitForResult();
    EXPECT_EQ(OK, rv);

    const HttpResponseInfo* response = trans->GetResponseInfo();
    EXPECT_FALSE(response == NULL);

    EXPECT_TRUE(response->auth_challenge.get() == NULL);
    EXPECT_EQ(100, response->headers->GetContentLength());
  }

  // ------------------------------------------------------------------------

  // Transaction 4: request another URL in MyRealm (however the
  // url is not known to belong to the protection space, so no pre-auth).
  {
    HttpRequestInfo request;
    request.method = "GET";
    request.url = GURL("http://www.google.com/x/1");
    request.load_flags = 0;

    scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

    MockWrite data_writes1[] = {
      MockWrite("GET /x/1 HTTP/1.1\r\n"
                "Host: www.google.com\r\n"
                "Connection: keep-alive\r\n\r\n"),
    };

    MockRead data_reads1[] = {
      MockRead("HTTP/1.0 401 Unauthorized\r\n"),
      MockRead("WWW-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
      MockRead("Content-Length: 10000\r\n\r\n"),
      MockRead(false, ERR_FAILED),
    };

    // Resend with authorization from MyRealm's cache.
    MockWrite data_writes2[] = {
      MockWrite("GET /x/1 HTTP/1.1\r\n"
                "Host: www.google.com\r\n"
                "Connection: keep-alive\r\n"
                "Authorization: Basic Zm9vOmJhcg==\r\n\r\n"),
    };

    // Sever accepts the authorization.
    MockRead data_reads2[] = {
      MockRead("HTTP/1.0 200 OK\r\n"),
      MockRead("Content-Length: 100\r\n\r\n"),
      MockRead(false, OK),
    };

    StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                   data_writes1, arraysize(data_writes1));
    StaticSocketDataProvider data2(data_reads2, arraysize(data_reads2),
                                   data_writes2, arraysize(data_writes2));
    session_deps.socket_factory.AddSocketDataProvider(&data1);
    session_deps.socket_factory.AddSocketDataProvider(&data2);

    TestCompletionCallback callback1;

    int rv = trans->Start(&request, &callback1, BoundNetLog());
    EXPECT_EQ(ERR_IO_PENDING, rv);

    rv = callback1.WaitForResult();
    EXPECT_EQ(OK, rv);

    EXPECT_TRUE(trans->IsReadyToRestartForAuth());
    TestCompletionCallback callback2;
    rv = trans->RestartWithAuth(string16(), string16(), &callback2);
    EXPECT_EQ(ERR_IO_PENDING, rv);
    rv = callback2.WaitForResult();
    EXPECT_EQ(OK, rv);
    EXPECT_FALSE(trans->IsReadyToRestartForAuth());

    const HttpResponseInfo* response = trans->GetResponseInfo();
    EXPECT_FALSE(response == NULL);
    EXPECT_TRUE(response->auth_challenge.get() == NULL);
    EXPECT_EQ(100, response->headers->GetContentLength());
  }

  // ------------------------------------------------------------------------

  // Transaction 5: request a URL in MyRealm, but the server rejects the
  // cached identity. Should invalidate and re-prompt.
  {
    HttpRequestInfo request;
    request.method = "GET";
    request.url = GURL("http://www.google.com/p/q/t");
    request.load_flags = 0;

    scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

    MockWrite data_writes1[] = {
      MockWrite("GET /p/q/t HTTP/1.1\r\n"
                "Host: www.google.com\r\n"
                "Connection: keep-alive\r\n\r\n"),
    };

    MockRead data_reads1[] = {
      MockRead("HTTP/1.0 401 Unauthorized\r\n"),
      MockRead("WWW-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
      MockRead("Content-Length: 10000\r\n\r\n"),
      MockRead(false, ERR_FAILED),
    };

    // Resend with authorization from cache for MyRealm.
    MockWrite data_writes2[] = {
      MockWrite("GET /p/q/t HTTP/1.1\r\n"
                "Host: www.google.com\r\n"
                "Connection: keep-alive\r\n"
                "Authorization: Basic Zm9vOmJhcg==\r\n\r\n"),
    };

    // Sever rejects the authorization.
    MockRead data_reads2[] = {
      MockRead("HTTP/1.0 401 Unauthorized\r\n"),
      MockRead("WWW-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
      MockRead("Content-Length: 10000\r\n\r\n"),
      MockRead(false, ERR_FAILED),
    };

    // At this point we should prompt for new credentials for MyRealm.
    // Restart with username=foo3, password=foo4.
    MockWrite data_writes3[] = {
      MockWrite("GET /p/q/t HTTP/1.1\r\n"
                "Host: www.google.com\r\n"
                "Connection: keep-alive\r\n"
                "Authorization: Basic Zm9vMzpiYXIz\r\n\r\n"),
    };

    // Sever accepts the authorization.
    MockRead data_reads3[] = {
      MockRead("HTTP/1.0 200 OK\r\n"),
      MockRead("Content-Length: 100\r\n\r\n"),
      MockRead(false, OK),
    };

    StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                   data_writes1, arraysize(data_writes1));
    StaticSocketDataProvider data2(data_reads2, arraysize(data_reads2),
                                   data_writes2, arraysize(data_writes2));
    StaticSocketDataProvider data3(data_reads3, arraysize(data_reads3),
                                   data_writes3, arraysize(data_writes3));
    session_deps.socket_factory.AddSocketDataProvider(&data1);
    session_deps.socket_factory.AddSocketDataProvider(&data2);
    session_deps.socket_factory.AddSocketDataProvider(&data3);

    TestCompletionCallback callback1;

    int rv = trans->Start(&request, &callback1, BoundNetLog());
    EXPECT_EQ(ERR_IO_PENDING, rv);

    rv = callback1.WaitForResult();
    EXPECT_EQ(OK, rv);

    EXPECT_TRUE(trans->IsReadyToRestartForAuth());
    TestCompletionCallback callback2;
    rv = trans->RestartWithAuth(string16(), string16(), &callback2);
    EXPECT_EQ(ERR_IO_PENDING, rv);
    rv = callback2.WaitForResult();
    EXPECT_EQ(OK, rv);
    EXPECT_FALSE(trans->IsReadyToRestartForAuth());

    const HttpResponseInfo* response = trans->GetResponseInfo();
    EXPECT_FALSE(response == NULL);

    // The password prompt info should have been set in
    // response->auth_challenge.
    EXPECT_FALSE(response->auth_challenge.get() == NULL);

    EXPECT_EQ(L"www.google.com:80", response->auth_challenge->host_and_port);
    EXPECT_EQ(L"MyRealm1", response->auth_challenge->realm);
    EXPECT_EQ(L"basic", response->auth_challenge->scheme);

    TestCompletionCallback callback3;

    rv = trans->RestartWithAuth(kFoo3, kBar3, &callback3);
    EXPECT_EQ(ERR_IO_PENDING, rv);

    rv = callback3.WaitForResult();
    EXPECT_EQ(OK, rv);

    response = trans->GetResponseInfo();
    EXPECT_FALSE(response == NULL);
    EXPECT_TRUE(response->auth_challenge.get() == NULL);
    EXPECT_EQ(100, response->headers->GetContentLength());
  }
}

// Tests that nonce count increments when multiple auth attempts
// are started with the same nonce.
TEST_F(HttpNetworkTransactionTest, DigestPreAuthNonceCount) {
  SessionDependencies session_deps;
  HttpAuthHandlerDigest::Factory* digest_factory =
      new HttpAuthHandlerDigest::Factory();
  HttpAuthHandlerDigest::FixedNonceGenerator* nonce_generator =
      new HttpAuthHandlerDigest::FixedNonceGenerator("0123456789abcdef");
  digest_factory->set_nonce_generator(nonce_generator);
  session_deps.http_auth_handler_factory.reset(digest_factory);
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  // Transaction 1: authenticate (foo, bar) on MyRealm1
  {
    HttpRequestInfo request;
    request.method = "GET";
    request.url = GURL("http://www.google.com/x/y/z");
    request.load_flags = 0;

    scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

    MockWrite data_writes1[] = {
      MockWrite("GET /x/y/z HTTP/1.1\r\n"
                "Host: www.google.com\r\n"
                "Connection: keep-alive\r\n\r\n"),
    };

    MockRead data_reads1[] = {
      MockRead("HTTP/1.0 401 Unauthorized\r\n"),
      MockRead("WWW-Authenticate: Digest realm=\"digestive\", nonce=\"OU812\", "
               "algorithm=MD5, qop=\"auth\"\r\n\r\n"),
      MockRead(false, OK),
    };

    // Resend with authorization (username=foo, password=bar)
    MockWrite data_writes2[] = {
      MockWrite("GET /x/y/z HTTP/1.1\r\n"
                "Host: www.google.com\r\n"
                "Connection: keep-alive\r\n"
                "Authorization: Digest username=\"foo\", realm=\"digestive\", "
                "nonce=\"OU812\", uri=\"/x/y/z\", algorithm=MD5, "
                "response=\"03ffbcd30add722589c1de345d7a927f\", qop=auth, "
                "nc=00000001, cnonce=\"0123456789abcdef\"\r\n\r\n"),
    };

    // Sever accepts the authorization.
    MockRead data_reads2[] = {
      MockRead("HTTP/1.0 200 OK\r\n"),
      MockRead(false, OK),
    };

    StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                   data_writes1, arraysize(data_writes1));
    StaticSocketDataProvider data2(data_reads2, arraysize(data_reads2),
                                   data_writes2, arraysize(data_writes2));
    session_deps.socket_factory.AddSocketDataProvider(&data1);
    session_deps.socket_factory.AddSocketDataProvider(&data2);

    TestCompletionCallback callback1;

    int rv = trans->Start(&request, &callback1, BoundNetLog());
    EXPECT_EQ(ERR_IO_PENDING, rv);

    rv = callback1.WaitForResult();
    EXPECT_EQ(OK, rv);

    const HttpResponseInfo* response = trans->GetResponseInfo();
    ASSERT_FALSE(response == NULL);

    // The password prompt info should have been set in
    // response->auth_challenge.
    ASSERT_FALSE(response->auth_challenge.get() == NULL);

    EXPECT_EQ(L"www.google.com:80", response->auth_challenge->host_and_port);
    EXPECT_EQ(L"digestive", response->auth_challenge->realm);
    EXPECT_EQ(L"digest", response->auth_challenge->scheme);

    TestCompletionCallback callback2;

    rv = trans->RestartWithAuth(kFoo, kBar, &callback2);
    EXPECT_EQ(ERR_IO_PENDING, rv);

    rv = callback2.WaitForResult();
    EXPECT_EQ(OK, rv);

    response = trans->GetResponseInfo();
    ASSERT_FALSE(response == NULL);
    EXPECT_TRUE(response->auth_challenge.get() == NULL);
  }

  // ------------------------------------------------------------------------

  // Transaction 2: Request another resource in digestive's protection space.
  // This will preemptively add an Authorization header which should have an
  // "nc" value of 2 (as compared to 1 in the first use.
  {
    HttpRequestInfo request;
    request.method = "GET";
    // Note that Transaction 1 was at /x/y/z, so this is in the same
    // protection space as digest.
    request.url = GURL("http://www.google.com/x/y/a/b");
    request.load_flags = 0;

    scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

    MockWrite data_writes1[] = {
      MockWrite("GET /x/y/a/b HTTP/1.1\r\n"
                "Host: www.google.com\r\n"
                "Connection: keep-alive\r\n"
                "Authorization: Digest username=\"foo\", realm=\"digestive\", "
                "nonce=\"OU812\", uri=\"/x/y/a/b\", algorithm=MD5, "
                "response=\"d6f9a2c07d1c5df7b89379dca1269b35\", qop=auth, "
                "nc=00000002, cnonce=\"0123456789abcdef\"\r\n\r\n"),
    };

    // Sever accepts the authorization.
    MockRead data_reads1[] = {
      MockRead("HTTP/1.0 200 OK\r\n"),
      MockRead("Content-Length: 100\r\n\r\n"),
      MockRead(false, OK),
    };

    StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                   data_writes1, arraysize(data_writes1));
    session_deps.socket_factory.AddSocketDataProvider(&data1);

    TestCompletionCallback callback1;

    int rv = trans->Start(&request, &callback1, BoundNetLog());
    EXPECT_EQ(ERR_IO_PENDING, rv);

    rv = callback1.WaitForResult();
    EXPECT_EQ(OK, rv);

    const HttpResponseInfo* response = trans->GetResponseInfo();
    ASSERT_FALSE(response == NULL);
    EXPECT_TRUE(response->auth_challenge.get() == NULL);
  }
}

// Test the ResetStateForRestart() private method.
TEST_F(HttpNetworkTransactionTest, ResetStateForRestart) {
  // Create a transaction (the dependencies aren't important).
  SessionDependencies session_deps;
  scoped_ptr<HttpNetworkTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  // Setup some state (which we expect ResetStateForRestart() will clear).
  trans->read_buf_ = new IOBuffer(15);
  trans->read_buf_len_ = 15;
  trans->request_headers_.SetHeader("Authorization", "NTLM");

  // Setup state in response_
  HttpResponseInfo* response = &trans->response_;
  response->auth_challenge = new AuthChallengeInfo();
  response->ssl_info.cert_status = -15;
  response->response_time = base::Time::Now();
  response->was_cached = true;  // (Wouldn't ever actually be true...)

  { // Setup state for response_.vary_data
    HttpRequestInfo request;
    std::string temp("HTTP/1.1 200 OK\nVary: foo, bar\n\n");
    std::replace(temp.begin(), temp.end(), '\n', '\0');
    scoped_refptr<HttpResponseHeaders> headers(new HttpResponseHeaders(temp));
    request.extra_headers.SetHeader("Foo", "1");
    request.extra_headers.SetHeader("bar", "23");
    EXPECT_TRUE(response->vary_data.Init(request, *headers));
  }

  // Cause the above state to be reset.
  trans->ResetStateForRestart();

  // Verify that the state that needed to be reset, has been reset.
  EXPECT_TRUE(trans->read_buf_.get() == NULL);
  EXPECT_EQ(0, trans->read_buf_len_);
  EXPECT_TRUE(trans->request_headers_.IsEmpty());
  EXPECT_TRUE(response->auth_challenge.get() == NULL);
  EXPECT_TRUE(response->headers.get() == NULL);
  EXPECT_FALSE(response->was_cached);
  EXPECT_EQ(0, response->ssl_info.cert_status);
  EXPECT_FALSE(response->vary_data.is_valid());
}

// Test HTTPS connections to a site with a bad certificate
TEST_F(HttpNetworkTransactionTest, HTTPSBadCertificate) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockWrite data_writes[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads[] = {
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider ssl_bad_certificate;
  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  SSLSocketDataProvider ssl_bad(true, ERR_CERT_AUTHORITY_INVALID);
  SSLSocketDataProvider ssl(true, OK);

  session_deps.socket_factory.AddSocketDataProvider(&ssl_bad_certificate);
  session_deps.socket_factory.AddSocketDataProvider(&data);
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl_bad);
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(ERR_CERT_AUTHORITY_INVALID, rv);

  rv = trans->RestartIgnoringLastError(&callback);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();

  EXPECT_FALSE(response == NULL);
  EXPECT_EQ(100, response->headers->GetContentLength());
}

// Test HTTPS connections to a site with a bad certificate, going through a
// proxy
TEST_F(HttpNetworkTransactionTest, HTTPSBadCertificateViaProxy) {
  SessionDependencies session_deps(ProxyService::CreateFixed("myproxy:70"));

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  MockWrite proxy_writes[] = {
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),
  };

  MockRead proxy_reads[] = {
    MockRead("HTTP/1.0 200 Connected\r\n\r\n"),
    MockRead(false, OK)
  };

  MockWrite data_writes[] = {
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads[] = {
    MockRead("HTTP/1.0 200 Connected\r\n\r\n"),
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider ssl_bad_certificate(
      proxy_reads, arraysize(proxy_reads),
      proxy_writes, arraysize(proxy_writes));
  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  SSLSocketDataProvider ssl_bad(true, ERR_CERT_AUTHORITY_INVALID);
  SSLSocketDataProvider ssl(true, OK);

  session_deps.socket_factory.AddSocketDataProvider(&ssl_bad_certificate);
  session_deps.socket_factory.AddSocketDataProvider(&data);
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl_bad);
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  TestCompletionCallback callback;

  for (int i = 0; i < 2; i++) {
    session_deps.socket_factory.ResetNextMockIndexes();

    scoped_ptr<HttpTransaction> trans(
        new HttpNetworkTransaction(CreateSession(&session_deps)));

    int rv = trans->Start(&request, &callback, BoundNetLog());
    EXPECT_EQ(ERR_IO_PENDING, rv);

    rv = callback.WaitForResult();
    EXPECT_EQ(ERR_CERT_AUTHORITY_INVALID, rv);

    rv = trans->RestartIgnoringLastError(&callback);
    EXPECT_EQ(ERR_IO_PENDING, rv);

    rv = callback.WaitForResult();
    EXPECT_EQ(OK, rv);

    const HttpResponseInfo* response = trans->GetResponseInfo();

    EXPECT_FALSE(response == NULL);
    EXPECT_EQ(100, response->headers->GetContentLength());
  }
}


// Test HTTPS connections to a site, going through an HTTPS proxy
TEST_F(HttpNetworkTransactionTest, HTTPSViaHttpsProxy) {
  SessionDependencies session_deps(ProxyService::CreateFixed("https://proxy:70"));

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  MockWrite data_writes[] = {
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads[] = {
    MockRead("HTTP/1.0 200 Connected\r\n\r\n"),
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  SSLSocketDataProvider proxy_ssl(true, OK);  // SSL to the proxy
  SSLSocketDataProvider tunnel_ssl(true, OK);  // SSL through the tunnel

  session_deps.socket_factory.AddSocketDataProvider(&data);
  session_deps.socket_factory.AddSSLSocketDataProvider(&proxy_ssl);
  session_deps.socket_factory.AddSSLSocketDataProvider(&tunnel_ssl);

  TestCompletionCallback callback;

  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
  const HttpResponseInfo* response = trans->GetResponseInfo();

  ASSERT_FALSE(response == NULL);

  EXPECT_TRUE(response->headers->IsKeepAlive());
  EXPECT_EQ(200, response->headers->response_code());
  EXPECT_EQ(100, response->headers->GetContentLength());
  EXPECT_TRUE(HttpVersion(1, 1) == response->headers->GetHttpVersion());
}

// Test an HTTPS Proxy's ability to redirect a CONNECT request
TEST_F(HttpNetworkTransactionTest, RedirectOfHttpsConnectViaHttpsProxy) {
  SessionDependencies session_deps(
      ProxyService::CreateFixed("https://proxy:70"));

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  MockWrite data_writes[] = {
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads[] = {
    MockRead("HTTP/1.1 302 Redirect\r\n"),
    MockRead("Location: http://login.example.com/\r\n"),
    MockRead("Content-Length: 0\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  SSLSocketDataProvider proxy_ssl(true, OK);  // SSL to the proxy

  session_deps.socket_factory.AddSocketDataProvider(&data);
  session_deps.socket_factory.AddSSLSocketDataProvider(&proxy_ssl);

  TestCompletionCallback callback;

  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
  const HttpResponseInfo* response = trans->GetResponseInfo();

  ASSERT_FALSE(response == NULL);

  EXPECT_EQ(302, response->headers->response_code());
  std::string url;
  EXPECT_TRUE(response->headers->IsRedirect(&url));
  EXPECT_EQ("http://login.example.com/", url);
}

// Test an HTTPS (SPDY) Proxy's ability to redirect a CONNECT request
TEST_F(HttpNetworkTransactionTest, RedirectOfHttpsConnectViaSpdyProxy) {
  SessionDependencies session_deps(
      ProxyService::CreateFixed("https://proxy:70"));

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  scoped_ptr<spdy::SpdyFrame> conn(ConstructSpdyConnect(NULL, 0, 1));
  scoped_ptr<spdy::SpdyFrame> goaway(ConstructSpdyRstStream(1, spdy::CANCEL));
  MockWrite data_writes[] = {
    CreateMockWrite(*conn.get(), 0, false),
  };

  static const char* const kExtraHeaders[] = {
    "location",
    "http://login.example.com/",
  };
  scoped_ptr<spdy::SpdyFrame> resp(
      ConstructSpdySynReplyError("302 Redirect", kExtraHeaders,
                                 arraysize(kExtraHeaders)/2, 1));
  MockRead data_reads[] = {
    CreateMockRead(*resp.get(), 1, false),
    MockRead(true, 0, 2),  // EOF
  };

  scoped_refptr<DelayedSocketData> data(
      new DelayedSocketData(
          1,  // wait for one write to finish before reading.
          data_reads, arraysize(data_reads),
          data_writes, arraysize(data_writes)));
  SSLSocketDataProvider proxy_ssl(true, OK);  // SSL to the proxy
  proxy_ssl.next_proto_status = SSLClientSocket::kNextProtoNegotiated;
  proxy_ssl.next_proto = "spdy/2";
  proxy_ssl.was_npn_negotiated = true;

  session_deps.socket_factory.AddSocketDataProvider(data.get());
  session_deps.socket_factory.AddSSLSocketDataProvider(&proxy_ssl);

  TestCompletionCallback callback;

  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
  const HttpResponseInfo* response = trans->GetResponseInfo();

  ASSERT_FALSE(response == NULL);

  EXPECT_EQ(302, response->headers->response_code());
  std::string url;
  EXPECT_TRUE(response->headers->IsRedirect(&url));
  EXPECT_EQ("http://login.example.com/", url);
}

// Test an HTTPS Proxy's ability to provide a response to a CONNECT request
TEST_F(HttpNetworkTransactionTest, ErrorResponseTofHttpsConnectViaHttpsProxy) {
  SessionDependencies session_deps(
      ProxyService::CreateFixed("https://proxy:70"));

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  MockWrite data_writes[] = {
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads[] = {
    MockRead("HTTP/1.1 404 Not Found\r\n"),
    MockRead("Content-Length: 23\r\n\r\n"),
    MockRead("The host does not exist"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  SSLSocketDataProvider proxy_ssl(true, OK);  // SSL to the proxy

  session_deps.socket_factory.AddSocketDataProvider(&data);
  session_deps.socket_factory.AddSSLSocketDataProvider(&proxy_ssl);

  TestCompletionCallback callback;

  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
  const HttpResponseInfo* response = trans->GetResponseInfo();

  ASSERT_FALSE(response == NULL);

  EXPECT_EQ(404, response->headers->response_code());
  EXPECT_EQ(23, response->headers->GetContentLength());
  EXPECT_TRUE(HttpVersion(1, 1) == response->headers->GetHttpVersion());
  EXPECT_FALSE(response->ssl_info.is_valid());

  std::string response_data;
  ASSERT_EQ(OK, ReadTransaction(trans.get(), &response_data));
  EXPECT_EQ("The host does not exist", response_data);
}

// Test an HTTPS (SPDY) Proxy's ability to provide a response to a CONNECT
// request
TEST_F(HttpNetworkTransactionTest, ErrorResponseTofHttpsConnectViaSpdyProxy) {
  SessionDependencies session_deps(
      ProxyService::CreateFixed("https://proxy:70"));

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  scoped_ptr<spdy::SpdyFrame> conn(ConstructSpdyConnect(NULL, 0, 1));
  scoped_ptr<spdy::SpdyFrame> goaway(ConstructSpdyRstStream(1, spdy::CANCEL));
  MockWrite data_writes[] = {
    CreateMockWrite(*conn.get(), 0, false),
  };

  static const char* const kExtraHeaders[] = {
    "location",
    "http://login.example.com/",
  };
  scoped_ptr<spdy::SpdyFrame> resp(
      ConstructSpdySynReplyError("404 Not Found", kExtraHeaders,
                                 arraysize(kExtraHeaders)/2, 1));
  scoped_ptr<spdy::SpdyFrame> body(
      ConstructSpdyBodyFrame(1, "The host does not exist", 23, true));
  MockRead data_reads[] = {
    CreateMockRead(*resp.get(), 1, false),
    CreateMockRead(*body.get(), 2, false),
    MockRead(true, 0, 3),  // EOF
  };

  scoped_refptr<DelayedSocketData> data(
      new DelayedSocketData(
          1,  // wait for one write to finish before reading.
          data_reads, arraysize(data_reads),
          data_writes, arraysize(data_writes)));
  SSLSocketDataProvider proxy_ssl(true, OK);  // SSL to the proxy
  proxy_ssl.next_proto_status = SSLClientSocket::kNextProtoNegotiated;
  proxy_ssl.next_proto = "spdy/2";
  proxy_ssl.was_npn_negotiated = true;

  session_deps.socket_factory.AddSocketDataProvider(data.get());
  session_deps.socket_factory.AddSSLSocketDataProvider(&proxy_ssl);

  TestCompletionCallback callback;

  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
  const HttpResponseInfo* response = trans->GetResponseInfo();

  ASSERT_FALSE(response == NULL);

  EXPECT_EQ(404, response->headers->response_code());
  EXPECT_FALSE(response->ssl_info.is_valid());

  std::string response_data;
  ASSERT_EQ(OK, ReadTransaction(trans.get(), &response_data));
  EXPECT_EQ("The host does not exist", response_data);
}

// Test HTTPS connections to a site with a bad certificate, going through an
// HTTPS proxy
TEST_F(HttpNetworkTransactionTest, HTTPSBadCertificateViaHttpsProxy) {
  SessionDependencies session_deps(ProxyService::CreateFixed("https://proxy:70"));

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  // Attempt to fetch the URL from a server with a bad cert
  MockWrite bad_cert_writes[] = {
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),
  };

  MockRead bad_cert_reads[] = {
    MockRead("HTTP/1.0 200 Connected\r\n\r\n"),
    MockRead(false, OK)
  };

  // Attempt to fetch the URL with a good cert
  MockWrite good_data_writes[] = {
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),
  };

  MockRead good_cert_reads[] = {
    MockRead("HTTP/1.0 200 Connected\r\n\r\n"),
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider ssl_bad_certificate(
      bad_cert_reads, arraysize(bad_cert_reads),
      bad_cert_writes, arraysize(bad_cert_writes));
  StaticSocketDataProvider data(good_cert_reads, arraysize(good_cert_reads),
                                good_data_writes, arraysize(good_data_writes));
  SSLSocketDataProvider ssl_bad(true, ERR_CERT_AUTHORITY_INVALID);
  SSLSocketDataProvider ssl(true, OK);

  // SSL to the proxy, then CONNECT request, then SSL with bad certificate
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);
  session_deps.socket_factory.AddSocketDataProvider(&ssl_bad_certificate);
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl_bad);

  // SSL to the proxy, then CONNECT request, then valid SSL certificate
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);
  session_deps.socket_factory.AddSocketDataProvider(&data);
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  TestCompletionCallback callback;

  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(ERR_CERT_AUTHORITY_INVALID, rv);

  rv = trans->RestartIgnoringLastError(&callback);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();

  EXPECT_FALSE(response == NULL);
  EXPECT_EQ(100, response->headers->GetContentLength());
}

TEST_F(HttpNetworkTransactionTest, BuildRequest_UserAgent) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.extra_headers.SetHeader(HttpRequestHeaders::kUserAgent,
                                  "Chromium Ultra Awesome X Edition");

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockWrite data_writes[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "User-Agent: Chromium Ultra Awesome X Edition\r\n\r\n"),
  };

  // Lastly, the server responds with the actual content.
  MockRead data_reads[] = {
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
}

TEST_F(HttpNetworkTransactionTest, BuildRequest_UserAgentOverTunnel) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.extra_headers.SetHeader(HttpRequestHeaders::kUserAgent,
                                  "Chromium Ultra Awesome X Edition");

  SessionDependencies session_deps(ProxyService::CreateFixed("myproxy:70"));
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockWrite data_writes[] = {
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n"
              "User-Agent: Chromium Ultra Awesome X Edition\r\n\r\n"),
  };
  MockRead data_reads[] = {
    // Return an error, so the transaction stops here (this test isn't
    // interested in the rest).
    MockRead("HTTP/1.1 407 Proxy Authentication Required\r\n"),
    MockRead("Proxy-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("Proxy-Connection: close\r\n\r\n"),
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
}

TEST_F(HttpNetworkTransactionTest, BuildRequest_Referer) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;
  request.referrer = GURL("http://the.previous.site.com/");

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockWrite data_writes[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Referer: http://the.previous.site.com/\r\n\r\n"),
  };

  // Lastly, the server responds with the actual content.
  MockRead data_reads[] = {
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
}

TEST_F(HttpNetworkTransactionTest, BuildRequest_PostContentLengthZero) {
  HttpRequestInfo request;
  request.method = "POST";
  request.url = GURL("http://www.google.com/");

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockWrite data_writes[] = {
    MockWrite("POST / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Content-Length: 0\r\n\r\n"),
  };

  // Lastly, the server responds with the actual content.
  MockRead data_reads[] = {
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
}

TEST_F(HttpNetworkTransactionTest, BuildRequest_PutContentLengthZero) {
  HttpRequestInfo request;
  request.method = "PUT";
  request.url = GURL("http://www.google.com/");

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockWrite data_writes[] = {
    MockWrite("PUT / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Content-Length: 0\r\n\r\n"),
  };

  // Lastly, the server responds with the actual content.
  MockRead data_reads[] = {
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
}

TEST_F(HttpNetworkTransactionTest, BuildRequest_HeadContentLengthZero) {
  HttpRequestInfo request;
  request.method = "HEAD";
  request.url = GURL("http://www.google.com/");

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockWrite data_writes[] = {
    MockWrite("HEAD / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Content-Length: 0\r\n\r\n"),
  };

  // Lastly, the server responds with the actual content.
  MockRead data_reads[] = {
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
}

TEST_F(HttpNetworkTransactionTest, BuildRequest_CacheControlNoCache) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = LOAD_BYPASS_CACHE;

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockWrite data_writes[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Pragma: no-cache\r\n"
              "Cache-Control: no-cache\r\n\r\n"),
  };

  // Lastly, the server responds with the actual content.
  MockRead data_reads[] = {
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
}

TEST_F(HttpNetworkTransactionTest,
       BuildRequest_CacheControlValidateCache) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = LOAD_VALIDATE_CACHE;

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockWrite data_writes[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Cache-Control: max-age=0\r\n\r\n"),
  };

  // Lastly, the server responds with the actual content.
  MockRead data_reads[] = {
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
}

TEST_F(HttpNetworkTransactionTest, BuildRequest_ExtraHeaders) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.extra_headers.SetHeader("FooHeader", "Bar");

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockWrite data_writes[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "FooHeader: Bar\r\n\r\n"),
  };

  // Lastly, the server responds with the actual content.
  MockRead data_reads[] = {
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
}

TEST_F(HttpNetworkTransactionTest, BuildRequest_ExtraHeadersStripped) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.extra_headers.SetHeader("referer", "www.foo.com");
  request.extra_headers.SetHeader("hEllo", "Kitty");
  request.extra_headers.SetHeader("FoO", "bar");

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockWrite data_writes[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "hEllo: Kitty\r\n"
              "FoO: bar\r\n\r\n"),
  };

  // Lastly, the server responds with the actual content.
  MockRead data_reads[] = {
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
}

TEST_F(HttpNetworkTransactionTest, SOCKS4_HTTP_GET) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  SessionDependencies session_deps(
      ProxyService::CreateFixed("socks4://myproxy:1080"));

  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  char write_buffer[] = { 0x04, 0x01, 0x00, 0x50, 127, 0, 0, 1, 0 };
  char read_buffer[] = { 0x00, 0x5A, 0x00, 0x00, 0, 0, 0, 0 };

  MockWrite data_writes[] = {
    MockWrite(true, write_buffer, arraysize(write_buffer)),
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n")
  };

  MockRead data_reads[] = {
    MockRead(true, read_buffer, arraysize(read_buffer)),
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n\r\n"),
    MockRead("Payload"),
    MockRead(false, OK)
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);

  std::string response_text;
  rv = ReadTransaction(trans.get(), &response_text);
  EXPECT_EQ(OK, rv);
  EXPECT_EQ("Payload", response_text);
}

TEST_F(HttpNetworkTransactionTest, SOCKS4_SSL_GET) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  SessionDependencies session_deps(
      ProxyService::CreateFixed("socks4://myproxy:1080"));

  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  unsigned char write_buffer[] = { 0x04, 0x01, 0x01, 0xBB, 127, 0, 0, 1, 0 };
  unsigned char read_buffer[] = { 0x00, 0x5A, 0x00, 0x00, 0, 0, 0, 0 };

  MockWrite data_writes[] = {
    MockWrite(true, reinterpret_cast<char*>(write_buffer),
              arraysize(write_buffer)),
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n")
  };

  MockRead data_reads[] = {
    MockWrite(true, reinterpret_cast<char*>(read_buffer),
              arraysize(read_buffer)),
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n\r\n"),
    MockRead("Payload"),
    MockRead(false, OK)
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  SSLSocketDataProvider ssl(true, OK);
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);

  std::string response_text;
  rv = ReadTransaction(trans.get(), &response_text);
  EXPECT_EQ(OK, rv);
  EXPECT_EQ("Payload", response_text);
}

TEST_F(HttpNetworkTransactionTest, SOCKS5_HTTP_GET) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  SessionDependencies session_deps(
      ProxyService::CreateFixed("socks5://myproxy:1080"));

  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  const char kSOCKS5GreetRequest[] = { 0x05, 0x01, 0x00 };
  const char kSOCKS5GreetResponse[] = { 0x05, 0x00 };
  const char kSOCKS5OkRequest[] = {
    0x05,  // Version
    0x01,  // Command (CONNECT)
    0x00,  // Reserved.
    0x03,  // Address type (DOMAINNAME).
    0x0E,  // Length of domain (14)
    // Domain string:
    'w', 'w', 'w', '.', 'g', 'o', 'o', 'g', 'l', 'e', '.', 'c', 'o', 'm',
    0x00, 0x50,  // 16-bit port (80)
  };
  const char kSOCKS5OkResponse[] =
      { 0x05, 0x00, 0x00, 0x01, 127, 0, 0, 1, 0x00, 0x50 };

  MockWrite data_writes[] = {
    MockWrite(true, kSOCKS5GreetRequest, arraysize(kSOCKS5GreetRequest)),
    MockWrite(true, kSOCKS5OkRequest, arraysize(kSOCKS5OkRequest)),
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n")
  };

  MockRead data_reads[] = {
    MockWrite(true, kSOCKS5GreetResponse, arraysize(kSOCKS5GreetResponse)),
    MockWrite(true, kSOCKS5OkResponse, arraysize(kSOCKS5OkResponse)),
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n\r\n"),
    MockRead("Payload"),
    MockRead(false, OK)
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);

  std::string response_text;
  rv = ReadTransaction(trans.get(), &response_text);
  EXPECT_EQ(OK, rv);
  EXPECT_EQ("Payload", response_text);
}

TEST_F(HttpNetworkTransactionTest, SOCKS5_SSL_GET) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  SessionDependencies session_deps(
      ProxyService::CreateFixed("socks5://myproxy:1080"));

  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  const char kSOCKS5GreetRequest[] = { 0x05, 0x01, 0x00 };
  const char kSOCKS5GreetResponse[] = { 0x05, 0x00 };
  const unsigned char kSOCKS5OkRequest[] = {
    0x05,  // Version
    0x01,  // Command (CONNECT)
    0x00,  // Reserved.
    0x03,  // Address type (DOMAINNAME).
    0x0E,  // Length of domain (14)
    // Domain string:
    'w', 'w', 'w', '.', 'g', 'o', 'o', 'g', 'l', 'e', '.', 'c', 'o', 'm',
    0x01, 0xBB,  // 16-bit port (443)
  };

  const char kSOCKS5OkResponse[] =
      { 0x05, 0x00, 0x00, 0x01, 0, 0, 0, 0, 0x00, 0x00 };

  MockWrite data_writes[] = {
    MockWrite(true, kSOCKS5GreetRequest, arraysize(kSOCKS5GreetRequest)),
    MockWrite(true, reinterpret_cast<const char*>(kSOCKS5OkRequest),
              arraysize(kSOCKS5OkRequest)),
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n")
  };

  MockRead data_reads[] = {
    MockWrite(true, kSOCKS5GreetResponse, arraysize(kSOCKS5GreetResponse)),
    MockWrite(true, kSOCKS5OkResponse, arraysize(kSOCKS5OkResponse)),
    MockRead("HTTP/1.0 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n\r\n"),
    MockRead("Payload"),
    MockRead(false, OK)
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  SSLSocketDataProvider ssl(true, OK);
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);

  std::string response_text;
  rv = ReadTransaction(trans.get(), &response_text);
  EXPECT_EQ(OK, rv);
  EXPECT_EQ("Payload", response_text);
}

// Tests that for connection endpoints the group names are correctly set.

struct GroupNameTest {
  std::string proxy_server;
  std::string url;
  std::string expected_group_name;
  bool ssl;
};

scoped_refptr<HttpNetworkSession> SetupSessionForGroupNameTests(
    SessionDependencies* session_deps) {
  scoped_refptr<HttpNetworkSession> session(CreateSession(session_deps));

  HttpAlternateProtocols* alternate_protocols =
      session->mutable_alternate_protocols();
  alternate_protocols->SetAlternateProtocolFor(
      HostPortPair("host.with.alternate", 80), 443,
      HttpAlternateProtocols::NPN_SPDY_2);

  return session;
}

int GroupNameTransactionHelper(
    const std::string& url,
    const scoped_refptr<HttpNetworkSession>& session) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL(url);
  request.load_flags = 0;

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  TestCompletionCallback callback;

  // We do not complete this request, the dtor will clean the transaction up.
  return trans->Start(&request, &callback, BoundNetLog());
}

TEST_F(HttpNetworkTransactionTest, GroupNameForDirectConnections) {
  const GroupNameTest tests[] = {
    {
      "",  // unused
      "http://www.google.com/direct",
      "www.google.com:80",
      false,
    },
    {
      "",  // unused
      "http://[2001:1418:13:1::25]/direct",
      "[2001:1418:13:1::25]:80",
      false,
    },

    // SSL Tests
    {
      "",  // unused
      "https://www.google.com/direct_ssl",
      "ssl/www.google.com:443",
      true,
    },
    {
      "",  // unused
      "https://[2001:1418:13:1::25]/direct",
      "ssl/[2001:1418:13:1::25]:443",
      true,
    },
    {
      "",  // unused
      "http://host.with.alternate/direct",
      "ssl/host.with.alternate:443",
      true,
    },
  };

  HttpStreamFactory::set_use_alternate_protocols(true);

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) {
    SessionDependencies session_deps(
        ProxyService::CreateFixed(tests[i].proxy_server));
    scoped_refptr<HttpNetworkSession> session(
        SetupSessionForGroupNameTests(&session_deps));

    HttpNetworkSessionPeer peer(session);
    CaptureGroupNameTransportSocketPool* transport_conn_pool =
        new CaptureGroupNameTransportSocketPool(NULL, NULL);
    peer.SetTransportSocketPool(transport_conn_pool);
    CaptureGroupNameSSLSocketPool* ssl_conn_pool =
        new CaptureGroupNameSSLSocketPool(NULL, NULL);
    peer.SetSSLSocketPool(ssl_conn_pool);

    EXPECT_EQ(ERR_IO_PENDING,
              GroupNameTransactionHelper(tests[i].url, session));
    if (tests[i].ssl)
      EXPECT_EQ(tests[i].expected_group_name,
                ssl_conn_pool->last_group_name_received());
    else
      EXPECT_EQ(tests[i].expected_group_name,
                transport_conn_pool->last_group_name_received());
  }

  HttpStreamFactory::set_use_alternate_protocols(false);
}

TEST_F(HttpNetworkTransactionTest, GroupNameForHTTPProxyConnections) {
  const GroupNameTest tests[] = {
    {
      "http_proxy",
      "http://www.google.com/http_proxy_normal",
      "www.google.com:80",
      false,
    },

    // SSL Tests
    {
      "http_proxy",
      "https://www.google.com/http_connect_ssl",
      "ssl/www.google.com:443",
      true,
    },

    {
      "http_proxy",
      "http://host.with.alternate/direct",
      "ssl/host.with.alternate:443",
      true,
    },
  };

  HttpStreamFactory::set_use_alternate_protocols(true);

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) {
    SessionDependencies session_deps(
        ProxyService::CreateFixed(tests[i].proxy_server));
    scoped_refptr<HttpNetworkSession> session(
        SetupSessionForGroupNameTests(&session_deps));

    HttpNetworkSessionPeer peer(session);

    HostPortPair proxy_host("http_proxy", 80);
    CaptureGroupNameHttpProxySocketPool* http_proxy_pool =
        new CaptureGroupNameHttpProxySocketPool(NULL, NULL);
    peer.SetSocketPoolForHTTPProxy(proxy_host, http_proxy_pool);
    CaptureGroupNameSSLSocketPool* ssl_conn_pool =
        new CaptureGroupNameSSLSocketPool(NULL, NULL);
    peer.SetSocketPoolForSSLWithProxy(proxy_host, ssl_conn_pool);

    EXPECT_EQ(ERR_IO_PENDING,
              GroupNameTransactionHelper(tests[i].url, session));
    if (tests[i].ssl)
      EXPECT_EQ(tests[i].expected_group_name,
                ssl_conn_pool->last_group_name_received());
    else
      EXPECT_EQ(tests[i].expected_group_name,
                http_proxy_pool->last_group_name_received());
  }

  HttpStreamFactory::set_use_alternate_protocols(false);
}

TEST_F(HttpNetworkTransactionTest, GroupNameForSOCKSConnections) {
  const GroupNameTest tests[] = {
    {
      "socks4://socks_proxy:1080",
      "http://www.google.com/socks4_direct",
      "socks4/www.google.com:80",
      false,
    },
    {
      "socks5://socks_proxy:1080",
      "http://www.google.com/socks5_direct",
      "socks5/www.google.com:80",
      false,
    },

    // SSL Tests
    {
      "socks4://socks_proxy:1080",
      "https://www.google.com/socks4_ssl",
      "socks4/ssl/www.google.com:443",
      true,
    },
    {
      "socks5://socks_proxy:1080",
      "https://www.google.com/socks5_ssl",
      "socks5/ssl/www.google.com:443",
      true,
    },

    {
      "socks4://socks_proxy:1080",
      "http://host.with.alternate/direct",
      "socks4/ssl/host.with.alternate:443",
      true,
    },
  };

  HttpStreamFactory::set_use_alternate_protocols(true);

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(tests); ++i) {
    SessionDependencies session_deps(
        ProxyService::CreateFixed(tests[i].proxy_server));
    scoped_refptr<HttpNetworkSession> session(
        SetupSessionForGroupNameTests(&session_deps));

    HttpNetworkSessionPeer peer(session);

    HostPortPair proxy_host("socks_proxy", 1080);
    CaptureGroupNameSOCKSSocketPool* socks_conn_pool =
        new CaptureGroupNameSOCKSSocketPool(NULL, NULL);
    peer.SetSocketPoolForSOCKSProxy(proxy_host, socks_conn_pool);
    CaptureGroupNameSSLSocketPool* ssl_conn_pool =
        new CaptureGroupNameSSLSocketPool(NULL, NULL);
    peer.SetSocketPoolForSSLWithProxy(proxy_host, ssl_conn_pool);

    scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

    EXPECT_EQ(ERR_IO_PENDING,
              GroupNameTransactionHelper(tests[i].url, session));
    if (tests[i].ssl)
      EXPECT_EQ(tests[i].expected_group_name,
                ssl_conn_pool->last_group_name_received());
    else
      EXPECT_EQ(tests[i].expected_group_name,
                socks_conn_pool->last_group_name_received());
  }

  HttpStreamFactory::set_use_alternate_protocols(false);
}

TEST_F(HttpNetworkTransactionTest, ReconsiderProxyAfterFailedConnection) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");

  SessionDependencies session_deps(
      ProxyService::CreateFixed("myproxy:70;foobar:80"));

  // This simulates failure resolving all hostnames; that means we will fail
  // connecting to both proxies (myproxy:70 and foobar:80).
  session_deps.host_resolver->rules()->AddSimulatedFailure("*");

  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(ERR_PROXY_CONNECTION_FAILED, rv);
}

// Host resolution observer used by
// HttpNetworkTransactionTest.ResolveMadeWithReferrer to check that host
// resovle requests are issued with a referrer of |expected_referrer|.
class ResolutionReferrerObserver : public HostResolver::Observer {
 public:
  explicit ResolutionReferrerObserver(const GURL& expected_referrer)
      : expected_referrer_(expected_referrer),
        called_start_with_referrer_(false),
        called_finish_with_referrer_(false) {
  }

  virtual void OnStartResolution(int id,
                                 const HostResolver::RequestInfo& info) {
    if (info.referrer() == expected_referrer_)
      called_start_with_referrer_ = true;
  }

  virtual void OnFinishResolutionWithStatus(
      int id, bool was_resolved, const HostResolver::RequestInfo& info ) {
    if (info.referrer() == expected_referrer_)
      called_finish_with_referrer_ = true;
  }

  virtual void OnCancelResolution(int id,
                                  const HostResolver::RequestInfo& info ) {
    FAIL() << "Should not be cancelling any requests!";
  }

  bool did_complete_with_expected_referrer() const {
    return called_start_with_referrer_ && called_finish_with_referrer_;
  }

 private:
  GURL expected_referrer_;
  bool called_start_with_referrer_;
  bool called_finish_with_referrer_;

  DISALLOW_COPY_AND_ASSIGN(ResolutionReferrerObserver);
};

// Make sure that when HostResolver::Resolve() is invoked, it passes through
// the "referrer". This is depended on by the DNS prefetch observer.
TEST_F(HttpNetworkTransactionTest, ResolveMadeWithReferrer) {
  GURL referrer = GURL("http://expected-referrer/");
  EXPECT_TRUE(referrer.is_valid());
  ResolutionReferrerObserver resolution_observer(referrer);

  // Issue a request, containing an HTTP referrer.
  HttpRequestInfo request;
  request.method = "GET";
  request.referrer = referrer;
  request.url = GURL("http://www.google.com/");

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(
      CreateSession(&session_deps)));

  // Attach an observer to watch the host resolutions being made.
  session_deps.host_resolver->AddObserver(&resolution_observer);

  // Connect up a mock socket which will fail when reading.
  MockRead data_reads[] = {
    MockRead(false, ERR_FAILED),
  };
  StaticSocketDataProvider data(data_reads, arraysize(data_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data);

  // Run the request until it fails reading from the socket.
  TestCompletionCallback callback;
  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  rv = callback.WaitForResult();
  EXPECT_EQ(ERR_FAILED, rv);

  // Check that the host resolution observer saw |referrer|.
  EXPECT_TRUE(resolution_observer.did_complete_with_expected_referrer());
}

// Base test to make sure that when the load flags for a request specify to
// bypass the cache, the DNS cache is not used.
void BypassHostCacheOnRefreshHelper(int load_flags) {
  // Issue a request, asking to bypass the cache(s).
  HttpRequestInfo request;
  request.method = "GET";
  request.load_flags = load_flags;
  request.url = GURL("http://www.google.com/");

  SessionDependencies session_deps;

  // Select a host resolver that does caching.
  session_deps.host_resolver.reset(new MockCachingHostResolver);

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(
      CreateSession(&session_deps)));

  // Warm up the host cache so it has an entry for "www.google.com" (by doing
  // a synchronous lookup.)
  AddressList addrlist;
  int rv = session_deps.host_resolver->Resolve(
      HostResolver::RequestInfo(HostPortPair("www.google.com", 80)), &addrlist,
      NULL, NULL, BoundNetLog());
  EXPECT_EQ(OK, rv);

  // Verify that it was added to host cache, by doing a subsequent async lookup
  // and confirming it completes synchronously.
  TestCompletionCallback resolve_callback;
  rv = session_deps.host_resolver->Resolve(
      HostResolver::RequestInfo(HostPortPair("www.google.com", 80)), &addrlist,
      &resolve_callback, NULL, BoundNetLog());
  ASSERT_EQ(OK, rv);

  // Inject a failure the next time that "www.google.com" is resolved. This way
  // we can tell if the next lookup hit the cache, or the "network".
  // (cache --> success, "network" --> failure).
  session_deps.host_resolver->rules()->AddSimulatedFailure("www.google.com");

  // Connect up a mock socket which will fail with ERR_UNEXPECTED during the
  // first read -- this won't be reached as the host resolution will fail first.
  MockRead data_reads[] = { MockRead(false, ERR_UNEXPECTED) };
  StaticSocketDataProvider data(data_reads, arraysize(data_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data);

  // Run the request.
  TestCompletionCallback callback;
  rv = trans->Start(&request, &callback, BoundNetLog());
  ASSERT_EQ(ERR_IO_PENDING, rv);
  rv = callback.WaitForResult();

  // If we bypassed the cache, we would have gotten a failure while resolving
  // "www.google.com".
  EXPECT_EQ(ERR_NAME_NOT_RESOLVED, rv);
}

// There are multiple load flags that should trigger the host cache bypass.
// Test each in isolation:
TEST_F(HttpNetworkTransactionTest, BypassHostCacheOnRefresh1) {
  BypassHostCacheOnRefreshHelper(LOAD_BYPASS_CACHE);
}

TEST_F(HttpNetworkTransactionTest, BypassHostCacheOnRefresh2) {
  BypassHostCacheOnRefreshHelper(LOAD_VALIDATE_CACHE);
}

TEST_F(HttpNetworkTransactionTest, BypassHostCacheOnRefresh3) {
  BypassHostCacheOnRefreshHelper(LOAD_DISABLE_CACHE);
}

// Make sure we can handle an error when writing the request.
TEST_F(HttpNetworkTransactionTest, RequestWriteError) {
  SessionDependencies session_deps;
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.foo.com/");
  request.load_flags = 0;

  MockWrite write_failure[] = {
    MockWrite(true, ERR_CONNECTION_RESET),
  };
  StaticSocketDataProvider data(NULL, 0,
                                write_failure, arraysize(write_failure));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(ERR_CONNECTION_RESET, rv);
}

// Check that a connection closed after the start of the headers finishes ok.
TEST_F(HttpNetworkTransactionTest, ConnectionClosedAfterStartOfHeaders) {
  SessionDependencies session_deps;
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.foo.com/");
  request.load_flags = 0;

  MockRead data_reads[] = {
    MockRead("HTTP/1."),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_TRUE(response != NULL);

  EXPECT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.0 200 OK", response->headers->GetStatusLine());

  std::string response_data;
  rv = ReadTransaction(trans.get(), &response_data);
  EXPECT_EQ(OK, rv);
  EXPECT_EQ("", response_data);
}

// Make sure that a dropped connection while draining the body for auth
// restart does the right thing.
TEST_F(HttpNetworkTransactionTest, DrainResetOK) {
  SessionDependencies session_deps;
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  MockWrite data_writes1[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads1[] = {
    MockRead("HTTP/1.1 401 Unauthorized\r\n"),
    MockRead("WWW-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 14\r\n\r\n"),
    MockRead("Unauth"),
    MockRead(true, ERR_CONNECTION_RESET),
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  session_deps.socket_factory.AddSocketDataProvider(&data1);

  // After calling trans->RestartWithAuth(), this is the request we should
  // be issuing -- the final header line contains the credentials.
  MockWrite data_writes2[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Authorization: Basic Zm9vOmJhcg==\r\n\r\n"),
  };

  // Lastly, the server responds with the actual content.
  MockRead data_reads2[] = {
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data2(data_reads2, arraysize(data_reads2),
                                 data_writes2, arraysize(data_writes2));
  session_deps.socket_factory.AddSocketDataProvider(&data2);

  TestCompletionCallback callback1;

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback1, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);

  // The password prompt info should have been set in response->auth_challenge.
  EXPECT_FALSE(response->auth_challenge.get() == NULL);

  EXPECT_EQ(L"www.google.com:80", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"MyRealm1", response->auth_challenge->realm);
  EXPECT_EQ(L"basic", response->auth_challenge->scheme);

  TestCompletionCallback callback2;

  rv = trans->RestartWithAuth(kFoo, kBar, &callback2);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback2.WaitForResult();
  EXPECT_EQ(OK, rv);

  response = trans->GetResponseInfo();
  EXPECT_FALSE(response == NULL);
  EXPECT_TRUE(response->auth_challenge.get() == NULL);
  EXPECT_EQ(100, response->headers->GetContentLength());
}

// Test HTTPS connections going through a proxy that sends extra data.
TEST_F(HttpNetworkTransactionTest, HTTPSViaProxyWithExtraData) {
  SessionDependencies session_deps(ProxyService::CreateFixed("myproxy:70"));

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  MockRead proxy_reads[] = {
    MockRead("HTTP/1.0 200 Connected\r\n\r\nExtra data"),
    MockRead(false, OK)
  };

  StaticSocketDataProvider data(proxy_reads, arraysize(proxy_reads), NULL, 0);
  SSLSocketDataProvider ssl(true, OK);

  session_deps.socket_factory.AddSocketDataProvider(&data);
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  TestCompletionCallback callback;

  session_deps.socket_factory.ResetNextMockIndexes();

  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(ERR_TUNNEL_CONNECTION_FAILED, rv);
}

TEST_F(HttpNetworkTransactionTest, LargeContentLengthThenClose) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  MockRead data_reads[] = {
    MockRead("HTTP/1.0 200 OK\r\nContent-Length:6719476739\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data(data_reads, arraysize(data_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  EXPECT_EQ(OK, callback.WaitForResult());

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_TRUE(response != NULL);

  EXPECT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.0 200 OK", response->headers->GetStatusLine());

  std::string response_data;
  rv = ReadTransaction(trans.get(), &response_data);
  EXPECT_EQ(ERR_CONNECTION_CLOSED, rv);
}

TEST_F(HttpNetworkTransactionTest, UploadFileSmallerThanLength) {
  HttpRequestInfo request;
  request.method = "POST";
  request.url = GURL("http://www.google.com/upload");
  request.upload_data = new UploadData;
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  FilePath temp_file_path;
  ASSERT_TRUE(file_util::CreateTemporaryFile(&temp_file_path));
  const uint64 kFakeSize = 100000;  // file is actually blank

  std::vector<UploadData::Element> elements;
  UploadData::Element element;
  element.SetToFilePath(temp_file_path);
  element.SetContentLength(kFakeSize);
  elements.push_back(element);
  request.upload_data->SetElements(elements);
  EXPECT_EQ(kFakeSize, request.upload_data->GetContentLength());

  MockRead data_reads[] = {
    MockRead("HTTP/1.0 200 OK\r\n\r\n"),
    MockRead("hello world"),
    MockRead(false, OK),
  };
  StaticSocketDataProvider data(data_reads, arraysize(data_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_TRUE(response != NULL);

  EXPECT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.0 200 OK", response->headers->GetStatusLine());

  std::string response_data;
  rv = ReadTransaction(trans.get(), &response_data);
  EXPECT_EQ(OK, rv);
  EXPECT_EQ("hello world", response_data);

  file_util::Delete(temp_file_path, false);
}

TEST_F(HttpNetworkTransactionTest, UploadUnreadableFile) {
  HttpRequestInfo request;
  request.method = "POST";
  request.url = GURL("http://www.google.com/upload");
  request.upload_data = new UploadData;
  request.load_flags = 0;

  // If we try to upload an unreadable file, the network stack should report
  // the file size as zero and upload zero bytes for that file.
  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  FilePath temp_file;
  ASSERT_TRUE(file_util::CreateTemporaryFile(&temp_file));
  std::string temp_file_content("Unreadable file.");
  ASSERT_TRUE(file_util::WriteFile(temp_file, temp_file_content.c_str(),
                                   temp_file_content.length()));
  ASSERT_TRUE(file_util::MakeFileUnreadable(temp_file));

  std::vector<UploadData::Element> elements;
  UploadData::Element element;
  element.SetToFilePath(temp_file);
  elements.push_back(element);
  request.upload_data->SetElements(elements);

  MockRead data_reads[] = {
    MockRead("HTTP/1.0 200 OK\r\n\r\n"),
    MockRead(false, OK),
  };
  MockWrite data_writes[] = {
    MockWrite("POST /upload HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Content-Length: 0\r\n\r\n"),
    MockWrite(false, OK),
  };
  StaticSocketDataProvider data(data_reads, arraysize(data_reads), data_writes,
                                arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_TRUE(response != NULL);
  EXPECT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.0 200 OK", response->headers->GetStatusLine());

  file_util::Delete(temp_file, false);
}

TEST_F(HttpNetworkTransactionTest, UnreadableUploadFileAfterAuthRestart) {
  HttpRequestInfo request;
  request.method = "POST";
  request.url = GURL("http://www.google.com/upload");
  request.upload_data = new UploadData;
  request.load_flags = 0;

  SessionDependencies session_deps;
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  FilePath temp_file;
  ASSERT_TRUE(file_util::CreateTemporaryFile(&temp_file));
  std::string temp_file_contents("Unreadable file.");
  std::string unreadable_contents(temp_file_contents.length(), '\0');
  ASSERT_TRUE(file_util::WriteFile(temp_file, temp_file_contents.c_str(),
                                   temp_file_contents.length()));

  std::vector<UploadData::Element> elements;
  UploadData::Element element;
  element.SetToFilePath(temp_file);
  elements.push_back(element);
  request.upload_data->SetElements(elements);

  MockRead data_reads[] = {
    MockRead("HTTP/1.1 401 Unauthorized\r\n"),
    MockRead("WWW-Authenticate: Basic realm=\"MyRealm1\"\r\n"),
    MockRead("Content-Length: 0\r\n\r\n"),  // No response body.

    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead("Content-Length: 0\r\n\r\n"),
    MockRead(false, OK),
  };
  MockWrite data_writes[] = {
    MockWrite("POST /upload HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Content-Length: 16\r\n\r\n"),
    MockWrite(false, temp_file_contents.c_str()),

    MockWrite("POST /upload HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Content-Length: 16\r\n"
              "Authorization: Basic Zm9vOmJhcg==\r\n\r\n"),
    MockWrite(false, unreadable_contents.c_str(), temp_file_contents.length()),
    MockWrite(false, OK),
  };
  StaticSocketDataProvider data(data_reads, arraysize(data_reads), data_writes,
                                arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback1;

  int rv = trans->Start(&request, &callback1, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  EXPECT_TRUE(response != NULL);
  EXPECT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 401 Unauthorized", response->headers->GetStatusLine());

  // The password prompt info should have been set in response->auth_challenge.
  EXPECT_TRUE(response->auth_challenge.get() != NULL);
  EXPECT_EQ(L"www.google.com:80", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"MyRealm1", response->auth_challenge->realm);
  EXPECT_EQ(L"basic", response->auth_challenge->scheme);

  // Now make the file unreadable and try again.
  ASSERT_TRUE(file_util::MakeFileUnreadable(temp_file));

  TestCompletionCallback callback2;

  rv = trans->RestartWithAuth(kFoo, kBar, &callback2);
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback2.WaitForResult();
  EXPECT_EQ(OK, rv);

  response = trans->GetResponseInfo();
  EXPECT_TRUE(response != NULL);
  EXPECT_TRUE(response->headers != NULL);
  EXPECT_TRUE(response->auth_challenge.get() == NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());

  file_util::Delete(temp_file, false);
}

// Tests that changes to Auth realms are treated like auth rejections.
TEST_F(HttpNetworkTransactionTest, ChangeAuthRealms) {
  SessionDependencies session_deps;

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  // First transaction will request a resource and receive a Basic challenge
  // with realm="first_realm".
  MockWrite data_writes1[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "\r\n"),
  };
  MockRead data_reads1[] = {
    MockRead("HTTP/1.1 401 Unauthorized\r\n"
             "WWW-Authenticate: Basic realm=\"first_realm\"\r\n"
             "\r\n"),
  };

  // After calling trans->RestartWithAuth(), provide an Authentication header
  // for first_realm. The server will reject and provide a challenge with
  // second_realm.
  MockWrite data_writes2[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Authorization: Basic Zmlyc3Q6YmF6\r\n"
              "\r\n"),
  };
  MockRead data_reads2[] = {
    MockRead("HTTP/1.1 401 Unauthorized\r\n"
             "WWW-Authenticate: Basic realm=\"second_realm\"\r\n"
             "\r\n"),
  };

  // This again fails, and goes back to first_realm. Make sure that the
  // entry is removed from cache.
  MockWrite data_writes3[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Authorization: Basic c2Vjb25kOmZvdQ==\r\n"
              "\r\n"),
  };
  MockRead data_reads3[] = {
    MockRead("HTTP/1.1 401 Unauthorized\r\n"
             "WWW-Authenticate: Basic realm=\"first_realm\"\r\n"
             "\r\n"),
  };

  // Try one last time (with the correct password) and get the resource.
  MockWrite data_writes4[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n"
              "Authorization: Basic Zmlyc3Q6YmFy\r\n"
              "\r\n"),
  };
  MockRead data_reads4[] = {
    MockRead("HTTP/1.1 200 OK\r\n"
             "Content-Type: text/html; charset=iso-8859-1\r\n"
             "Content-Length: 5\r\n"
             "\r\n"
             "hello"),
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  StaticSocketDataProvider data2(data_reads2, arraysize(data_reads2),
                                 data_writes2, arraysize(data_writes2));
  StaticSocketDataProvider data3(data_reads3, arraysize(data_reads3),
                                 data_writes3, arraysize(data_writes3));
  StaticSocketDataProvider data4(data_reads4, arraysize(data_reads4),
                                 data_writes4, arraysize(data_writes4));
  session_deps.socket_factory.AddSocketDataProvider(&data1);
  session_deps.socket_factory.AddSocketDataProvider(&data2);
  session_deps.socket_factory.AddSocketDataProvider(&data3);
  session_deps.socket_factory.AddSocketDataProvider(&data4);

  TestCompletionCallback callback1;

  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  // Issue the first request with Authorize headers. There should be a
  // password prompt for first_realm waiting to be filled in after the
  // transaction completes.
  int rv = trans->Start(&request, &callback1, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);
  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);
  ASSERT_FALSE(response->auth_challenge.get() == NULL);
  EXPECT_EQ(L"www.google.com:80", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"first_realm", response->auth_challenge->realm);
  EXPECT_EQ(L"basic", response->auth_challenge->scheme);

  // Issue the second request with an incorrect password. There should be a
  // password prompt for second_realm waiting to be filled in after the
  // transaction completes.
  TestCompletionCallback callback2;
  rv = trans->RestartWithAuth(kFirst, kBaz, &callback2);
  EXPECT_EQ(ERR_IO_PENDING, rv);
  rv = callback2.WaitForResult();
  EXPECT_EQ(OK, rv);
  response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);
  ASSERT_FALSE(response->auth_challenge.get() == NULL);
  EXPECT_EQ(L"www.google.com:80", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"second_realm", response->auth_challenge->realm);
  EXPECT_EQ(L"basic", response->auth_challenge->scheme);

  // Issue the third request with another incorrect password. There should be
  // a password prompt for first_realm waiting to be filled in. If the password
  // prompt is not present, it indicates that the HttpAuthCacheEntry for
  // first_realm was not correctly removed.
  TestCompletionCallback callback3;
  rv = trans->RestartWithAuth(kSecond, kFou, &callback3);
  EXPECT_EQ(ERR_IO_PENDING, rv);
  rv = callback3.WaitForResult();
  EXPECT_EQ(OK, rv);
  response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);
  ASSERT_FALSE(response->auth_challenge.get() == NULL);
  EXPECT_EQ(L"www.google.com:80", response->auth_challenge->host_and_port);
  EXPECT_EQ(L"first_realm", response->auth_challenge->realm);
  EXPECT_EQ(L"basic", response->auth_challenge->scheme);

  // Issue the fourth request with the correct password and username.
  TestCompletionCallback callback4;
  rv = trans->RestartWithAuth(kFirst, kBar, &callback4);
  EXPECT_EQ(ERR_IO_PENDING, rv);
  rv = callback4.WaitForResult();
  EXPECT_EQ(OK, rv);
  response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);
  EXPECT_TRUE(response->auth_challenge.get() == NULL);
}

TEST_F(HttpNetworkTransactionTest, HonorAlternateProtocolHeader) {
  HttpStreamFactory::set_next_protos("needs_to_be_set_for_this_test");
  HttpStreamFactory::set_use_alternate_protocols(true);

  SessionDependencies session_deps;

  MockRead data_reads[] = {
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead(kAlternateProtocolHttpHeader),
    MockRead("hello world"),
    MockRead(false, OK),
  };

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  StaticSocketDataProvider data(data_reads, arraysize(data_reads), NULL, 0);

  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));
  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  HostPortPair http_host_port_pair("www.google.com", 80);
  const HttpAlternateProtocols& alternate_protocols =
      session->alternate_protocols();
  EXPECT_FALSE(
      alternate_protocols.HasAlternateProtocolFor(http_host_port_pair));

  EXPECT_EQ(OK, callback.WaitForResult());

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());
  EXPECT_FALSE(response->was_fetched_via_spdy);
  EXPECT_FALSE(response->was_npn_negotiated);

  std::string response_data;
  ASSERT_EQ(OK, ReadTransaction(trans.get(), &response_data));
  EXPECT_EQ("hello world", response_data);

  ASSERT_TRUE(alternate_protocols.HasAlternateProtocolFor(http_host_port_pair));
  const HttpAlternateProtocols::PortProtocolPair alternate =
      alternate_protocols.GetAlternateProtocolFor(http_host_port_pair);
  HttpAlternateProtocols::PortProtocolPair expected_alternate;
  expected_alternate.port = 443;
  expected_alternate.protocol = HttpAlternateProtocols::NPN_SPDY_2;
  EXPECT_TRUE(expected_alternate.Equals(alternate));

  HttpStreamFactory::set_use_alternate_protocols(false);
  HttpStreamFactory::set_next_protos("");
}

TEST_F(HttpNetworkTransactionTest, MarkBrokenAlternateProtocolAndFallback) {
  HttpStreamFactory::set_use_alternate_protocols(true);
  SessionDependencies session_deps;

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  MockConnect mock_connect(true, ERR_CONNECTION_REFUSED);
  StaticSocketDataProvider first_data;
  first_data.set_connect_data(mock_connect);
  session_deps.socket_factory.AddSocketDataProvider(&first_data);

  MockRead data_reads[] = {
    MockRead("HTTP/1.1 200 OK\r\n\r\n"),
    MockRead("hello world"),
    MockRead(true, OK),
  };
  StaticSocketDataProvider second_data(
      data_reads, arraysize(data_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&second_data);

  TestCompletionCallback callback;

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  HostPortPair http_host_port_pair("www.google.com", 80);
  HttpAlternateProtocols* alternate_protocols =
      session->mutable_alternate_protocols();
  alternate_protocols->SetAlternateProtocolFor(
      http_host_port_pair, 1234 /* port is ignored by MockConnect anyway */,
      HttpAlternateProtocols::NPN_SPDY_2);

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback.WaitForResult());

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());

  std::string response_data;
  ASSERT_EQ(OK, ReadTransaction(trans.get(), &response_data));
  EXPECT_EQ("hello world", response_data);

  ASSERT_TRUE(
      alternate_protocols->HasAlternateProtocolFor(http_host_port_pair));
  const HttpAlternateProtocols::PortProtocolPair alternate =
      alternate_protocols->GetAlternateProtocolFor(http_host_port_pair);
  EXPECT_EQ(HttpAlternateProtocols::BROKEN, alternate.protocol);
  HttpStreamFactory::set_use_alternate_protocols(false);
}

TEST_F(HttpNetworkTransactionTest, UseAlternateProtocolForNpnSpdy) {
  HttpStreamFactory::set_use_alternate_protocols(true);
  HttpStreamFactory::set_next_protos(kExpectedNPNString);
  SessionDependencies session_deps;

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  MockRead data_reads[] = {
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead(kAlternateProtocolHttpHeader),
    MockRead("hello world"),
    MockRead(true, OK),
  };

  StaticSocketDataProvider first_transaction(
      data_reads, arraysize(data_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&first_transaction);

  SSLSocketDataProvider ssl(true, OK);
  ssl.next_proto_status = SSLClientSocket::kNextProtoNegotiated;
  ssl.next_proto = "spdy/2";
  ssl.was_npn_negotiated = true;
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  scoped_ptr<spdy::SpdyFrame> req(ConstructSpdyGet(NULL, 0, false, 1, LOWEST));
  MockWrite spdy_writes[] = { CreateMockWrite(*req) };

  scoped_ptr<spdy::SpdyFrame> resp(ConstructSpdyGetSynReply(NULL, 0, 1));
  scoped_ptr<spdy::SpdyFrame> data(ConstructSpdyBodyFrame(1, true));
  MockRead spdy_reads[] = {
    CreateMockRead(*resp),
    CreateMockRead(*data),
    MockRead(true, 0, 0),
  };

  scoped_refptr<DelayedSocketData> spdy_data(
      new DelayedSocketData(
          1,  // wait for one write to finish before reading.
          spdy_reads, arraysize(spdy_reads),
          spdy_writes, arraysize(spdy_writes)));
  session_deps.socket_factory.AddSocketDataProvider(spdy_data);

  MockConnect never_finishing_connect(false, ERR_IO_PENDING);
  StaticSocketDataProvider hanging_non_alternate_protocol_socket(
      NULL, 0, NULL, 0);
  hanging_non_alternate_protocol_socket.set_connect_data(
      never_finishing_connect);
  session_deps.socket_factory.AddSocketDataProvider(
      &hanging_non_alternate_protocol_socket);

  TestCompletionCallback callback;

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));
  scoped_ptr<HttpNetworkTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback.WaitForResult());

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());

  std::string response_data;
  ASSERT_EQ(OK, ReadTransaction(trans.get(), &response_data));
  EXPECT_EQ("hello world", response_data);

  trans.reset(new HttpNetworkTransaction(session));

  rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback.WaitForResult());

  response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());
  EXPECT_TRUE(response->was_fetched_via_spdy);
  EXPECT_TRUE(response->was_npn_negotiated);

  ASSERT_EQ(OK, ReadTransaction(trans.get(), &response_data));
  EXPECT_EQ("hello!", response_data);

  HttpStreamFactory::set_next_protos("");
  HttpStreamFactory::set_use_alternate_protocols(false);
}

TEST_F(HttpNetworkTransactionTest, AlternateProtocolWithSpdyLateBinding) {
  HttpStreamFactory::set_use_alternate_protocols(true);
  HttpStreamFactory::set_next_protos(kExpectedNPNString);
  SessionDependencies session_deps;

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  MockRead data_reads[] = {
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead(kAlternateProtocolHttpHeader),
    MockRead("hello world"),
    MockRead(true, OK),
  };

  StaticSocketDataProvider first_transaction(
      data_reads, arraysize(data_reads), NULL, 0);
  // Socket 1 is the HTTP transaction with the Alternate-Protocol header.
  session_deps.socket_factory.AddSocketDataProvider(&first_transaction);

  MockConnect never_finishing_connect(false, ERR_IO_PENDING);
  StaticSocketDataProvider hanging_socket(
      NULL, 0, NULL, 0);
  hanging_socket.set_connect_data(never_finishing_connect);
  // Socket 2 and 3 are the hanging Alternate-Protocol and
  // non-Alternate-Protocol jobs from the 2nd transaction.
  session_deps.socket_factory.AddSocketDataProvider(&hanging_socket);
  session_deps.socket_factory.AddSocketDataProvider(&hanging_socket);

  SSLSocketDataProvider ssl(true, OK);
  ssl.next_proto_status = SSLClientSocket::kNextProtoNegotiated;
  ssl.next_proto = "spdy/2";
  ssl.was_npn_negotiated = true;
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  scoped_ptr<spdy::SpdyFrame> req1(ConstructSpdyGet(NULL, 0, false, 1, LOWEST));
  scoped_ptr<spdy::SpdyFrame> req2(ConstructSpdyGet(NULL, 0, false, 3, LOWEST));
  MockWrite spdy_writes[] = {
    CreateMockWrite(*req1),
    CreateMockWrite(*req2),
  };
  scoped_ptr<spdy::SpdyFrame> resp1(ConstructSpdyGetSynReply(NULL, 0, 1));
  scoped_ptr<spdy::SpdyFrame> data1(ConstructSpdyBodyFrame(1, true));
  scoped_ptr<spdy::SpdyFrame> resp2(ConstructSpdyGetSynReply(NULL, 0, 3));
  scoped_ptr<spdy::SpdyFrame> data2(ConstructSpdyBodyFrame(3, true));
  MockRead spdy_reads[] = {
    CreateMockRead(*resp1),
    CreateMockRead(*data1),
    CreateMockRead(*resp2),
    CreateMockRead(*data2),
    MockRead(true, 0, 0),
  };

  scoped_refptr<DelayedSocketData> spdy_data(
      new DelayedSocketData(
          2,  // wait for writes to finish before reading.
          spdy_reads, arraysize(spdy_reads),
          spdy_writes, arraysize(spdy_writes)));
  // Socket 4 is the successful Alternate-Protocol for transaction 3.
  session_deps.socket_factory.AddSocketDataProvider(spdy_data);

  // Socket 5 is the unsuccessful non-Alternate-Protocol for transaction 3.
  session_deps.socket_factory.AddSocketDataProvider(&hanging_socket);

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));
  TestCompletionCallback callback1;
  HttpNetworkTransaction trans1(session);

  int rv = trans1.Start(&request, &callback1, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback1.WaitForResult());

  const HttpResponseInfo* response = trans1.GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());

  std::string response_data;
  ASSERT_EQ(OK, ReadTransaction(&trans1, &response_data));
  EXPECT_EQ("hello world", response_data);

  TestCompletionCallback callback2;
  HttpNetworkTransaction trans2(session);
  rv = trans2.Start(&request, &callback2, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  TestCompletionCallback callback3;
  HttpNetworkTransaction trans3(session);
  rv = trans3.Start(&request, &callback3, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  EXPECT_EQ(OK, callback2.WaitForResult());
  EXPECT_EQ(OK, callback3.WaitForResult());

  response = trans2.GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());
  EXPECT_TRUE(response->was_fetched_via_spdy);
  EXPECT_TRUE(response->was_npn_negotiated);
  ASSERT_EQ(OK, ReadTransaction(&trans2, &response_data));
  EXPECT_EQ("hello!", response_data);

  response = trans3.GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());
  EXPECT_TRUE(response->was_fetched_via_spdy);
  EXPECT_TRUE(response->was_npn_negotiated);
  ASSERT_EQ(OK, ReadTransaction(&trans3, &response_data));
  EXPECT_EQ("hello!", response_data);

  HttpStreamFactory::set_next_protos("");
  HttpStreamFactory::set_use_alternate_protocols(false);
}

TEST_F(HttpNetworkTransactionTest, StallAlternateProtocolForNpnSpdy) {
  HttpStreamFactory::set_use_alternate_protocols(true);
  HttpStreamFactory::set_next_protos(kExpectedNPNString);
  SessionDependencies session_deps;

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  MockRead data_reads[] = {
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead(kAlternateProtocolHttpHeader),
    MockRead("hello world"),
    MockRead(true, OK),
  };

  StaticSocketDataProvider first_transaction(
      data_reads, arraysize(data_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&first_transaction);

  SSLSocketDataProvider ssl(true, OK);
  ssl.next_proto_status = SSLClientSocket::kNextProtoNegotiated;
  ssl.next_proto = "spdy/2";
  ssl.was_npn_negotiated = true;
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  MockConnect never_finishing_connect(false, ERR_IO_PENDING);
  StaticSocketDataProvider hanging_alternate_protocol_socket(
      NULL, 0, NULL, 0);
  hanging_alternate_protocol_socket.set_connect_data(
      never_finishing_connect);
  session_deps.socket_factory.AddSocketDataProvider(
      &hanging_alternate_protocol_socket);

  // 2nd request is just a copy of the first one, over HTTP again.
  session_deps.socket_factory.AddSocketDataProvider(&first_transaction);

  TestCompletionCallback callback;

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));
  scoped_ptr<HttpNetworkTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback.WaitForResult());

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());

  std::string response_data;
  ASSERT_EQ(OK, ReadTransaction(trans.get(), &response_data));
  EXPECT_EQ("hello world", response_data);

  trans.reset(new HttpNetworkTransaction(session));

  rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback.WaitForResult());

  response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());
  EXPECT_FALSE(response->was_fetched_via_spdy);
  EXPECT_FALSE(response->was_npn_negotiated);

  ASSERT_EQ(OK, ReadTransaction(trans.get(), &response_data));
  EXPECT_EQ("hello world", response_data);

  HttpStreamFactory::set_next_protos("");
  HttpStreamFactory::set_use_alternate_protocols(false);
}

class CapturingProxyResolver : public ProxyResolver {
 public:
  CapturingProxyResolver() : ProxyResolver(false /* expects_pac_bytes */) {}
  virtual ~CapturingProxyResolver() {}

  virtual int GetProxyForURL(const GURL& url,
                             ProxyInfo* results,
                             CompletionCallback* callback,
                             RequestHandle* request,
                             const BoundNetLog& net_log) {
    ProxyServer proxy_server(ProxyServer::SCHEME_HTTP,
                             HostPortPair("myproxy", 80));
    results->UseProxyServer(proxy_server);
    resolved_.push_back(url);
    return OK;
  }

  virtual void CancelRequest(RequestHandle request) {
    NOTREACHED();
  }

  virtual void CancelSetPacScript() {
    NOTREACHED();
  }

  virtual int SetPacScript(const scoped_refptr<ProxyResolverScriptData>&,
                           CompletionCallback* /*callback*/) {
    return OK;
  }

  const std::vector<GURL>& resolved() const { return resolved_; }

 private:
  std::vector<GURL> resolved_;

  DISALLOW_COPY_AND_ASSIGN(CapturingProxyResolver);
};

TEST_F(HttpNetworkTransactionTest, UseAlternateProtocolForTunneledNpnSpdy) {
  HttpStreamFactory::set_use_alternate_protocols(true);
  HttpStreamFactory::set_next_protos(kExpectedNPNString);

  ProxyConfig proxy_config;
  proxy_config.set_auto_detect(true);
  proxy_config.set_pac_url(GURL("http://fooproxyurl"));

  CapturingProxyResolver* capturing_proxy_resolver =
      new CapturingProxyResolver();
  SessionDependencies session_deps(new ProxyService(
      new ProxyConfigServiceFixed(proxy_config), capturing_proxy_resolver,
      NULL));

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  MockRead data_reads[] = {
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead(kAlternateProtocolHttpHeader),
    MockRead("hello world"),
    MockRead(true, OK),
  };

  StaticSocketDataProvider first_transaction(
      data_reads, arraysize(data_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&first_transaction);

  SSLSocketDataProvider ssl(true, OK);
  ssl.next_proto_status = SSLClientSocket::kNextProtoNegotiated;
  ssl.next_proto = "spdy/2";
  ssl.was_npn_negotiated = true;
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  scoped_ptr<spdy::SpdyFrame> req(ConstructSpdyGet(NULL, 0, false, 1, LOWEST));
  MockWrite spdy_writes[] = {
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),  // 0
    CreateMockWrite(*req)  // 3
  };

  const char kCONNECTResponse[] = "HTTP/1.1 200 Connected\r\n\r\n";

  scoped_ptr<spdy::SpdyFrame> resp(ConstructSpdyGetSynReply(NULL, 0, 1));
  scoped_ptr<spdy::SpdyFrame> data(ConstructSpdyBodyFrame(1, true));
  MockRead spdy_reads[] = {
    MockRead(true, kCONNECTResponse, arraysize(kCONNECTResponse) - 1, 1),  // 1
    CreateMockRead(*resp.get(), 4),  // 2, 4
    CreateMockRead(*data.get(), 4),  // 5
    MockRead(true, 0, 0, 4),  // 6
  };

  scoped_refptr<OrderedSocketData> spdy_data(
      new OrderedSocketData(
          spdy_reads, arraysize(spdy_reads),
          spdy_writes, arraysize(spdy_writes)));
  session_deps.socket_factory.AddSocketDataProvider(spdy_data);

  MockConnect never_finishing_connect(false, ERR_IO_PENDING);
  StaticSocketDataProvider hanging_non_alternate_protocol_socket(
      NULL, 0, NULL, 0);
  hanging_non_alternate_protocol_socket.set_connect_data(
      never_finishing_connect);
  session_deps.socket_factory.AddSocketDataProvider(
      &hanging_non_alternate_protocol_socket);

  TestCompletionCallback callback;

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));
  scoped_ptr<HttpNetworkTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback.WaitForResult());

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());
  EXPECT_FALSE(response->was_fetched_via_spdy);
  EXPECT_FALSE(response->was_npn_negotiated);

  std::string response_data;
  ASSERT_EQ(OK, ReadTransaction(trans.get(), &response_data));
  EXPECT_EQ("hello world", response_data);

  trans.reset(new HttpNetworkTransaction(session));

  rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback.WaitForResult());

  response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());
  EXPECT_TRUE(response->was_fetched_via_spdy);
  EXPECT_TRUE(response->was_npn_negotiated);

  ASSERT_EQ(OK, ReadTransaction(trans.get(), &response_data));
  EXPECT_EQ("hello!", response_data);
  ASSERT_EQ(3u, capturing_proxy_resolver->resolved().size());
  EXPECT_EQ("http://www.google.com/",
            capturing_proxy_resolver->resolved()[0].spec());
  EXPECT_EQ("https://www.google.com/",
            capturing_proxy_resolver->resolved()[1].spec());

  HttpStreamFactory::set_next_protos("");
  HttpStreamFactory::set_use_alternate_protocols(false);
}

TEST_F(HttpNetworkTransactionTest,
       UseAlternateProtocolForNpnSpdyWithExistingSpdySession) {
  HttpStreamFactory::set_use_alternate_protocols(true);
  HttpStreamFactory::set_next_protos(kExpectedNPNString);
  SessionDependencies session_deps;

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  MockRead data_reads[] = {
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead(kAlternateProtocolHttpHeader),
    MockRead("hello world"),
    MockRead(true, OK),
  };

  StaticSocketDataProvider first_transaction(
      data_reads, arraysize(data_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&first_transaction);

  SSLSocketDataProvider ssl(true, OK);
  ssl.next_proto_status = SSLClientSocket::kNextProtoNegotiated;
  ssl.next_proto = "spdy/2";
  ssl.was_npn_negotiated = true;
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);
  // Make sure we use ssl for spdy here.
  SpdySession::SetSSLMode(true);

  scoped_ptr<spdy::SpdyFrame> req(ConstructSpdyGet(NULL, 0, false, 1, LOWEST));
  MockWrite spdy_writes[] = { CreateMockWrite(*req) };

  scoped_ptr<spdy::SpdyFrame> resp(ConstructSpdyGetSynReply(NULL, 0, 1));
  scoped_ptr<spdy::SpdyFrame> data(ConstructSpdyBodyFrame(1, true));
  MockRead spdy_reads[] = {
    CreateMockRead(*resp),
    CreateMockRead(*data),
    MockRead(true, 0, 0),
  };

  scoped_refptr<DelayedSocketData> spdy_data(
      new DelayedSocketData(
          1,  // wait for one write to finish before reading.
          spdy_reads, arraysize(spdy_reads),
          spdy_writes, arraysize(spdy_writes)));
  session_deps.socket_factory.AddSocketDataProvider(spdy_data);

  TestCompletionCallback callback;

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  scoped_ptr<HttpNetworkTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback.WaitForResult());

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());

  std::string response_data;
  ASSERT_EQ(OK, ReadTransaction(trans.get(), &response_data));
  EXPECT_EQ("hello world", response_data);

  // Set up an initial SpdySession in the pool to reuse.
  HostPortPair host_port_pair("www.google.com", 443);
  HostPortProxyPair pair(host_port_pair, ProxyServer::Direct());
  scoped_refptr<SpdySession> spdy_session =
      session->spdy_session_pool()->Get(pair, BoundNetLog());
  scoped_refptr<TransportSocketParams> transport_params(
      new TransportSocketParams(host_port_pair, MEDIUM, GURL(), false, false));

  scoped_ptr<ClientSocketHandle> connection(new ClientSocketHandle);
  EXPECT_EQ(ERR_IO_PENDING,
            connection->Init(host_port_pair.ToString(),
                             transport_params,
                             LOWEST,
                             &callback,
                             session->transport_socket_pool(),
                             BoundNetLog()));
  EXPECT_EQ(OK, callback.WaitForResult());

  SSLConfig ssl_config;
  session->ssl_config_service()->GetSSLConfig(&ssl_config);
  scoped_ptr<ClientSocketHandle> ssl_connection(new ClientSocketHandle);
  ssl_connection->set_socket(session_deps.socket_factory.CreateSSLClientSocket(
      connection.release(), HostPortPair("" , 443), ssl_config,
      NULL /* ssl_host_info */, session_deps.cert_verifier.get(), NULL));
  EXPECT_EQ(ERR_IO_PENDING, ssl_connection->socket()->Connect(&callback));
  EXPECT_EQ(OK, callback.WaitForResult());

  EXPECT_EQ(OK, spdy_session->InitializeWithSocket(ssl_connection.release(),
                                                   true, OK));

  trans.reset(new HttpNetworkTransaction(session));

  rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback.WaitForResult());

  response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());
  EXPECT_TRUE(response->was_fetched_via_spdy);
  EXPECT_TRUE(response->was_npn_negotiated);

  ASSERT_EQ(OK, ReadTransaction(trans.get(), &response_data));
  EXPECT_EQ("hello!", response_data);

  HttpStreamFactory::set_next_protos("");
  HttpStreamFactory::set_use_alternate_protocols(false);
}

// GenerateAuthToken is a mighty big test.
// It tests all permutation of GenerateAuthToken behavior:
//   - Synchronous and Asynchronous completion.
//   - OK or error on completion.
//   - Direct connection, non-authenticating proxy, and authenticating proxy.
//   - HTTP or HTTPS backend (to include proxy tunneling).
//   - Non-authenticating and authenticating backend.
//
// In all, there are 44 reasonable permuations (for example, if there are
// problems generating an auth token for an authenticating proxy, we don't
// need to test all permutations of the backend server).
//
// The test proceeds by going over each of the configuration cases, and
// potentially running up to three rounds in each of the tests. The TestConfig
// specifies both the configuration for the test as well as the expectations
// for the results.
TEST_F(HttpNetworkTransactionTest, GenerateAuthToken) {
  static const char kServer[] = "http://www.example.com";
  static const char kSecureServer[] = "https://www.example.com";
  static const char kProxy[] = "myproxy:70";
  const int kAuthErr = ERR_INVALID_AUTH_CREDENTIALS;

  enum AuthTiming {
    AUTH_NONE,
    AUTH_SYNC,
    AUTH_ASYNC,
  };

  const MockWrite kGet(
      "GET / HTTP/1.1\r\n"
      "Host: www.example.com\r\n"
      "Connection: keep-alive\r\n\r\n");
  const MockWrite kGetProxy(
      "GET http://www.example.com/ HTTP/1.1\r\n"
      "Host: www.example.com\r\n"
      "Proxy-Connection: keep-alive\r\n\r\n");
  const MockWrite kGetAuth(
      "GET / HTTP/1.1\r\n"
      "Host: www.example.com\r\n"
      "Connection: keep-alive\r\n"
      "Authorization: auth_token\r\n\r\n");
  const MockWrite kGetProxyAuth(
      "GET http://www.example.com/ HTTP/1.1\r\n"
      "Host: www.example.com\r\n"
      "Proxy-Connection: keep-alive\r\n"
      "Proxy-Authorization: auth_token\r\n\r\n");
  const MockWrite kGetAuthThroughProxy(
      "GET http://www.example.com/ HTTP/1.1\r\n"
      "Host: www.example.com\r\n"
      "Proxy-Connection: keep-alive\r\n"
      "Authorization: auth_token\r\n\r\n");
  const MockWrite kGetAuthWithProxyAuth(
      "GET http://www.example.com/ HTTP/1.1\r\n"
      "Host: www.example.com\r\n"
      "Proxy-Connection: keep-alive\r\n"
      "Proxy-Authorization: auth_token\r\n"
      "Authorization: auth_token\r\n\r\n");
  const MockWrite kConnect(
      "CONNECT www.example.com:443 HTTP/1.1\r\n"
      "Host: www.example.com\r\n"
      "Proxy-Connection: keep-alive\r\n\r\n");
  const MockWrite kConnectProxyAuth(
      "CONNECT www.example.com:443 HTTP/1.1\r\n"
      "Host: www.example.com\r\n"
      "Proxy-Connection: keep-alive\r\n"
      "Proxy-Authorization: auth_token\r\n\r\n");

  const MockRead kSuccess(
      "HTTP/1.1 200 OK\r\n"
      "Content-Type: text/html; charset=iso-8859-1\r\n"
      "Content-Length: 3\r\n\r\n"
      "Yes");
  const MockRead kFailure(
      "Should not be called.");
  const MockRead kServerChallenge(
      "HTTP/1.1 401 Unauthorized\r\n"
      "WWW-Authenticate: Mock realm=server\r\n"
      "Content-Type: text/html; charset=iso-8859-1\r\n"
      "Content-Length: 14\r\n\r\n"
      "Unauthorized\r\n");
  const MockRead kProxyChallenge(
      "HTTP/1.1 407 Unauthorized\r\n"
      "Proxy-Authenticate: Mock realm=proxy\r\n"
      "Proxy-Connection: close\r\n"
      "Content-Type: text/html; charset=iso-8859-1\r\n"
      "Content-Length: 14\r\n\r\n"
      "Unauthorized\r\n");
  const MockRead kProxyConnected(
      "HTTP/1.1 200 Connection Established\r\n\r\n");

  // NOTE(cbentzel): I wanted TestReadWriteRound to be a simple struct with
  // no constructors, but the C++ compiler on Windows warns about
  // unspecified data in compound literals. So, moved to using constructors,
  // and TestRound's created with the default constructor should not be used.
  struct TestRound {
    TestRound()
        : expected_rv(ERR_UNEXPECTED),
          extra_write(NULL),
          extra_read(NULL) {
    }
    TestRound(const MockWrite& write_arg, const MockRead& read_arg,
              int expected_rv_arg)
        : write(write_arg),
          read(read_arg),
          expected_rv(expected_rv_arg),
          extra_write(NULL),
          extra_read(NULL) {
    }
    TestRound(const MockWrite& write_arg, const MockRead& read_arg,
              int expected_rv_arg, const MockWrite* extra_write_arg,
              const MockWrite* extra_read_arg)
        : write(write_arg),
          read(read_arg),
          expected_rv(expected_rv_arg),
          extra_write(extra_write_arg),
          extra_read(extra_read_arg) {
    }
    MockWrite write;
    MockRead read;
    int expected_rv;
    const MockWrite* extra_write;
    const MockRead* extra_read;
  };

  static const int kNoSSL = 500;

  struct TestConfig {
    const char* proxy_url;
    AuthTiming proxy_auth_timing;
    int proxy_auth_rv;
    const char* server_url;
    AuthTiming server_auth_timing;
    int server_auth_rv;
    int num_auth_rounds;
    int first_ssl_round;
    TestRound rounds[3];
  } test_configs[] = {
    // Non-authenticating HTTP server with a direct connection.
    { NULL, AUTH_NONE, OK, kServer, AUTH_NONE, OK, 1, kNoSSL,
      { TestRound(kGet, kSuccess, OK)}},
    // Authenticating HTTP server with a direct connection.
    { NULL, AUTH_NONE, OK, kServer, AUTH_SYNC, OK, 2, kNoSSL,
      { TestRound(kGet, kServerChallenge, OK),
        TestRound(kGetAuth, kSuccess, OK)}},
    { NULL, AUTH_NONE, OK, kServer, AUTH_SYNC, kAuthErr, 2, kNoSSL,
      { TestRound(kGet, kServerChallenge, OK),
        TestRound(kGetAuth, kFailure, kAuthErr)}},
    { NULL, AUTH_NONE, OK, kServer, AUTH_ASYNC, OK, 2, kNoSSL,
      { TestRound(kGet, kServerChallenge, OK),
        TestRound(kGetAuth, kSuccess, OK)}},
    { NULL, AUTH_NONE, OK, kServer, AUTH_ASYNC, kAuthErr, 2, kNoSSL,
      { TestRound(kGet, kServerChallenge, OK),
        TestRound(kGetAuth, kFailure, kAuthErr)}},
    // Non-authenticating HTTP server through a non-authenticating proxy.
    { kProxy, AUTH_NONE, OK, kServer, AUTH_NONE, OK, 1, kNoSSL,
      { TestRound(kGetProxy, kSuccess, OK)}},
    // Authenticating HTTP server through a non-authenticating proxy.
    { kProxy, AUTH_NONE, OK, kServer, AUTH_SYNC, OK, 2, kNoSSL,
      { TestRound(kGetProxy, kServerChallenge, OK),
        TestRound(kGetAuthThroughProxy, kSuccess, OK)}},
    { kProxy, AUTH_NONE, OK, kServer, AUTH_SYNC, kAuthErr, 2, kNoSSL,
      { TestRound(kGetProxy, kServerChallenge, OK),
        TestRound(kGetAuthThroughProxy, kFailure, kAuthErr)}},
    { kProxy, AUTH_NONE, OK, kServer, AUTH_ASYNC, OK, 2, kNoSSL,
      { TestRound(kGetProxy, kServerChallenge, OK),
        TestRound(kGetAuthThroughProxy, kSuccess, OK)}},
    { kProxy, AUTH_NONE, OK, kServer, AUTH_ASYNC, kAuthErr, 2, kNoSSL,
      { TestRound(kGetProxy, kServerChallenge, OK),
        TestRound(kGetAuthThroughProxy, kFailure, kAuthErr)}},
    // Non-authenticating HTTP server through an authenticating proxy.
    { kProxy, AUTH_SYNC, OK, kServer, AUTH_NONE, OK, 2, kNoSSL,
      { TestRound(kGetProxy, kProxyChallenge, OK),
        TestRound(kGetProxyAuth, kSuccess, OK)}},
    { kProxy, AUTH_SYNC, kAuthErr, kServer, AUTH_NONE, OK, 2, kNoSSL,
      { TestRound(kGetProxy, kProxyChallenge, OK),
        TestRound(kGetProxyAuth, kFailure, kAuthErr)}},
    { kProxy, AUTH_ASYNC, OK, kServer, AUTH_NONE, OK, 2, kNoSSL,
      { TestRound(kGetProxy, kProxyChallenge, OK),
        TestRound(kGetProxyAuth, kSuccess, OK)}},
    { kProxy, AUTH_ASYNC, kAuthErr, kServer, AUTH_NONE, OK, 2, kNoSSL,
      { TestRound(kGetProxy, kProxyChallenge, OK),
        TestRound(kGetProxyAuth, kFailure, kAuthErr)}},
    // Authenticating HTTP server through an authenticating proxy.
    { kProxy, AUTH_SYNC, OK, kServer, AUTH_SYNC, OK, 3, kNoSSL,
      { TestRound(kGetProxy, kProxyChallenge, OK),
        TestRound(kGetProxyAuth, kServerChallenge, OK),
        TestRound(kGetAuthWithProxyAuth, kSuccess, OK)}},
    { kProxy, AUTH_SYNC, OK, kServer, AUTH_SYNC, kAuthErr, 3, kNoSSL,
      { TestRound(kGetProxy, kProxyChallenge, OK),
        TestRound(kGetProxyAuth, kServerChallenge, OK),
        TestRound(kGetAuthWithProxyAuth, kFailure, kAuthErr)}},
    { kProxy, AUTH_ASYNC, OK, kServer, AUTH_SYNC, OK, 3, kNoSSL,
      { TestRound(kGetProxy, kProxyChallenge, OK),
        TestRound(kGetProxyAuth, kServerChallenge, OK),
        TestRound(kGetAuthWithProxyAuth, kSuccess, OK)}},
    { kProxy, AUTH_ASYNC, OK, kServer, AUTH_SYNC, kAuthErr, 3, kNoSSL,
      { TestRound(kGetProxy, kProxyChallenge, OK),
        TestRound(kGetProxyAuth, kServerChallenge, OK),
        TestRound(kGetAuthWithProxyAuth, kFailure, kAuthErr)}},
    { kProxy, AUTH_SYNC, OK, kServer, AUTH_ASYNC, OK, 3, kNoSSL,
      { TestRound(kGetProxy, kProxyChallenge, OK),
        TestRound(kGetProxyAuth, kServerChallenge, OK),
        TestRound(kGetAuthWithProxyAuth, kSuccess, OK)}},
    { kProxy, AUTH_SYNC, OK, kServer, AUTH_ASYNC, kAuthErr, 3, kNoSSL,
      { TestRound(kGetProxy, kProxyChallenge, OK),
        TestRound(kGetProxyAuth, kServerChallenge, OK),
        TestRound(kGetAuthWithProxyAuth, kFailure, kAuthErr)}},
    { kProxy, AUTH_ASYNC, OK, kServer, AUTH_ASYNC, OK, 3, kNoSSL,
      { TestRound(kGetProxy, kProxyChallenge, OK),
        TestRound(kGetProxyAuth, kServerChallenge, OK),
        TestRound(kGetAuthWithProxyAuth, kSuccess, OK)}},
    { kProxy, AUTH_ASYNC, OK, kServer, AUTH_ASYNC, kAuthErr, 3, kNoSSL,
      { TestRound(kGetProxy, kProxyChallenge, OK),
        TestRound(kGetProxyAuth, kServerChallenge, OK),
        TestRound(kGetAuthWithProxyAuth, kFailure, kAuthErr)}},
    // Non-authenticating HTTPS server with a direct connection.
    { NULL, AUTH_NONE, OK, kSecureServer, AUTH_NONE, OK, 1, 0,
      { TestRound(kGet, kSuccess, OK)}},
    // Authenticating HTTPS server with a direct connection.
    { NULL, AUTH_NONE, OK, kSecureServer, AUTH_SYNC, OK, 2, 0,
      { TestRound(kGet, kServerChallenge, OK),
        TestRound(kGetAuth, kSuccess, OK)}},
    { NULL, AUTH_NONE, OK, kSecureServer, AUTH_SYNC, kAuthErr, 2, 0,
      { TestRound(kGet, kServerChallenge, OK),
        TestRound(kGetAuth, kFailure, kAuthErr)}},
    { NULL, AUTH_NONE, OK, kSecureServer, AUTH_ASYNC, OK, 2, 0,
      { TestRound(kGet, kServerChallenge, OK),
        TestRound(kGetAuth, kSuccess, OK)}},
    { NULL, AUTH_NONE, OK, kSecureServer, AUTH_ASYNC, kAuthErr, 2, 0,
      { TestRound(kGet, kServerChallenge, OK),
        TestRound(kGetAuth, kFailure, kAuthErr)}},
    // Non-authenticating HTTPS server with a non-authenticating proxy.
    { kProxy, AUTH_NONE, OK, kSecureServer, AUTH_NONE, OK, 1, 0,
      { TestRound(kConnect, kProxyConnected, OK, &kGet, &kSuccess)}},
    // Authenticating HTTPS server through a non-authenticating proxy.
    { kProxy, AUTH_NONE, OK, kSecureServer, AUTH_SYNC, OK, 2, 0,
      { TestRound(kConnect, kProxyConnected, OK, &kGet, &kServerChallenge),
        TestRound(kGetAuth, kSuccess, OK)}},
    { kProxy, AUTH_NONE, OK, kSecureServer, AUTH_SYNC, kAuthErr, 2, 0,
      { TestRound(kConnect, kProxyConnected, OK, &kGet, &kServerChallenge),
        TestRound(kGetAuth, kFailure, kAuthErr)}},
    { kProxy, AUTH_NONE, OK, kSecureServer, AUTH_ASYNC, OK, 2, 0,
      { TestRound(kConnect, kProxyConnected, OK, &kGet, &kServerChallenge),
        TestRound(kGetAuth, kSuccess, OK)}},
    { kProxy, AUTH_NONE, OK, kSecureServer, AUTH_ASYNC, kAuthErr, 2, 0,
      { TestRound(kConnect, kProxyConnected, OK, &kGet, &kServerChallenge),
        TestRound(kGetAuth, kFailure, kAuthErr)}},
    // Non-Authenticating HTTPS server through an authenticating proxy.
    { kProxy, AUTH_SYNC, OK, kSecureServer, AUTH_NONE, OK, 2, 1,
      { TestRound(kConnect, kProxyChallenge, OK),
        TestRound(kConnectProxyAuth, kProxyConnected, OK, &kGet, &kSuccess)}},
    { kProxy, AUTH_SYNC, kAuthErr, kSecureServer, AUTH_NONE, OK, 2, kNoSSL,
      { TestRound(kConnect, kProxyChallenge, OK),
        TestRound(kConnectProxyAuth, kFailure, kAuthErr)}},
    { kProxy, AUTH_ASYNC, OK, kSecureServer, AUTH_NONE, OK, 2, 1,
      { TestRound(kConnect, kProxyChallenge, OK),
        TestRound(kConnectProxyAuth, kProxyConnected, OK, &kGet, &kSuccess)}},
    { kProxy, AUTH_ASYNC, kAuthErr, kSecureServer, AUTH_NONE, OK, 2, kNoSSL,
      { TestRound(kConnect, kProxyChallenge, OK),
        TestRound(kConnectProxyAuth, kFailure, kAuthErr)}},
    // Authenticating HTTPS server through an authenticating proxy.
    { kProxy, AUTH_SYNC, OK, kSecureServer, AUTH_SYNC, OK, 3, 1,
      { TestRound(kConnect, kProxyChallenge, OK),
        TestRound(kConnectProxyAuth, kProxyConnected, OK,
                  &kGet, &kServerChallenge),
        TestRound(kGetAuth, kSuccess, OK)}},
    { kProxy, AUTH_SYNC, OK, kSecureServer, AUTH_SYNC, kAuthErr, 3, 1,
      { TestRound(kConnect, kProxyChallenge, OK),
        TestRound(kConnectProxyAuth, kProxyConnected, OK,
                  &kGet, &kServerChallenge),
        TestRound(kGetAuth, kFailure, kAuthErr)}},
    { kProxy, AUTH_ASYNC, OK, kSecureServer, AUTH_SYNC, OK, 3, 1,
      { TestRound(kConnect, kProxyChallenge, OK),
        TestRound(kConnectProxyAuth, kProxyConnected, OK,
                  &kGet, &kServerChallenge),
        TestRound(kGetAuth, kSuccess, OK)}},
    { kProxy, AUTH_ASYNC, OK, kSecureServer, AUTH_SYNC, kAuthErr, 3, 1,
      { TestRound(kConnect, kProxyChallenge, OK),
        TestRound(kConnectProxyAuth, kProxyConnected, OK,
                  &kGet, &kServerChallenge),
        TestRound(kGetAuth, kFailure, kAuthErr)}},
    { kProxy, AUTH_SYNC, OK, kSecureServer, AUTH_ASYNC, OK, 3, 1,
      { TestRound(kConnect, kProxyChallenge, OK),
        TestRound(kConnectProxyAuth, kProxyConnected, OK,
                  &kGet, &kServerChallenge),
        TestRound(kGetAuth, kSuccess, OK)}},
    { kProxy, AUTH_SYNC, OK, kSecureServer, AUTH_ASYNC, kAuthErr, 3, 1,
      { TestRound(kConnect, kProxyChallenge, OK),
        TestRound(kConnectProxyAuth, kProxyConnected, OK,
                  &kGet, &kServerChallenge),
        TestRound(kGetAuth, kFailure, kAuthErr)}},
    { kProxy, AUTH_ASYNC, OK, kSecureServer, AUTH_ASYNC, OK, 3, 1,
      { TestRound(kConnect, kProxyChallenge, OK),
        TestRound(kConnectProxyAuth, kProxyConnected, OK,
                  &kGet, &kServerChallenge),
        TestRound(kGetAuth, kSuccess, OK)}},
    { kProxy, AUTH_ASYNC, OK, kSecureServer, AUTH_ASYNC, kAuthErr, 3, 1,
      { TestRound(kConnect, kProxyChallenge, OK),
        TestRound(kConnectProxyAuth, kProxyConnected, OK,
                  &kGet, &kServerChallenge),
        TestRound(kGetAuth, kFailure, kAuthErr)}},
  };

  SessionDependencies session_deps;
  HttpAuthHandlerMock::Factory* auth_factory(
      new HttpAuthHandlerMock::Factory());
  session_deps.http_auth_handler_factory.reset(auth_factory);

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(test_configs); ++i) {
    const TestConfig& test_config = test_configs[i];

    // Set up authentication handlers as necessary.
    if (test_config.proxy_auth_timing != AUTH_NONE) {
      HttpAuthHandlerMock* auth_handler(new HttpAuthHandlerMock());
      std::string auth_challenge = "Mock realm=proxy";
      GURL origin(test_config.proxy_url);
      HttpAuth::ChallengeTokenizer tokenizer(auth_challenge.begin(),
                                             auth_challenge.end());
      auth_handler->InitFromChallenge(&tokenizer, HttpAuth::AUTH_PROXY,
                                      origin, BoundNetLog());
      auth_handler->SetGenerateExpectation(
          test_config.proxy_auth_timing == AUTH_ASYNC,
          test_config.proxy_auth_rv);
      auth_factory->set_mock_handler(auth_handler, HttpAuth::AUTH_PROXY);
    }
    if (test_config.server_auth_timing != AUTH_NONE) {
      HttpAuthHandlerMock* auth_handler(new HttpAuthHandlerMock());
      std::string auth_challenge = "Mock realm=server";
      GURL origin(test_config.server_url);
      HttpAuth::ChallengeTokenizer tokenizer(auth_challenge.begin(),
                                             auth_challenge.end());
      auth_handler->InitFromChallenge(&tokenizer, HttpAuth::AUTH_SERVER,
                                      origin, BoundNetLog());
      auth_handler->SetGenerateExpectation(
          test_config.server_auth_timing == AUTH_ASYNC,
          test_config.server_auth_rv);
      auth_factory->set_mock_handler(auth_handler, HttpAuth::AUTH_SERVER);
    }
    if (test_config.proxy_url) {
      session_deps.proxy_service.reset(
          ProxyService::CreateFixed(test_config.proxy_url));
    } else {
      session_deps.proxy_service.reset(ProxyService::CreateDirect());
    }

    HttpRequestInfo request;
    request.method = "GET";
    request.url = GURL(test_config.server_url);
    request.load_flags = 0;

    scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));
    HttpNetworkTransaction trans(CreateSession(&session_deps));

    for (int round = 0; round < test_config.num_auth_rounds; ++round) {
      const TestRound& read_write_round = test_config.rounds[round];

      // Set up expected reads and writes.
      MockRead reads[2];
      reads[0] = read_write_round.read;
      size_t length_reads = 1;
      if (read_write_round.extra_read) {
        reads[1] = *read_write_round.extra_read;
        length_reads = 2;
      }

      MockWrite writes[2];
      writes[0] = read_write_round.write;
      size_t length_writes = 1;
      if (read_write_round.extra_write) {
        writes[1] = *read_write_round.extra_write;
        length_writes = 2;
      }
      StaticSocketDataProvider data_provider(
          reads, length_reads, writes, length_writes);
      session_deps.socket_factory.AddSocketDataProvider(&data_provider);

      // Add an SSL sequence if necessary.
      SSLSocketDataProvider ssl_socket_data_provider(false, OK);
      if (round >= test_config.first_ssl_round)
        session_deps.socket_factory.AddSSLSocketDataProvider(
            &ssl_socket_data_provider);

      // Start or restart the transaction.
      TestCompletionCallback callback;
      int rv;
      if (round == 0) {
        rv = trans.Start(&request, &callback, BoundNetLog());
      } else {
        rv = trans.RestartWithAuth(kFoo, kBar, &callback);
      }
      if (rv == ERR_IO_PENDING)
        rv = callback.WaitForResult();

      // Compare results with expected data.
      EXPECT_EQ(read_write_round.expected_rv, rv);
      const HttpResponseInfo* response = trans.GetResponseInfo();
      if (read_write_round.expected_rv == OK) {
        EXPECT_FALSE(response == NULL);
      } else {
        EXPECT_TRUE(response == NULL);
        EXPECT_EQ(round + 1, test_config.num_auth_rounds);
        continue;
      }
      if (round + 1 < test_config.num_auth_rounds) {
        EXPECT_FALSE(response->auth_challenge.get() == NULL);
      } else {
        EXPECT_TRUE(response->auth_challenge.get() == NULL);
      }
    }
  }
}

TEST_F(HttpNetworkTransactionTest, MultiRoundAuth) {
  // Do multi-round authentication and make sure it works correctly.
  SessionDependencies session_deps;
  HttpAuthHandlerMock::Factory* auth_factory(
      new HttpAuthHandlerMock::Factory());
  session_deps.http_auth_handler_factory.reset(auth_factory);
  session_deps.proxy_service.reset(ProxyService::CreateDirect());
  session_deps.host_resolver->rules()->AddRule("www.example.com", "10.0.0.1");
  session_deps.host_resolver->set_synchronous_mode(true);

  HttpAuthHandlerMock* auth_handler(new HttpAuthHandlerMock());
  auth_handler->set_connection_based(true);
  std::string auth_challenge = "Mock realm=server";
  GURL origin("http://www.example.com");
  HttpAuth::ChallengeTokenizer tokenizer(auth_challenge.begin(),
                                         auth_challenge.end());
  auth_handler->InitFromChallenge(&tokenizer, HttpAuth::AUTH_SERVER,
                                  origin, BoundNetLog());
  auth_factory->set_mock_handler(auth_handler, HttpAuth::AUTH_SERVER);

  int rv = OK;
  const HttpResponseInfo* response = NULL;
  HttpRequestInfo request;
  request.method = "GET";
  request.url = origin;
  request.load_flags = 0;

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  // Use a TCP Socket Pool with only one connection per group. This is used
  // to validate that the TCP socket is not released to the pool between
  // each round of multi-round authentication.
  HttpNetworkSessionPeer session_peer(session);
  ClientSocketPoolHistograms transport_pool_histograms("SmallTCP");
  TransportClientSocketPool* transport_pool = new TransportClientSocketPool(
      50,  // Max sockets for pool
      1,   // Max sockets per group
      &transport_pool_histograms,
      session_deps.host_resolver.get(),
      &session_deps.socket_factory,
      session_deps.net_log);
  session_peer.SetTransportSocketPool(transport_pool);

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));
  TestCompletionCallback callback;

  const MockWrite kGet(
      "GET / HTTP/1.1\r\n"
      "Host: www.example.com\r\n"
      "Connection: keep-alive\r\n\r\n");
  const MockWrite kGetAuth(
      "GET / HTTP/1.1\r\n"
      "Host: www.example.com\r\n"
      "Connection: keep-alive\r\n"
      "Authorization: auth_token\r\n\r\n");

  const MockRead kServerChallenge(
      "HTTP/1.1 401 Unauthorized\r\n"
      "WWW-Authenticate: Mock realm=server\r\n"
      "Content-Type: text/html; charset=iso-8859-1\r\n"
      "Content-Length: 14\r\n\r\n"
      "Unauthorized\r\n");
  const MockRead kSuccess(
      "HTTP/1.1 200 OK\r\n"
      "Content-Type: text/html; charset=iso-8859-1\r\n"
      "Content-Length: 3\r\n\r\n"
      "Yes");

  MockWrite writes[] = {
    // First round
    kGet,
    // Second round
    kGetAuth,
    // Third round
    kGetAuth,
    // Fourth round
    kGetAuth,
    // Competing request
    kGet,
  };
  MockRead reads[] = {
    // First round
    kServerChallenge,
    // Second round
    kServerChallenge,
    // Third round
    kServerChallenge,
    // Fourth round
    kSuccess,
    // Competing response
    kSuccess,
  };
  StaticSocketDataProvider data_provider(reads, arraysize(reads),
                                         writes, arraysize(writes));
  session_deps.socket_factory.AddSocketDataProvider(&data_provider);

  const char* const kSocketGroup = "www.example.com:80";

  // First round of authentication.
  auth_handler->SetGenerateExpectation(false, OK);
  rv = trans->Start(&request, &callback, BoundNetLog());
  if (rv == ERR_IO_PENDING)
    rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
  response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);
  EXPECT_FALSE(response->auth_challenge.get() == NULL);
  EXPECT_EQ(0, transport_pool->IdleSocketCountInGroup(kSocketGroup));

  // In between rounds, another request comes in for the same domain.
  // It should not be able to grab the TCP socket that trans has already
  // claimed.
  scoped_ptr<HttpTransaction> trans_compete(
      new HttpNetworkTransaction(session));
  TestCompletionCallback callback_compete;
  rv = trans_compete->Start(&request, &callback_compete, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  // callback_compete.WaitForResult at this point would stall forever,
  // since the HttpNetworkTransaction does not release the request back to
  // the pool until after authentication completes.

  // Second round of authentication.
  auth_handler->SetGenerateExpectation(false, OK);
  rv = trans->RestartWithAuth(kFoo, kBar, &callback);
  if (rv == ERR_IO_PENDING)
    rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
  response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);
  EXPECT_TRUE(response->auth_challenge.get() == NULL);
  EXPECT_EQ(0, transport_pool->IdleSocketCountInGroup(kSocketGroup));

  // Third round of authentication.
  auth_handler->SetGenerateExpectation(false, OK);
  rv = trans->RestartWithAuth(string16(), string16(), &callback);
  if (rv == ERR_IO_PENDING)
    rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
  response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);
  EXPECT_TRUE(response->auth_challenge.get() == NULL);
  EXPECT_EQ(0, transport_pool->IdleSocketCountInGroup(kSocketGroup));

  // Fourth round of authentication, which completes successfully.
  auth_handler->SetGenerateExpectation(false, OK);
  rv = trans->RestartWithAuth(string16(), string16(), &callback);
  if (rv == ERR_IO_PENDING)
    rv = callback.WaitForResult();
  EXPECT_EQ(OK, rv);
  response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);
  EXPECT_TRUE(response->auth_challenge.get() == NULL);
  EXPECT_EQ(0, transport_pool->IdleSocketCountInGroup(kSocketGroup));

  // Read the body since the fourth round was successful. This will also
  // release the socket back to the pool.
  scoped_refptr<IOBufferWithSize> io_buf(new IOBufferWithSize(50));
  rv = trans->Read(io_buf, io_buf->size(), &callback);
  if (rv == ERR_IO_PENDING)
    rv = callback.WaitForResult();
  EXPECT_EQ(3, rv);
  rv = trans->Read(io_buf, io_buf->size(), &callback);
  EXPECT_EQ(0, rv);
  // There are still 0 idle sockets, since the trans_compete transaction
  // will be handed it immediately after trans releases it to the group.
  EXPECT_EQ(0, transport_pool->IdleSocketCountInGroup(kSocketGroup));

  // The competing request can now finish. Wait for the headers and then
  // read the body.
  rv = callback_compete.WaitForResult();
  EXPECT_EQ(OK, rv);
  rv = trans_compete->Read(io_buf, io_buf->size(), &callback);
  if (rv == ERR_IO_PENDING)
    rv = callback.WaitForResult();
  EXPECT_EQ(3, rv);
  rv = trans_compete->Read(io_buf, io_buf->size(), &callback);
  EXPECT_EQ(0, rv);

  // Finally, the socket is released to the group.
  EXPECT_EQ(1, transport_pool->IdleSocketCountInGroup(kSocketGroup));
}

class TLSDecompressionFailureSocketDataProvider : public SocketDataProvider {
 public:
  explicit TLSDecompressionFailureSocketDataProvider(bool fail_all)
      : fail_all_(fail_all) {
  }

  virtual MockRead GetNextRead() {
    if (fail_all_)
      return MockRead(false /* async */, ERR_SSL_DECOMPRESSION_FAILURE_ALERT);

    return MockRead(false /* async */,
                    "HTTP/1.1 200 OK\r\nContent-Length: 3\r\n\r\nok.\r\n");
  }

  virtual MockWriteResult OnWrite(const std::string& data) {
    return MockWriteResult(false /* async */, data.size());
  }

  void Reset() {
  }

 private:
  const bool fail_all_;
};

// Test that we restart a connection when we see a decompression failure from
// the peer during the handshake. (In the real world we'll restart with SSLv3
// and we won't offer DEFLATE in that case.)
TEST_F(HttpNetworkTransactionTest, RestartAfterTLSDecompressionFailure) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://tlsdecompressionfailure.example.com/");
  request.load_flags = 0;

  SessionDependencies session_deps;
  TLSDecompressionFailureSocketDataProvider socket_data_provider1(
      false /* fail all reads */);
  TLSDecompressionFailureSocketDataProvider socket_data_provider2(false);
  SSLSocketDataProvider ssl_socket_data_provider1(
      false, ERR_SSL_DECOMPRESSION_FAILURE_ALERT);
  SSLSocketDataProvider ssl_socket_data_provider2(false, OK);
  session_deps.socket_factory.AddSocketDataProvider(&socket_data_provider1);
  session_deps.socket_factory.AddSocketDataProvider(&socket_data_provider2);
  session_deps.socket_factory.AddSSLSocketDataProvider(
      &ssl_socket_data_provider1);
  session_deps.socket_factory.AddSSLSocketDataProvider(
      &ssl_socket_data_provider2);

  // Work around http://crbug.com/37454
  StaticSocketDataProvider bug37454_connection;
  bug37454_connection.set_connect_data(MockConnect(true, ERR_UNEXPECTED));
  session_deps.socket_factory.AddSocketDataProvider(&bug37454_connection);

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));
  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));
  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback.WaitForResult());

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());

  std::string response_data;
  ASSERT_EQ(OK, ReadTransaction(trans.get(), &response_data));
  EXPECT_EQ("ok.", response_data);
}

// Test that we restart a connection if we get a decompression failure from the
// peer while reading the first bytes from the connection. This occurs when the
// peer cannot handle DEFLATE but we're using False Start, so we don't notice
// in the handshake.
TEST_F(HttpNetworkTransactionTest,
       RestartAfterTLSDecompressionFailureWithFalseStart) {
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://tlsdecompressionfailure2.example.com/");
  request.load_flags = 0;

  SessionDependencies session_deps;
  TLSDecompressionFailureSocketDataProvider socket_data_provider1(
      true /* fail all reads */);
  TLSDecompressionFailureSocketDataProvider socket_data_provider2(false);
  SSLSocketDataProvider ssl_socket_data_provider1(false, OK);
  SSLSocketDataProvider ssl_socket_data_provider2(false, OK);
  session_deps.socket_factory.AddSocketDataProvider(&socket_data_provider1);
  session_deps.socket_factory.AddSocketDataProvider(&socket_data_provider2);
  session_deps.socket_factory.AddSSLSocketDataProvider(
      &ssl_socket_data_provider1);
  session_deps.socket_factory.AddSSLSocketDataProvider(
      &ssl_socket_data_provider2);

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));
  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));
  TestCompletionCallback callback;

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback.WaitForResult());

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());

  std::string response_data;
  ASSERT_EQ(OK, ReadTransaction(trans.get(), &response_data));
  EXPECT_EQ("ok.", response_data);
}

// This tests the case that a request is issued via http instead of spdy after
// npn is negotiated.
TEST_F(HttpNetworkTransactionTest, NpnWithHttpOverSSL) {
  HttpStreamFactory::set_use_alternate_protocols(true);
  HttpStreamFactory::set_next_protos("\x08http/1.1\x07http1.1");
  SessionDependencies session_deps;
  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  MockWrite data_writes[] = {
    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads[] = {
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead(kAlternateProtocolHttpHeader),
    MockRead("hello world"),
    MockRead(false, OK),
  };

  SSLSocketDataProvider ssl(true, OK);
  ssl.next_proto_status = SSLClientSocket::kNextProtoNegotiated;
  ssl.next_proto = "http/1.1";

  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  StaticSocketDataProvider data(data_reads, arraysize(data_reads),
                                data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));
  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback, BoundNetLog());

  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback.WaitForResult());

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_TRUE(response != NULL);
  ASSERT_TRUE(response->headers != NULL);
  EXPECT_EQ("HTTP/1.1 200 OK", response->headers->GetStatusLine());

  std::string response_data;
  ASSERT_EQ(OK, ReadTransaction(trans.get(), &response_data));
  EXPECT_EQ("hello world", response_data);

  EXPECT_FALSE(response->was_fetched_via_spdy);
  EXPECT_TRUE(response->was_npn_negotiated);

  HttpStreamFactory::set_next_protos("");
  HttpStreamFactory::set_use_alternate_protocols(false);
}

TEST_F(HttpNetworkTransactionTest, SpdyPostNPNServerHangup) {
  // Simulate the SSL handshake completing with an NPN negotiation
  // followed by an immediate server closing of the socket.
  // Fix crash:  http://crbug.com/46369
  HttpStreamFactory::set_use_alternate_protocols(true);
  HttpStreamFactory::set_next_protos(kExpectedNPNString);
  SessionDependencies session_deps;

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  SSLSocketDataProvider ssl(true, OK);
  ssl.next_proto_status = SSLClientSocket::kNextProtoNegotiated;
  ssl.next_proto = "spdy/2";
  ssl.was_npn_negotiated = true;
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  scoped_ptr<spdy::SpdyFrame> req(ConstructSpdyGet(NULL, 0, false, 1, LOWEST));
  MockWrite spdy_writes[] = { CreateMockWrite(*req) };

  MockRead spdy_reads[] = {
    MockRead(false, 0, 0)   // Not async - return 0 immediately.
  };

  scoped_refptr<DelayedSocketData> spdy_data(
      new DelayedSocketData(
          0,  // don't wait in this case, immediate hangup.
          spdy_reads, arraysize(spdy_reads),
          spdy_writes, arraysize(spdy_writes)));
  session_deps.socket_factory.AddSocketDataProvider(spdy_data);

  TestCompletionCallback callback;

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));
  scoped_ptr<HttpNetworkTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(ERR_CONNECTION_CLOSED, callback.WaitForResult());

  HttpStreamFactory::set_next_protos("");
  HttpStreamFactory::set_use_alternate_protocols(false);
}

TEST_F(HttpNetworkTransactionTest, SpdyAlternateProtocolThroughProxy) {
  // This test ensures that the URL passed into the proxy is upgraded
  // to https when doing an Alternate Protocol upgrade.
  HttpStreamFactory::set_use_alternate_protocols(true);
  HttpStreamFactory::set_next_protos(
      "\x08http/1.1\x07http1.1\x06spdy/2\x04spdy");

  SessionDependencies session_deps(ProxyService::CreateFixed("myproxy:70"));
  HttpAuthHandlerMock::Factory* auth_factory =
      new HttpAuthHandlerMock::Factory();
  HttpAuthHandlerMock* auth_handler = new HttpAuthHandlerMock();
  auth_factory->set_mock_handler(auth_handler, HttpAuth::AUTH_PROXY);
  auth_factory->set_do_init_from_challenge(true);
  session_deps.http_auth_handler_factory.reset(auth_factory);

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com");
  request.load_flags = 0;

  // First round goes unauthenticated through the proxy.
  MockWrite data_writes_1[] = {
    MockWrite("GET http://www.google.com/ HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n"
              "\r\n"),
  };
  MockRead data_reads_1[] = {
    MockRead(false, ERR_TEST_PEER_CLOSE_AFTER_NEXT_MOCK_READ),
    MockRead("HTTP/1.1 200 OK\r\n"
             "Alternate-Protocol: 443:npn-spdy/2\r\n"
             "Proxy-Connection: close\r\n"
             "\r\n"),
  };
  StaticSocketDataProvider data_1(data_reads_1, arraysize(data_reads_1),
                                  data_writes_1, arraysize(data_writes_1));

  // Second round tries to tunnel to www.google.com due to the
  // Alternate-Protocol announcement in the first round. It fails due
  // to a proxy authentication challenge.
  // After the failure, a tunnel is established to www.google.com using
  // Proxy-Authorization headers. There is then a SPDY request round.
  //
  // NOTE: Despite the "Proxy-Connection: Close", these are done on the
  // same MockTCPClientSocket since the underlying HttpNetworkClientSocket
  // does a Disconnect and Connect on the same socket, rather than trying
  // to obtain a new one.
  //
  // NOTE: Originally, the proxy response to the second CONNECT request
  // simply returned another 407 so the unit test could skip the SSL connection
  // establishment and SPDY framing issues. Alas, the
  // retry-http-when-alternate-protocol fails logic kicks in, which was more
  // complicated to set up expectations for than the SPDY session.

  scoped_ptr<spdy::SpdyFrame> req(ConstructSpdyGet(NULL, 0, false, 1, LOWEST));
  scoped_ptr<spdy::SpdyFrame> resp(ConstructSpdyGetSynReply(NULL, 0, 1));
  scoped_ptr<spdy::SpdyFrame> data(ConstructSpdyBodyFrame(1, true));

  MockWrite data_writes_2[] = {
    // First connection attempt without Proxy-Authorization.
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n"
              "\r\n"),

    // Second connection attempt with Proxy-Authorization.
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n"
              "Proxy-Authorization: auth_token\r\n"
              "\r\n"),

    // SPDY request
    CreateMockWrite(*req),
  };
  const char kRejectConnectResponse[] = ("HTTP/1.1 407 Unauthorized\r\n"
                                         "Proxy-Authenticate: Mock\r\n"
                                         "Proxy-Connection: close\r\n"
                                         "\r\n");
  const char kAcceptConnectResponse[] = "HTTP/1.1 200 Connected\r\n\r\n";
  MockRead data_reads_2[] = {
    // First connection attempt fails
    MockRead(false, ERR_TEST_PEER_CLOSE_AFTER_NEXT_MOCK_READ, 1),
    MockRead(true, kRejectConnectResponse,
             arraysize(kRejectConnectResponse) - 1, 1),

    // Second connection attempt passes
    MockRead(true, kAcceptConnectResponse,
             arraysize(kAcceptConnectResponse) -1, 4),

    // SPDY response
    CreateMockRead(*resp.get(), 6),
    CreateMockRead(*data.get(), 6),
    MockRead(true, 0, 0, 6),
  };
  scoped_refptr<OrderedSocketData> data_2(
      new OrderedSocketData(data_reads_2, arraysize(data_reads_2),
                            data_writes_2, arraysize(data_writes_2)));

  SSLSocketDataProvider ssl(true, OK);
  ssl.next_proto_status = SSLClientSocket::kNextProtoNegotiated;
  ssl.next_proto = "spdy/2";
  ssl.was_npn_negotiated = true;

  MockConnect never_finishing_connect(false, ERR_IO_PENDING);
  StaticSocketDataProvider hanging_non_alternate_protocol_socket(
      NULL, 0, NULL, 0);
  hanging_non_alternate_protocol_socket.set_connect_data(
      never_finishing_connect);

  session_deps.socket_factory.AddSocketDataProvider(&data_1);
  session_deps.socket_factory.AddSocketDataProvider(data_2.get());
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);
  session_deps.socket_factory.AddSocketDataProvider(
      &hanging_non_alternate_protocol_socket);
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  // First round should work and provide the Alternate-Protocol state.
  TestCompletionCallback callback_1;
  scoped_ptr<HttpTransaction> trans_1(new HttpNetworkTransaction(session));
  int rv = trans_1->Start(&request, &callback_1, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback_1.WaitForResult());

  // Second round should attempt a tunnel connect and get an auth challenge.
  TestCompletionCallback callback_2;
  scoped_ptr<HttpTransaction> trans_2(new HttpNetworkTransaction(session));
  rv = trans_2->Start(&request, &callback_2, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback_2.WaitForResult());
  const HttpResponseInfo* response = trans_2->GetResponseInfo();
  ASSERT_FALSE(response == NULL);
  ASSERT_FALSE(response->auth_challenge.get() == NULL);

  // Restart with auth. Tunnel should work and response received.
  TestCompletionCallback callback_3;
  rv = trans_2->RestartWithAuth(kFoo, kBar, &callback_3);
  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback_3.WaitForResult());

  // After all that work, these two lines (or actually, just the scheme) are
  // what this test is all about. Make sure it happens correctly.
  const GURL& request_url = auth_handler->request_url();
  EXPECT_EQ("https", request_url.scheme());
  EXPECT_EQ("www.google.com", request_url.host());

  HttpStreamFactory::set_next_protos("");
  HttpStreamFactory::set_use_alternate_protocols(false);
}

// Test that if we cancel the transaction as the connection is completing, that
// everything tears down correctly.
TEST_F(HttpNetworkTransactionTest, SimpleCancel) {
  // Setup everything about the connection to complete synchronously, so that
  // after calling HttpNetworkTransaction::Start, the only thing we're waiting
  // for is the callback from the HttpStreamRequest.
  // Then cancel the transaction.
  // Verify that we don't crash.
  MockConnect mock_connect(false, OK);
  MockRead data_reads[] = {
    MockRead(false, "HTTP/1.0 200 OK\r\n\r\n"),
    MockRead(false, "hello world"),
    MockRead(false, OK),
  };

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");
  request.load_flags = 0;

  SessionDependencies session_deps;
  session_deps.host_resolver->set_synchronous_mode(true);
  scoped_ptr<HttpTransaction> trans(
      new HttpNetworkTransaction(CreateSession(&session_deps)));

  StaticSocketDataProvider data(data_reads, arraysize(data_reads), NULL, 0);
  data.set_connect_data(mock_connect);
  session_deps.socket_factory.AddSocketDataProvider(&data);

  TestCompletionCallback callback;

  CapturingBoundNetLog log(CapturingNetLog::kUnbounded);
  int rv = trans->Start(&request, &callback, log.bound());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  trans.reset();  // Cancel the transaction here.

  MessageLoop::current()->RunAllPending();
}

// Test a basic GET request through a proxy.
TEST_F(HttpNetworkTransactionTest, ProxyGet) {
  SessionDependencies session_deps(ProxyService::CreateFixed("myproxy:70"));
  CapturingBoundNetLog log(CapturingNetLog::kUnbounded);
  session_deps.net_log = log.bound().net_log();
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("http://www.google.com/");

  MockWrite data_writes1[] = {
    MockWrite("GET http://www.google.com/ HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads1[] = {
    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  session_deps.socket_factory.AddSocketDataProvider(&data1);

  TestCompletionCallback callback1;

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback1, log.bound());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);

  EXPECT_TRUE(response->headers->IsKeepAlive());
  EXPECT_EQ(200, response->headers->response_code());
  EXPECT_EQ(100, response->headers->GetContentLength());
  EXPECT_TRUE(response->was_fetched_via_proxy);
  EXPECT_TRUE(HttpVersion(1, 1) == response->headers->GetHttpVersion());
}

// Test a basic HTTPS GET request through a proxy.
TEST_F(HttpNetworkTransactionTest, ProxyTunnelGet) {
  SessionDependencies session_deps(ProxyService::CreateFixed("myproxy:70"));
  CapturingBoundNetLog log(CapturingNetLog::kUnbounded);
  session_deps.net_log = log.bound().net_log();
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");

  // Since we have proxy, should try to establish tunnel.
  MockWrite data_writes1[] = {
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),

    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads1[] = {
    MockRead("HTTP/1.1 200 Connection Established\r\n\r\n"),

    MockRead("HTTP/1.1 200 OK\r\n"),
    MockRead("Content-Type: text/html; charset=iso-8859-1\r\n"),
    MockRead("Content-Length: 100\r\n\r\n"),
    MockRead(false, OK),
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  session_deps.socket_factory.AddSocketDataProvider(&data1);
  SSLSocketDataProvider ssl(true, OK);
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  TestCompletionCallback callback1;

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback1, log.bound());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(OK, rv);
  net::CapturingNetLog::EntryList entries;
  log.GetEntries(&entries);
  size_t pos = ExpectLogContainsSomewhere(
      entries, 0, NetLog::TYPE_HTTP_TRANSACTION_SEND_TUNNEL_HEADERS,
      NetLog::PHASE_NONE);
  ExpectLogContainsSomewhere(
      entries, pos,
      NetLog::TYPE_HTTP_TRANSACTION_READ_TUNNEL_RESPONSE_HEADERS,
      NetLog::PHASE_NONE);

  const HttpResponseInfo* response = trans->GetResponseInfo();
  ASSERT_FALSE(response == NULL);

  EXPECT_TRUE(response->headers->IsKeepAlive());
  EXPECT_EQ(200, response->headers->response_code());
  EXPECT_EQ(100, response->headers->GetContentLength());
  EXPECT_TRUE(HttpVersion(1, 1) == response->headers->GetHttpVersion());
  EXPECT_TRUE(response->was_fetched_via_proxy);
}

// Test a basic HTTPS GET request through a proxy, but the server hangs up
// while establishing the tunnel.
TEST_F(HttpNetworkTransactionTest, ProxyTunnelGetHangup) {
  SessionDependencies session_deps(ProxyService::CreateFixed("myproxy:70"));
  CapturingBoundNetLog log(CapturingNetLog::kUnbounded);
  session_deps.net_log = log.bound().net_log();
  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");

  // Since we have proxy, should try to establish tunnel.
  MockWrite data_writes1[] = {
    MockWrite("CONNECT www.google.com:443 HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Proxy-Connection: keep-alive\r\n\r\n"),

    MockWrite("GET / HTTP/1.1\r\n"
              "Host: www.google.com\r\n"
              "Connection: keep-alive\r\n\r\n"),
  };

  MockRead data_reads1[] = {
    MockRead(false, ERR_TEST_PEER_CLOSE_AFTER_NEXT_MOCK_READ),
    MockRead("HTTP/1.1 200 Connection Established\r\n\r\n"),
    MockRead(true, 0, 0),  // EOF
  };

  StaticSocketDataProvider data1(data_reads1, arraysize(data_reads1),
                                 data_writes1, arraysize(data_writes1));
  session_deps.socket_factory.AddSocketDataProvider(&data1);
  SSLSocketDataProvider ssl(true, OK);
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  TestCompletionCallback callback1;

  scoped_ptr<HttpTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback1, log.bound());
  EXPECT_EQ(ERR_IO_PENDING, rv);

  rv = callback1.WaitForResult();
  EXPECT_EQ(ERR_EMPTY_RESPONSE, rv);
  net::CapturingNetLog::EntryList entries;
  log.GetEntries(&entries);
  size_t pos = ExpectLogContainsSomewhere(
      entries, 0, NetLog::TYPE_HTTP_TRANSACTION_SEND_TUNNEL_HEADERS,
      NetLog::PHASE_NONE);
  ExpectLogContainsSomewhere(
      entries, pos,
      NetLog::TYPE_HTTP_TRANSACTION_READ_TUNNEL_RESPONSE_HEADERS,
      NetLog::PHASE_NONE);
}

// Test for crbug.com/55424.
TEST_F(HttpNetworkTransactionTest, PreconnectWithExistingSpdySession) {
  SessionDependencies session_deps;

  scoped_ptr<spdy::SpdyFrame> req(ConstructSpdyGet(
      "https://www.google.com", false, 1, LOWEST));
  MockWrite spdy_writes[] = { CreateMockWrite(*req) };

  scoped_ptr<spdy::SpdyFrame> resp(ConstructSpdyGetSynReply(NULL, 0, 1));
  scoped_ptr<spdy::SpdyFrame> data(ConstructSpdyBodyFrame(1, true));
  MockRead spdy_reads[] = {
    CreateMockRead(*resp),
    CreateMockRead(*data),
    MockRead(true, 0, 0),
  };

  scoped_refptr<DelayedSocketData> spdy_data(
      new DelayedSocketData(
          1,  // wait for one write to finish before reading.
          spdy_reads, arraysize(spdy_reads),
          spdy_writes, arraysize(spdy_writes)));
  session_deps.socket_factory.AddSocketDataProvider(spdy_data);

  SSLSocketDataProvider ssl(true, OK);
  ssl.next_proto_status = SSLClientSocket::kNextProtoNegotiated;
  ssl.next_proto = "spdy/2";
  ssl.was_npn_negotiated = true;
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl);

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));

  // Set up an initial SpdySession in the pool to reuse.
  HostPortPair host_port_pair("www.google.com", 443);
  HostPortProxyPair pair(host_port_pair, ProxyServer::Direct());
  scoped_refptr<SpdySession> spdy_session =
      session->spdy_session_pool()->Get(pair, BoundNetLog());
  scoped_refptr<TransportSocketParams> transport_params(
      new TransportSocketParams(host_port_pair, MEDIUM, GURL(), false, false));
  TestCompletionCallback callback;

  scoped_ptr<ClientSocketHandle> connection(new ClientSocketHandle);
  EXPECT_EQ(ERR_IO_PENDING,
            connection->Init(host_port_pair.ToString(), transport_params,
                             LOWEST, &callback,
                             session->transport_socket_pool(), BoundNetLog()));
  EXPECT_EQ(OK, callback.WaitForResult());
  spdy_session->InitializeWithSocket(connection.release(), false, OK);

  HttpRequestInfo request;
  request.method = "GET";
  request.url = GURL("https://www.google.com/");
  request.load_flags = 0;

  // This is the important line that marks this as a preconnect.
  request.motivation = HttpRequestInfo::PRECONNECT_MOTIVATED;

  scoped_ptr<HttpNetworkTransaction> trans(new HttpNetworkTransaction(session));

  int rv = trans->Start(&request, &callback, BoundNetLog());
  EXPECT_EQ(ERR_IO_PENDING, rv);
  EXPECT_EQ(OK, callback.WaitForResult());
}

// Given a net error, cause that error to be returned from the first Write()
// call and verify that the HttpTransaction fails with that error.
static void CheckErrorIsPassedBack(int error, bool async) {
  net::HttpRequestInfo request_info;
  request_info.url = GURL("https://www.example.com/");
  request_info.method = "GET";
  request_info.load_flags = net::LOAD_NORMAL;

  SessionDependencies session_deps;

  SSLSocketDataProvider ssl_data(async, OK);
  net::MockWrite data_writes[] = {
    net::MockWrite(async, error),
  };
  net::StaticSocketDataProvider data(NULL, 0,
                                     data_writes, arraysize(data_writes));
  session_deps.socket_factory.AddSocketDataProvider(&data);
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl_data);

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));
  scoped_ptr<HttpNetworkTransaction> trans(new HttpNetworkTransaction(session));

  TestCompletionCallback callback;
  int rv = trans->Start(&request_info, &callback, net::BoundNetLog());
  if (rv == net::ERR_IO_PENDING)
    rv = callback.WaitForResult();
  ASSERT_EQ(error, rv);
}

TEST_F(HttpNetworkTransactionTest, SSLWriteCertError) {
  // Just check a grab bag of cert errors.
  static const int kErrors[] = {
    ERR_CERT_COMMON_NAME_INVALID,
    ERR_CERT_AUTHORITY_INVALID,
    ERR_CERT_DATE_INVALID,
  };
  for (size_t i = 0; i < arraysize(kErrors); i++) {
    CheckErrorIsPassedBack(kErrors[i], false /* not async */);
    CheckErrorIsPassedBack(kErrors[i], true /* async */);
  }
}

// Ensure that a client certificate is removed from the SSL client auth
// cache when:
//  1) No proxy is involved.
//  2) TLS False Start is disabled.
//  3) The initial TLS handshake requests a client certificate.
//  4) The client supplies an invalid/unacceptable certificate.
TEST_F(HttpNetworkTransactionTest, ClientAuthCertCache_Direct_NoFalseStart) {
  net::HttpRequestInfo request_info;
  request_info.url = GURL("https://www.example.com/");
  request_info.method = "GET";
  request_info.load_flags = net::LOAD_NORMAL;

  SessionDependencies session_deps;

  scoped_refptr<SSLCertRequestInfo> cert_request(new SSLCertRequestInfo());
  cert_request->host_and_port = "www.example.com:443";

  // [ssl_]data1 contains the data for the first SSL handshake. When a
  // CertificateRequest is received for the first time, the handshake will
  // be aborted to allow the caller to provide a certificate.
  SSLSocketDataProvider ssl_data1(true /* async */,
                                  net::ERR_SSL_CLIENT_AUTH_CERT_NEEDED);
  ssl_data1.cert_request_info = cert_request.get();
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl_data1);
  net::StaticSocketDataProvider data1(NULL, 0, NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data1);

  // [ssl_]data2 contains the data for the second SSL handshake. When TLS
  // False Start is not being used, the result of the SSL handshake will be
  // returned as part of the SSLClientSocket::Connect() call. This test
  // matches the result of a server sending a handshake_failure alert,
  // rather than a Finished message, because it requires a client
  // certificate and none was supplied.
  SSLSocketDataProvider ssl_data2(true /* async */,
                                  net::ERR_SSL_PROTOCOL_ERROR);
  ssl_data2.cert_request_info = cert_request.get();
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl_data2);
  net::StaticSocketDataProvider data2(NULL, 0, NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data2);

  // [ssl_]data3 contains the data for the third SSL handshake. When a
  // connection to a server fails during an SSL handshake,
  // HttpNetworkTransaction will attempt to fallback to SSLv3 if the initial
  // connection was attempted with TLSv1. This is transparent to the caller
  // of the HttpNetworkTransaction. Because this test failure is due to
  // requiring a client certificate, this fallback handshake should also
  // fail.
  SSLSocketDataProvider ssl_data3(true /* async */,
                                  net::ERR_SSL_PROTOCOL_ERROR);
  ssl_data3.cert_request_info = cert_request.get();
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl_data3);
  net::StaticSocketDataProvider data3(NULL, 0, NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data3);

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));
  scoped_ptr<HttpNetworkTransaction> trans(new HttpNetworkTransaction(session));

  // Begin the SSL handshake with the peer. This consumes ssl_data1.
  TestCompletionCallback callback;
  int rv = trans->Start(&request_info, &callback, net::BoundNetLog());
  ASSERT_EQ(net::ERR_IO_PENDING, rv);

  // Complete the SSL handshake, which should abort due to requiring a
  // client certificate.
  rv = callback.WaitForResult();
  ASSERT_EQ(net::ERR_SSL_CLIENT_AUTH_CERT_NEEDED, rv);

  // Indicate that no certificate should be supplied. From the perspective
  // of SSLClientCertCache, NULL is just as meaningful as a real
  // certificate, so this is the same as supply a
  // legitimate-but-unacceptable certificate.
  rv = trans->RestartWithCertificate(NULL, &callback);
  ASSERT_EQ(net::ERR_IO_PENDING, rv);

  // Ensure the certificate was added to the client auth cache before
  // allowing the connection to continue restarting.
  scoped_refptr<X509Certificate> client_cert;
  ASSERT_TRUE(session->ssl_client_auth_cache()->Lookup("www.example.com:443",
                                                       &client_cert));
  ASSERT_EQ(NULL, client_cert.get());

  // Restart the handshake. This will consume ssl_data2, which fails, and
  // then consume ssl_data3, which should also fail. The result code is
  // checked against what ssl_data3 should return.
  rv = callback.WaitForResult();
  ASSERT_EQ(net::ERR_SSL_PROTOCOL_ERROR, rv);

  // Ensure that the client certificate is removed from the cache on a
  // handshake failure.
  ASSERT_FALSE(session->ssl_client_auth_cache()->Lookup("www.example.com:443",
                                                        &client_cert));
}

// Ensure that a client certificate is removed from the SSL client auth
// cache when:
//  1) No proxy is involved.
//  2) TLS False Start is enabled.
//  3) The initial TLS handshake requests a client certificate.
//  4) The client supplies an invalid/unacceptable certificate.
TEST_F(HttpNetworkTransactionTest, ClientAuthCertCache_Direct_FalseStart) {
  net::HttpRequestInfo request_info;
  request_info.url = GURL("https://www.example.com/");
  request_info.method = "GET";
  request_info.load_flags = net::LOAD_NORMAL;

  SessionDependencies session_deps;

  scoped_refptr<SSLCertRequestInfo> cert_request(new SSLCertRequestInfo());
  cert_request->host_and_port = "www.example.com:443";

  // When TLS False Start is used, SSLClientSocket::Connect() calls will
  // return successfully after reading up to the peer's Certificate message.
  // This is to allow the caller to call SSLClientSocket::Write(), which can
  // enqueue application data to be sent in the same packet as the
  // ChangeCipherSpec and Finished messages.
  // The actual handshake will be finished when SSLClientSocket::Read() is
  // called, which expects to process the peer's ChangeCipherSpec and
  // Finished messages. If there was an error negotiating with the peer,
  // such as due to the peer requiring a client certificate when none was
  // supplied, the alert sent by the peer won't be processed until Read() is
  // called.

  // Like the non-False Start case, when a client certificate is requested by
  // the peer, the handshake is aborted during the Connect() call.
  // [ssl_]data1 represents the initial SSL handshake with the peer.
  SSLSocketDataProvider ssl_data1(true /* async */,
                                  net::ERR_SSL_CLIENT_AUTH_CERT_NEEDED);
  ssl_data1.cert_request_info = cert_request.get();
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl_data1);
  net::StaticSocketDataProvider data1(NULL, 0, NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data1);

  // When a client certificate is supplied, Connect() will not be aborted
  // when the peer requests the certificate. Instead, the handshake will
  // artificially succeed, allowing the caller to write the HTTP request to
  // the socket. The handshake messages are not processed until Read() is
  // called, which then detects that the handshake was aborted, due to the
  // peer sending a handshake_failure because it requires a client
  // certificate.
  SSLSocketDataProvider ssl_data2(true /* async */, net::OK);
  ssl_data2.cert_request_info = cert_request.get();
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl_data2);
  net::MockRead data2_reads[] = {
    net::MockRead(true /* async */, net::ERR_SSL_PROTOCOL_ERROR),
  };
  net::StaticSocketDataProvider data2(
      data2_reads, arraysize(data2_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data2);

  // As described in ClientAuthCertCache_Direct_NoFalseStart, [ssl_]data3 is
  // the data for the SSL handshake once the TLSv1 connection falls back to
  // SSLv3. It has the same behaviour as [ssl_]data2.
  SSLSocketDataProvider ssl_data3(true /* async */, net::OK);
  ssl_data3.cert_request_info = cert_request.get();
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl_data3);
  net::StaticSocketDataProvider data3(
      data2_reads, arraysize(data2_reads), NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data3);

  scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));
  scoped_ptr<HttpNetworkTransaction> trans(new HttpNetworkTransaction(session));

  // Begin the initial SSL handshake.
  TestCompletionCallback callback;
  int rv = trans->Start(&request_info, &callback, net::BoundNetLog());
  ASSERT_EQ(net::ERR_IO_PENDING, rv);

  // Complete the SSL handshake, which should abort due to requiring a
  // client certificate.
  rv = callback.WaitForResult();
  ASSERT_EQ(net::ERR_SSL_CLIENT_AUTH_CERT_NEEDED, rv);

  // Indicate that no certificate should be supplied. From the perspective
  // of SSLClientCertCache, NULL is just as meaningful as a real
  // certificate, so this is the same as supply a
  // legitimate-but-unacceptable certificate.
  rv = trans->RestartWithCertificate(NULL, &callback);
  ASSERT_EQ(net::ERR_IO_PENDING, rv);

  // Ensure the certificate was added to the client auth cache before
  // allowing the connection to continue restarting.
  scoped_refptr<X509Certificate> client_cert;
  ASSERT_TRUE(session->ssl_client_auth_cache()->Lookup("www.example.com:443",
                                                       &client_cert));
  ASSERT_EQ(NULL, client_cert.get());


  // Restart the handshake. This will consume ssl_data2, which fails, and
  // then consume ssl_data3, which should also fail. The result code is
  // checked against what ssl_data3 should return.
  rv = callback.WaitForResult();
  ASSERT_EQ(net::ERR_SSL_PROTOCOL_ERROR, rv);

  // Ensure that the client certificate is removed from the cache on a
  // handshake failure.
  ASSERT_FALSE(session->ssl_client_auth_cache()->Lookup("www.example.com:443",
                                                        &client_cert));
}

// Ensure that a client certificate is removed from the SSL client auth
// cache when:
//  1) An HTTPS proxy is involved.
//  3) The HTTPS proxy requests a client certificate.
//  4) The client supplies an invalid/unacceptable certificate for the
//     proxy.
// The test is repeated twice, first for connecting to an HTTPS endpoint,
// then for connecting to an HTTP endpoint.
TEST_F(HttpNetworkTransactionTest, ClientAuthCertCache_Proxy_Fail) {
  SessionDependencies session_deps(
      ProxyService::CreateFixed("https://proxy:70"));
  CapturingBoundNetLog log(CapturingNetLog::kUnbounded);
  session_deps.net_log = log.bound().net_log();

  scoped_refptr<SSLCertRequestInfo> cert_request(new SSLCertRequestInfo());
  cert_request->host_and_port = "proxy:70";

  // See ClientAuthCertCache_Direct_NoFalseStart for the explanation of
  // [ssl_]data[1-3]. Rather than represending the endpoint
  // (www.example.com:443), they represent failures with the HTTPS proxy
  // (proxy:70).
  SSLSocketDataProvider ssl_data1(true /* async */,
                                  net::ERR_SSL_CLIENT_AUTH_CERT_NEEDED);
  ssl_data1.cert_request_info = cert_request.get();
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl_data1);
  net::StaticSocketDataProvider data1(NULL, 0, NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data1);

  SSLSocketDataProvider ssl_data2(true /* async */,
                                  net::ERR_SSL_PROTOCOL_ERROR);
  ssl_data2.cert_request_info = cert_request.get();
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl_data2);
  net::StaticSocketDataProvider data2(NULL, 0, NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data2);

  SSLSocketDataProvider ssl_data3(true /* async */,
                                  net::ERR_SSL_PROTOCOL_ERROR);
  ssl_data3.cert_request_info = cert_request.get();
  session_deps.socket_factory.AddSSLSocketDataProvider(&ssl_data3);
  net::StaticSocketDataProvider data3(NULL, 0, NULL, 0);
  session_deps.socket_factory.AddSocketDataProvider(&data3);

  net::HttpRequestInfo requests[2];
  requests[0].url = GURL("https://www.example.com/");
  requests[0].method = "GET";
  requests[0].load_flags = net::LOAD_NORMAL;

  requests[1].url = GURL("http://www.example.com/");
  requests[1].method = "GET";
  requests[1].load_flags = net::LOAD_NORMAL;

  for (size_t i = 0; i < arraysize(requests); ++i) {
    session_deps.socket_factory.ResetNextMockIndexes();
    scoped_refptr<HttpNetworkSession> session(CreateSession(&session_deps));
    scoped_ptr<HttpNetworkTransaction> trans(
        new HttpNetworkTransaction(session));

    // Begin the SSL handshake with the proxy.
    TestCompletionCallback callback;
    int rv = trans->Start(&requests[i], &callback, net::BoundNetLog());
    ASSERT_EQ(net::ERR_IO_PENDING, rv);

    // Complete the SSL handshake, which should abort due to requiring a
    // client certificate.
    rv = callback.WaitForResult();
    ASSERT_EQ(net::ERR_SSL_CLIENT_AUTH_CERT_NEEDED, rv);

    // Indicate that no certificate should be supplied. From the perspective
    // of SSLClientCertCache, NULL is just as meaningful as a real
    // certificate, so this is the same as supply a
    // legitimate-but-unacceptable certificate.
    rv = trans->RestartWithCertificate(NULL, &callback);
    ASSERT_EQ(net::ERR_IO_PENDING, rv);

    // Ensure the certificate was added to the client auth cache before
    // allowing the connection to continue restarting.
    scoped_refptr<X509Certificate> client_cert;
    ASSERT_TRUE(session->ssl_client_auth_cache()->Lookup("proxy:70",
                                                         &client_cert));
    ASSERT_EQ(NULL, client_cert.get());
    // Ensure the certificate was NOT cached for the endpoint. This only
    // applies to HTTPS requests, but is fine to check for HTTP requests.
    ASSERT_FALSE(session->ssl_client_auth_cache()->Lookup("www.example.com:443",
                                                          &client_cert));

    // Restart the handshake. This will consume ssl_data2, which fails, and
    // then consume ssl_data3, which should also fail. The result code is
    // checked against what ssl_data3 should return.
    rv = callback.WaitForResult();
    ASSERT_EQ(net::ERR_PROXY_CONNECTION_FAILED, rv);

    // Now that the new handshake has failed, ensure that the client
    // certificate was removed from the client auth cache.
    ASSERT_FALSE(session->ssl_client_auth_cache()->Lookup("proxy:70",
                                                          &client_cert));
    ASSERT_FALSE(session->ssl_client_auth_cache()->Lookup("www.example.com:443",
                                                          &client_cert));
  }
}

}  // namespace net