Basic HTTP pipelining support

net/http/http_pipelined_connection_impl_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_pipelined_connection_impl.h"
+
+#include <string>
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_vector.h"
+#include "net/base/io_buffer.h"
+#include "net/base/net_errors.h"
+#include "net/base/request_priority.h"
+#include "net/http/http_pipelined_stream.h"
+#include "net/socket/client_socket_handle.h"
+#include "net/socket/client_socket_pool_histograms.h"
+#include "net/socket/socket_test_util.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using testing::NiceMock;
+using testing::Ref;
+using testing::StrEq;
+
+namespace net {
+
+class DummySocketParams : public base::RefCounted<DummySocketParams> {
+ private:
+  friend class base::RefCounted<DummySocketParams>;
+};
+
+REGISTER_SOCKET_PARAMS_FOR_POOL(MockTransportClientSocketPool,
+                                DummySocketParams);
+
+class MockPipelineDelegate : public HttpPipelinedConnectionImpl::Delegate {
+ public:
+  MOCK_METHOD1(OnPipelineHasCapacity, void(HttpPipelinedConnection* pipeline));
+};
+
+class SuddenCloseObserver : public MessageLoop::TaskObserver {
+ public:
+  SuddenCloseObserver(HttpStream* stream, int close_before_task)
+      : stream_(stream),
+        close_before_task_(close_before_task),
+        current_task_(0) { }
+
+  virtual void WillProcessTask(base::TimeTicks) OVERRIDE {
+    ++current_task_;
+    if (current_task_ == close_before_task_) {
+      stream_->Close(false);
+      MessageLoop::current()->RemoveTaskObserver(this);
+    }
+  }
+
+  virtual void DidProcessTask(base::TimeTicks) OVERRIDE { }
+
+ private:
+  HttpStream* stream_;
+  int close_before_task_;
+  int current_task_;
+};
+
+class HttpPipelinedConnectionImplTest : public testing::Test {
+ public:
+  HttpPipelinedConnectionImplTest()
+      : histograms_("a"),
+        pool_(1, 1, &histograms_, &factory_) {
+  }
+
+  void TearDown() {
+    MessageLoop::current()->RunAllPending();
+  }
+
+  void Initialize(MockRead* reads, size_t reads_count,
+                  MockWrite* writes, size_t writes_count) {
+    data_ = new DeterministicSocketData(reads, reads_count,
+                                        writes, writes_count);
+    data_->set_connect_data(MockConnect(false, 0));
+    if (reads_count || writes_count) {
+      data_->StopAfter(reads_count + writes_count);
+    }
+    factory_.AddSocketDataProvider(data_.get());
+    scoped_refptr<DummySocketParams> params;
+    ClientSocketHandle* connection = new ClientSocketHandle;
+    connection->Init("a", params, MEDIUM, NULL, &pool_, BoundNetLog());
+    pipeline_.reset(new HttpPipelinedConnectionImpl(connection, &delegate_,
+                                                    ssl_config_, proxy_info_,
+                                                    BoundNetLog(), false));
+  }
+
+  HttpRequestInfo* GetRequestInfo(const std::string& filename) {
+    HttpRequestInfo* request_info = new HttpRequestInfo;
+    request_info->url = GURL("http://localhost/" + filename);
+    request_info->method = "GET";
+    request_info_vector_.push_back(request_info);
+    return request_info;
+  }
+
+  HttpStream* NewTestStream(const std::string& filename) {
+    HttpStream* stream = pipeline_->CreateNewStream();
+    HttpRequestInfo* request_info = GetRequestInfo(filename);
+    int rv = stream->InitializeStream(request_info, BoundNetLog(), NULL);
+    DCHECK_EQ(OK, rv);
+    return stream;
+  }
+
+  void ExpectResponse(const std::string& expected,
+                      scoped_ptr<HttpStream>& stream, bool async) {
+    scoped_refptr<IOBuffer> buffer(new IOBuffer(expected.size()));
+
+    if (async) {
+      EXPECT_EQ(ERR_IO_PENDING,
+                stream->ReadResponseBody(buffer.get(), expected.size(),
+                                         &callback_));
+      data_->RunFor(1);
+      EXPECT_EQ(static_cast<int>(expected.size()), callback_.WaitForResult());
+    } else {
+      EXPECT_EQ(static_cast<int>(expected.size()),
+                stream->ReadResponseBody(buffer.get(), expected.size(),
+                                         &callback_));
+    }
+    std::string actual(buffer->data(), expected.size());
+    EXPECT_THAT(actual, StrEq(expected));
+  }
+
+  void TestSyncRequest(scoped_ptr<HttpStream>& stream,
+                       const std::string& filename) {
+    HttpRequestHeaders headers;
+    HttpResponseInfo response;
+    EXPECT_EQ(OK, stream->SendRequest(headers, NULL, &response, &callback_));
+    EXPECT_EQ(OK, stream->ReadResponseHeaders(&callback_));
+    ExpectResponse(filename, stream, false);
+
+    stream->Close(false);
+  }
+
+  DeterministicMockClientSocketFactory factory_;
+  ClientSocketPoolHistograms histograms_;
+  MockTransportClientSocketPool pool_;
+  scoped_refptr<DeterministicSocketData> data_;
+
+  SSLConfig ssl_config_;
+  ProxyInfo proxy_info_;
+  NiceMock<MockPipelineDelegate> delegate_;
+  TestCompletionCallback callback_;
+  scoped_ptr<HttpPipelinedConnectionImpl> pipeline_;
+  ScopedVector<HttpRequestInfo> request_info_vector_;
+};
+
+TEST_F(HttpPipelinedConnectionImplTest, PipelineNotUsed) {
+  Initialize(NULL, 0, NULL, 0);
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, StreamNotUsed) {
+  Initialize(NULL, 0, NULL, 0);
+
+  scoped_ptr<HttpStream> stream(pipeline_->CreateNewStream());
+
+  stream->Close(false);
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, StreamBoundButNotUsed) {
+  Initialize(NULL, 0, NULL, 0);
+
+  scoped_ptr<HttpStream> stream(NewTestStream("ok.html"));
+
+  stream->Close(false);
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, SyncSingleRequest) {
+  MockWrite writes[] = {
+    MockWrite(false, 0, "GET /ok.html HTTP/1.1\r\n\r\n"),
+  };
+  MockRead reads[] = {
+    MockRead(false, 1, "HTTP/1.1 200 OK\r\n"),
+    MockRead(false, 2, "Content-Length: 7\r\n\r\n"),
+    MockRead(false, 3, "ok.html"),
+  };
+  Initialize(reads, arraysize(reads), writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> stream(NewTestStream("ok.html"));
+  TestSyncRequest(stream, "ok.html");
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, AsyncSingleRequest) {
+  MockWrite writes[] = {
+    MockWrite(true, 0, "GET /ok.html HTTP/1.1\r\n\r\n"),
+  };
+  MockRead reads[] = {
+    MockRead(true, 1, "HTTP/1.1 200 OK\r\n"),
+    MockRead(true, 2, "Content-Length: 7\r\n\r\n"),
+    MockRead(true, 3, "ok.html"),
+  };
+  Initialize(reads, arraysize(reads), writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> stream(NewTestStream("ok.html"));
+
+  HttpRequestHeaders headers;
+  HttpResponseInfo response;
+  EXPECT_EQ(ERR_IO_PENDING,
+            stream->SendRequest(headers, NULL, &response, &callback_));
+  data_->RunFor(1);
+  EXPECT_LE(OK, callback_.WaitForResult());
+
+  EXPECT_EQ(ERR_IO_PENDING, stream->ReadResponseHeaders(&callback_));
+  data_->RunFor(2);
+  EXPECT_LE(OK, callback_.WaitForResult());
+
+  ExpectResponse("ok.html", stream, true);
+
+  stream->Close(false);
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, LockStepAsyncRequests) {
+  MockWrite writes[] = {
+    MockWrite(true, 0, "GET /ok.html HTTP/1.1\r\n\r\n"),
+    MockWrite(true, 1, "GET /ko.html HTTP/1.1\r\n\r\n"),
+  };
+  MockRead reads[] = {
+    MockRead(true, 2, "HTTP/1.1 200 OK\r\n"),
+    MockRead(true, 3, "Content-Length: 7\r\n\r\n"),
+    MockRead(true, 4, "ok.html"),
+    MockRead(true, 5, "HTTP/1.1 200 OK\r\n"),
+    MockRead(true, 6, "Content-Length: 7\r\n\r\n"),
+    MockRead(true, 7, "ko.html"),
+  };
+  Initialize(reads, arraysize(reads), writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> stream1(NewTestStream("ok.html"));
+  scoped_ptr<HttpStream> stream2(NewTestStream("ko.html"));
+
+  HttpRequestHeaders headers1;
+  HttpResponseInfo response1;
+  EXPECT_EQ(ERR_IO_PENDING,
+            stream1->SendRequest(headers1, NULL, &response1, &callback_));
+
+  HttpRequestHeaders headers2;
+  HttpResponseInfo response2;
+  EXPECT_EQ(ERR_IO_PENDING,
+            stream2->SendRequest(headers2, NULL, &response2, &callback_));
+
+  data_->RunFor(1);
+  EXPECT_LE(OK, callback_.WaitForResult());
+  data_->RunFor(1);
+  EXPECT_LE(OK, callback_.WaitForResult());
+
+  EXPECT_EQ(ERR_IO_PENDING, stream1->ReadResponseHeaders(&callback_));
+  EXPECT_EQ(ERR_IO_PENDING, stream2->ReadResponseHeaders(&callback_));
+
+  data_->RunFor(2);
+  EXPECT_LE(OK, callback_.WaitForResult());
+
+  ExpectResponse("ok.html", stream1, true);
+
+  stream1->Close(false);
+
+  data_->RunFor(2);
+  EXPECT_LE(OK, callback_.WaitForResult());
+
+  ExpectResponse("ko.html", stream2, true);
+
+  stream2->Close(false);
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, TwoResponsesInOnePacket) {
+  MockWrite writes[] = {
+    MockWrite(false, 0, "GET /ok.html HTTP/1.1\r\n\r\n"),
+    MockWrite(false, 1, "GET /ko.html HTTP/1.1\r\n\r\n"),
+  };
+  MockRead reads[] = {
+    MockRead(false, 2,
+             "HTTP/1.1 200 OK\r\n"
+             "Content-Length: 7\r\n\r\n"
+             "ok.html"
+             "HTTP/1.1 200 OK\r\n"
+             "Content-Length: 7\r\n\r\n"
+             "ko.html"),
+  };
+  Initialize(reads, arraysize(reads), writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> stream1(NewTestStream("ok.html"));
+  scoped_ptr<HttpStream> stream2(NewTestStream("ko.html"));
+
+  HttpRequestHeaders headers1;
+  HttpResponseInfo response1;
+  EXPECT_EQ(OK, stream1->SendRequest(headers1, NULL, &response1, &callback_));
+  HttpRequestHeaders headers2;
+  HttpResponseInfo response2;
+  EXPECT_EQ(OK, stream2->SendRequest(headers2, NULL, &response2, &callback_));
+
+  EXPECT_EQ(OK, stream1->ReadResponseHeaders(&callback_));
+  ExpectResponse("ok.html", stream1, false);
+  stream1->Close(false);
+
+  EXPECT_EQ(OK, stream2->ReadResponseHeaders(&callback_));
+  ExpectResponse("ko.html", stream2, false);
+  stream2->Close(false);
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, SendOrderSwapped) {
+  MockWrite writes[] = {
+    MockWrite(false, 0, "GET /ko.html HTTP/1.1\r\n\r\n"),
+    MockWrite(false, 4, "GET /ok.html HTTP/1.1\r\n\r\n"),
+  };
+  MockRead reads[] = {
+    MockRead(false, 1, "HTTP/1.1 200 OK\r\n"),
+    MockRead(false, 2, "Content-Length: 7\r\n\r\n"),
+    MockRead(false, 3, "ko.html"),
+    MockRead(false, 5, "HTTP/1.1 200 OK\r\n"),
+    MockRead(false, 6, "Content-Length: 7\r\n\r\n"),
+    MockRead(false, 7, "ok.html"),
+  };
+  Initialize(reads, arraysize(reads), writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> stream1(NewTestStream("ok.html"));
+  scoped_ptr<HttpStream> stream2(NewTestStream("ko.html"));
+
+  TestSyncRequest(stream2, "ko.html");
+  TestSyncRequest(stream1, "ok.html");
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, ReadOrderSwapped) {
+  MockWrite writes[] = {
+    MockWrite(false, 0, "GET /ok.html HTTP/1.1\r\n\r\n"),
+    MockWrite(false, 1, "GET /ko.html HTTP/1.1\r\n\r\n"),
+  };
+  MockRead reads[] = {
+    MockRead(false, 2, "HTTP/1.1 200 OK\r\n"),
+    MockRead(false, 3, "Content-Length: 7\r\n\r\n"),
+    MockRead(false, 4, "ok.html"),
+    MockRead(false, 5, "HTTP/1.1 200 OK\r\n"),
+    MockRead(false, 6, "Content-Length: 7\r\n\r\n"),
+    MockRead(false, 7, "ko.html"),
+  };
+  Initialize(reads, arraysize(reads), writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> stream1(NewTestStream("ok.html"));
+  scoped_ptr<HttpStream> stream2(NewTestStream("ko.html"));
+
+  HttpRequestHeaders headers1;
+  HttpResponseInfo response1;
+  EXPECT_EQ(OK, stream1->SendRequest(headers1, NULL, &response1, &callback_));
+
+  HttpRequestHeaders headers2;
+  HttpResponseInfo response2;
+  EXPECT_EQ(OK, stream2->SendRequest(headers2, NULL, &response2, &callback_));
+
+  EXPECT_EQ(ERR_IO_PENDING, stream2->ReadResponseHeaders(&callback_));
+
+  EXPECT_EQ(OK, stream1->ReadResponseHeaders(&callback_));
+  ExpectResponse("ok.html", stream1, false);
+
+  stream1->Close(false);
+
+  EXPECT_LE(OK, callback_.WaitForResult());
+  ExpectResponse("ko.html", stream2, false);
+
+  stream2->Close(false);
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, SendWhileReading) {
+  MockWrite writes[] = {
+    MockWrite(false, 0, "GET /ok.html HTTP/1.1\r\n\r\n"),
+    MockWrite(false, 3, "GET /ko.html HTTP/1.1\r\n\r\n"),
+  };
+  MockRead reads[] = {
+    MockRead(false, 1, "HTTP/1.1 200 OK\r\n"),
+    MockRead(false, 2, "Content-Length: 7\r\n\r\n"),
+    MockRead(false, 4, "ok.html"),
+    MockRead(false, 5, "HTTP/1.1 200 OK\r\n"),
+    MockRead(false, 6, "Content-Length: 7\r\n\r\n"),
+    MockRead(false, 7, "ko.html"),
+  };
+  Initialize(reads, arraysize(reads), writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> stream1(NewTestStream("ok.html"));
+  scoped_ptr<HttpStream> stream2(NewTestStream("ko.html"));
+
+  HttpRequestHeaders headers1;
+  HttpResponseInfo response1;
+  EXPECT_EQ(OK, stream1->SendRequest(headers1, NULL, &response1, &callback_));
+  EXPECT_EQ(OK, stream1->ReadResponseHeaders(&callback_));
+
+  HttpRequestHeaders headers2;
+  HttpResponseInfo response2;
+  EXPECT_EQ(OK, stream2->SendRequest(headers2, NULL, &response2, &callback_));
+
+  ExpectResponse("ok.html", stream1, false);
+  stream1->Close(false);
+
+  EXPECT_EQ(OK, stream2->ReadResponseHeaders(&callback_));
+  ExpectResponse("ko.html", stream2, false);
+  stream2->Close(false);
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, AsyncSendWhileAsyncReadBlocked) {
+  MockWrite writes[] = {
+    MockWrite(false, 0, "GET /ok.html HTTP/1.1\r\n\r\n"),
+    MockWrite(true, 3, "GET /ko.html HTTP/1.1\r\n\r\n"),
+  };
+  MockRead reads[] = {
+    MockRead(false, 1, "HTTP/1.1 200 OK\r\n"),
+    MockRead(false, 2, "Content-Length: 7\r\n\r\n"),
+    MockRead(true, 4, "ok.html"),
+    MockRead(false, 5, "HTTP/1.1 200 OK\r\n"),
+    MockRead(false, 6, "Content-Length: 7\r\n\r\n"),
+    MockRead(false, 7, "ko.html"),
+  };
+  Initialize(reads, arraysize(reads), writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> stream1(NewTestStream("ok.html"));
+  scoped_ptr<HttpStream> stream2(NewTestStream("ko.html"));
+
+  HttpRequestHeaders headers1;
+  HttpResponseInfo response1;
+  EXPECT_EQ(OK, stream1->SendRequest(headers1, NULL, &response1, &callback_));
+  EXPECT_EQ(OK, stream1->ReadResponseHeaders(&callback_));
+  TestCompletionCallback callback1;
+  std::string expected = "ok.html";
+  scoped_refptr<IOBuffer> buffer(new IOBuffer(expected.size()));
+  EXPECT_EQ(ERR_IO_PENDING,
+            stream1->ReadResponseBody(buffer.get(), expected.size(),
+                                      &callback1));
+
+  HttpRequestHeaders headers2;
+  HttpResponseInfo response2;
+  TestCompletionCallback callback2;
+  EXPECT_EQ(ERR_IO_PENDING,
+            stream2->SendRequest(headers2, NULL, &response2, &callback2));
+
+  data_->RunFor(1);
+  EXPECT_LE(OK, callback2.WaitForResult());
+  EXPECT_EQ(ERR_IO_PENDING, stream2->ReadResponseHeaders(&callback2));
+
+  data_->RunFor(1);
+  EXPECT_EQ(static_cast<int>(expected.size()), callback1.WaitForResult());
+  std::string actual(buffer->data(), expected.size());
+  EXPECT_THAT(actual, StrEq(expected));
+  stream1->Close(false);
+
+  data_->StopAfter(8);
+  EXPECT_LE(OK, callback2.WaitForResult());
+  ExpectResponse("ko.html", stream2, false);
+  stream2->Close(false);
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, UnusedStreamAllowsLaterUse) {
+  MockWrite writes[] = {
+    MockWrite(false, 0, "GET /ok.html HTTP/1.1\r\n\r\n"),
+  };
+  MockRead reads[] = {
+    MockRead(false, 1, "HTTP/1.1 200 OK\r\n"),
+    MockRead(false, 2, "Content-Length: 7\r\n\r\n"),
+    MockRead(false, 3, "ok.html"),
+  };
+  Initialize(reads, arraysize(reads), writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> unused_stream(NewTestStream("unused.html"));
+  unused_stream->Close(false);
+
+  scoped_ptr<HttpStream> later_stream(NewTestStream("ok.html"));
+  TestSyncRequest(later_stream, "ok.html");
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, UnsentStreamAllowsLaterUse) {
+  MockWrite writes[] = {
+    MockWrite(true, 0, "GET /ok.html HTTP/1.1\r\n\r\n"),
+    MockWrite(false, 4, "GET /ko.html HTTP/1.1\r\n\r\n"),
+  };
+  MockRead reads[] = {
+    MockRead(true, 1, "HTTP/1.1 200 OK\r\n"),
+    MockRead(true, 2, "Content-Length: 7\r\n\r\n"),
+    MockRead(true, 3, "ok.html"),
+    MockRead(false, 5, "HTTP/1.1 200 OK\r\n"),
+    MockRead(false, 6, "Content-Length: 7\r\n\r\n"),
+    MockRead(false, 7, "ko.html"),
+  };
+  Initialize(reads, arraysize(reads), writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> stream(NewTestStream("ok.html"));
+
+  HttpRequestHeaders headers;
+  HttpResponseInfo response;
+  EXPECT_EQ(ERR_IO_PENDING,
+            stream->SendRequest(headers, NULL, &response, &callback_));
+
+  scoped_ptr<HttpStream> unsent_stream(NewTestStream("unsent.html"));
+  HttpRequestHeaders unsent_headers;
+  HttpResponseInfo unsent_response;
+  EXPECT_EQ(ERR_IO_PENDING,
+            unsent_stream->SendRequest(unsent_headers, NULL, &unsent_response,
+                                       &callback_));
+  unsent_stream->Close(false);
+
+  data_->RunFor(1);
+  EXPECT_LE(OK, callback_.WaitForResult());
+
+  EXPECT_EQ(ERR_IO_PENDING, stream->ReadResponseHeaders(&callback_));
+  data_->RunFor(2);
+  EXPECT_LE(OK, callback_.WaitForResult());
+
+  ExpectResponse("ok.html", stream, true);
+
+  stream->Close(false);
+
+  data_->StopAfter(8);
+  scoped_ptr<HttpStream> later_stream(NewTestStream("ko.html"));
+  TestSyncRequest(later_stream, "ko.html");
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, FailedSend) {
+  MockWrite writes[] = {
+    MockWrite(true, ERR_FAILED),
+  };
+  Initialize(NULL, 0, writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> failed_stream(NewTestStream("ok.html"));
+  scoped_ptr<HttpStream> evicted_stream(NewTestStream("evicted.html"));
+  scoped_ptr<HttpStream> closed_stream(NewTestStream("closed.html"));
+  scoped_ptr<HttpStream> rejected_stream(NewTestStream("rejected.html"));
+
+  HttpRequestHeaders headers;
+  HttpResponseInfo response;
+  TestCompletionCallback failed_callback;
+  EXPECT_EQ(ERR_IO_PENDING,
+            failed_stream->SendRequest(headers, NULL, &response,
+                                       &failed_callback));
+  TestCompletionCallback evicted_callback;
+  EXPECT_EQ(ERR_IO_PENDING,
+            evicted_stream->SendRequest(headers, NULL, &response,
+                                        &evicted_callback));
+  EXPECT_EQ(ERR_IO_PENDING,
+            closed_stream->SendRequest(headers, NULL, &response,
+                                       &callback_));
+  closed_stream->Close(false);
+
+  data_->RunFor(1);
+  EXPECT_EQ(ERR_FAILED, failed_callback.WaitForResult());
+  EXPECT_EQ(ERR_PIPELINE_EVICTION, evicted_callback.WaitForResult());
+  EXPECT_EQ(ERR_PIPELINE_EVICTION,
+            rejected_stream->SendRequest(headers, NULL, &response,
+                                         &callback_));
+
+  failed_stream->Close(true);
+  evicted_stream->Close(true);
+  rejected_stream->Close(true);
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, ConnectionSuddenlyClosedAfterResponse) {
+  MockWrite writes[] = {
+    MockWrite(false, 0, "GET /ok.html HTTP/1.1\r\n\r\n"),
+    MockWrite(false, 1, "GET /read_evicted.html HTTP/1.1\r\n\r\n"),
+    MockWrite(false, 2, "GET /read_rejected.html HTTP/1.1\r\n\r\n"),
+    MockWrite(true, ERR_SOCKET_NOT_CONNECTED, 5),
+  };
+  MockRead reads[] = {
+    MockRead(false, 3, "HTTP/1.1 200 OK\r\n\r\n"),
+    MockRead(false, 4, "ok.html"),
+  };
+  Initialize(reads, arraysize(reads), writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> closed_stream(NewTestStream("ok.html"));
+  scoped_ptr<HttpStream> read_evicted_stream(
+      NewTestStream("read_evicted.html"));
+  scoped_ptr<HttpStream> read_rejected_stream(
+      NewTestStream("read_rejected.html"));
+  scoped_ptr<HttpStream> send_closed_stream(
+      NewTestStream("send_closed.html"));
+  scoped_ptr<HttpStream> send_evicted_stream(
+      NewTestStream("send_evicted.html"));
+  scoped_ptr<HttpStream> send_rejected_stream(
+      NewTestStream("send_rejected.html"));
+
+  HttpRequestHeaders headers;
+  HttpResponseInfo response;
+  EXPECT_EQ(OK, closed_stream->SendRequest(headers, NULL, &response,
+                                           &callback_));
+  EXPECT_EQ(OK, read_evicted_stream->SendRequest(headers, NULL, &response,
+                                                 &callback_));
+  EXPECT_EQ(OK, read_rejected_stream->SendRequest(headers, NULL, &response,
+                                                  &callback_));
+  TestCompletionCallback send_closed_callback;
+  EXPECT_EQ(ERR_IO_PENDING,
+            send_closed_stream->SendRequest(headers, NULL, &response,
+                                            &send_closed_callback));
+  TestCompletionCallback send_evicted_callback;
+  EXPECT_EQ(ERR_IO_PENDING,
+            send_evicted_stream->SendRequest(headers, NULL, &response,
+                                             &send_evicted_callback));
+
+  TestCompletionCallback read_evicted_callback;
+  EXPECT_EQ(ERR_IO_PENDING,
+            read_evicted_stream->ReadResponseHeaders(&read_evicted_callback));
+
+  EXPECT_EQ(OK, closed_stream->ReadResponseHeaders(&callback_));
+  ExpectResponse("ok.html", closed_stream, false);
+  closed_stream->Close(true);
+
+  EXPECT_EQ(ERR_PIPELINE_EVICTION, read_evicted_callback.WaitForResult());
+  read_evicted_stream->Close(true);
+
+  EXPECT_EQ(ERR_PIPELINE_EVICTION,
+            read_rejected_stream->ReadResponseHeaders(&callback_));
+  read_rejected_stream->Close(true);
+
+  data_->RunFor(1);
+  EXPECT_EQ(ERR_SOCKET_NOT_CONNECTED, send_closed_callback.WaitForResult());
+  send_closed_stream->Close(true);
+
+  EXPECT_EQ(ERR_PIPELINE_EVICTION, send_evicted_callback.WaitForResult());
+  send_evicted_stream->Close(true);
+
+  EXPECT_EQ(ERR_PIPELINE_EVICTION,
+            send_rejected_stream->SendRequest(headers, NULL, &response,
+                                              &callback_));
+  send_rejected_stream->Close(true);
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, AbortWhileSending) {
+  MockWrite writes[] = {
+    MockWrite(true, 0, "GET /aborts.html HTTP/1.1\r\n\r\n"),
+  };
+  Initialize(NULL, 0, writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> aborted_stream(NewTestStream("aborts.html"));
+  scoped_ptr<HttpStream> evicted_stream(NewTestStream("evicted.html"));
+
+  HttpRequestHeaders headers;
+  HttpResponseInfo response;
+  TestCompletionCallback aborted_callback;
+  EXPECT_EQ(ERR_IO_PENDING,
+            aborted_stream->SendRequest(headers, NULL, &response,
+                                        &aborted_callback));
+  TestCompletionCallback evicted_callback;
+  EXPECT_EQ(ERR_IO_PENDING,
+            evicted_stream->SendRequest(headers, NULL, &response,
+                                        &evicted_callback));
+
+  aborted_stream->Close(true);
+  EXPECT_EQ(ERR_PIPELINE_EVICTION, evicted_callback.WaitForResult());
+  evicted_stream->Close(true);
+  EXPECT_FALSE(aborted_callback.have_result());
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, AbortWhileSendingSecondRequest) {
+  MockWrite writes[] = {
+    MockWrite(true, 0, "GET /ok.html HTTP/1.1\r\n\r\n"),
+    MockWrite(true, 1, "GET /aborts.html HTTP/1.1\r\n\r\n"),
+  };
+  Initialize(NULL, 0, writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> ok_stream(NewTestStream("ok.html"));
+  scoped_ptr<HttpStream> aborted_stream(NewTestStream("aborts.html"));
+  scoped_ptr<HttpStream> evicted_stream(NewTestStream("evicted.html"));
+
+  HttpRequestHeaders headers;
+  HttpResponseInfo response;
+  TestCompletionCallback ok_callback;
+  EXPECT_EQ(ERR_IO_PENDING,
+            ok_stream->SendRequest(headers, NULL, &response,
+                                   &ok_callback));
+  TestCompletionCallback aborted_callback;
+  EXPECT_EQ(ERR_IO_PENDING,
+            aborted_stream->SendRequest(headers, NULL, &response,
+                                        &aborted_callback));
+  TestCompletionCallback evicted_callback;
+  EXPECT_EQ(ERR_IO_PENDING,
+            evicted_stream->SendRequest(headers, NULL, &response,
+                                        &evicted_callback));
+
+  data_->RunFor(1);
+  EXPECT_LE(OK, ok_callback.WaitForResult());
+  MessageLoop::current()->RunAllPending();
+  aborted_stream->Close(true);
+  EXPECT_EQ(ERR_PIPELINE_EVICTION, evicted_callback.WaitForResult());
+  evicted_stream->Close(true);
+  EXPECT_FALSE(aborted_callback.have_result());
+  ok_stream->Close(true);
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, AbortWhileReadingHeaders) {
+  MockWrite writes[] = {
+    MockWrite(false, 0, "GET /aborts.html HTTP/1.1\r\n\r\n"),
+    MockWrite(false, 1, "GET /evicted.html HTTP/1.1\r\n\r\n"),
+  };
+  MockRead reads[] = {
+    MockRead(true, ERR_FAILED, 2),
+  };
+  Initialize(reads, arraysize(reads), writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> aborted_stream(NewTestStream("aborts.html"));
+  scoped_ptr<HttpStream> evicted_stream(NewTestStream("evicted.html"));
+  scoped_ptr<HttpStream> rejected_stream(NewTestStream("rejected.html"));
+
+  HttpRequestHeaders headers;
+  HttpResponseInfo response;
+  EXPECT_EQ(OK, aborted_stream->SendRequest(headers, NULL, &response,
+                                            &callback_));
+  EXPECT_EQ(OK, evicted_stream->SendRequest(headers, NULL, &response,
+                                            &callback_));
+
+  EXPECT_EQ(ERR_IO_PENDING, aborted_stream->ReadResponseHeaders(&callback_));
+  TestCompletionCallback evicted_callback;
+  EXPECT_EQ(ERR_IO_PENDING,
+            evicted_stream->ReadResponseHeaders(&evicted_callback));
+
+  aborted_stream->Close(true);
+  EXPECT_EQ(ERR_PIPELINE_EVICTION, evicted_callback.WaitForResult());
+  evicted_stream->Close(true);
+
+  EXPECT_EQ(ERR_PIPELINE_EVICTION,
+            rejected_stream->SendRequest(headers, NULL, &response, &callback_));
+  rejected_stream->Close(true);
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, PendingResponseAbandoned) {
+  MockWrite writes[] = {
+    MockWrite(false, 0, "GET /ok.html HTTP/1.1\r\n\r\n"),
+    MockWrite(false, 1, "GET /abandoned.html HTTP/1.1\r\n\r\n"),
+    MockWrite(false, 2, "GET /evicted.html HTTP/1.1\r\n\r\n"),
+  };
+  MockRead reads[] = {
+    MockRead(false, 3, "HTTP/1.1 200 OK\r\n"),
+    MockRead(false, 4, "Content-Length: 7\r\n\r\n"),
+    MockRead(false, 5, "ok.html"),
+  };
+  Initialize(reads, arraysize(reads), writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> ok_stream(NewTestStream("ok.html"));
+  scoped_ptr<HttpStream> abandoned_stream(NewTestStream("abandoned.html"));
+  scoped_ptr<HttpStream> evicted_stream(NewTestStream("evicted.html"));
+
+  HttpRequestHeaders headers;
+  HttpResponseInfo response;
+  EXPECT_EQ(OK, ok_stream->SendRequest(headers, NULL, &response, &callback_));
+  EXPECT_EQ(OK, abandoned_stream->SendRequest(headers, NULL, &response,
+                                              &callback_));
+  EXPECT_EQ(OK, evicted_stream->SendRequest(headers, NULL, &response,
+                                            &callback_));
+
+  EXPECT_EQ(OK, ok_stream->ReadResponseHeaders(&callback_));
+  TestCompletionCallback abandoned_callback;
+  EXPECT_EQ(ERR_IO_PENDING,
+            abandoned_stream->ReadResponseHeaders(&abandoned_callback));
+  TestCompletionCallback evicted_callback;
+  EXPECT_EQ(ERR_IO_PENDING,
+            evicted_stream->ReadResponseHeaders(&evicted_callback));
+
+  abandoned_stream->Close(false);
+
+  ExpectResponse("ok.html", ok_stream, false);
+  ok_stream->Close(false);
+
+  EXPECT_EQ(ERR_PIPELINE_EVICTION, evicted_callback.WaitForResult());
+  evicted_stream->Close(true);
+  EXPECT_FALSE(evicted_stream->IsConnectionReusable());
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, DisconnectedAfterOneRequestRecovery) {
+  MockWrite writes[] = {
+    MockWrite(false, 0, "GET /ok.html HTTP/1.1\r\n\r\n"),
+    MockWrite(false, 1, "GET /evicted.html HTTP/1.1\r\n\r\n"),
+    MockWrite(false, ERR_SOCKET_NOT_CONNECTED, 6),
+  };
+  MockRead reads[] = {
+    MockRead(false, 2, "HTTP/1.1 200 OK\r\n"),
+    MockRead(false, 3, "Content-Length: 7\r\n\r\n"),
+    MockRead(false, 4, "ok.html"),
+    MockRead(false, ERR_SOCKET_NOT_CONNECTED, 5),
+  };
+  Initialize(reads, arraysize(reads), writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> ok_stream(NewTestStream("ok.html"));
+  scoped_ptr<HttpStream> evicted_read_stream(NewTestStream("evicted.html"));
+  scoped_ptr<HttpStream> evicted_send_stream(NewTestStream("evicted.html"));
+
+  HttpRequestHeaders headers;
+  HttpResponseInfo response;
+  EXPECT_EQ(OK, ok_stream->SendRequest(headers, NULL, &response, &callback_));
+  EXPECT_EQ(OK, evicted_read_stream->SendRequest(
+      headers, NULL, &response, &callback_));
+
+  EXPECT_EQ(OK, ok_stream->ReadResponseHeaders(&callback_));
+  ExpectResponse("ok.html", ok_stream, false);
+  ok_stream->Close(false);
+
+  EXPECT_EQ(ERR_PIPELINE_EVICTION,
+            evicted_read_stream->ReadResponseHeaders(&callback_));
+  EXPECT_EQ(ERR_PIPELINE_EVICTION,
+            evicted_send_stream->SendRequest(headers, NULL, &response,
+                                             &callback_));
+
+  evicted_read_stream->Close(true);
+  evicted_send_stream->Close(true);
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, DisconnectedPendingReadRecovery) {
+  MockWrite writes[] = {
+    MockWrite(false, 0, "GET /ok.html HTTP/1.1\r\n\r\n"),
+    MockWrite(false, 1, "GET /evicted.html HTTP/1.1\r\n\r\n"),
+  };
+  MockRead reads[] = {
+    MockRead(false, 2, "HTTP/1.1 200 OK\r\n"),
+    MockRead(false, 3, "Content-Length: 7\r\n\r\n"),
+    MockRead(false, 4, "ok.html"),
+    MockRead(false, ERR_SOCKET_NOT_CONNECTED, 5),
+  };
+  Initialize(reads, arraysize(reads), writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> ok_stream(NewTestStream("ok.html"));
+  scoped_ptr<HttpStream> evicted_stream(NewTestStream("evicted.html"));
+
+  HttpRequestHeaders headers;
+  HttpResponseInfo response;
+  EXPECT_EQ(OK, ok_stream->SendRequest(headers, NULL, &response, &callback_));
+  EXPECT_EQ(OK, evicted_stream->SendRequest(
+      headers, NULL, &response, &callback_));
+
+  EXPECT_EQ(OK, ok_stream->ReadResponseHeaders(&callback_));
+  ExpectResponse("ok.html", ok_stream, false);
+
+  TestCompletionCallback evicted_callback;
+  EXPECT_EQ(ERR_IO_PENDING,
+            evicted_stream->ReadResponseHeaders(&evicted_callback));
+
+  ok_stream->Close(false);
+
+  EXPECT_EQ(ERR_PIPELINE_EVICTION, evicted_callback.WaitForResult());
+  evicted_stream->Close(false);
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, CloseCalledBeforeNextReadLoop) {
+  MockWrite writes[] = {
+    MockWrite(false, 0, "GET /ok.html HTTP/1.1\r\n\r\n"),
+    MockWrite(false, 1, "GET /evicted.html HTTP/1.1\r\n\r\n"),
+  };
+  MockRead reads[] = {
+    MockRead(false, 2, "HTTP/1.1 200 OK\r\n"),
+    MockRead(false, 3, "Content-Length: 7\r\n\r\n"),
+    MockRead(false, 4, "ok.html"),
+    MockRead(false, ERR_SOCKET_NOT_CONNECTED, 5),
+  };
+  Initialize(reads, arraysize(reads), writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> ok_stream(NewTestStream("ok.html"));
+  scoped_ptr<HttpStream> evicted_stream(NewTestStream("evicted.html"));
+
+  HttpRequestHeaders headers;
+  HttpResponseInfo response;
+  EXPECT_EQ(OK, ok_stream->SendRequest(headers, NULL, &response, &callback_));
+  EXPECT_EQ(OK, evicted_stream->SendRequest(
+      headers, NULL, &response, &callback_));
+
+  EXPECT_EQ(OK, ok_stream->ReadResponseHeaders(&callback_));
+  ExpectResponse("ok.html", ok_stream, false);
+
+  TestCompletionCallback evicted_callback;
+  EXPECT_EQ(ERR_IO_PENDING,
+            evicted_stream->ReadResponseHeaders(&evicted_callback));
+
+  ok_stream->Close(false);
+  evicted_stream->Close(false);
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, CloseCalledBeforeReadCallback) {
+  MockWrite writes[] = {
+    MockWrite(false, 0, "GET /ok.html HTTP/1.1\r\n\r\n"),
+    MockWrite(false, 1, "GET /evicted.html HTTP/1.1\r\n\r\n"),
+  };
+  MockRead reads[] = {
+    MockRead(false, 2, "HTTP/1.1 200 OK\r\n"),
+    MockRead(false, 3, "Content-Length: 7\r\n\r\n"),
+    MockRead(false, 4, "ok.html"),
+    MockRead(false, ERR_SOCKET_NOT_CONNECTED, 5),
+  };
+  Initialize(reads, arraysize(reads), writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> ok_stream(NewTestStream("ok.html"));
+  scoped_ptr<HttpStream> evicted_stream(NewTestStream("evicted.html"));
+
+  HttpRequestHeaders headers;
+  HttpResponseInfo response;
+  EXPECT_EQ(OK, ok_stream->SendRequest(headers, NULL, &response, &callback_));
+  EXPECT_EQ(OK, evicted_stream->SendRequest(
+      headers, NULL, &response, &callback_));
+
+  EXPECT_EQ(OK, ok_stream->ReadResponseHeaders(&callback_));
+  ExpectResponse("ok.html", ok_stream, false);
+
+  TestCompletionCallback evicted_callback;
+  EXPECT_EQ(ERR_IO_PENDING,
+            evicted_stream->ReadResponseHeaders(&evicted_callback));
+
+  ok_stream->Close(false);
+
+  // The posted tasks should be:
+  // 1. FillPipeline
+  // 2. DoReadHeadersLoop, which will post:
+  // 3. InvokeUserCallback
+  SuddenCloseObserver observer(evicted_stream.get(), 3);
+  MessageLoop::current()->AddTaskObserver(&observer);
+  MessageLoop::current()->RunAllPending();
+  EXPECT_FALSE(evicted_callback.have_result());
+}
+
+TEST_F(HttpPipelinedConnectionImplTest, OnPipelineHasCapacity) {
+  MockWrite writes[] = {
+    MockWrite(false, 0, "GET /ok.html HTTP/1.1\r\n\r\n"),
+  };
+  Initialize(NULL, 0, writes, arraysize(writes));
+
+  scoped_ptr<HttpStream> stream(NewTestStream("ok.html"));
+
+  EXPECT_CALL(delegate_, OnPipelineHasCapacity(pipeline_.get())).Times(1);
+  HttpRequestHeaders headers;
+  HttpResponseInfo response;
+  EXPECT_EQ(OK, stream->SendRequest(headers, NULL, &response, &callback_));
+  MessageLoop::current()->RunAllPending();
+
+  stream->Close(false);
+  EXPECT_CALL(delegate_, OnPipelineHasCapacity(pipeline_.get())).Times(1);
+  stream.reset(NULL);
+  MessageLoop::current()->RunAllPending();
+}
+
+}  // namespace net