Implement QuicChannel and QuicChannelFactory

remoting/protocol/quic_channel_factory_unittest.cc

+// Copyright 2015 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 "remoting/protocol/quic_channel_factory.h"
+
+#include "base/bind.h"
+#include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
+#include "net/base/io_buffer.h"
+#include "net/base/net_errors.h"
+#include "net/base/test_completion_callback.h"
+#include "net/quic/p2p/quic_p2p_session.h"
+#include "net/quic/p2p/quic_p2p_stream.h"
+#include "net/socket/socket.h"
+#include "remoting/base/constants.h"
+#include "remoting/protocol/connection_tester.h"
+#include "remoting/protocol/fake_datagram_socket.h"
+#include "remoting/protocol/p2p_stream_socket.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using testing::_;
+using testing::AtMost;
+using testing::InvokeWithoutArgs;
+
+namespace remoting {
+namespace protocol {
+
+namespace {
+
+const int kMessageSize = 1024;
+const int kMessages = 100;
+
+const char kTestChannelName[] = "test";
+const char kTestChannelName2[] = "test2";
+
+}  // namespace
+
+class QuicChannelFactoryTest : public testing::Test,
+                               public testing::WithParamInterface<bool> {
+ public:
+  void DeleteAll() {
+    host_channel1_.reset();
+    host_channel2_.reset();
+    client_channel1_.reset();
+    client_channel2_.reset();
+    host_quic_.reset();
+    client_quic_.reset();
+  }
+
+  void FailedReadDeleteAll(int result) {
+    EXPECT_NE(net::OK, result);
+    DeleteAll();
+  }
+
+  void OnChannelConnected(scoped_ptr<P2PStreamSocket>* storage,
+                          int* counter,
+                          base::RunLoop* run_loop,
+                          scoped_ptr<P2PStreamSocket> socket) {
+    *storage = socket.Pass();
+    if (counter) {
+      --(*counter);
+      EXPECT_GE(*counter, 0);
+      if (*counter == 0)
+        run_loop->Quit();
+    }
+  }
+
+  void OnChannelConnectedExpectFail(scoped_ptr<P2PStreamSocket> socket) {
+    EXPECT_FALSE(socket);
+    host_quic_->CancelChannelCreation(kTestChannelName2);
+    DeleteAll();
+  }
+
+  void OnChannelConnectedNotReached(scoped_ptr<P2PStreamSocket> socket) {
+    NOTREACHED();
+  }
+
+ protected:
+  void TearDown() override {
+    DeleteAll();
+    // QuicChannelFactory destroys the internals asynchronously. Run all pending
+    // tasks to avoid leaking memory.
+    base::RunLoop().RunUntilIdle();
+  }
+
+  void Initialize() {
+    host_base_channel_factory_.PairWith(&client_base_channel_factory_);
+    host_base_channel_factory_.set_asynchronous_create(GetParam());
+    client_base_channel_factory_.set_asynchronous_create(GetParam());
+
+    const char kTestSessionId[] = "123123";
+    host_quic_.reset(new QuicChannelFactory(kTestSessionId, true));
+    client_quic_.reset(new QuicChannelFactory(kTestSessionId, false));
+
+    std::string message = client_quic_->CreateSessionInitiateConfigMessage();
+    EXPECT_TRUE(host_quic_->ProcessSessionInitiateConfigMessage(message));
+    message = host_quic_->CreateSessionAcceptConfigMessage();
+    EXPECT_TRUE(client_quic_->ProcessSessionAcceptConfigMessage(message));
+
+    const char kTestSharedSecret[] = "Shared Secret";
+    host_quic_->Start(&host_base_channel_factory_, kTestSharedSecret);
+    client_quic_->Start(&client_base_channel_factory_, kTestSharedSecret);
+
+    FakeDatagramSocket* host_base_channel =
+        host_base_channel_factory_.GetFakeChannel(kQuicChannelName);
+    if (host_base_channel)
+      host_base_channel->set_async_send(GetParam());
+
+    FakeDatagramSocket* client_base_channel =
+        client_base_channel_factory_.GetFakeChannel(kQuicChannelName);
+    if (client_base_channel)
+      client_base_channel->set_async_send(GetParam());
+  }
+
+  void CreateChannel(const std::string& name,
+                     scoped_ptr<P2PStreamSocket>* host_channel,
+                     scoped_ptr<P2PStreamSocket>* client_channel) {
+    int counter = 2;
+    base::RunLoop run_loop;
+    host_quic_->CreateChannel(
+        name,
+        base::Bind(&QuicChannelFactoryTest::OnChannelConnected,
+                   base::Unretained(this), host_channel, &counter, &run_loop));
+    client_quic_->CreateChannel(
+        name, base::Bind(&QuicChannelFactoryTest::OnChannelConnected,
+                         base::Unretained(this), client_channel, &counter,
+                         &run_loop));
+
+    run_loop.Run();
+
+    EXPECT_TRUE(host_channel->get());
+    EXPECT_TRUE(client_channel->get());
+  }
+
+  scoped_refptr<net::IOBufferWithSize> CreateTestBuffer(int size) {
+    scoped_refptr<net::IOBufferWithSize> result =
+        new net::IOBufferWithSize(size);
+    for (int i = 0; i < size; ++i) {
+      result->data()[i] = rand() % 256;
+    }
+    return result;
+  }
+
+  base::MessageLoop message_loop_;
+
+  FakeDatagramChannelFactory host_base_channel_factory_;
+  FakeDatagramChannelFactory client_base_channel_factory_;
+
+  scoped_ptr<QuicChannelFactory> host_quic_;
+  scoped_ptr<QuicChannelFactory> client_quic_;
+
+  scoped_ptr<P2PStreamSocket> host_channel1_;
+  scoped_ptr<P2PStreamSocket> client_channel1_;
+  scoped_ptr<P2PStreamSocket> host_channel2_;
+  scoped_ptr<P2PStreamSocket> client_channel2_;
+};
+
+INSTANTIATE_TEST_CASE_P(SyncWrite,
+                        QuicChannelFactoryTest,
+                        ::testing::Values(false));
+INSTANTIATE_TEST_CASE_P(AsyncWrite,
+                        QuicChannelFactoryTest,
+                        ::testing::Values(true));
+
+TEST_P(QuicChannelFactoryTest, OneChannel) {
+  Initialize();
+
+  scoped_ptr<P2PStreamSocket> host_channel;
+  scoped_ptr<P2PStreamSocket> client_channel;
+  ASSERT_NO_FATAL_FAILURE(
+      CreateChannel(kTestChannelName, &host_channel, &client_channel));
+
+  StreamConnectionTester tester(host_channel.get(), client_channel.get(),
+                                kMessageSize, kMessages);
+  tester.Start();
+  message_loop_.Run();
+  tester.CheckResults();
+}
+
+TEST_P(QuicChannelFactoryTest, TwoChannels) {
+  Initialize();
+
+  scoped_ptr<P2PStreamSocket> host_channel1_;
+  scoped_ptr<P2PStreamSocket> client_channel1_;
+  ASSERT_NO_FATAL_FAILURE(
+      CreateChannel(kTestChannelName, &host_channel1_, &client_channel1_));
+
+  scoped_ptr<P2PStreamSocket> host_channel2_;
+  scoped_ptr<P2PStreamSocket> client_channel2_;
+  ASSERT_NO_FATAL_FAILURE(
+      CreateChannel(kTestChannelName2, &host_channel2_, &client_channel2_));
+
+  StreamConnectionTester tester1(host_channel1_.get(), client_channel1_.get(),
+                                 kMessageSize, kMessages);
+  StreamConnectionTester tester2(host_channel2_.get(), client_channel2_.get(),
+                                 kMessageSize, kMessages);
+  tester1.Start();
+  tester2.Start();
+  while (!tester1.done() || !tester2.done()) {
+    message_loop_.Run();
+  }
+  tester1.CheckResults();
+  tester2.CheckResults();
+}
+
+TEST_P(QuicChannelFactoryTest, SendFail) {
+  Initialize();
+
+  scoped_ptr<P2PStreamSocket> host_channel1_;
+  scoped_ptr<P2PStreamSocket> client_channel1_;
+  ASSERT_NO_FATAL_FAILURE(
+      CreateChannel(kTestChannelName, &host_channel1_, &client_channel1_));
+
+  scoped_ptr<P2PStreamSocket> host_channel2_;
+  scoped_ptr<P2PStreamSocket> client_channel2_;
+  ASSERT_NO_FATAL_FAILURE(
+      CreateChannel(kTestChannelName2, &host_channel2_, &client_channel2_));
+
+  host_base_channel_factory_.GetFakeChannel(kQuicChannelName)
+      ->set_next_send_error(net::ERR_FAILED);
+
+  scoped_refptr<net::IOBufferWithSize> buf = CreateTestBuffer(100);
+
+
+  // Try writing to a channel. This should result in all stream being closed due
+  // to an error.
+  {
+    net::TestCompletionCallback write_cb_1;
+    host_channel1_->Write(buf.get(), buf->size(), write_cb_1.callback());
+    base::RunLoop().RunUntilIdle();
+  }
+
+  // Repeated attempt to write should result in an error.
+  {
+    net::TestCompletionCallback write_cb_1;
+    net::TestCompletionCallback write_cb_2;
+    EXPECT_NE(net::OK, host_channel1_->Write(buf.get(), buf->size(),
+                                             write_cb_1.callback()));
+    EXPECT_FALSE(write_cb_1.have_result());
+    EXPECT_NE(net::OK, host_channel1_->Write(buf.get(), buf->size(),
+                                             write_cb_2.callback()));
+    EXPECT_FALSE(write_cb_2.have_result());
+  }
+}
+
+TEST_P(QuicChannelFactoryTest, DeleteWhenFailed) {
+  Initialize();
+
+  ASSERT_NO_FATAL_FAILURE(
+      CreateChannel(kTestChannelName, &host_channel1_, &client_channel1_));
+  ASSERT_NO_FATAL_FAILURE(
+      CreateChannel(kTestChannelName2, &host_channel2_, &client_channel2_));
+
+  host_base_channel_factory_.GetFakeChannel(kQuicChannelName)
+      ->set_next_send_error(net::ERR_FAILED);
+
+  scoped_refptr<net::IOBufferWithSize> read_buf =
+      new net::IOBufferWithSize(100);
+
+  EXPECT_EQ(net::ERR_IO_PENDING,
+            host_channel1_->Read(
+                read_buf.get(), read_buf->size(),
+                base::Bind(&QuicChannelFactoryTest::FailedReadDeleteAll,
+                           base::Unretained(this))));
+
+  // Try writing to a channel. This should result it DeleteAll() called and the
+  // connection torn down.
+  scoped_refptr<net::IOBufferWithSize> buf = CreateTestBuffer(100);
+  net::TestCompletionCallback write_cb_1;
+  host_channel1_->Write(buf.get(), buf->size(), write_cb_1.callback());
+
+  base::RunLoop().RunUntilIdle();
+
+  // Check that the connection was torn down.
+  EXPECT_FALSE(host_quic_);
+}
+
+TEST_P(QuicChannelFactoryTest, SessionFail) {
+  host_base_channel_factory_.set_fail_create(true);
+  Initialize();
+
+  host_quic_->CreateChannel(
+      kTestChannelName,
+      base::Bind(&QuicChannelFactoryTest::OnChannelConnectedExpectFail,
+                 base::Unretained(this)));
+
+  // host_quic_ may be destroyed at this point in sync mode.
+  if (host_quic_) {
+    host_quic_->CreateChannel(
+        kTestChannelName2,
+        base::Bind(&QuicChannelFactoryTest::OnChannelConnectedNotReached,
+                   base::Unretained(this)));
+  }
+
+  base::RunLoop().RunUntilIdle();
+
+  // Check that DeleteAll() was called and the connection was torn down.
+  EXPECT_FALSE(host_quic_);
+}
+
+// Verify that the host just ignores incoming stream with unexpected name.
+TEST_P(QuicChannelFactoryTest, UnknownName) {
+  Initialize();
+
+  // Create a new channel from the client side.
+  client_quic_->CreateChannel(
+      kTestChannelName, base::Bind(&QuicChannelFactoryTest::OnChannelConnected,
+                                   base::Unretained(this), &client_channel1_,
+                                   nullptr, nullptr));
+  base::RunLoop().RunUntilIdle();
+
+  EXPECT_EQ(0U, host_quic_->GetP2PSessionForTests()->GetNumOpenStreams());
+}
+
+// Verify that incoming streams that have received only partial name are
+// destroyed correctly.
+TEST_P(QuicChannelFactoryTest, SendPartialName) {
+  Initialize();
+
+  base::RunLoop().RunUntilIdle();
+
+  net::QuicP2PSession* session = client_quic_->GetP2PSessionForTests();
+  net::QuicP2PStream* stream = session->CreateOutgoingDynamicStream();
+
+  std::string name = kTestChannelName;
+  // Send only half of the name to the host.
+  stream->WriteHeader(std::string(1, static_cast<char>(name.size())) +
+                      name.substr(0, name.size() / 2));
+
+  base::RunLoop().RunUntilIdle();
+
+  // Host should have received the new stream and is still waiting for the name.
+  EXPECT_EQ(1U, host_quic_->GetP2PSessionForTests()->GetNumOpenStreams());
+
+  session->CloseStream(stream->id());
+  base::RunLoop().RunUntilIdle();
+
+  // Verify that the stream was closed on the host side.
+  EXPECT_EQ(0U, host_quic_->GetP2PSessionForTests()->GetNumOpenStreams());
+
+  // Create another stream with only partial name and tear down connection while
+  // it's still pending.
+  stream = session->CreateOutgoingDynamicStream();
+  stream->WriteHeader(std::string(1, static_cast<char>(name.size())) +
+                      name.substr(0, name.size() / 2));
+  base::RunLoop().RunUntilIdle();
+  EXPECT_EQ(1U, host_quic_->GetP2PSessionForTests()->GetNumOpenStreams());
+}
+
+}  // namespace protocol
+}  // namespace remoting