remoting/test/protocol_perftest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/base64.h"
   6 #include "base/files/file_util.h"
   7 #include "base/message_loop/message_loop.h"
   8 #include "base/rand_util.h"
   9 #include "base/run_loop.h"
  10 #include "base/single_thread_task_runner.h"
  11 #include "base/synchronization/waitable_event.h"
  12 #include "base/thread_task_runner_handle.h"
  13 #include "jingle/glue/thread_wrapper.h"
  14 #include "net/base/test_data_directory.h"
  15 #include "net/url_request/url_request_context_getter.h"
  16 #include "remoting/base/rsa_key_pair.h"
  17 #include "remoting/client/audio_player.h"
  18 #include "remoting/client/chromoting_client.h"
  19 #include "remoting/client/client_context.h"
  20 #include "remoting/client/client_user_interface.h"
  21 #include "remoting/client/video_renderer.h"
  22 #include "remoting/host/chromoting_host.h"
  23 #include "remoting/host/chromoting_host_context.h"
  24 #include "remoting/host/fake_desktop_environment.h"
  25 #include "remoting/host/video_frame_pump.h"
  26 #include "remoting/protocol/jingle_session_manager.h"
  27 #include "remoting/protocol/libjingle_transport_factory.h"
  28 #include "remoting/protocol/me2me_host_authenticator_factory.h"
  29 #include "remoting/protocol/negotiating_client_authenticator.h"
  30 #include "remoting/protocol/session_config.h"
  31 #include "remoting/signaling/fake_signal_strategy.h"
  32 #include "remoting/test/fake_network_dispatcher.h"
  33 #include "remoting/test/fake_port_allocator.h"
  34 #include "remoting/test/fake_socket_factory.h"
  35 #include "testing/gtest/include/gtest/gtest.h"
  36
  37 namespace remoting {
  38
  39 using protocol::ChannelConfig;
  40
  41 const char kHostJid[] = "host_jid@example.com/host";
  42 const char kHostOwner[] = "jane.doe@example.com";
  43 const char kClientJid[] = "jane.doe@example.com/client";
  44
  45 struct NetworkPerformanceParams {
  46   NetworkPerformanceParams(int bandwidth,
  47                            int max_buffers,
  48                            double latency_average_ms,
  49                            double latency_stddev_ms,
  50                            double out_of_order_rate)
  51       : bandwidth(bandwidth),
  52         max_buffers(max_buffers),
  53         latency_average(base::TimeDelta::FromMillisecondsD(latency_average_ms)),
  54         latency_stddev(base::TimeDelta::FromMillisecondsD(latency_stddev_ms)),
  55         out_of_order_rate(out_of_order_rate) {}
  56
  57   int bandwidth;
  58   int max_buffers;
  59   base::TimeDelta latency_average;
  60   base::TimeDelta latency_stddev;
  61   double out_of_order_rate;
  62 };
  63
  64 class FakeCursorShapeStub : public protocol::CursorShapeStub {
  65  public:
  66   FakeCursorShapeStub() {}
  67   ~FakeCursorShapeStub() override {}
  68
  69   // protocol::CursorShapeStub interface.
  70   void SetCursorShape(const protocol::CursorShapeInfo& cursor_shape) override{};
  71 };
  72
  73 class ProtocolPerfTest
  74     : public testing::Test,
  75       public testing::WithParamInterface<NetworkPerformanceParams>,
  76       public ClientUserInterface,
  77       public VideoRenderer,
  78       public protocol::VideoStub,
  79       public HostStatusObserver {
  80  public:
  81   ProtocolPerfTest()
  82       : host_thread_("host"),
  83         capture_thread_("capture"),
  84         encode_thread_("encode") {
  85     VideoFramePump::EnableTimestampsForTests();
  86     host_thread_.StartWithOptions(
  87         base::Thread::Options(base::MessageLoop::TYPE_IO, 0));
  88     capture_thread_.Start();
  89     encode_thread_.Start();
  90   }
  91
  92   virtual ~ProtocolPerfTest() {
  93     host_thread_.message_loop_proxy()->DeleteSoon(FROM_HERE, host_.release());
  94     host_thread_.message_loop_proxy()->DeleteSoon(FROM_HERE,
  95                                                   host_signaling_.release());
  96     message_loop_.RunUntilIdle();
  97   }
  98
  99   // ClientUserInterface interface.
 100   void OnConnectionState(protocol::ConnectionToHost::State state,
 101                          protocol::ErrorCode error) override {
 102     if (state == protocol::ConnectionToHost::CONNECTED) {
 103       client_connected_ = true;
 104       if (host_connected_)
 105         connecting_loop_->Quit();
 106     }
 107   }
 108   void OnConnectionReady(bool ready) override {}
 109   void OnRouteChanged(const std::string& channel_name,
 110                       const protocol::TransportRoute& route) override {}
 111   void SetCapabilities(const std::string& capabilities) override {}
 112   void SetPairingResponse(
 113       const protocol::PairingResponse& pairing_response) override {}
 114   void DeliverHostMessage(const protocol::ExtensionMessage& message) override {}
 115   protocol::ClipboardStub* GetClipboardStub() override { return nullptr; }
 116   protocol::CursorShapeStub* GetCursorShapeStub() override {
 117     return &cursor_shape_stub_;
 118   }
 119
 120   // VideoRenderer interface.
 121   void OnSessionConfig(const protocol::SessionConfig& config) override {}
 122   ChromotingStats* GetStats() override { return nullptr; }
 123   protocol::VideoStub* GetVideoStub() override { return this; }
 124
 125   // protocol::VideoStub interface.
 126   void ProcessVideoPacket(scoped_ptr<VideoPacket> video_packet,
 127                           const base::Closure& done) override {
 128     if (video_packet->data().empty()) {
 129       // Ignore keep-alive packets
 130       done.Run();
 131       return;
 132     }
 133
 134     last_video_packet_ = video_packet.Pass();
 135
 136     if (!on_frame_task_.is_null())
 137       on_frame_task_.Run();
 138
 139     done.Run();
 140   }
 141
 142   // HostStatusObserver interface.
 143   void OnClientConnected(const std::string& jid) override {
 144     message_loop_.PostTask(
 145         FROM_HERE,
 146         base::Bind(&ProtocolPerfTest::OnHostConnectedMainThread,
 147                    base::Unretained(this)));
 148   }
 149
 150  protected:
 151   void WaitConnected() {
 152     client_connected_ = false;
 153     host_connected_ = false;
 154
 155     connecting_loop_.reset(new base::RunLoop());
 156     connecting_loop_->Run();
 157
 158     ASSERT_TRUE(client_connected_ && host_connected_);
 159   }
 160
 161   void OnHostConnectedMainThread() {
 162     host_connected_ = true;
 163     if (client_connected_)
 164       connecting_loop_->Quit();
 165   }
 166
 167   void ReceiveFrame(base::TimeDelta* latency) {
 168     waiting_frames_loop_.reset(new base::RunLoop());
 169     on_frame_task_ = waiting_frames_loop_->QuitClosure();
 170     waiting_frames_loop_->Run();
 171
 172     if (latency) {
 173       base::TimeTicks timestamp =
 174           base::TimeTicks::FromInternalValue(last_video_packet_->timestamp());
 175       *latency = base::TimeTicks::Now() - timestamp;
 176     }
 177   }
 178
 179   void ReceiveFrames(int frames, base::TimeDelta* max_latency) {
 180     if (max_latency)
 181       *max_latency = base::TimeDelta();
 182
 183     for (int i = 0; i < frames; ++i) {
 184       base::TimeDelta latency;
 185
 186       ReceiveFrame(&latency);
 187
 188       if (max_latency && latency > *max_latency) {
 189         *max_latency = latency;
 190       }
 191     }
 192   }
 193
 194   // Creates test host and client and starts connection between them. Caller
 195   // should call WaitConnected() to wait until connection is established. The
 196   // host is started on |host_thread_| while the client works on the main
 197   // thread.
 198   void StartHostAndClient(protocol::ChannelConfig::Codec video_codec) {
 199     fake_network_dispatcher_ =  new FakeNetworkDispatcher();
 200
 201     client_signaling_.reset(new FakeSignalStrategy(kClientJid));
 202
 203     jingle_glue::JingleThreadWrapper::EnsureForCurrentMessageLoop();
 204
 205     protocol_config_ = protocol::CandidateSessionConfig::CreateDefault();
 206     protocol_config_->DisableAudioChannel();
 207     protocol_config_->mutable_video_configs()->clear();
 208     protocol_config_->mutable_video_configs()->push_back(
 209         protocol::ChannelConfig(
 210             protocol::ChannelConfig::TRANSPORT_STREAM, 2, video_codec));
 211
 212     host_thread_.message_loop_proxy()->PostTask(
 213         FROM_HERE,
 214         base::Bind(&ProtocolPerfTest::StartHost, base::Unretained(this)));
 215   }
 216
 217   void StartHost() {
 218     DCHECK(host_thread_.message_loop_proxy()->BelongsToCurrentThread());
 219
 220     jingle_glue::JingleThreadWrapper::EnsureForCurrentMessageLoop();
 221
 222     host_signaling_.reset(new FakeSignalStrategy(kHostJid));
 223     host_signaling_->ConnectTo(client_signaling_.get());
 224
 225     protocol::NetworkSettings network_settings(
 226         protocol::NetworkSettings::NAT_TRAVERSAL_OUTGOING);
 227
 228     scoped_ptr<FakePortAllocator> port_allocator(
 229         FakePortAllocator::Create(fake_network_dispatcher_));
 230     port_allocator->socket_factory()->SetBandwidth(GetParam().bandwidth,
 231                                                    GetParam().max_buffers);
 232     port_allocator->socket_factory()->SetLatency(GetParam().latency_average,
 233                                                  GetParam().latency_stddev);
 234     port_allocator->socket_factory()->set_out_of_order_rate(
 235         GetParam().out_of_order_rate);
 236     scoped_ptr<protocol::TransportFactory> host_transport_factory(
 237         new protocol::LibjingleTransportFactory(
 238             host_signaling_.get(),
 239             port_allocator.Pass(),
 240             network_settings));
 241
 242     scoped_ptr<protocol::SessionManager> session_manager(
 243         new protocol::JingleSessionManager(host_transport_factory.Pass()));
 244
 245     // Encoder runs on a separate thread, main thread is used for everything
 246     // else.
 247     host_.reset(new ChromotingHost(host_signaling_.get(),
 248                                    &desktop_environment_factory_,
 249                                    session_manager.Pass(),
 250                                    host_thread_.message_loop_proxy(),
 251                                    host_thread_.message_loop_proxy(),
 252                                    capture_thread_.message_loop_proxy(),
 253                                    encode_thread_.message_loop_proxy(),
 254                                    host_thread_.message_loop_proxy(),
 255                                    host_thread_.message_loop_proxy()));
 256
 257     base::FilePath certs_dir(net::GetTestCertsDirectory());
 258
 259     std::string host_cert;
 260     ASSERT_TRUE(base::ReadFileToString(
 261         certs_dir.AppendASCII("unittest.selfsigned.der"), &host_cert));
 262
 263     base::FilePath key_path = certs_dir.AppendASCII("unittest.key.bin");
 264     std::string key_string;
 265     ASSERT_TRUE(base::ReadFileToString(key_path, &key_string));
 266     std::string key_base64;
 267     base::Base64Encode(key_string, &key_base64);
 268     scoped_refptr<RsaKeyPair> key_pair = RsaKeyPair::FromString(key_base64);
 269     ASSERT_TRUE(key_pair.get());
 270
 271
 272     protocol::SharedSecretHash host_secret;
 273     host_secret.hash_function = protocol::AuthenticationMethod::NONE;
 274     host_secret.value = "123456";
 275     scoped_ptr<protocol::AuthenticatorFactory> auth_factory =
 276         protocol::Me2MeHostAuthenticatorFactory::CreateWithSharedSecret(
 277             true, kHostOwner, host_cert, key_pair, host_secret, nullptr);
 278     host_->SetAuthenticatorFactory(auth_factory.Pass());
 279
 280     host_->AddStatusObserver(this);
 281     host_->set_protocol_config(protocol_config_->Clone());
 282     host_->Start(kHostOwner);
 283
 284     message_loop_.PostTask(FROM_HERE,
 285                            base::Bind(&ProtocolPerfTest::StartClientAfterHost,
 286                                       base::Unretained(this)));
 287   }
 288
 289   void StartClientAfterHost() {
 290     client_signaling_->ConnectTo(host_signaling_.get());
 291
 292     protocol::NetworkSettings network_settings(
 293         protocol::NetworkSettings::NAT_TRAVERSAL_OUTGOING);
 294
 295     // Initialize client.
 296     client_context_.reset(
 297         new ClientContext(base::ThreadTaskRunnerHandle::Get()));
 298
 299     scoped_ptr<FakePortAllocator> port_allocator(
 300         FakePortAllocator::Create(fake_network_dispatcher_));
 301     port_allocator->socket_factory()->SetBandwidth(GetParam().bandwidth,
 302                                                    GetParam().max_buffers);
 303     port_allocator->socket_factory()->SetLatency(GetParam().latency_average,
 304                                                  GetParam().latency_stddev);
 305     port_allocator->socket_factory()->set_out_of_order_rate(
 306         GetParam().out_of_order_rate);
 307     scoped_ptr<protocol::TransportFactory> client_transport_factory(
 308         new protocol::LibjingleTransportFactory(
 309             client_signaling_.get(),
 310             port_allocator.Pass(),
 311             network_settings));
 312
 313     std::vector<protocol::AuthenticationMethod> auth_methods;
 314     auth_methods.push_back(protocol::AuthenticationMethod::Spake2(
 315         protocol::AuthenticationMethod::NONE));
 316     scoped_ptr<protocol::Authenticator> client_authenticator(
 317         new protocol::NegotiatingClientAuthenticator(
 318             std::string(),  // client_pairing_id
 319             std::string(),  // client_pairing_secret
 320             std::string(),  // authentication_tag
 321             base::Bind(&ProtocolPerfTest::FetchPin, base::Unretained(this)),
 322             nullptr,
 323             auth_methods));
 324     client_.reset(
 325         new ChromotingClient(client_context_.get(), this, this, nullptr));
 326     client_->SetProtocolConfigForTests(protocol_config_->Clone());
 327     client_->Start(
 328         client_signaling_.get(), client_authenticator.Pass(),
 329         client_transport_factory.Pass(), kHostJid, std::string());
 330   }
 331
 332   void FetchPin(
 333       bool pairing_supported,
 334       const protocol::SecretFetchedCallback& secret_fetched_callback) {
 335     secret_fetched_callback.Run("123456");
 336   }
 337
 338   base::MessageLoopForIO message_loop_;
 339
 340   scoped_refptr<FakeNetworkDispatcher> fake_network_dispatcher_;
 341
 342   base::Thread host_thread_;
 343   base::Thread capture_thread_;
 344   base::Thread encode_thread_;
 345   FakeDesktopEnvironmentFactory desktop_environment_factory_;
 346
 347   FakeCursorShapeStub cursor_shape_stub_;
 348
 349   scoped_ptr<protocol::CandidateSessionConfig> protocol_config_;
 350
 351   scoped_ptr<FakeSignalStrategy> host_signaling_;
 352   scoped_ptr<FakeSignalStrategy> client_signaling_;
 353
 354   scoped_ptr<ChromotingHost> host_;
 355   scoped_ptr<ClientContext> client_context_;
 356   scoped_ptr<ChromotingClient> client_;
 357
 358   scoped_ptr<base::RunLoop> connecting_loop_;
 359   scoped_ptr<base::RunLoop> waiting_frames_loop_;
 360
 361   bool client_connected_;
 362   bool host_connected_;
 363
 364   base::Closure on_frame_task_;
 365
 366   scoped_ptr<VideoPacket> last_video_packet_;
 367
 368   DISALLOW_COPY_AND_ASSIGN(ProtocolPerfTest);
 369 };
 370
 371 INSTANTIATE_TEST_CASE_P(
 372     NoDelay,
 373     ProtocolPerfTest,
 374     ::testing::Values(NetworkPerformanceParams(0, 0, 0, 0, 0.0)));
 375
 376 INSTANTIATE_TEST_CASE_P(
 377     HighLatency,
 378     ProtocolPerfTest,
 379     ::testing::Values(NetworkPerformanceParams(0, 0, 300, 30, 0.0),
 380                       NetworkPerformanceParams(0, 0, 30, 10, 0.0)));
 381
 382 INSTANTIATE_TEST_CASE_P(
 383     OutOfOrder,
 384     ProtocolPerfTest,
 385     ::testing::Values(NetworkPerformanceParams(0, 0, 2, 0, 0.01),
 386                       NetworkPerformanceParams(0, 0, 30, 1, 0.01),
 387                       NetworkPerformanceParams(0, 0, 30, 1, 0.1),
 388                       NetworkPerformanceParams(0, 0, 300, 20, 0.01),
 389                       NetworkPerformanceParams(0, 0, 300, 20, 0.1)));
 390
 391 INSTANTIATE_TEST_CASE_P(
 392     LimitedBandwidth,
 393     ProtocolPerfTest,
 394     ::testing::Values(
 395         // 100 MBps
 396         NetworkPerformanceParams(800000000, 800000000, 2, 1, 0.0),
 397         // 8 MBps
 398         NetworkPerformanceParams(1000000, 300000, 30, 5, 0.01),
 399         NetworkPerformanceParams(1000000, 2000000, 30, 5, 0.01),
 400         // 800 kBps
 401         NetworkPerformanceParams(100000, 30000, 130, 5, 0.01),
 402         NetworkPerformanceParams(100000, 200000, 130, 5, 0.01)));
 403
 404 TEST_P(ProtocolPerfTest, StreamFrameRate) {
 405   StartHostAndClient(protocol::ChannelConfig::CODEC_VP8);
 406   ASSERT_NO_FATAL_FAILURE(WaitConnected());
 407
 408   base::TimeDelta latency;
 409
 410   ReceiveFrame(&latency);
 411   LOG(INFO) << "First frame latency: " << latency.InMillisecondsF() << "ms";
 412   ReceiveFrames(20, nullptr);
 413
 414   base::TimeTicks started = base::TimeTicks::Now();
 415   ReceiveFrames(40, &latency);
 416   base::TimeDelta elapsed = base::TimeTicks::Now() - started;
 417   LOG(INFO) << "Frame rate: " << (40.0 / elapsed.InSecondsF());
 418   LOG(INFO) << "Maximum latency: " << latency.InMillisecondsF() << "ms";
 419 }
 420
 421 const int kIntermittentFrameSize = 100 * 1000;
 422
 423 // Frame generator that rewrites the whole screen every 60th frame. Should only
 424 // be used with the VERBATIM codec as the allocated frame may contain arbitrary
 425 // data.
 426 class IntermittentChangeFrameGenerator
 427     : public base::RefCountedThreadSafe<IntermittentChangeFrameGenerator> {
 428  public:
 429   IntermittentChangeFrameGenerator()
 430       : frame_index_(0) {}
 431
 432   scoped_ptr<webrtc::DesktopFrame> GenerateFrame(
 433       webrtc::DesktopCapturer::Callback* callback) {
 434     const int kWidth = 1000;
 435     const int kHeight = kIntermittentFrameSize / kWidth / 4;
 436
 437     bool fresh_frame = false;
 438     if (frame_index_ % 60 == 0 || !current_frame_) {
 439       current_frame_.reset(webrtc::SharedDesktopFrame::Wrap(
 440           new webrtc::BasicDesktopFrame(webrtc::DesktopSize(kWidth, kHeight))));
 441       fresh_frame = true;
 442     }
 443     ++frame_index_;
 444
 445     scoped_ptr<webrtc::DesktopFrame> result(current_frame_->Share());
 446     result->mutable_updated_region()->Clear();
 447     if (fresh_frame) {
 448       result->mutable_updated_region()->AddRect(
 449           webrtc::DesktopRect::MakeXYWH(0, 0, kWidth, kHeight));
 450     }
 451     return result.Pass();
 452   }
 453
 454  private:
 455   ~IntermittentChangeFrameGenerator() {}
 456   friend class base::RefCountedThreadSafe<IntermittentChangeFrameGenerator>;
 457
 458   int frame_index_;
 459   scoped_ptr<webrtc::SharedDesktopFrame> current_frame_;
 460
 461   DISALLOW_COPY_AND_ASSIGN(IntermittentChangeFrameGenerator);
 462 };
 463
 464 TEST_P(ProtocolPerfTest, IntermittentChanges) {
 465   desktop_environment_factory_.set_frame_generator(
 466       base::Bind(&IntermittentChangeFrameGenerator::GenerateFrame,
 467                  new IntermittentChangeFrameGenerator()));
 468
 469   StartHostAndClient(protocol::ChannelConfig::CODEC_VERBATIM);
 470   ASSERT_NO_FATAL_FAILURE(WaitConnected());
 471
 472   ReceiveFrame(nullptr);
 473
 474   base::TimeDelta expected = GetParam().latency_average;
 475   if (GetParam().bandwidth > 0) {
 476     expected += base::TimeDelta::FromSecondsD(kIntermittentFrameSize /
 477                                               GetParam().bandwidth);
 478   }
 479   LOG(INFO) << "Expected: " << expected.InMillisecondsF() << "ms";
 480
 481   base::TimeDelta sum;
 482
 483   const int kFrames = 5;
 484   for (int i = 0; i < kFrames; ++i) {
 485     base::TimeDelta latency;
 486     ReceiveFrame(&latency);
 487     LOG(INFO) << "Latency: " << latency.InMillisecondsF()
 488               << "ms Encode: " << last_video_packet_->encode_time_ms()
 489               << "ms Capture: " << last_video_packet_->capture_time_ms()
 490               << "ms";
 491     sum += latency;
 492   }
 493
 494   LOG(INFO) << "Average: " << (sum / kFrames).InMillisecondsF();
 495 }
 496
 497 }  // namespace remoting