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_.task_runner()->DeleteSoon(FROM_HERE, host_.release());
  94     host_thread_.task_runner()->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   protocol::VideoStub* GetVideoStub() override { return this; }
 123
 124   // protocol::VideoStub interface.
 125   void ProcessVideoPacket(scoped_ptr<VideoPacket> video_packet,
 126                           const base::Closure& done) override {
 127     if (video_packet->data().empty()) {
 128       // Ignore keep-alive packets
 129       done.Run();
 130       return;
 131     }
 132
 133     last_video_packet_ = video_packet.Pass();
 134
 135     if (!on_frame_task_.is_null())
 136       on_frame_task_.Run();
 137
 138     done.Run();
 139   }
 140
 141   // HostStatusObserver interface.
 142   void OnClientConnected(const std::string& jid) override {
 143     message_loop_.PostTask(
 144         FROM_HERE,
 145         base::Bind(&ProtocolPerfTest::OnHostConnectedMainThread,
 146                    base::Unretained(this)));
 147   }
 148
 149  protected:
 150   void WaitConnected() {
 151     client_connected_ = false;
 152     host_connected_ = false;
 153
 154     connecting_loop_.reset(new base::RunLoop());
 155     connecting_loop_->Run();
 156
 157     ASSERT_TRUE(client_connected_ && host_connected_);
 158   }
 159
 160   void OnHostConnectedMainThread() {
 161     host_connected_ = true;
 162     if (client_connected_)
 163       connecting_loop_->Quit();
 164   }
 165
 166   void ReceiveFrame(base::TimeDelta* latency) {
 167     waiting_frames_loop_.reset(new base::RunLoop());
 168     on_frame_task_ = waiting_frames_loop_->QuitClosure();
 169     waiting_frames_loop_->Run();
 170
 171     if (latency) {
 172       base::TimeTicks timestamp =
 173           base::TimeTicks::FromInternalValue(last_video_packet_->timestamp());
 174       *latency = base::TimeTicks::Now() - timestamp;
 175     }
 176   }
 177
 178   void ReceiveFrames(int frames, base::TimeDelta* max_latency) {
 179     if (max_latency)
 180       *max_latency = base::TimeDelta();
 181
 182     for (int i = 0; i < frames; ++i) {
 183       base::TimeDelta latency;
 184
 185       ReceiveFrame(&latency);
 186
 187       if (max_latency && latency > *max_latency) {
 188         *max_latency = latency;
 189       }
 190     }
 191   }
 192
 193   // Creates test host and client and starts connection between them. Caller
 194   // should call WaitConnected() to wait until connection is established. The
 195   // host is started on |host_thread_| while the client works on the main
 196   // thread.
 197   void StartHostAndClient(protocol::ChannelConfig::Codec video_codec) {
 198     fake_network_dispatcher_ =  new FakeNetworkDispatcher();
 199
 200     client_signaling_.reset(new FakeSignalStrategy(kClientJid));
 201
 202     jingle_glue::JingleThreadWrapper::EnsureForCurrentMessageLoop();
 203
 204     protocol_config_ = protocol::CandidateSessionConfig::CreateDefault();
 205     protocol_config_->DisableAudioChannel();
 206     protocol_config_->mutable_video_configs()->clear();
 207     protocol_config_->mutable_video_configs()->push_back(
 208         protocol::ChannelConfig(
 209             protocol::ChannelConfig::TRANSPORT_STREAM, 2, video_codec));
 210
 211     host_thread_.task_runner()->PostTask(
 212         FROM_HERE,
 213         base::Bind(&ProtocolPerfTest::StartHost, base::Unretained(this)));
 214   }
 215
 216   void StartHost() {
 217     DCHECK(host_thread_.task_runner()->BelongsToCurrentThread());
 218
 219     jingle_glue::JingleThreadWrapper::EnsureForCurrentMessageLoop();
 220
 221     host_signaling_.reset(new FakeSignalStrategy(kHostJid));
 222     host_signaling_->ConnectTo(client_signaling_.get());
 223
 224     protocol::NetworkSettings network_settings(
 225         protocol::NetworkSettings::NAT_TRAVERSAL_OUTGOING);
 226
 227     scoped_ptr<FakePortAllocator> port_allocator(
 228         FakePortAllocator::Create(fake_network_dispatcher_));
 229     port_allocator->socket_factory()->SetBandwidth(GetParam().bandwidth,
 230                                                    GetParam().max_buffers);
 231     port_allocator->socket_factory()->SetLatency(GetParam().latency_average,
 232                                                  GetParam().latency_stddev);
 233     port_allocator->socket_factory()->set_out_of_order_rate(
 234         GetParam().out_of_order_rate);
 235     scoped_ptr<protocol::TransportFactory> host_transport_factory(
 236         new protocol::LibjingleTransportFactory(
 237             host_signaling_.get(), port_allocator.Pass(), network_settings,
 238             protocol::TransportRole::SERVER));
 239
 240     scoped_ptr<protocol::SessionManager> session_manager(
 241         new protocol::JingleSessionManager(host_transport_factory.Pass()));
 242     session_manager->set_protocol_config(protocol_config_->Clone());
 243
 244     // Encoder runs on a separate thread, main thread is used for everything
 245     // else.
 246     host_.reset(new ChromotingHost(host_signaling_.get(),
 247                                    &desktop_environment_factory_,
 248                                    session_manager.Pass(),
 249                                    host_thread_.task_runner(),
 250                                    host_thread_.task_runner(),
 251                                    capture_thread_.task_runner(),
 252                                    encode_thread_.task_runner(),
 253                                    host_thread_.task_runner(),
 254                                    host_thread_.task_runner()));
 255
 256     base::FilePath certs_dir(net::GetTestCertsDirectory());
 257
 258     std::string host_cert;
 259     ASSERT_TRUE(base::ReadFileToString(
 260         certs_dir.AppendASCII("unittest.selfsigned.der"), &host_cert));
 261
 262     base::FilePath key_path = certs_dir.AppendASCII("unittest.key.bin");
 263     std::string key_string;
 264     ASSERT_TRUE(base::ReadFileToString(key_path, &key_string));
 265     std::string key_base64;
 266     base::Base64Encode(key_string, &key_base64);
 267     scoped_refptr<RsaKeyPair> key_pair = RsaKeyPair::FromString(key_base64);
 268     ASSERT_TRUE(key_pair.get());
 269
 270
 271     protocol::SharedSecretHash host_secret;
 272     host_secret.hash_function = protocol::AuthenticationMethod::NONE;
 273     host_secret.value = "123456";
 274     scoped_ptr<protocol::AuthenticatorFactory> auth_factory =
 275         protocol::Me2MeHostAuthenticatorFactory::CreateWithSharedSecret(
 276             true, kHostOwner, host_cert, key_pair, host_secret, nullptr);
 277     host_->SetAuthenticatorFactory(auth_factory.Pass());
 278
 279     host_->AddStatusObserver(this);
 280     host_->Start(kHostOwner);
 281
 282     message_loop_.PostTask(FROM_HERE,
 283                            base::Bind(&ProtocolPerfTest::StartClientAfterHost,
 284                                       base::Unretained(this)));
 285   }
 286
 287   void StartClientAfterHost() {
 288     client_signaling_->ConnectTo(host_signaling_.get());
 289
 290     protocol::NetworkSettings network_settings(
 291         protocol::NetworkSettings::NAT_TRAVERSAL_OUTGOING);
 292
 293     // Initialize client.
 294     client_context_.reset(
 295         new ClientContext(base::ThreadTaskRunnerHandle::Get()));
 296
 297     scoped_ptr<FakePortAllocator> port_allocator(
 298         FakePortAllocator::Create(fake_network_dispatcher_));
 299     port_allocator->socket_factory()->SetBandwidth(GetParam().bandwidth,
 300                                                    GetParam().max_buffers);
 301     port_allocator->socket_factory()->SetLatency(GetParam().latency_average,
 302                                                  GetParam().latency_stddev);
 303     port_allocator->socket_factory()->set_out_of_order_rate(
 304         GetParam().out_of_order_rate);
 305     scoped_ptr<protocol::TransportFactory> client_transport_factory(
 306         new protocol::LibjingleTransportFactory(
 307             client_signaling_.get(), port_allocator.Pass(), network_settings,
 308             protocol::TransportRole::CLIENT));
 309
 310     std::vector<protocol::AuthenticationMethod> auth_methods;
 311     auth_methods.push_back(protocol::AuthenticationMethod::Spake2(
 312         protocol::AuthenticationMethod::NONE));
 313     scoped_ptr<protocol::Authenticator> client_authenticator(
 314         new protocol::NegotiatingClientAuthenticator(
 315             std::string(),  // client_pairing_id
 316             std::string(),  // client_pairing_secret
 317             std::string(),  // authentication_tag
 318             base::Bind(&ProtocolPerfTest::FetchPin, base::Unretained(this)),
 319             nullptr,
 320             auth_methods));
 321     client_.reset(
 322         new ChromotingClient(client_context_.get(), this, this, nullptr));
 323     client_->set_protocol_config(protocol_config_->Clone());
 324     client_->Start(client_signaling_.get(), client_authenticator.Pass(),
 325                    client_transport_factory.Pass(), kHostJid, std::string());
 326   }
 327
 328   void FetchPin(
 329       bool pairing_supported,
 330       const protocol::SecretFetchedCallback& secret_fetched_callback) {
 331     secret_fetched_callback.Run("123456");
 332   }
 333
 334   base::MessageLoopForIO message_loop_;
 335
 336   scoped_refptr<FakeNetworkDispatcher> fake_network_dispatcher_;
 337
 338   base::Thread host_thread_;
 339   base::Thread capture_thread_;
 340   base::Thread encode_thread_;
 341   FakeDesktopEnvironmentFactory desktop_environment_factory_;
 342
 343   FakeCursorShapeStub cursor_shape_stub_;
 344
 345   scoped_ptr<protocol::CandidateSessionConfig> protocol_config_;
 346
 347   scoped_ptr<FakeSignalStrategy> host_signaling_;
 348   scoped_ptr<FakeSignalStrategy> client_signaling_;
 349
 350   scoped_ptr<ChromotingHost> host_;
 351   scoped_ptr<ClientContext> client_context_;
 352   scoped_ptr<ChromotingClient> client_;
 353
 354   scoped_ptr<base::RunLoop> connecting_loop_;
 355   scoped_ptr<base::RunLoop> waiting_frames_loop_;
 356
 357   bool client_connected_;
 358   bool host_connected_;
 359
 360   base::Closure on_frame_task_;
 361
 362   scoped_ptr<VideoPacket> last_video_packet_;
 363
 364  private:
 365   DISALLOW_COPY_AND_ASSIGN(ProtocolPerfTest);
 366 };
 367
 368 INSTANTIATE_TEST_CASE_P(
 369     NoDelay,
 370     ProtocolPerfTest,
 371     ::testing::Values(NetworkPerformanceParams(0, 0, 0, 0, 0.0)));
 372
 373 INSTANTIATE_TEST_CASE_P(
 374     HighLatency,
 375     ProtocolPerfTest,
 376     ::testing::Values(NetworkPerformanceParams(0, 0, 300, 30, 0.0),
 377                       NetworkPerformanceParams(0, 0, 30, 10, 0.0)));
 378
 379 INSTANTIATE_TEST_CASE_P(
 380     OutOfOrder,
 381     ProtocolPerfTest,
 382     ::testing::Values(NetworkPerformanceParams(0, 0, 2, 0, 0.01),
 383                       NetworkPerformanceParams(0, 0, 30, 1, 0.01),
 384                       NetworkPerformanceParams(0, 0, 30, 1, 0.1),
 385                       NetworkPerformanceParams(0, 0, 300, 20, 0.01),
 386                       NetworkPerformanceParams(0, 0, 300, 20, 0.1)));
 387
 388 INSTANTIATE_TEST_CASE_P(
 389     LimitedBandwidth,
 390     ProtocolPerfTest,
 391     ::testing::Values(
 392         // 100 MBps
 393         NetworkPerformanceParams(800000000, 800000000, 2, 1, 0.0),
 394         // 8 MBps
 395         NetworkPerformanceParams(1000000, 300000, 30, 5, 0.01),
 396         NetworkPerformanceParams(1000000, 2000000, 30, 5, 0.01),
 397         // 800 kBps
 398         NetworkPerformanceParams(100000, 30000, 130, 5, 0.01),
 399         NetworkPerformanceParams(100000, 200000, 130, 5, 0.01)));
 400
 401 TEST_P(ProtocolPerfTest, StreamFrameRate) {
 402   StartHostAndClient(protocol::ChannelConfig::CODEC_VP8);
 403   ASSERT_NO_FATAL_FAILURE(WaitConnected());
 404
 405   base::TimeDelta latency;
 406
 407   ReceiveFrame(&latency);
 408   LOG(INFO) << "First frame latency: " << latency.InMillisecondsF() << "ms";
 409   ReceiveFrames(20, nullptr);
 410
 411   base::TimeTicks started = base::TimeTicks::Now();
 412   ReceiveFrames(40, &latency);
 413   base::TimeDelta elapsed = base::TimeTicks::Now() - started;
 414   LOG(INFO) << "Frame rate: " << (40.0 / elapsed.InSecondsF());
 415   LOG(INFO) << "Maximum latency: " << latency.InMillisecondsF() << "ms";
 416 }
 417
 418 const int kIntermittentFrameSize = 100 * 1000;
 419
 420 // Frame generator that rewrites the whole screen every 60th frame. Should only
 421 // be used with the VERBATIM codec as the allocated frame may contain arbitrary
 422 // data.
 423 class IntermittentChangeFrameGenerator
 424     : public base::RefCountedThreadSafe<IntermittentChangeFrameGenerator> {
 425  public:
 426   IntermittentChangeFrameGenerator()
 427       : frame_index_(0) {}
 428
 429   scoped_ptr<webrtc::DesktopFrame> GenerateFrame(
 430       webrtc::DesktopCapturer::Callback* callback) {
 431     const int kWidth = 1000;
 432     const int kHeight = kIntermittentFrameSize / kWidth / 4;
 433
 434     bool fresh_frame = false;
 435     if (frame_index_ % 60 == 0 || !current_frame_) {
 436       current_frame_.reset(webrtc::SharedDesktopFrame::Wrap(
 437           new webrtc::BasicDesktopFrame(webrtc::DesktopSize(kWidth, kHeight))));
 438       fresh_frame = true;
 439     }
 440     ++frame_index_;
 441
 442     scoped_ptr<webrtc::DesktopFrame> result(current_frame_->Share());
 443     result->mutable_updated_region()->Clear();
 444     if (fresh_frame) {
 445       result->mutable_updated_region()->AddRect(
 446           webrtc::DesktopRect::MakeXYWH(0, 0, kWidth, kHeight));
 447     }
 448     return result.Pass();
 449   }
 450
 451  private:
 452   ~IntermittentChangeFrameGenerator() {}
 453   friend class base::RefCountedThreadSafe<IntermittentChangeFrameGenerator>;
 454
 455   int frame_index_;
 456   scoped_ptr<webrtc::SharedDesktopFrame> current_frame_;
 457
 458   DISALLOW_COPY_AND_ASSIGN(IntermittentChangeFrameGenerator);
 459 };
 460
 461 TEST_P(ProtocolPerfTest, IntermittentChanges) {
 462   desktop_environment_factory_.set_frame_generator(
 463       base::Bind(&IntermittentChangeFrameGenerator::GenerateFrame,
 464                  new IntermittentChangeFrameGenerator()));
 465
 466   StartHostAndClient(protocol::ChannelConfig::CODEC_VERBATIM);
 467   ASSERT_NO_FATAL_FAILURE(WaitConnected());
 468
 469   ReceiveFrame(nullptr);
 470
 471   base::TimeDelta expected = GetParam().latency_average;
 472   if (GetParam().bandwidth > 0) {
 473     expected += base::TimeDelta::FromSecondsD(kIntermittentFrameSize /
 474                                               GetParam().bandwidth);
 475   }
 476   LOG(INFO) << "Expected: " << expected.InMillisecondsF() << "ms";
 477
 478   base::TimeDelta sum;
 479
 480   const int kFrames = 5;
 481   for (int i = 0; i < kFrames; ++i) {
 482     base::TimeDelta latency;
 483     ReceiveFrame(&latency);
 484     LOG(INFO) << "Latency: " << latency.InMillisecondsF()
 485               << "ms Encode: " << last_video_packet_->encode_time_ms()
 486               << "ms Capture: " << last_video_packet_->capture_time_ms()
 487               << "ms";
 488     sum += latency;
 489   }
 490
 491   LOG(INFO) << "Average: " << (sum / kFrames).InMillisecondsF();
 492 }
 493
 494 }  // namespace remoting