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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "remoting/host/cast_extension_session.h" | 5 #include "remoting/host/cast_extension_session.h" |
| 6 | 6 |
| 7 #include "base/bind.h" | 7 #include "base/bind.h" |
| 8 #include "base/json/json_reader.h" | 8 #include "base/json/json_reader.h" |
| 9 #include "base/json/json_writer.h" | 9 #include "base/json/json_writer.h" |
| 10 #include "base/logging.h" | 10 #include "base/logging.h" |
| 11 #include "base/synchronization/waitable_event.h" | 11 #include "base/synchronization/waitable_event.h" |
| 12 #include "net/url_request/url_request_context_getter.h" | 12 #include "net/url_request/url_request_context_getter.h" |
| 13 #include "remoting/host/client_session.h" | 13 #include "remoting/host/client_session.h" |
| 14 #include "remoting/proto/control.pb.h" | 14 #include "remoting/proto/control.pb.h" |
| 15 #include "remoting/protocol/chromium_port_allocator_factory.h" | 15 #include "remoting/protocol/chromium_port_allocator.h" |
| 16 #include "remoting/protocol/client_stub.h" | 16 #include "remoting/protocol/client_stub.h" |
| 17 #include "remoting/protocol/webrtc_video_capturer_adapter.h" | 17 #include "remoting/protocol/webrtc_video_capturer_adapter.h" |
| 18 #include "third_party/libjingle/source/talk/app/webrtc/mediastreaminterface.h" | 18 #include "third_party/libjingle/source/talk/app/webrtc/mediastreaminterface.h" |
| 19 #include "third_party/libjingle/source/talk/app/webrtc/test/fakeconstraints.h" | 19 #include "third_party/libjingle/source/talk/app/webrtc/test/fakeconstraints.h" |
| 20 #include "third_party/libjingle/source/talk/app/webrtc/videosourceinterface.h" | 20 #include "third_party/libjingle/source/talk/app/webrtc/videosourceinterface.h" |
| 21 | 21 |
| 22 namespace remoting { | 22 namespace remoting { |
| 23 | 23 |
| 24 // Used as the type attribute of all Cast protocol::ExtensionMessages. | 24 // Used as the type attribute of all Cast protocol::ExtensionMessages. |
| 25 const char kExtensionMessageType[] = "cast_message"; | 25 const char kExtensionMessageType[] = "cast_message"; |
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| 43 const char kWebRtcSessionDescType[] = "type"; | 43 const char kWebRtcSessionDescType[] = "type"; |
| 44 const char kWebRtcSessionDescSDP[] = "sdp"; | 44 const char kWebRtcSessionDescSDP[] = "sdp"; |
| 45 const char kWebRtcSDPMid[] = "sdpMid"; | 45 const char kWebRtcSDPMid[] = "sdpMid"; |
| 46 const char kWebRtcSDPMLineIndex[] = "sdpMLineIndex"; | 46 const char kWebRtcSDPMLineIndex[] = "sdpMLineIndex"; |
| 47 | 47 |
| 48 // Media labels used over the PeerConnection. | 48 // Media labels used over the PeerConnection. |
| 49 const char kVideoLabel[] = "cast_video_label"; | 49 const char kVideoLabel[] = "cast_video_label"; |
| 50 const char kStreamLabel[] = "stream_label"; | 50 const char kStreamLabel[] = "stream_label"; |
| 51 | 51 |
| 52 // Default STUN server used to construct | 52 // Default STUN server used to construct |
| 53 // webrtc::PeerConnectionInterface::RTCConfiguration for the PeerConnection. | 53 // ChromiumPortAllocator for the PeerConnection. |
| 54 const char kDefaultStunURI[] = "stun:stun.l.google.com:19302"; | 54 const char kDefaultStunHost[] = "stun.l.google.com"; |
| 55 const int kDefaultStunPort = 19302; |
| 55 | 56 |
| 56 const char kWorkerThreadName[] = "CastExtensionSessionWorkerThread"; | 57 const char kWorkerThreadName[] = "CastExtensionSessionWorkerThread"; |
| 57 | 58 |
| 58 // Interval between each call to PollPeerConnectionStats(). | 59 // Interval between each call to PollPeerConnectionStats(). |
| 59 const int kStatsLogIntervalSec = 10; | 60 const int kStatsLogIntervalSec = 10; |
| 60 | 61 |
| 61 // Minimum frame rate for video streaming over the PeerConnection in frames per | 62 // Minimum frame rate for video streaming over the PeerConnection in frames per |
| 62 // second, added as a media constraint when constructing the video source for | 63 // second, added as a media constraint when constructing the video source for |
| 63 // the Peer Connection. | 64 // the Peer Connection. |
| 64 const int kMinFramesPerSecond = 5; | 65 const int kMinFramesPerSecond = 5; |
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| 474 worker_thread_wrapper_, signaling_thread_wrapper_, nullptr, nullptr, | 475 worker_thread_wrapper_, signaling_thread_wrapper_, nullptr, nullptr, |
| 475 nullptr); | 476 nullptr); |
| 476 | 477 |
| 477 if (!peer_conn_factory_.get()) { | 478 if (!peer_conn_factory_.get()) { |
| 478 CleanupPeerConnection(); | 479 CleanupPeerConnection(); |
| 479 return false; | 480 return false; |
| 480 } | 481 } |
| 481 | 482 |
| 482 VLOG(1) << "Created PeerConnectionFactory successfully."; | 483 VLOG(1) << "Created PeerConnectionFactory successfully."; |
| 483 | 484 |
| 484 webrtc::PeerConnectionInterface::IceServers servers; | |
| 485 webrtc::PeerConnectionInterface::IceServer server; | |
| 486 server.uri = kDefaultStunURI; | |
| 487 servers.push_back(server); | |
| 488 webrtc::PeerConnectionInterface::RTCConfiguration rtc_config; | |
| 489 rtc_config.servers = servers; | |
| 490 | |
| 491 // DTLS-SRTP is the preferred encryption method. If set to kValueFalse, the | 485 // DTLS-SRTP is the preferred encryption method. If set to kValueFalse, the |
| 492 // peer connection uses SDES. Disabling SDES as well will cause the peer | 486 // peer connection uses SDES. Disabling SDES as well will cause the peer |
| 493 // connection to fail to connect. | 487 // connection to fail to connect. |
| 494 // Note: For protection and unprotection of SRTP packets, the libjingle | 488 // Note: For protection and unprotection of SRTP packets, the libjingle |
| 495 // ENABLE_EXTERNAL_AUTH flag must not be set. | 489 // ENABLE_EXTERNAL_AUTH flag must not be set. |
| 496 webrtc::FakeConstraints constraints; | 490 webrtc::FakeConstraints constraints; |
| 497 constraints.AddMandatory(webrtc::MediaConstraintsInterface::kEnableDtlsSrtp, | 491 constraints.AddMandatory(webrtc::MediaConstraintsInterface::kEnableDtlsSrtp, |
| 498 webrtc::MediaConstraintsInterface::kValueTrue); | 492 webrtc::MediaConstraintsInterface::kValueTrue); |
| 499 | 493 |
| 500 rtc::scoped_refptr<webrtc::PortAllocatorFactoryInterface> | 494 rtc::scoped_ptr<protocol::ChromiumPortAllocator> port_allocator( |
| 501 port_allocator_factory = protocol::ChromiumPortAllocatorFactory::Create( | 495 protocol::ChromiumPortAllocator::Create(url_request_context_getter_, |
| 502 network_settings_, url_request_context_getter_); | 496 network_settings_) |
| 497 .release()); |
| 498 std::vector<rtc::SocketAddress> stun_hosts; |
| 499 stun_hosts.push_back(rtc::SocketAddress(kDefaultStunHost, kDefaultStunPort)); |
| 500 port_allocator->SetStunHosts(stun_hosts); |
| 503 | 501 |
| 502 webrtc::PeerConnectionInterface::RTCConfiguration rtc_config; |
| 504 peer_connection_ = peer_conn_factory_->CreatePeerConnection( | 503 peer_connection_ = peer_conn_factory_->CreatePeerConnection( |
| 505 rtc_config, &constraints, port_allocator_factory, nullptr, this); | 504 rtc_config, &constraints, port_allocator.Pass(), nullptr, this); |
| 506 | 505 |
| 507 if (!peer_connection_.get()) { | 506 if (!peer_connection_.get()) { |
| 508 CleanupPeerConnection(); | 507 CleanupPeerConnection(); |
| 509 return false; | 508 return false; |
| 510 } | 509 } |
| 511 | 510 |
| 512 VLOG(1) << "Created PeerConnection successfully."; | 511 VLOG(1) << "Created PeerConnection successfully."; |
| 513 | 512 |
| 514 create_session_desc_observer_ = | 513 create_session_desc_observer_ = |
| 515 CastCreateSessionDescriptionObserver::Create(this); | 514 CastCreateSessionDescriptionObserver::Create(this); |
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| 653 json.SetString(kWebRtcCandidate, candidate_str); | 652 json.SetString(kWebRtcCandidate, candidate_str); |
| 654 std::string json_str; | 653 std::string json_str; |
| 655 if (!base::JSONWriter::Write(json, &json_str)) { | 654 if (!base::JSONWriter::Write(json, &json_str)) { |
| 656 LOG(ERROR) << "Failed to serialize candidate message."; | 655 LOG(ERROR) << "Failed to serialize candidate message."; |
| 657 return; | 656 return; |
| 658 } | 657 } |
| 659 SendMessageToClient(kSubjectNewCandidate, json_str); | 658 SendMessageToClient(kSubjectNewCandidate, json_str); |
| 660 } | 659 } |
| 661 | 660 |
| 662 } // namespace remoting | 661 } // namespace remoting |
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