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| 1 | +#include "SctpDataChannelProviderInterfaceImpl.h" |
| 2 | + |
| 3 | +#include "p2p/base/dtls_transport.h" |
| 4 | + |
| 5 | +namespace tgcalls { |
| 6 | + |
| 7 | +SctpDataChannelProviderInterfaceImpl::SctpDataChannelProviderInterfaceImpl( |
| 8 | + cricket::DtlsTransport *transportChannel, |
| 9 | + bool isOutgoing, |
| 10 | + std::function<void(bool)> onStateChanged, |
| 11 | + std::function<void()> onTerminated, |
| 12 | + std::function<void(std::string const &)> onMessageReceived, |
| 13 | + std::shared_ptr<Threads> threads |
| 14 | +) : |
| 15 | +_threads(std::move(threads)), |
| 16 | +_onStateChanged(onStateChanged), |
| 17 | +_onTerminated(onTerminated), |
| 18 | +_onMessageReceived(onMessageReceived) { |
| 19 | + assert(_threads->getNetworkThread()->IsCurrent()); |
| 20 | + |
| 21 | + _sctpTransportFactory.reset(new cricket::SctpTransportFactory(_threads->getNetworkThread())); |
| 22 | + |
| 23 | + _sctpTransport = _sctpTransportFactory->CreateSctpTransport(transportChannel); |
| 24 | + _sctpTransport->SignalReadyToSendData.connect(this, &SctpDataChannelProviderInterfaceImpl::sctpReadyToSendData); |
| 25 | + _sctpTransport->SignalDataReceived.connect(this, &SctpDataChannelProviderInterfaceImpl::sctpDataReceived); |
| 26 | + _sctpTransport->SignalClosedAbruptly.connect(this, &SctpDataChannelProviderInterfaceImpl::sctpClosedAbruptly); |
| 27 | + |
| 28 | + webrtc::InternalDataChannelInit dataChannelInit; |
| 29 | + dataChannelInit.id = 0; |
| 30 | + dataChannelInit.open_handshake_role = isOutgoing ? webrtc::InternalDataChannelInit::kOpener : webrtc::InternalDataChannelInit::kAcker; |
| 31 | + _dataChannel = webrtc::SctpDataChannel::Create( |
| 32 | + this, |
| 33 | + "data", |
| 34 | + dataChannelInit, |
| 35 | + _threads->getNetworkThread(), |
| 36 | + _threads->getNetworkThread() |
| 37 | + ); |
| 38 | + |
| 39 | + _dataChannel->RegisterObserver(this); |
| 40 | +} |
| 41 | + |
| 42 | + |
| 43 | +SctpDataChannelProviderInterfaceImpl::~SctpDataChannelProviderInterfaceImpl() { |
| 44 | + assert(_threads->getNetworkThread()->IsCurrent()); |
| 45 | + |
| 46 | + _dataChannel->UnregisterObserver(); |
| 47 | + _dataChannel->Close(); |
| 48 | + _dataChannel = nullptr; |
| 49 | + |
| 50 | + _sctpTransport = nullptr; |
| 51 | + _sctpTransportFactory.reset(); |
| 52 | +} |
| 53 | + |
| 54 | +void SctpDataChannelProviderInterfaceImpl::sendDataChannelMessage(std::string const &message) { |
| 55 | + assert(_threads->getNetworkThread()->IsCurrent()); |
| 56 | + |
| 57 | + if (_isDataChannelOpen) { |
| 58 | + RTC_LOG(LS_INFO) << "Outgoing DataChannel message: " << message; |
| 59 | + |
| 60 | + webrtc::DataBuffer buffer(message); |
| 61 | + _dataChannel->Send(buffer); |
| 62 | + } else { |
| 63 | + RTC_LOG(LS_INFO) << "Could not send an outgoing DataChannel message: the channel is not open"; |
| 64 | + } |
| 65 | +} |
| 66 | + |
| 67 | +void SctpDataChannelProviderInterfaceImpl::OnStateChange() { |
| 68 | + assert(_threads->getNetworkThread()->IsCurrent()); |
| 69 | + |
| 70 | + auto state = _dataChannel->state(); |
| 71 | + bool isDataChannelOpen = state == webrtc::DataChannelInterface::DataState::kOpen; |
| 72 | + if (_isDataChannelOpen != isDataChannelOpen) { |
| 73 | + _isDataChannelOpen = isDataChannelOpen; |
| 74 | + _onStateChanged(_isDataChannelOpen); |
| 75 | + } |
| 76 | +} |
| 77 | + |
| 78 | +void SctpDataChannelProviderInterfaceImpl::OnMessage(const webrtc::DataBuffer& buffer) { |
| 79 | + assert(_threads->getNetworkThread()->IsCurrent()); |
| 80 | + |
| 81 | + if (!buffer.binary) { |
| 82 | + std::string messageText(buffer.data.data(), buffer.data.data() + buffer.data.size()); |
| 83 | + RTC_LOG(LS_INFO) << "Incoming DataChannel message: " << messageText; |
| 84 | + |
| 85 | + _onMessageReceived(messageText); |
| 86 | + } |
| 87 | +} |
| 88 | + |
| 89 | +void SctpDataChannelProviderInterfaceImpl::updateIsConnected(bool isConnected) { |
| 90 | + assert(_threads->getNetworkThread()->IsCurrent()); |
| 91 | + |
| 92 | + if (isConnected) { |
| 93 | + if (!_isSctpTransportStarted) { |
| 94 | + _isSctpTransportStarted = true; |
| 95 | + _sctpTransport->Start(5000, 5000, 262144); |
| 96 | + } |
| 97 | + } |
| 98 | +} |
| 99 | + |
| 100 | +void SctpDataChannelProviderInterfaceImpl::sctpReadyToSendData() { |
| 101 | + assert(_threads->getNetworkThread()->IsCurrent()); |
| 102 | + |
| 103 | + _dataChannel->OnTransportReady(true); |
| 104 | +} |
| 105 | + |
| 106 | +void SctpDataChannelProviderInterfaceImpl::sctpClosedAbruptly() { |
| 107 | + assert(_threads->getNetworkThread()->IsCurrent()); |
| 108 | + |
| 109 | + if (_onTerminated) { |
| 110 | + _onTerminated(); |
| 111 | + } |
| 112 | +} |
| 113 | + |
| 114 | +void SctpDataChannelProviderInterfaceImpl::sctpDataReceived(const cricket::ReceiveDataParams& params, const rtc::CopyOnWriteBuffer& buffer) { |
| 115 | + assert(_threads->getNetworkThread()->IsCurrent()); |
| 116 | + |
| 117 | + _dataChannel->OnDataReceived(params, buffer); |
| 118 | +} |
| 119 | + |
| 120 | +bool SctpDataChannelProviderInterfaceImpl::SendData(int sid, const webrtc::SendDataParams& params, const rtc::CopyOnWriteBuffer& payload, cricket::SendDataResult* result) { |
| 121 | + assert(_threads->getNetworkThread()->IsCurrent()); |
| 122 | + |
| 123 | + return _sctpTransport->SendData(sid, params, payload); |
| 124 | +} |
| 125 | + |
| 126 | +bool SctpDataChannelProviderInterfaceImpl::ConnectDataChannel(webrtc::SctpDataChannel *data_channel) { |
| 127 | + assert(_threads->getNetworkThread()->IsCurrent()); |
| 128 | + |
| 129 | + return true; |
| 130 | +} |
| 131 | + |
| 132 | +void SctpDataChannelProviderInterfaceImpl::DisconnectDataChannel(webrtc::SctpDataChannel* data_channel) { |
| 133 | + assert(_threads->getNetworkThread()->IsCurrent()); |
| 134 | + |
| 135 | + return; |
| 136 | +} |
| 137 | + |
| 138 | +void SctpDataChannelProviderInterfaceImpl::AddSctpDataStream(int sid) { |
| 139 | + assert(_threads->getNetworkThread()->IsCurrent()); |
| 140 | + |
| 141 | + _sctpTransport->OpenStream(sid); |
| 142 | +} |
| 143 | + |
| 144 | +void SctpDataChannelProviderInterfaceImpl::RemoveSctpDataStream(int sid) { |
| 145 | + assert(_threads->getNetworkThread()->IsCurrent()); |
| 146 | + |
| 147 | + _threads->getNetworkThread()->Invoke<void>(RTC_FROM_HERE, [this, sid]() { |
| 148 | + _sctpTransport->ResetStream(sid); |
| 149 | + }); |
| 150 | +} |
| 151 | + |
| 152 | +bool SctpDataChannelProviderInterfaceImpl::ReadyToSendData() const { |
| 153 | + assert(_threads->getNetworkThread()->IsCurrent()); |
| 154 | + |
| 155 | + return _sctpTransport->ReadyToSendData(); |
| 156 | +} |
| 157 | + |
| 158 | +} |
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