public async Task SctpError()
{
// Setup
var config = new PeerConnectionConfiguration();
var pc1 = new PeerConnection();
var pc2 = new PeerConnection();
await pc1.InitializeAsync(config);
await pc2.InitializeAsync(config);
pc1.LocalSdpReadytoSend += async(string type, string sdp) =>
{
await pc2.SetRemoteDescriptionAsync(type, sdp);
if (type == "offer")
{
pc2.CreateAnswer();
}
};
pc2.LocalSdpReadytoSend += async(string type, string sdp) =>
{
await pc1.SetRemoteDescriptionAsync(type, sdp);
if (type == "offer")
{
pc1.CreateAnswer();
}
};
pc1.IceCandidateReadytoSend += (string candidate, int sdpMlineindex, string sdpMid)
=> pc2.AddIceCandidate(sdpMid, sdpMlineindex, candidate);
pc2.IceCandidateReadytoSend += (string candidate, int sdpMlineindex, string sdpMid)
=> pc1.AddIceCandidate(sdpMid, sdpMlineindex, candidate);
// Connect
{
var c1 = new ManualResetEventSlim(false);
var c2 = new ManualResetEventSlim(false);
pc1.Connected += () => c1.Set();
pc2.Connected += () => c2.Set();
Assert.True(pc1.CreateOffer());
Assert.True(c1.Wait(TimeSpan.FromSeconds(60.0)));
Assert.True(c2.Wait(TimeSpan.FromSeconds(60.0)));
Assert.True(pc1.IsConnected);
Assert.True(pc1.IsConnected);
}
// Try to add a data channel. This should fail because SCTP was not negotiated.
Assert.ThrowsAsync <SctpNotNegotiatedException>(async() => await pc1.AddDataChannelAsync("dummy", false, false));
Assert.ThrowsAsync <SctpNotNegotiatedException>(async() => await pc1.AddDataChannelAsync(42, "dummy", false, false));
// Clean-up
pc1.Close();
pc1.Dispose();
pc2.Close();
pc2.Dispose();
}
/// <summary>
/// Initialize the peer connection.
/// </summary>
/// <returns>A task that completes once the peer connection is ready to be used.</returns>
public async Task InitializePeerConnectionAsync()
{
Logger.Log("Initializing the peer connection...");
// Cannot run in UI thread on UWP because this will initialize the global factory
// (first library call) which needs to be done on a background thread.
await ThreadHelper.RunOnWorkerThread(() => Library.ShutdownOptions = Library.ShutdownOptionsFlags.LogLiveObjects);
// Initialize the native peer connection object
try
{
var config = new PeerConnectionConfiguration
{
SdpSemantic = _sdpSemantic,
IceServers = new List <IceServer> {
_iceServer
}
};
await _peerConnection.InitializeAsync(config);
RaisePropertyChanged("IsPeerInitialized");
}
catch (Exception ex)
{
Logger.Log($"WebRTC native plugin init failed: {ex.Message}");
throw ex;
}
Logger.Log("Peer connection initialized.");
OnPeerInitialized();
//using (_sessionViewModel.GetNegotiationDeferral())
{
//// As a convenience, add 1 audio and 1 video transceivers
//// TODO - make that more flexible
//AddPendingTransceiver(MediaKind.Audio, "audio_transceiver_0");
//AddPendingTransceiver(MediaKind.Video, "video_transceiver_1");
// It is CRUCIAL to add any data channel BEFORE the SDP offer is sent, if data channels are
// to be used at all. Otherwise the SCTP will not be negotiated, and then all channels will
// stay forever in the kConnecting state.
// https://stackoverflow.com/questions/43788872/how-are-data-channels-negotiated-between-two-peers-with-webrtc
await _peerConnection.AddDataChannelAsync(ChatChannelID, "chat", true, true);
}
//_videoPlayer.CurrentStateChanged += OnMediaStateChanged;
//_videoPlayer.MediaOpened += OnMediaOpened;
//_videoPlayer.MediaFailed += OnMediaFailed;
//_videoPlayer.MediaEnded += OnMediaEnded;
//_videoPlayer.RealTimePlayback = true;
//_videoPlayer.AutoPlay = false;
// Bind the XAML UI control (videoPlayerElement) to the MediaFoundation rendering pipeline (_videoPlayer)
// so that the former can render in the UI the video frames produced in the background by the latter.
//videoPlayerElement.SetMediaPlayer(_videoPlayer);
}
/// <summary>
/// Main UI thread callback on WebRTC native plugin initialized.
/// </summary>
private void OnPluginPostInit()
{
PluginInitialized = true;
LogMessage("WebRTC native plugin initialized.");
// It is CRUCIAL to add any data channel BEFORE the SDP offer is sent, if data channels are
// to be used at all. Otherwise the SCTP will not be negotiated, and then all channels will
// stay forever in the kConnecting state.
// https://stackoverflow.com/questions/43788872/how-are-data-channels-negotiated-between-two-peers-with-webrtc
_peerConnection.AddDataChannelAsync(ChatChannelID, "chat", true, true).ContinueWith((prevTask) =>
{
if (prevTask.Exception != null)
{
throw prevTask.Exception;
}
var newDataChannel = prevTask.Result;
RunOnMainThread(() =>
{
_chatDataChannel = newDataChannel;
_chatDataChannel.MessageReceived += ChatMessageReceived;
chatInputBox.IsEnabled = true;
chatSendButton.IsEnabled = true;
});
});
createOfferButton.IsEnabled = true;
// Do not allow starting the local video before the MediaElement told us it was
// safe to do so (see OnMediaOpened). Otherwise Play() will silently fail.
startLocalVideo.IsEnabled = false;
localVideoPlayer.CurrentStateChanged += OnMediaStateChanged;
localVideoPlayer.MediaOpened += OnMediaOpened;
localVideoPlayer.MediaFailed += OnMediaFailed;
localVideoPlayer.MediaEnded += OnMediaEnded;
localVideoPlayer.RealTimePlayback = true;
localVideoPlayer.AutoPlay = false;
localVideoSource = CreateVideoStreamSource(640, 480); //< TODO width,height
localVideoPlayer.Source = MediaSource.CreateFromMediaStreamSource(localVideoSource);
remoteVideoPlayer.CurrentStateChanged += OnMediaStateChanged;
remoteVideoPlayer.MediaOpened += OnMediaOpened;
remoteVideoPlayer.MediaFailed += OnMediaFailed;
remoteVideoPlayer.MediaEnded += OnMediaEnded;
remoteVideoSource = CreateVideoStreamSource(640, 480); //< TODO width,height
remoteVideoPlayer.Source = MediaSource.CreateFromMediaStreamSource(remoteVideoSource);
// Bind the XAML UI control (localVideo) to the MediaFoundation rendering pipeline (localVideoPlayer)
// so that the former can render in the UI the video frames produced in the background by the later.
localVideo.SetMediaPlayer(localVideoPlayer);
remoteVideo.SetMediaPlayer(remoteVideoPlayer);
}
public async Task Init(IceServerModel[] iceServers)
{
Logger.Debug("Starting WebRTC connection.");
IceServers = iceServers;
PeerSession = new PeerConnection();
var iceList = IceServers.Select(x => new IceServer()
{
Urls = { x.Url },
TurnPassword = x.TurnPassword ?? string.Empty,
TurnUserName = x.TurnUsername ?? string.Empty
}).ToList();
var config = new PeerConnectionConfiguration()
{
IceServers = iceList
};
await PeerSession.InitializeAsync(config);
PeerSession.LocalSdpReadytoSend += PeerSession_LocalSdpReadytoSend;;
PeerSession.Connected += PeerConnection_Connected;
PeerSession.IceStateChanged += PeerConnection_IceStateChanged;
PeerSession.IceCandidateReadytoSend += PeerSession_IceCandidateReadytoSend;;
CaptureChannel = await PeerSession.AddDataChannelAsync("ScreenCapture", true, true);
CaptureChannel.BufferingChanged += DataChannel_BufferingChanged;
CaptureChannel.MessageReceived += CaptureChannel_MessageReceived;
CaptureChannel.StateChanged += CaptureChannel_StateChanged;
VideoSource = ExternalVideoTrackSource.CreateFromArgb32Callback(GetCaptureFrame);
Transceiver = PeerSession.AddTransceiver(MediaKind.Video);
PeerSession.CreateOffer();
}
/// <summary>
/// Initialize the peer connection.
/// </summary>
/// <returns>A task that completes once the peer connection is ready to be used.</returns>
public async Task InitializePeerConnectionAsync()
{
Logger.Log("Initializing the peer connection...");
// Cannot run in UI thread on UWP because this will initialize the global factory
// (first library call) which needs to be done on a background thread.
await ThreadHelper.RunOnWorkerThread(() => Library.ShutdownOptions = Library.ShutdownOptionsFlags.LogLiveObjects);
// Initialize the native peer connection object
try
{
var config = new PeerConnectionConfiguration
{
SdpSemantic = _sdpSemantic,
IceServers = new List <IceServer> {
_iceServer
}
};
await _peerConnection.InitializeAsync(config);
RaisePropertyChanged("IsPeerInitialized");
}
catch (Exception ex)
{
Logger.Log($"WebRTC native plugin init failed: {ex.Message}");
throw ex;
}
Logger.Log("Peer connection initialized.");
OnPeerInitialized();
// It is CRUCIAL to add any data channel BEFORE the SDP offer is sent, if data channels are
// to be used at all. Otherwise the SCTP will not be negotiated, and then all channels will
// stay forever in the kConnecting state.
// https://stackoverflow.com/questions/43788872/how-are-data-channels-negotiated-between-two-peers-with-webrtc
await _peerConnection.AddDataChannelAsync(ChatChannelID, "chat", true, true);
//_videoPlayer.CurrentStateChanged += OnMediaStateChanged;
//_videoPlayer.MediaOpened += OnMediaOpened;
//_videoPlayer.MediaFailed += OnMediaFailed;
//_videoPlayer.MediaEnded += OnMediaEnded;
//_videoPlayer.RealTimePlayback = true;
//_videoPlayer.AutoPlay = false;
// Bind the XAML UI control (videoPlayerElement) to the MediaFoundation rendering pipeline (_videoPlayer)
// so that the former can render in the UI the video frames produced in the background by the latter.
//videoPlayerElement.SetMediaPlayer(_videoPlayer);
//// Uncomment to initialize local transceivers and tracks.
//if (Utils.IsFirstInstance())
//{
// // Add transceivers
// var transceiverA = AddTransceiver(MediaKind.Audio,
// new TransceiverInitSettings { Name = "audio_transceiver" });
// var transceiverV = AddTransceiver(MediaKind.Video,
// new TransceiverInitSettings { Name = "video_transceiver", });
// // Add audio track
// var sourceA = await DeviceAudioTrackSource.CreateAsync(new LocalAudioDeviceInitConfig());
// var trackA = LocalAudioTrack.CreateFromSource(sourceA,
// new LocalAudioTrackInitConfig { trackName = "local_audio" });
// AddAudioTrack(trackA, "Audio Device");
// // Add the track to the transceiver.
// {
// var transceiverVM = Transceivers.First(t => t.Transceiver == transceiverA);
// var trackVM = transceiverVM.AvailableSenders.Last();
// transceiverVM.Sender = trackVM;
// }
// // Add video track
// var sourceV = await DeviceVideoTrackSource.CreateAsync(
// new LocalVideoDeviceInitConfig
// {
// videoDevice = new VideoCaptureDevice
// {
// id = @"<insert_device_id>"
// },
// videoProfileId = string.Empty,
// width = 640,
// height = 480,
// framerate = 30
// });
// // Crate the track
// var trackV = LocalVideoTrack.CreateFromSource(sourceV,
// new LocalVideoTrackInitConfig { trackName = "local_video" });
// AddVideoTrack(trackV, "Video Device");
// // Add the track to the transceiver.
// {
// var transceiverVM = Transceivers.First(t => t.Transceiver == transceiverV);
// var trackVM = transceiverVM.AvailableSenders.Last();
// transceiverVM.Sender = trackVM;
// }
//}
}
public async Task InBand()
{
// Setup
var config = new PeerConnectionConfiguration();
var pc1 = new PeerConnection();
var pc2 = new PeerConnection();
await pc1.InitializeAsync(config);
await pc2.InitializeAsync(config);
pc1.LocalSdpReadytoSend += (string type, string sdp) =>
{
pc2.SetRemoteDescription(type, sdp);
if (type == "offer")
{
pc2.CreateAnswer();
}
};
pc2.LocalSdpReadytoSend += (string type, string sdp) =>
{
pc1.SetRemoteDescription(type, sdp);
if (type == "offer")
{
pc1.CreateAnswer();
}
};
pc1.IceCandidateReadytoSend += (string candidate, int sdpMlineindex, string sdpMid)
=> pc2.AddIceCandidate(sdpMid, sdpMlineindex, candidate);
pc2.IceCandidateReadytoSend += (string candidate, int sdpMlineindex, string sdpMid)
=> pc1.AddIceCandidate(sdpMid, sdpMlineindex, candidate);
// Add dummy out-of-band data channel to force SCTP negotiating.
// Otherwise after connecting AddDataChannelAsync() will fail.
await pc1.AddDataChannelAsync(42, "dummy", false, false);
await pc2.AddDataChannelAsync(42, "dummy", false, false);
// Connect
{
var c1 = new ManualResetEventSlim(false);
var c2 = new ManualResetEventSlim(false);
pc1.Connected += () => c1.Set();
pc2.Connected += () => c2.Set();
Assert.True(pc1.CreateOffer());
Assert.True(c1.Wait(TimeSpan.FromSeconds(60.0)));
Assert.True(c2.Wait(TimeSpan.FromSeconds(60.0)));
Assert.True(pc1.IsConnected);
Assert.True(pc1.IsConnected);
}
// Negotiate data channel in-band
DataChannel data1 = null;
DataChannel data2 = null;
{
var c2 = new ManualResetEventSlim(false);
pc2.DataChannelAdded += (DataChannel channel) =>
{
data2 = channel;
c2.Set();
};
data1 = await pc1.AddDataChannelAsync("test_data_channel", true, true);
Assert.IsNotNull(data1);
Assert.True(c2.Wait(TimeSpan.FromSeconds(60.0)));
Assert.IsNotNull(data2);
Assert.AreEqual(data1.Label, data2.Label);
// Do not test DataChannel.ID; at this point for in-band channels the ID has not
// been agreed upon with the remote peer yet.
}
// Send data
{
var c2 = new ManualResetEventSlim(false);
string sentText = "Some sample text";
byte[] msg = Encoding.UTF8.GetBytes(sentText);
data2.MessageReceived += (byte[] _msg) =>
{
var receivedText = Encoding.UTF8.GetString(_msg);
Assert.AreEqual(sentText, receivedText);
c2.Set();
};
data1.SendMessage(msg);
Assert.True(c2.Wait(TimeSpan.FromSeconds(60.0)));
}
// Clean-up
pc1.Close();
pc1.Dispose();
pc2.Close();
pc2.Dispose();
}
public async Task SetupAsync(Signaler signaler, bool isServer, uint clientNodeId = 0)
{
await pc.InitializeAsync(new PeerConnectionConfiguration {
IceServers = new List <IceServer> {
new IceServer {
Urls = { signaler.IceServerUrl }
}
}
});
var tcs = new TaskCompletionSource <bool>();
// Do signaling
// https://microsoft.github.io/MixedReality-WebRTC/manual/cs/cs-signaling.html
// https://microsoft.github.io/MixedReality-WebRTC/manual/cs/helloworld-cs-signaling-core3.html
pc.LocalSdpReadytoSend += (SdpMessage sdpMessage) => {
// ここはawaitではなくWaitにしないとSocketが切れる．スレッドセーフ関係?
signaler.SendSdpAsync(sdpMessage.Type == SdpMessageType.Offer, sdpMessage.Content, clientNodeId).Wait();
};
pc.IceCandidateReadytoSend += (IceCandidate candidate) => {
signaler.SendIceAsync(candidate.SdpMid, candidate.SdpMlineIndex, candidate.Content, clientNodeId).Wait();
};
pc.IceStateChanged += (IceConnectionState state) => {
Logger.Debug("Connection", $"ICE state changed to {state}");
// https://microsoft.github.io/MixedReality-WebRTC/versions/release/2.0/api/Microsoft.MixedReality.WebRTC.IceConnectionState.html
if (state == IceConnectionState.Connected)
{
Connected = true;
}
if (state == IceConnectionState.Closed || state == IceConnectionState.Disconnected || state == IceConnectionState.Failed)
{
Connected = false;
OnDisconnect();
}
if (!isServer && state == IceConnectionState.Failed)
{
tcs.SetException(new ConnectionException("Failed to establish a WebRTC connection"));
}
};
signaler.SdpReceived += async(bool isOffer, string sdp, uint cid) => {
if (isServer && cid != clientNodeId)
{
// ignore messages for other clients
return;
}
await pc.SetRemoteDescriptionAsync(new SdpMessage {
Type = isOffer ? SdpMessageType.Offer : SdpMessageType.Answer,
Content = sdp
});
if (isOffer)
{
pc.CreateAnswer();
}
};
signaler.IceReceived += (string sdpMid, int sdpMLineIndex, string candidate, uint cid) => {
if (isServer && cid != clientNodeId)
{
// ignore messages for other clients
return;
}
pc.AddIceCandidate(new IceCandidate {
SdpMid = sdpMid,
SdpMlineIndex = sdpMLineIndex,
Content = candidate
});
//Logger.Write((isServer ? "Server: " : "Client: ") + $"{sdpMid} {sdpMLineIndex} {candidate}");
};
if (isServer)
{
TaskCompletionSource <DataChannel>[] completionSources = channelTypes.Select(
_ => new TaskCompletionSource <DataChannel>()
).ToArray();
pc.DataChannelAdded += (dc) => {
foreach (var type in channelTypes)
{
if (dc.Label == channelLabels[(int)type])
{
completionSources[(int)type].SetResult(dc);
}
}
};
Logger.Debug("Connection", "Server is ready for signaling");
await signaler.NotifyReadyAsync(clientNodeId);
Logger.Debug("Connection", "Server: Waiting for DC");
foreach (var type in channelTypes)
{
channels[(int)type] = await completionSources[(int)type].Task;
}
}
else
{
// Define channels
// Sync channel (unreliable)
channels[(int)ChannelType.Sync] = await pc.AddDataChannelAsync(
channelLabels[(int)ChannelType.Sync], ordered : false, reliable : false);
// Message channel (reliable but order is not guaranteed)
channels[(int)ChannelType.Control] = await pc.AddDataChannelAsync(
channelLabels[(int)ChannelType.Control], ordered : false, reliable : true);
// Blob channel (reliable and ordered)
channels[(int)ChannelType.Blob] = await pc.AddDataChannelAsync(
channelLabels[(int)ChannelType.Blob], ordered : true, reliable : true);
// Audio channel (unreliable)
channels[(int)ChannelType.Audio] = await pc.AddDataChannelAsync(
channelLabels[(int)ChannelType.Audio], ordered : false, reliable : false);
Logger.Debug("Connection", "Client: Waiting for server ready");
await signaler.WaitReadyAsync();
pc.CreateOffer();
}
foreach (var(dc, idx) in channels.Select((dc, idx) => (dc, idx)))
{
dc.MessageReceived += (data) => {
threadChannels[idx].Writer.TryWrite(data); // Always succeeds because the Channel is unbounded
};
dc.StateChanged += () => {
Logger.Debug("Connection", $"DC {(ChannelType)idx} state changed to {dc.State}");
if (dc.State == DataChannel.ChannelState.Closing)
{
// Disconnect handling
Connected = false;
}
};
}
//await Task.Delay(5000);
if (!isServer)
{
// FIXME: Waiting pc.Connected not work in server (cannot establish a connection to client)
// In server, should wait until all DataChannels are added?
pc.Connected += () => {
tcs.SetResult(true);
};
await tcs.Task;
}
}
private async void Window_Initialized(object sender, EventArgs e)
{
_peerConnection = new PeerConnection();
var config = new PeerConnectionConfiguration
{
IceServers = new List <IceServer> {
new IceServer {
Urls = { "turn:35.193.0.31:3478" }, TurnPassword = "******", TurnUserName = "******"
}
}
};
_peerConnection.Connected += () =>
{
Debugger.Log(0, "", "Peerconnection: DONE");
};
_peerConnection.IceStateChanged += (IceConnectionState newState) =>
{
Debugger.Log(0, "", $"ICE state: {newState}\n");
};
await _peerConnection.InitializeAsync(config);
_dc = await _peerConnection.AddDataChannelAsync(14, "vzgo", true, true);
Debugger.Log(0, "", "Peer connection initialized successfully.\n");
_peerConnection.LocalSdpReadytoSend += Peer_LocalSdpReadytoSendAsync;
_peerConnection.IceCandidateReadytoSend += Peer_IceCandidateReadytoSend;
_hubConnection = new HubConnectionBuilder()
.WithUrl(new Uri(SignallerConstants.SignallerUrl))
.AddJsonProtocol()
.WithAutomaticReconnect(new[] { TimeSpan.Zero, TimeSpan.Zero, TimeSpan.FromSeconds(10) })
.Build();
_hubConnection.On <string>("Message", (message) =>
{
var msg = JsonConvert.DeserializeObject <SignallingMessage>(message);
switch (msg.MessageType)
{
case SignallingMessage.WireMessageType.Offer:
_peerConnection.SetRemoteDescription("offer", msg.Data);
_peerConnection.CreateAnswer();
break;
case SignallingMessage.WireMessageType.Answer:
_peerConnection.SetRemoteDescription("answer", msg.Data);
break;
case SignallingMessage.WireMessageType.Ice:
var parts = msg.Data.Split(new string[] { msg.IceDataSeparator },
StringSplitOptions.RemoveEmptyEntries);
// Note the inverted arguments for historical reasons.
// 'candidate' is last in AddIceCandidate(), but first in the message.
string sdpMid = parts[2];
int sdpMlineindex = int.Parse(parts[1]);
string candidate = parts[0];
_peerConnection.AddIceCandidate(sdpMid, sdpMlineindex, candidate);
break;
}
});
await _hubConnection.StartAsync();
await _hubConnection.InvokeAsync("JoinRoom", SignallerConstants.RoomName);
}
static async Task Main(string[] args)
{
DataChannel dataChannel = null;
try
{
// Create a new peer connection automatically disposed at the end of the program
using var pc = new PeerConnection();
// Initialize the connection with a STUN server to allow remote access
var config = new PeerConnectionConfiguration
{
IceServers = new List <IceServer> {
new IceServer {
Urls = { "stun:stun.l.google.com:19302" }
}
}
};
await pc.InitializeAsync(config);
Console.WriteLine("Peer connection initialized.");
Console.WriteLine("Opening data channel");
dataChannel = await pc.AddDataChannelAsync("data", true, true);
// Setup signaling
Console.WriteLine("Starting signaling...");
var signaler = new NamedPipeSignaler.NamedPipeSignaler(pc, "testpipe");
signaler.SdpMessageReceived += (string type, string sdp) => {
pc.SetRemoteDescription(type, sdp);
if (type == "offer")
{
pc.CreateAnswer();
}
};
signaler.IceCandidateReceived += (string sdpMid, int sdpMlineindex, string candidate) => {
pc.AddIceCandidate(sdpMid, sdpMlineindex, candidate);
};
await signaler.StartAsync();
// Start peer connection
pc.Connected += () => { Console.WriteLine("PeerConnection: connected."); };
pc.IceStateChanged += (IceConnectionState newState) => { Console.WriteLine($"ICE state: {newState}"); };
pc.DataChannelAdded += (DataChannel c) =>
{
Console.WriteLine("DataChannel added");
c.MessageReceived += (byte[] _msg) =>
{
Console.WriteLine("received {0} bytes", _msg.Length);
};
};
if (signaler.IsClient)
{
Console.WriteLine("Connecting to remote peer...");
pc.CreateOffer();
}
else
{
Console.WriteLine("Waiting for offer from remote peer...");
}
Console.WriteLine("Press a 'S' to send data. 'Esc' to exit ...");
ConsoleKeyInfo key;
while ((key = Console.ReadKey(true)).Key != ConsoleKey.Escape)
{
if (key.Key == ConsoleKey.S)
{
Console.WriteLine("Sending data");
dataChannel.SendMessage(new byte[3000]);
}
}
signaler.Stop();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
Console.WriteLine("Program termined.");
}
static async Task Main()
{
try
{
Console.WriteLine("Starting...");
//create and Initialize capture object to record audio
var waveFormat = new WaveFormat(44100, 32, 2, AudioEncoding.MpegLayer3);
WasapiCapture capture = new WasapiCapture(true, AudioClientShareMode.Shared, 100, waveFormat);
//initialize the selected device for recording
capture.Initialize();
//fill ice servers here
List <string> urls = new List <string>();
using var pc = new PeerConnection();
var config = new PeerConnectionConfiguration
{
IceServers = new List <IceServer> {
new IceServer {
Urls = urls,
}
}
,
BundlePolicy = BundlePolicy.MaxBundle
};
await pc.InitializeAsync(config);
Console.WriteLine("Peer connection initialized.");
//create audio transceiver
Transceiver transceiver = pc.AddTransceiver(MediaKind.Audio);
transceiver.DesiredDirection = Transceiver.Direction.ReceiveOnly;
Console.WriteLine("Create audio transceiver ...");
DataChannel chanel = await pc.AddDataChannelAsync("Data", true, true, cancellationToken : default);
string url = "";
WebSocketSharp.WebSocket signaling = new WebSocket(url);
signaling.SslConfiguration.EnabledSslProtocols = System.Security.Authentication.SslProtocols.Tls12;
signaling.OnMessage += async(sender, message) =>
{
try
{
//response messages may differ from service provider to another, adjust WebsocketResponse object accordingly
var messageObject = JsonConvert.DeserializeObject <WebsocketResponse>(message.Data);
var mess = new SdpMessage {
Content = messageObject.Data.Sdp, Type = SdpMessage.StringToType("answer")
};
if (!string.IsNullOrEmpty(mess.Content))
{
Console.WriteLine("Sdpmessage: {0}, Type: {1}", mess.Content, mess.Type);
await pc.SetRemoteDescriptionAsync(mess);
if (mess.Type == SdpMessageType.Answer)
{
bool res = pc.CreateAnswer();
Console.WriteLine("Answer created? {0}", res);
}
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
};
signaling.OnError += (sender, e) =>
{
Console.WriteLine(e.Message, e.Exception);
};
signaling.OnOpen += (sender, e) =>
{
pc.CreateOffer();
Console.WriteLine("open");
};
signaling.Connect();
transceiver.Associated += (tranciever) =>
{
Console.WriteLine("Transivier: {0}, {1}", tranciever.Name, tranciever.StreamIDs);
};
pc.LocalSdpReadytoSend += (SdpMessage message) =>
{
Console.WriteLine(message.Content);
//modify the offer message according to your need
var data = new
{
streamId = "",
sdp = message.Content
};
var payload = JsonConvert.SerializeObject(new
{
type = "cmd",
transId = 0,
name = "view",
data = data
});
Console.WriteLine("Sdp offer to send: " + payload);
signaling.Send(payload);
};
pc.RenegotiationNeeded += () =>
{
Console.WriteLine("Regotiation needed");
};
//when a remote audio track is added, start recording
pc.AudioTrackAdded += (RemoteAudioTrack track) =>
{
//create a wavewriter to write the data to
WaveWriter w = new WaveWriter("audio.mp3", capture.WaveFormat);
//setup an eventhandler to receive the recorded data
capture.DataAvailable += (s, e) =>
{
//save the recorded audio
w.Write(e.Data, e.Offset, e.ByteCount);
};
//start recording
capture.Start();
//this should output the sound
track.OutputToDevice(true);
//track.AudioFrameReady += (AudioFrame frame) =>
//{
//you can print anything here if you want to make sure that's you're recieving audio
//};
};
pc.Connected += () =>
{
Console.WriteLine("Connected");
Console.WriteLine(pc.DataChannels.Count);
};
pc.IceStateChanged += (IceConnectionState newState) =>
{
Console.WriteLine($"ICE state: {newState}");
};
Console.WriteLine("Press enter to stop");
Console.ReadLine();
//stop recording
capture.Stop();
pc.Close();
signaling.Close();
Console.WriteLine("Program termined.");
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
