private Task <SIPSorcery.Net.RTCPeerConnection> CreatePeerConnection()
{
var pc = new SIPSorcery.Net.RTCPeerConnection(null);
// Set up sources and hook up send events to peer connection.
AudioExtrasSource audioSrc = new AudioExtrasSource(new AudioEncoder(), new AudioSourceOptions {
AudioSource = AudioSourcesEnum.None
});
audioSrc.OnAudioSourceEncodedSample += pc.SendAudio;
//var testPatternSource = new VideoTestPatternSource();
//testPatternSource.SetMaxFrameRate(true);
//testPatternSource.OnVideoSourceRawSample += VideoEncoderEndPoint.ExternalVideoSourceRawSample;
VideoEncoderEndPoint.OnVideoSourceEncodedSample += pc.SendVideo;
// Add tracks.
var audioTrack = new SIPSorcery.Net.MediaStreamTrack(audioSrc.GetAudioSourceFormats(), SIPSorcery.Net.MediaStreamStatusEnum.SendOnly);
pc.addTrack(audioTrack);
var videoTrack = new SIPSorcery.Net.MediaStreamTrack(VideoEncoderEndPoint.GetVideoSourceFormats(), SIPSorcery.Net.MediaStreamStatusEnum.SendOnly);
pc.addTrack(videoTrack);
// Handlers to set the codecs to use on the sources once the SDP negotiation is complete.
pc.OnVideoFormatsNegotiated += (sdpFormat) => VideoEncoderEndPoint.SetVideoSourceFormat(SIPSorcery.Net.SDPMediaFormatInfo.GetVideoCodecForSdpFormat(sdpFormat.First().FormatCodec));
pc.OnAudioFormatsNegotiated += (sdpFormat) =>
audioSrc.SetAudioSourceFormat(SIPSorcery.Net.SDPMediaFormatInfo.GetAudioCodecForSdpFormat(sdpFormat.First().FormatCodec));
pc.OnTimeout += (mediaType) => logger.LogDebug($"Timeout on media {mediaType}.");
pc.oniceconnectionstatechange += (state) => logger.LogDebug($"ICE connection state changed to {state}.");
pc.onconnectionstatechange += async(state) =>
{
logger.LogDebug($"Peer connection connected changed to {state}.");
if (state == SIPSorcery.Net.RTCPeerConnectionState.connected)
{
await audioSrc.StartAudio();
//await testPatternSource.StartVideo();
}
else if (state == SIPSorcery.Net.RTCPeerConnectionState.closed || state == SIPSorcery.Net.RTCPeerConnectionState.failed)
{
await audioSrc.CloseAudio();
//await testPatternSource.CloseVideo();
}
};
pc.GetRtpChannel().OnStunMessageReceived += (msg, ep, isRelay) =>
{
bool hasUseCandidate = msg.Attributes.Any(x => x.AttributeType == SIPSorcery.Net.STUNAttributeTypesEnum.UseCandidate);
logger.LogDebug($"STUN {msg.Header.MessageType} received from {ep}, use candidate {hasUseCandidate}.");
};
return(Task.FromResult(pc));
}