public async Task <RTCSessionDescriptionInit> GetOffer(string id)
{
if (string.IsNullOrWhiteSpace(id))
{
throw new ArgumentNullException("id", "A unique ID parameter must be supplied when creating a new peer connection.");
}
else if (_peerConnections.ContainsKey(id))
{
throw new ArgumentNullException("id", "The specified peer connection ID is already in use.");
}
RTCConfiguration pcConfiguration = new RTCConfiguration
{
certificates = new List <RTCCertificate>
{
new RTCCertificate
{
X_CertificatePath = DTLS_CERTIFICATE_PATH,
X_KeyPath = DTLS_KEY_PATH,
X_Fingerprint = DTLS_CERTIFICATE_FINGERPRINT
}
}
};
var peerConnection = new RTCPeerConnection(pcConfiguration);
var dtls = new DtlsHandshake(DTLS_CERTIFICATE_PATH, DTLS_KEY_PATH);
MediaStreamTrack audioTrack = new MediaStreamTrack("0", SDPMediaTypesEnum.audio, false, new List <SDPMediaFormat> {
new SDPMediaFormat(SDPMediaFormatsEnum.PCMU)
}, MediaStreamStatusEnum.RecvOnly);
peerConnection.addTrack(audioTrack);
//peerConnection.OnRtpPacketReceived += (SDPMediaTypesEnum media, RTPPacket rtpPkt) => _logger.LogDebug($"RTP {media} pkt received, SSRC {rtpPkt.Header.SyncSource}, SeqNum {rtpPkt.Header.SequenceNumber}.");
//peerConnection.OnReceiveReport += RtpSession_OnReceiveReport;
//peerConnection.OnSendReport += RtpSession_OnSendReport;
peerConnection.OnTimeout += (mediaType) =>
{
peerConnection.Close("remote timeout");
dtls.Shutdown();
};
peerConnection.onconnectionstatechange += (state) =>
{
if (state == RTCPeerConnectionState.closed || state == RTCPeerConnectionState.disconnected || state == RTCPeerConnectionState.failed)
{
//peerConnection.OnReceiveReport -= RtpSession_OnReceiveReport;
//peerConnection.OnSendReport -= RtpSession_OnSendReport;
_logger.LogDebug($"Peer connection {id} closed.");
_peerConnections.TryRemove(id, out _);
}
else if (state == RTCPeerConnectionState.connected)
{
_logger.LogDebug("Peer connection connected.");
}
};
_ = Task <bool> .Run(() => Task.FromResult(DoDtlsHandshake(peerConnection, dtls)))
.ContinueWith((t) =>
{
_logger.LogDebug($"dtls handshake result {t.Result}.");
if (t.Result)
{
var remoteEP = peerConnection.IceSession.ConnectedRemoteEndPoint;
peerConnection.SetDestination(SDPMediaTypesEnum.audio, remoteEP, remoteEP);
}
else
{
dtls.Shutdown();
peerConnection.Close("dtls handshake failed.");
}
});
var offerSdp = await peerConnection.createOffer(null);
await peerConnection.setLocalDescription(offerSdp);
_peerConnections.TryAdd(id, peerConnection);
return(offerSdp);
}
static async Task Main()
{
Console.WriteLine("SIPSorcery sip.js Demo");
AddConsoleLogger();
var sipTransport = new SIPTransport();
EnableTraceLogs(sipTransport);
var sipChannel = new SIPWebSocketChannel(IPAddress.Loopback, 80);
var wssCertificate = new System.Security.Cryptography.X509Certificates.X509Certificate2("localhost.pfx");
var sipChannelSecure = new SIPWebSocketChannel(IPAddress.Loopback, 443, wssCertificate);
sipTransport.AddSIPChannel(sipChannel);
sipTransport.AddSIPChannel(sipChannelSecure);
var userAgent = new SIPUserAgent(sipTransport, null, true);
userAgent.OnIncomingCall += async(ua, req) =>
{
Log.LogDebug($"Auto-answering incoming call from {req.Header.From}.");
var uas = userAgent.AcceptCall(req);
RTCConfiguration pcConfiguration = new RTCConfiguration
{
certificates = new List <RTCCertificate>
{
new RTCCertificate
{
X_CertificatePath = DTLS_CERTIFICATE_PATH,
X_KeyPath = DTLS_KEY_PATH,
X_Fingerprint = DTLS_CERTIFICATE_FINGERPRINT
}
},
//X_RemoteSignallingAddress = context.UserEndPoint.Address,
//iceServers = new List<RTCIceServer> { new RTCIceServer { urls = SIPSORCERY_STUN_SERVER } }
};
var peerConnection = new RTCPeerConnection(pcConfiguration);
var dtls = new DtlsHandshake(DTLS_CERTIFICATE_PATH, DTLS_KEY_PATH);
peerConnection.OnTimeout += (mediaType) =>
{
peerConnection.Close("remote timeout");
};
peerConnection.oniceconnectionstatechange += async(state) =>
{
Log.LogDebug($"ICE connection state change to {state}.");
if (state == RTCIceConnectionState.connected)
{
var remoteEndPoint = peerConnection.AudioDestinationEndPoint;
Log.LogInformation($"ICE connected to remote end point {remoteEndPoint}.");
await Task.Run(() => DoDtlsHandshake(peerConnection, dtls))
.ContinueWith((dtlsResult) =>
{
Log.LogDebug($"dtls handshake result {dtlsResult.Result}.");
if (dtlsResult.Result)
{
var remoteEP = peerConnection.AudioDestinationEndPoint;
peerConnection.SetDestination(SDPMediaTypesEnum.audio, remoteEP, remoteEP);
}
else
{
dtls.Shutdown();
peerConnection.Close("dtls handshake failed.");
}
});
}
};
peerConnection.onconnectionstatechange += (state) =>
{
if (state == RTCPeerConnectionState.connected)
{
var remoteEP = peerConnection.AudioDestinationEndPoint;
Log.LogDebug($"DTLS connected on {remoteEP}.");
peerConnection.SetDestination(SDPMediaTypesEnum.audio, remoteEP, remoteEP);
peerConnection.SetDestination(SDPMediaTypesEnum.video, remoteEP, remoteEP);
peerConnection.OnReceiveReport += RtpSession_OnReceiveReport;
peerConnection.OnSendReport += RtpSession_OnSendReport;
// peerConnection.OnRtpPacketReceived += OnRtpPacketReceived;
}
};
MediaStreamTrack audioTrack = new MediaStreamTrack(SDPMediaTypesEnum.audio, false, new List <SDPMediaFormat> {
new SDPMediaFormat(SDPMediaFormatsEnum.PCMU)
}, MediaStreamStatusEnum.SendRecv);
peerConnection.addTrack(audioTrack);
//MediaStreamTrack videoTrack = new MediaStreamTrack("1", SDPMediaTypesEnum.video, false, new List<SDPMediaFormat> { new SDPMediaFormat(SDPMediaFormatsEnum.VP8) }, MediaStreamStatusEnum.Inactive);
//peerConnection.addTrack(videoTrack);
var answerResult = await userAgent.Answer(uas, peerConnection);
};
Console.Write("press any key to exit...");
Console.Read();
sipTransport.Shutdown();
}
private static async Task <RTCPeerConnection> StartPeerConnection()
{
RTCConfiguration pcConfiguration = new RTCConfiguration
{
certificates = new List <RTCCertificate>
{
new RTCCertificate
{
X_CertificatePath = DTLS_CERTIFICATE_PATH,
X_KeyPath = DTLS_KEY_PATH,
X_Fingerprint = DTLS_CERTIFICATE_FINGERPRINT
}
}
};
var peerConnection = new RTCPeerConnection(pcConfiguration);
MediaStreamTrack videoTrack = new MediaStreamTrack(
SDPMediaTypesEnum.video,
false,
new List <SDPMediaFormat> {
new SDPMediaFormat(SDPMediaFormatsEnum.VP8)
},
MediaStreamStatusEnum.SendOnly);
peerConnection.addTrack(videoTrack);
peerConnection.OnReceiveReport += RtpSession_OnReceiveReport;
peerConnection.OnSendReport += RtpSession_OnSendReport;
//peerConnection.OnRtcpBye += (reason) =>
//{
// logger.LogInformation("RTCP BYE report received from remote peer.");
// peerConnection.Close(reason);
// dtls.Shutdown();
//};
peerConnection.OnTimeout += (mediaType) =>
{
peerConnection.Close("remote timeout");
};
peerConnection.onconnectionstatechange += async(state) =>
{
if (state == RTCPeerConnectionState.closed || state == RTCPeerConnectionState.disconnected || state == RTCPeerConnectionState.failed)
{
OnTestPatternSampleReady -= peerConnection.SendMedia;
peerConnection.OnReceiveReport -= RtpSession_OnReceiveReport;
peerConnection.OnSendReport -= RtpSession_OnSendReport;
}
else if (state == RTCPeerConnectionState.connected)
{
// The DTLS handshake completed.
logger.LogDebug("Peer connection connected.");
OnTestPatternSampleReady += peerConnection.SendMedia;
await peerConnection.Start();
if (_sendTestPatternTimer == null)
{
_sendTestPatternTimer = new Timer(SendTestPattern, null, 0, TEST_PATTERN_SPACING_MILLISECONDS);
}
}
};
peerConnection.oniceconnectionstatechange += (state) =>
{
logger.LogDebug($"ICE connection state change {state}.");
// The ICE connectivity check completed successfully.
if (state == RTCIceConnectionState.connected)
{
var remoteEP = peerConnection.AudioDestinationEndPoint;
peerConnection.SetDestination(SDPMediaTypesEnum.audio, remoteEP, remoteEP);
}
};
var offerSdp = peerConnection.createOffer(null);
await peerConnection.setLocalDescription(offerSdp);
logger.LogDebug(offerSdp.sdp);
return(peerConnection);
}
private static async Task <RTCPeerConnection> SendSDPOffer(WebSocketContext context)
{
logger.LogDebug($"Web socket client connection from {context.UserEndPoint}.");
RTCConfiguration pcConfiguration = new RTCConfiguration
{
certificates = new List <RTCCertificate>
{
new RTCCertificate
{
X_CertificatePath = DTLS_CERTIFICATE_PATH,
X_KeyPath = DTLS_KEY_PATH,
X_Fingerprint = DTLS_CERTIFICATE_FINGERPRINT
}
}
};
var peerConnection = new RTCPeerConnection(pcConfiguration);
var dtls = new DtlsHandshake(DTLS_CERTIFICATE_PATH, DTLS_KEY_PATH);
MediaStreamTrack audioTrack = new MediaStreamTrack("0", SDPMediaTypesEnum.audio, false, new List <SDPMediaFormat> {
new SDPMediaFormat(SDPMediaFormatsEnum.PCMU)
});
peerConnection.addTrack(audioTrack);
MediaStreamTrack videoTrack = new MediaStreamTrack("1", SDPMediaTypesEnum.video, false, new List <SDPMediaFormat> {
new SDPMediaFormat(SDPMediaFormatsEnum.VP8)
});
peerConnection.addTrack(videoTrack);
peerConnection.OnReceiveReport += RtpSession_OnReceiveReport;
peerConnection.OnSendReport += RtpSession_OnSendReport;
peerConnection.OnTimeout += (mediaType) =>
{
peerConnection.Close("remote timeout");
dtls.Shutdown();
};
peerConnection.onconnectionstatechange += (state) =>
{
if (state == RTCPeerConnectionState.closed || state == RTCPeerConnectionState.disconnected || state == RTCPeerConnectionState.failed)
{
logger.LogDebug($"RTC peer connection was closed.");
OnMediaSampleReady -= peerConnection.SendMedia;
peerConnection.OnReceiveReport -= RtpSession_OnReceiveReport;
peerConnection.OnSendReport -= RtpSession_OnSendReport;
}
else if (state == RTCPeerConnectionState.connected)
{
logger.LogDebug("Peer connection connected.");
OnMediaSampleReady += peerConnection.SendMedia;
}
};
peerConnection.oniceconnectionstatechange += (state) =>
{
if (state == RTCIceConnectionState.connected)
{
logger.LogDebug("Starting DTLS handshake task.");
bool dtlsResult = false;
Task.Run(async() => dtlsResult = await DoDtlsHandshake(peerConnection, dtls))
.ContinueWith((t) =>
{
logger.LogDebug($"dtls handshake result {dtlsResult}.");
if (dtlsResult)
{
peerConnection.SetDestination(SDPMediaTypesEnum.audio, peerConnection.IceSession.ConnectedRemoteEndPoint, peerConnection.IceSession.ConnectedRemoteEndPoint);
}
else
{
dtls.Shutdown();
peerConnection.Close("dtls handshake failed.");
}
});
}
};
var offerInit = await peerConnection.createOffer(null);
await peerConnection.setLocalDescription(offerInit);
logger.LogDebug($"Sending SDP offer to client {context.UserEndPoint}.");
context.WebSocket.Send(offerInit.sdp);
return(peerConnection);
}
private static RTCPeerConnection CreatePeerConnection()
{
RTCConfiguration pcConfiguration = new RTCConfiguration
{
certificates = new List <RTCCertificate>
{
new RTCCertificate
{
X_CertificatePath = DTLS_CERTIFICATE_PATH,
X_KeyPath = DTLS_KEY_PATH,
X_Fingerprint = DTLS_CERTIFICATE_FINGERPRINT
}
}
};
var peerConnection = new RTCPeerConnection(pcConfiguration);
peerConnection.OnReceiveReport += RtpSession_OnReceiveReport;
peerConnection.OnSendReport += RtpSession_OnSendReport;
peerConnection.onconnectionstatechange += (state) =>
{
if (state == RTCPeerConnectionState.closed || state == RTCPeerConnectionState.disconnected || state == RTCPeerConnectionState.failed)
{
OnMediaSampleReady -= peerConnection.SendMedia;
peerConnection.OnReceiveReport -= RtpSession_OnReceiveReport;
peerConnection.OnSendReport -= RtpSession_OnSendReport;
}
else if (state == RTCPeerConnectionState.connected)
{
logger.LogDebug("Peer connection connected.");
OnMediaSampleReady += peerConnection.SendMedia;
}
};
peerConnection.oniceconnectionstatechange += (state) =>
{
if (state == RTCIceConnectionState.connected)
{
logger.LogDebug("Starting DTLS handshake task.");
bool dtlsResult = false;
Task.Run(() => dtlsResult = DoDtlsHandshake(peerConnection))
.ContinueWith((t) =>
{
logger.LogDebug($"dtls handshake result {dtlsResult}.");
if (dtlsResult)
{
peerConnection.SetDestination(SDPMediaTypesEnum.audio, peerConnection.IceSession.ConnectedRemoteEndPoint, peerConnection.IceSession.ConnectedRemoteEndPoint);
}
else
{
peerConnection.Close("dtls handshake failed.");
}
});
}
};
return(peerConnection);
}