public void DtlsPacketReceived(IceCandidate iceCandidate, byte[] buffer, IPEndPoint remoteEndPoint)
{
logger.Debug("DTLS packet received " + buffer.Length + " bytes from " + remoteEndPoint.ToString() + ".");
if (DtlsContext == null)
{
DtlsContext = new DtlsManaged();
int res = DtlsContext.Init();
logger.Debug("DtlsContext initialisation result=" + res);
}
int bytesWritten = DtlsContext.Write(buffer, buffer.Length);
if (bytesWritten != buffer.Length)
{
logger.Warn("The required number of bytes were not successfully written to the DTLS context.");
}
else
{
byte[] dtlsOutBytes = new byte[2048];
int bytesRead = DtlsContext.Read(dtlsOutBytes, dtlsOutBytes.Length);
if (bytesRead == 0)
{
logger.Debug("No bytes read from DTLS context :(.");
}
else
{
logger.Debug(bytesRead + " bytes read from DTLS context sending to " + remoteEndPoint.ToString() + ".");
iceCandidate.LocalRtpSocket.SendTo(dtlsOutBytes, 0, bytesRead, SocketFlags.None, remoteEndPoint);
//if (client.DtlsContext.IsHandshakeComplete())
if (DtlsContext.GetState() == 3)
{
logger.Debug("DTLS negotiation complete for " + remoteEndPoint.ToString() + ".");
SrtpContext = new SRTPManaged(DtlsContext, false);
SrtpReceiveContext = new SRTPManaged(DtlsContext, true);
Peer.IsDtlsNegotiationComplete = true;
iceCandidate.RemoteRtpEndPoint = remoteEndPoint;
}
}
}
}
public void DtlsPacketReceived(IceCandidate iceCandidate, byte[] buffer, IPEndPoint remoteEndPoint)
{
logger.Debug("DTLS packet received for media type " + iceCandidate.MediaType.ToString().ToUpper() + " of " + buffer.Length + " bytes from " + remoteEndPoint.ToString() + ".");
if (!File.Exists(_dtlsCertFilePath))
{
throw new ApplicationException($"The DTLS certificate file could not be found at {_dtlsCertFilePath}.");
}
if (!File.Exists(_dtlsKeyFilePath))
{
throw new ApplicationException($"The DTLS key file could not be found at {_dtlsKeyFilePath}.");
}
if (DtlsContext == null)
{
lock (_secureChannelInitMre)
{
DtlsContext = new DtlsManaged(_dtlsCertFilePath, _dtlsKeyFilePath);
int res = DtlsContext.Init();
logger.Debug("DtlsContext initialisation result=" + res);
}
}
int bytesWritten = DtlsContext.Write(buffer, buffer.Length);
if (bytesWritten != buffer.Length)
{
logger.Warn("The required number of bytes were not successfully written to the DTLS context.");
}
else
{
byte[] dtlsOutBytes = new byte[4096];
int bytesRead = DtlsContext.Read(dtlsOutBytes, dtlsOutBytes.Length);
if (bytesRead == 0)
{
logger.Debug("No bytes read from DTLS context :(.");
}
else
{
logger.Debug(bytesRead + " bytes read from DTLS context sending to " + remoteEndPoint.ToString() + ".");
iceCandidate.LocalRtpSocket.SendTo(dtlsOutBytes, 0, bytesRead, SocketFlags.None, remoteEndPoint);
//if (client.DtlsContext.IsHandshakeComplete())
if (DtlsContext.GetState() == 3)
{
logger.Debug("DTLS negotiation complete for " + remoteEndPoint.ToString() + ".");
lock (_secureChannelInitMre)
{
SrtpContext = new SRTPManaged(DtlsContext, false);
SrtpReceiveContext = new SRTPManaged(DtlsContext, true);
}
Peer.IsDtlsNegotiationComplete = true;
iceCandidate.RemoteRtpEndPoint = remoteEndPoint;
_audioRtpSession = new RTPSession((int)RTPPayloadTypesEnum.PCMU, SrtpContext.ProtectRTP, SrtpContext.ProtectRTCP);
_videoRtpSession = new RTPSession(VP8_PAYLOAD_TYPE_ID, SrtpContext.ProtectRTP, SrtpContext.ProtectRTCP);
}
}
}
}