public STUNMessage SendRecvSTUN(IPEndPoint epStun, STUNMessage msgRequest, int nTimeout)
{
STUNRequestResponse req = new STUNRequestResponse(msgRequest);
lock (StunLock)
{
StunRequestResponses.Add(req);
}
SendSTUNMessage(msgRequest, epStun);
req.WaitForResponse(nTimeout);
return(req.ResponseMessage);
}
void RTPUDPClient_OnReceiveMessage(byte[] bData, int nLength, IPEndPoint epfrom, IPEndPoint epthis, DateTime dtReceived)
{
/// if we are an performing ICE, see if this is an ICE packet instead of an RTP one
if (nLength >= 8)
{
//0x2112A442
if ((bData[4] == 0x21) && (bData[5] == 0x12) && (bData[6] == 0xA4) && (bData[7] == 0x42))
{
/// STUN message
STUN2Message smsg = new STUN2Message();
byte[] bStun = new byte[nLength];
Array.Copy(bData, 0, bStun, 0, nLength);
smsg.Bytes = bStun;
STUNRequestResponse foundreq = null;
lock (StunLock)
{
foreach (STUNRequestResponse queuedreq in StunRequestResponses)
{
if (queuedreq.IsThisYourResponseSetIfItIs(smsg) == true)
{
foundreq = queuedreq;
break;
}
}
if (foundreq != null)
{
StunRequestResponses.Remove(foundreq);
return;
}
}
if (OnUnhandleSTUNMessage != null)
{
OnUnhandleSTUNMessage(smsg, epfrom);
}
return;
}
}
/// TODO... handle RTCP packets if we ever care to
}
public STUNMessage SendRecvSTUN1(EndPoint epStun, STUN2Message msgRequest, int nTimeout)
{
STUNRequestResponse req = new STUNRequestResponse(msgRequest);
lock (StunLock)
{
StunRequestResponses.Add(req);
}
SendSTUNMessage(msgRequest, epStun);
bool bResponse = req.WaitForResponse(nTimeout);
lock (StunLock)
{
if (StunRequestResponses.Contains(req) == true)
{
StunRequestResponses.Remove(req);
}
}
return(req.ResponseMessage);
}
void RTPUDPClient_OnReceiveMessage(byte[] bData, int nLength, IPEndPoint epfrom, IPEndPoint epthis, DateTime dtReceived)
{
/// if we are an performing ICE, see if this is an ICE packet instead of an RTP one
if (nLength >= 8)
{
//0x2112A442
if ((bData[4] == 0x21) && (bData[5] == 0x12) && (bData[6] == 0xA4) && (bData[7] == 0x42))
{
/// STUN message
STUNMessage smsg = new STUN2Message();
byte[] bStun = new byte[nLength];
Array.Copy(bData, 0, bStun, 0, nLength);
try
{
smsg.Bytes = bStun;
}
catch (Exception ex)
{
smsg = new STUNMessage();
smsg.Bytes = bStun;
}
STUNRequestResponse foundreq = null;
lock (StunLock)
{
foreach (STUNRequestResponse queuedreq in StunRequestResponses)
{
if (queuedreq.IsThisYourResponseSetIfItIs(smsg) == true)
{
foundreq = queuedreq;
break;
}
}
if (foundreq != null)
{
StunRequestResponses.Remove(foundreq);
return;
}
}
if (OnUnhandleSTUNMessage != null)
{
OnUnhandleSTUNMessage(smsg, epfrom);
}
return;
}
}
RTPPacket packet = RTPPacket.BuildPacket(bData, 0, nLength);
if (packet != null) /// Seems we get some TURN channel data messages from google talk
{
if (ReceiveSSRC == 0)
{
ReceiveSSRC = packet.SSRC;
}
if ((packet.PayloadType == this.Payload) && (packet.SSRC == this.ReceiveSSRC))
{
IncomingRTPPacketBuffer.AddPacket(packet);
}
}
}
