private void ProcessDatagramHeaders(byte[] datagram)
{
// HEADER
// TODO: Might be interesting to take out these magic numbers for the datagram indices
var knxDatagram = new KnxDatagram
{
HeaderLength = datagram[0],
ProtocolVersion = datagram[1],
ServiceType = new[] { datagram[2], datagram[3] },
TotalLength = datagram[4] + datagram[5]
};
var channelId = datagram[7];
if (channelId != this.ChannelId)
{
return;
}
var sequenceNumber = datagram[8];
var process = true;
lock (this.SequenceNumberLock)
{
if (sequenceNumber <= this.m_rxSequenceNumber)
{
process = false;
}
this.m_rxSequenceNumber = sequenceNumber;
}
if (process)
{
// TODO: Magic number 10, what is it?
var cemi = new byte[datagram.Length - 10];
Array.Copy(datagram, 10, cemi, 0, datagram.Length - 10);
switch (DatagramProcessing.ProcessCEMI(ref knxDatagram, cemi, this.ThreeLevelGroupAddressing, this.IsDebug))
{
case ResponseType.Event:
base.EventReceived(knxDatagram.DestinationAddress, knxDatagram.Data);
break;
case ResponseType.Status:
base.StatusReceived(knxDatagram.DestinationAddress, knxDatagram.Data);
break;
}
}
this.SendTunnelingAck(sequenceNumber);
}