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 != ChannelId)
{
return;
}
var sequenceNumber = datagram[8];
var process = true;
lock (SequenceNumberLock)
{
if (sequenceNumber <= _rxSequenceNumber)
{
process = false;
}
_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, ThreeLevelGroupAddressing, IsDebug))
{
case ResponseType.Event:
base.EventReceived(knxDatagram.DestinationAddress, knxDatagram.Data);
break;
case ResponseType.Status:
base.StatusReceived(knxDatagram.DestinationAddress, knxDatagram.Data);
break;
}
}
SendTunnelingAck(sequenceNumber);
}
private void ProcessConnectionStateResponse(byte[] datagram)
{
// HEADER
// 06 10 02 08 00 08 -- 48 21
var knxDatagram = new KnxDatagram
{
HeaderLength = datagram[0],
ProtocolVersion = datagram[1],
ServiceType = new[] { datagram[2], datagram[3] },
TotalLength = datagram[4] + datagram[5],
ChannelID = datagram[6]
};
var response = datagram[7];
if (response != 0x21)
return;
if (IsDebug)
System.Diagnostics.Debug.WriteLine("KnxReceiverTunneling: Received connection state response - No active connection with channel ID {0}", knxDatagram.ChannelID);
Disconnect();
}
private void ProcessConnectResponse(byte[] datagram)
{
// HEADER
var knxDatagram = new KnxDatagram
{
HeaderLength = datagram[0],
ProtocolVersion = datagram[1],
ServiceType = new[] { datagram[2], datagram[3] },
TotalLength = datagram[4] + datagram[5],
ChannelID = datagram[6],
Status = datagram[7]
};
if (knxDatagram.ChannelID == 0x00 && knxDatagram.Status == 0x24)
{
if (IsDebug)
System.Diagnostics.Debug.WriteLine("KnxReceiverTunneling: Received connect response - No more connections available");
}
else
{
ChannelId = knxDatagram.ChannelID;
ResetSequenceNumber();
InitializeStateRequest();
base.Connected();
}
}
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 != ChannelId)
return;
var sequenceNumber = datagram[8];
var process = true;
lock (SequenceNumberLock)
{
if (sequenceNumber <= _rxSequenceNumber)
process = false;
_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, ThreeLevelGroupAddressing, IsDebug))
{
case ResponseType.Event:
base.EventReceived(knxDatagram.DestinationAddress, knxDatagram.Data);
break;
case ResponseType.Status:
base.StatusReceived(knxDatagram.DestinationAddress, knxDatagram.Data);
break;
}
}
SendTunnelingAck(sequenceNumber);
}