private void UdpClientDataReceived(object sender, Spark.Universal.Net.DataReceivedEventArgs e)
{
// parse datagram
byte[] datagram = e.Data;
var tt = KnxNetTunnelingDatagram.FromBytes(e.Data);
switch (tt.service_type)
{
case (ushort)KnxHelper.SERVICE_TYPE.CONNECT_RESPONSE:
this.ProcessConnectResponse(datagram);
break;
case (ushort)KnxHelper.SERVICE_TYPE.CONNECTIONSTATE_RESPONSE:
this.ProcessStateResponse(datagram);
break;
case (ushort)KnxHelper.SERVICE_TYPE.TUNNELLING_ACK:
this.ProcessTunnelingAck(datagram);
break;
case (ushort)KnxHelper.SERVICE_TYPE.DISCONNECT_REQUEST:
this.ProcessDisconnectRequest(datagram);
break;
case (ushort)KnxHelper.SERVICE_TYPE.TUNNELLING_REQUEST:
ProcessDatagramHeaders(datagram);
break;
}
}
private void ProcessStateResponse(byte[] datagram)
{
var knxDatagram = KnxNetTunnelingDatagram.FromBytes(datagram);
if (knxDatagram == null)
{
return;
}
if (knxDatagram.status != 0x21)
{
return; /* TODO: status should be 0 */
}
this.Disconnect();
}
private void ProcessDisconnectRequest(byte[] datagram)
{
var knxDatagram = KnxNetTunnelingDatagram.FromBytes(datagram);
if (knxDatagram == null)
{
return;
}
if (knxDatagram.channel_id != _channelId)
{
return;
}
this.Disconnected?.Invoke(this, EventArgs.Empty);
}
private void ProcessConnectResponse(byte[] datagram)
{
// HEADER
var knxDatagram = KnxNetTunnelingDatagram.FromBytes(datagram);
if (knxDatagram == null)
{
return;
}
if (knxDatagram.channel_id == 0x00 && knxDatagram.status == 0x24) /* TODO: status should be 0 */
{
// no more connections available
return;
}
_channelId = knxDatagram.channel_id;
_sequenceNo = 0;
this.Connected?.Invoke(this, EventArgs.Empty);
}