static void deserializeDNP3(ref byte[] buffer)
{
var sb = new StringBuilder("new byte[] { ");
for (var i = 0; i < buffer.Length; i++)
{
var b = buffer[i];
sb.Append(b);
if (i < buffer.Length - 1)
{
sb.Append(", ");
}
}
sb.Append(" }");
DNP3Simple.LinkLayer ll = new DNP3Simple.LinkLayer();
ll.deserialize(ref buffer);
DNP3Simple.TransportLayer tl = new DNP3Simple.TransportLayer();
tl.deserialize(ref buffer);
DNP3Simple.ApplicationLayer al = new DNP3Simple.ApplicationLayer();
al.deserialize(ref buffer);
Console.WriteLine("DNP3 Application request " + sb.ToString());
DNP3Response(ll, tl, al, ref buffer);
}
public static void ModifyApplicationHeader(ref ApplicationLayer al_)
{
// function code
if (al_.FunctionCode == (byte)DNP3Simple.FunctionCode.READ)
{
al_.FunctionCode = (byte)DNP3Simple.FunctionCode.RESPONSE;
}
if (al_.FunctionCode == (byte)DNP3Simple.FunctionCode.WRITE)
{
al_.FunctionCode = (byte)DNP3Simple.FunctionCode.RESPONSE;
}
if (al_.FunctionCode == (byte)DNP3Simple.FunctionCode.OPERATE)
{
al_.FunctionCode = (byte)DNP3Simple.FunctionCode.RESPONSE;
}
if (al_.FunctionCode == (byte)DNP3Simple.FunctionCode.DIRECT_OPERATE)
{
al_.FunctionCode = (byte)DNP3Simple.FunctionCode.RESPONSE;
}
if (al_.FunctionCode == (byte)DNP3Simple.FunctionCode.DIRECT_OPERATE_NR)
{
al_.FunctionCode = (byte)DNP3Simple.FunctionCode.UNKNOWN;
}
// upgrade the control byte based on the rules, currently keep dummy
// application code
al_.FIR = 1;
al_.FIN = 1;
al_.CON = 1;
al_.UNS = 0;
al_.seq = 1;
al_.ApplicationControl = al_.GetControlByte();
}
public static void ProcessApplicationHeader(ref ApplicationLayer al_)
{
// application code
al_.FIR = (byte)((al_.ApplicationControl & 0x80) >> 7);
al_.FIN = (byte)((al_.ApplicationControl & 0x40) >> 6);
al_.CON = (byte)((al_.ApplicationControl & 0x20) >> 5);
al_.UNS = (byte)((al_.ApplicationControl & 0x10) >> 4);
al_.seq = (byte)(al_.ApplicationControl & 0x0F);
}
public static byte[] TransportResponse(TransportLayer tl_, ApplicationLayer al_)
{
TransportLayer tl = new TransportLayer();
tl.TransportData = al_.ApplicationData;
tl.seq = (byte)(tl_.seq + 1);
tl.FIN = 1;
tl.FIR = 1;
tl.serialize(ref tl.TransportData);
return(tl.TransportData);
}
public static byte[] ApplicationResponse(ApplicationLayer al_)
{
ProcessApplicationHeader(ref al_);
ModifyApplicationHeader(ref al_);
// we will send the DNP3 request
ApplicationLayer al = new ApplicationLayer();
al.InternalIndications = 0x8000; // Device Restart for READ binary input change REQUEST
byte[] data = new byte[] { 0x00, 0x00 };
data[1] = (byte)(al.InternalIndications & 0xFF);
data[0] = (byte)((al.InternalIndications >> 8) & 0xFF);
al.ApplicationData = data;
al.FunctionCode = al_.FunctionCode;
al.ApplicationControl = al_.ApplicationControl;
al.serialize(ref al.ApplicationData);
return(al.ApplicationData);
}