private static byte[] generateInitiateRequest(CosemParameters parameters)
{
System.IO.MemoryStream stream = new System.IO.MemoryStream();
stream.WriteByte(Constants.xDlmsApdu.NoCiphering.INITIATE_REQUEST);
stream.WriteByte(0); //Dedicated key
stream.WriteByte(0); //Response-allowed
stream.WriteByte(0); //Proposed quality of service
stream.WriteByte(Constants.DLMS_VERSION); //Dlms version
stream.WriteByte(Constants.ConformanceBlock.TAG); //Conformance block tag
byte[] conformance = generateConformanceBlock(parameters);
stream.WriteByte((byte)(conformance.Length));
stream.Write(conformance, 0, conformance.Length); //Conformance block
//stream.WriteByte(ByteBuffer.allocate(2).putShort(parameters.maxPduSize).array());
stream.WriteByte((byte)(parameters.maxPduSize >> 8)); //Max pdu size
stream.WriteByte((byte)(parameters.maxPduSize));
System.IO.MemoryStream stream2 = new System.IO.MemoryStream();
if (parameters.securityType != SecurityType.NONE)
{
stream2.WriteByte(Constants.xDlmsApdu.GlobalCiphering.INITIATE_REQUEST);
byte[] data = Security.authenticatedEncryption(parameters, stream.ToArray());
stream2.WriteByte((byte)(data.Length));
stream2.Write(data, 0, data.Length);
}
else
{
//stream2.WriteByte(stream.ToArray());
byte[] aux = stream.ToArray();
stream2.Write(aux, 0, aux.Length);
}
return(stream2.ToArray());
}
private byte[] packFrame(int cmdGlobalCipher, byte[] payload)
{
try
{
if (parameters.securityType != SecurityType.NONE)
{
System.IO.MemoryStream stream = new System.IO.MemoryStream();
byte[] data = Security.authenticatedEncryption(parameters, payload);
stream.SetLength(0);
stream.WriteByte((byte)cmdGlobalCipher);
//Array.Reverse(getSizeBytes(data.Length));
stream.Write(getSizeBytes(data.Length), 0, getSizeBytes(data.Length).Length);
//Array.Reverse(data);
stream.Write(data, 0, data.Length);
return(stream.ToArray());
}
return(payload);
}
catch (IOException)
{
throw new DlmsException(DlmsException.DlmsExceptionReason.INTERNAL_ERROR);
}
}