private byte[] PrepareMessage(byte[] msg)
{
CCTCrc16 crc16 = new CCTCrc16();
int msg_len = msg.Length;
byte[] reply = new byte[msg_len + 5];
reply[0] = master_address;
reply[1] = (byte)msg_len;
reply[3] = 0;
Array.Copy(msg, 0, reply, 4, msg_len);
crc16.Reset();
crc16.PushByte(reply[0]);
crc16.PushByte(reply[1]);
crc16.PushData(reply, 3, msg_len + 1);
reply[2] = (byte)(crc16.CRC & (ushort)0x00FF);
reply[4 + msg_len] = (byte)(crc16.CRC >> 8);
if (use_cryptograthy)
{
CCTCrypt.Encrypt(reply, 2, 3 + msg_len, encryption_key);
}
return(reply);
}
private byte[] OnBillIdRequest(byte[] msg)
{
string bill_id;
CCTCrc16 crc16 = new CCTCrc16();
bool result = money_id_list.TryGetValue((int)msg[4], out bill_id);
if (!result)
{
money_id_list.TryGetValue(-1, out bill_id); //get default value
}
int msg_size = bill_id.Length;
byte[] reply = new byte[msg_size + 5];
reply[0] = master_address;
reply[1] = (byte)msg_size;
reply[3] = 0;
Array.Copy(System.Text.Encoding.ASCII.GetBytes(bill_id), 0, reply, 4, msg_size);
crc16.Reset();
crc16.PushByte(reply[0]);
crc16.PushByte(reply[1]);
crc16.PushData(reply, 3, msg_size + 1);
reply [2] = (byte)(crc16.CRC & (ushort)0x00FF);
reply[4 + msg_size] = (byte)(crc16.CRC >> 8);
if (use_cryptograthy)
{
CCTCrypt.Encrypt(reply, 2, 3 + msg_size, encryption_key);
}
return(reply);
}
private byte[] SendACK()
{
CCTCrc16 crc16 = new CCTCrc16();
byte[] reply = new byte[5];
reply[0] = master_address;
reply[1] = 0;
reply[3] = 0;
crc16.Reset();
crc16.PushByte(reply[0]);
crc16.PushByte(reply[1]);
crc16.PushByte(reply[3]);
reply[2] = (byte)(crc16.CRC & (ushort)0x00FF);
reply[4] = (byte)(crc16.CRC >> 8);
if (use_cryptograthy)
{
CCTCrypt.Encrypt(reply, 2, 3, encryption_key);
}
return(reply);
}
