Delphi magic packet : wake on lan

//Function HexToInt used in this procedure is defined in
//the category "Conversions" of this web

PROCEDURE WakeUPComputer(aMacAddress: STRING);
VAR
i, j: Byte;
//lBuffer: array[1..116] of Byte;
lBuffer: SysUtils.TBytes;
lUDPClient: TIDUDPClient;
BEGIN
TRY
FOR i := 1 TO 6 DO BEGIN
lBuffer[i] := HexToInt(aMacAddress[(i * 2) - 1] + aMacAddress[i * 2]); END;
lBuffer[7] := $00;
lBuffer[8] := $74;
lBuffer[9] := $FF;
lBuffer[10] := $FF;
lBuffer[11] := $FF;
lBuffer[12] := $FF;
lBuffer[13] := $FF;
lBuffer[14] := $FF;
FOR j := 1 TO 16 DO BEGIN
FOR i := 1 TO 6 DO BEGIN
lBuffer[15 + (j - 1) * 6 + (i - 1)] := lBuffer[i];
END;
END;
lBuffer[116] := $00;
lBuffer[115] := $40;
lBuffer[114] := $90;
lBuffer[113] := $90;
lBuffer[112] := $00;
lBuffer[111] := $40;
TRY
lUDPClient := TIdUDPClient.Create(NIL);
lUDPClient.BroadcastEnabled := true;
lUDPClient.Host := '255.255.255.255';
lUDPClient.Port := 2050;
// d6 lUDPClient.SendBuffer(lBuffer, 116);
lUDPClient.SendBuffer(lUDPClient.Host, lUDPClient.Port, tidbytes(lBuffer));
FINALLY
lUDPClient.Free;
END;
EXCEPT
RAISE;
END;
END;