public static byte[] packingHeartbeat()
        {
            PackVo vo = new Vo.PackVo();

            vo.OP_Code = OP_Code.HEARTBEAT;
            vo.Data    = new byte[0];
            return(packingData(vo));
        }
        public static byte[] packingData(byte[] bData)
        {
            PackVo vo = new Vo.PackVo();

            vo.OP_Code = OP_Code.DATA;
            vo.Data    = bData;
            return(packingData(vo));
        }