Function parseRangeHeaders

parseRangeHeaders(header, typ): {
    end: number;
    start: number;
    total: number;
}
Parse start, end and total from HTTP Content-Range header value
Parameters
- header: null | string
  HTTP Range header value
- typ: string
  type of range, e.g. "aids"
Returns {
    end: number;
    start: number;
    total: number;
}
- object with start, end and total properties
- end: number
- start: number
- total: number
- Defined in keri/core/httping.ts:195