writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}
	if size >= 0 {
		if err := hashReader.AddChecksum(r, false); err != nil {
			writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidChecksum), r.URL)
			return
		}
		opts.WantChecksum = hashReader.Checksum()
	}

	rawReader := hashReader
	pReader := NewPutObjReader(rawReader)
	opts.IndexCB = idxCb