if !ok {
		s.writeErrorResponse(w, errAuthentication)
		return
	}

	size, err := strconv.Atoi(sizeStr)
	if err != nil {
		size = 64 * humanize.MiByte
	}

	concurrent, err := strconv.Atoi(concurrentStr)
	if err != nil {
		concurrent = 32
	}

	duration, err := time.ParseDuration(durationStr)
	if err != nil {

	}
	if crypto.S3.IsEncrypted(srcObjInfo.UserDefined) {
		opts.ServerSideEncryption = encrypt.NewSSE()
	}
	slc := strings.Split(srcObjInfo.ETag, "-")
	if len(slc) == 2 {
		partsCount, err := strconv.Atoi(slc[1])
		if err != nil {
			return err
		}
		return r.copyWithMultipartfromSource(ctx, api, core, srcObjInfo, opts, partsCount)
	}
	gopts := minio.GetObjectOptions{
		VersionID: srcObjInfo.VersionID,
	}