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 := miniogo.GetObjectOptions{
		VersionID: srcObjInfo.VersionID,
	}

		c1 := strings.Index(line, ":")
		if c1 < 0 {
			continue
		}
		c2 := strings.Index(line[c1+1:], ":")
		if c2 < 0 {
			continue
		}
		c2 += c1 + 1

		filename := line[:c1]
		i, _ := strconv.Atoi(line[c1+1 : c2])
		i--
		if i < 0 || i >= len(names) {
			if isError {
				sawUnmatchedErrors = true
			}
			continue
		}

		switch filename {
		case "completed":