if res.ChecksumAlgo != "" {
		w.Header().Set(xhttp.AmzChecksumAlgo, res.ChecksumAlgo)
		if res.ChecksumType != "" {
			w.Header().Set(xhttp.AmzChecksumType, res.ChecksumType)
		}
	}
	encodedSuccessResponse := encodeResponse(response)

	// Write success response.
	writeSuccessResponseXML(w, encodedSuccessResponse)
}

// CopyObjectPartHandler - uploads a part by copying data from an existing object as data source.

				ctx,
				apiErr,
				r.URL.Path,
				w.Header().Get(xhttp.AmzRequestID),
				w.Header().Get(xhttp.AmzRequestHostID),
			),
		}

		writeResponse(w, apiErr.HTTPStatusCode, encodeResponse(errResp), mimeXML)
	}()

	opts, err = getOpts(ctx, r, bucket, object)
	if err != nil {
		switch vErr := err.(type) {
		case InvalidVersionID:
			apiErr = toAPIError(ctx, vErr)

		},
		actualSize,
	)
	defer objectRSC.Close()
	s3Select, err := s3select.NewS3Select(r.Body)
	if err != nil {
		if serr, ok := err.(s3select.SelectError); ok {
			encodedErrorResponse := encodeResponse(APIErrorResponse{
				Code:       serr.ErrorCode(),
				Message:    serr.ErrorMessage(),
				BucketName: bucket,
				Key:        object,
				Resource:   r.URL.Path,