}
	comp := s2.NewWriter(pw, opts...)
	indexCh := make(chan []byte, 1)
	go func() {
		defer xioutil.SafeClose(indexCh)
		cn, err := io.Copy(comp, r)
		if err != nil {
			comp.Close()
			pw.CloseWithError(err)
			return
		}
		if on > 0 && on != cn {
			// if client didn't sent all data
			// from the client verify here.
			comp.Close()
			pw.CloseWithError(IncompleteBody{})
			return

	//
	// Group mapping is not possible with standard X.509 certificates.
	if certificate.Subject.CommonName == "" {
		writeSTSErrorResponse(ctx, w, ErrSTSMissingParameter, errors.New("certificate subject CN cannot be empty"))
		return
	}

	expiry, err := globalIAMSys.STSTLSConfig.GetExpiryDuration(r.Form.Get(stsDurationSeconds))
	if err != nil {
		writeSTSErrorResponse(ctx, w, ErrSTSMissingParameter, err)
		return

	if !compareTags(tags2, []string{"tag1", "tag2", "tag3"}) {
		t.Fatalf("CN Blog's tags should not be changed after EN Blog Replace")
	}

	var blog11 Blog
	DB.Preload("LocaleTags").First(&blog11, "id = ? AND locale = ?", blog.ID, blog.Locale)
	if !compareTags(blog11.LocaleTags, []string{"tag1", "tag2", "tag3"}) {
		t.Fatalf("CN Blog's tags should not be changed after EN Blog Replace")
	}