u, err := url.Parse(urlStr)
	if err != nil {
		// Mark offline, with no reconnection attempts.
		connected = int32(offline)
		err = &url.Error{URL: urlStr, Err: err}
	}
	// The host's colon:port should be normalized. See Issue 14836.
	u.Host = removeEmptyPort(u.Host)

	// Transport is exactly same as Go default in https://golang.org/pkg/net/http/#RoundTripper
	// except custom DialContext and TLSClientConfig.
	clnt := &Client{

	// check for quoted string (string may not contain a quote)
	if match, err := regexp.MatchString("^\"[^\"]+\"$", name); err != nil {
		return err
	} else if match {
		return nil
	}

	// normalize the name to letters, digits, _ or $
	valid := true
	cleaned := strings.Map(func(r rune) rune {
		switch {
		case unicode.IsLetter(r):
			return 'a'
		case unicode.IsDigit(r):
			return '0'

// server is canonical. Additionally, the attribute type names in the DN are
// lower-cased.
//
// Return values:
//
// If the DN is found, the normalized (string) value is returned and error is
// nil.
//
// If the DN is not found, the string returned is empty and the error is nil.
//
// The returned boolean is true iff the DN is found under one of the LDAP

		}
		ep = ep[1:]
	}
	return ep
}

// unescapeGeneric is similar to url.PathUnescape or url.QueryUnescape
// depending on input, additionally also handles situations such as
// `//` are normalized as `/`, also removes any `/` prefix before
// returning.
func unescapeGeneric(p string, escapeFn func(string) (string, error)) (string, error) {
	ep, err := escapeFn(p)
	if err != nil {
		return "", err
	}