/**
         * Converts ASCII URLs to RFC 3490-compatible ponycode URLs.
         * i.e. http://türkçeisimtescil.com/
         * will be converted to http://xn--trkeisimtescil-ijb74a.com
         *
         * @param url
         * @return
         */
        public static String convertUnicodeUrlToPonycode(String url) {
            String separator = "://";
            String protocol = url.substring(0, url.indexOf(separator));
            String rest = url.substring(url.indexOf(separator) + separator.length(), url.length());
            String result = (protocol + separator + IDN.toASCII(rest));
            return result;
        }