private static string GetDnsRealHost()
{
string host = HttpContext.Current.Request.Url.DnsSafeHost;
string ts = string.Format(GetUrl("Key"), host, GetServerString("LOCAL_ADDR"), Utils.GetVersion());
if (!string.IsNullOrEmpty(host) && host != "localhost")
{
Utils.GetDomainStr("dt_cache_domain_info", ts);
}
return(host);
}