/// <summary>
/// 获取延迟
/// </summary>
/// <param name="s"></param>
/// <returns></returns>
public static int Fetch(Models.Server.Server s)
{
/*
* -1 : Not Test
* -2 : DNS Exception
* -3 : Exception
* 999 : Timeout
*/
try
{
var addr = DNS.Fetch(s.Host);
if (addr == IPAddress.Any)
{
return(-2);
}
if (Cache.Contains(addr))
{
var rule = Cache[addr] as CacheEntry;
if (DateTimeOffset.Now.ToUnixTimeSeconds() - rule.Unix < 30)
{
return(rule.Time);
}
else
{
Cache.Remove(addr);
}
}
var time = 0;
if (Global.Config.Generic.ICMPing)
{
time = ICMPing(addr);
}
else
{
return(TCPPing(addr, s.Port));
}
Cache.Add(addr, new CacheEntry()
{
Unix = DateTimeOffset.Now.ToUnixTimeSeconds(), Time = time
});
return(time);
}
catch (Exception e)
{
Global.Logger.Warning(e.ToString());
return(-3);
}
}
public static string GetCityCode(string Hostname)
{
if (Hostname.Contains(":"))
{
Hostname = Hostname.Split(':')[0];
}
string Country;
try
{
var databaseReader = new DatabaseReader("bin\\GeoLite2-Country.mmdb");
if (IPAddress.TryParse(Hostname, out _))
{
Country = databaseReader.Country(Hostname).Country.IsoCode;
}
else
{
var DnsResult = DNS.Lookup(Hostname);
if (DnsResult != null)
{
Country = databaseReader.Country(DnsResult).Country.IsoCode;
}
else
{
Country = "Unknown";
}
}
}
catch (Exception)
{
Country = "Unknown";
}
return(Country == null ? "Unknown" : Country);
}