private async Task <IP4Addr> Resolve(ParsedDomain domain)
{
if (domain.IsTopLevelDomain())
{
int rootServerIndex = Interlocked.Increment(ref rootServerCounter) % dnsClient.GetRootServers().Count;
IP4Addr rootServerIP = dnsClient.GetRootServers()[rootServerIndex];
return(dnsClient.Resolve(rootServerIP, domain.GetThisLevelSubdomain()).Result);
}
else
{
var upperLevelIP = await AssignResolverAndResolve(domain.GetUpperLevel());
return(dnsClient.Resolve(upperLevelIP, domain.GetThisLevelSubdomain()).Result);
}
}
public Task <IP4Addr> ResolveRecursive(string domain)
{
return(Task <IP4Addr> .Run(() => {
string[] domains = domain.Split('.');
Array.Reverse(domains);
IP4Addr res = dnsClient.GetRootServers()[0];
foreach (var sub in domains)
{
var t = dnsClient.Resolve(res, sub);
t.Wait();
res = t.Result;
}
return res;
}));
}
private IP4Addr ResolveWithCache(string domain)
{
IP4Addr res = dnsClient.GetRootServers()[0];
return(resolveSubDomain(domain, res));
}