protected override bool Receive(object message)
{
var resolve = message as Dns.Resolve;
if (resolve != null)
{
var answer = _cache.Cached(resolve.Name);
if (answer == null)
{
try
{
//TODO: IP6
answer = Dns.Resolved.Create(resolve.Name, System.Net.Dns.GetHostEntry(resolve.Name).AddressList.Where(x => x.AddressFamily == AddressFamily.InterNetwork));
_cache.Put(answer, _positiveTtl);
}
catch (SocketException ex)
{
if (ex.SocketErrorCode != SocketError.HostNotFound)
{
throw;
}
answer = new Dns.Resolved(resolve.Name, Enumerable.Empty <IPAddress>(), Enumerable.Empty <IPAddress>());
_cache.Put(answer, _negativeTtl);
}
}
Sender.Tell(answer);
return(true);
}
return(false);
}
/// <summary>
/// TBD
/// </summary>
/// <param name="message">TBD</param>
/// <returns>TBD</returns>
protected override bool Receive(object message)
{
if (message is Dns.Resolve resolve)
{
var replyTo = Sender;
var answer = _cache.Cached(resolve.Name);
if (answer != null)
{
replyTo.Tell(answer);
return(true);
}
System.Net.Dns.GetHostEntryAsync(resolve.Name).ContinueWith(t =>
{
if (t.IsFaulted)
{
var flattened = t.Exception.Flatten().InnerExceptions;
return(flattened.Count == 1
? new Dns.Resolved(resolve.Name, flattened[0])
: new Dns.Resolved(resolve.Name, t.Exception));
}
answer = Dns.Resolved.Create(resolve.Name, t.Result.AddressList.Where(x =>
x.AddressFamily == AddressFamily.InterNetwork ||
_useIpv6 && x.AddressFamily == AddressFamily.InterNetworkV6));
_cache.Put(answer, _positiveTtl);
return(answer);
}, TaskContinuationOptions.ExecuteSynchronously).PipeTo(replyTo);
return(true);
}
return(false);
}