DNS dislove

gistfile1.cs

		void ParseHost(string host, TimeSpan timeSpan, Action<Exception, string, IPAddress> callback)
		{
			IPAddress ipaddress;
			if (IPAddress.TryParse(host, out ipaddress)) {
				callback(null, host, ipaddress);
			} else {
				bool timeout = false;
				Context.CreateTimerWatcher(timeSpan, delegate {
					callback(new Exception("Timeout while resolving"), null, null);
					timeout = true;
				});
				
				Dns.BeginGetHostAddresses(host, (ar) => {
					IPAddress[] list = null;
					try {
						list = Dns.EndGetHostAddresses(ar);
					} catch (Exception exception) {
						callback(exception, null, null);
					} finally {
						if (list != null) {
							Manos.Threading.Boundary.Instance.ExecuteOnTargetLoop(delegate {
								if (timeout) {
									return;	
								}
								if (list.Length == 0) {
									callback(new Exception(string.Format("Couldn't resolve {0}", host)), null, null);
								} else {
									ipaddress = list.First();
									callback(null, host, ipaddress);
								}
							});
						}
					}
				}, null);
			}
		}