gistfile1.cs

public class Test {
    private static List<Tuple<Protocol, int>> PortMapRequirements = new List<Tuple<Protocol, int>>();
    private static bool _timeOutFinished = false;
    private static List<Task> _portMapStatus = new List<Task>();


    public static void Initialize() {
        PortMapRequirements.Add(new Tuple<Protocol, int>(Protocol.Udp, 27015));
        PortMapRequirements.Add(new Tuple<Protocol, int>(Protocol.Udp, 27016));
        //PortMapRequirements.Add(new Tuple<Protocol, int>(Protocol.Tcp, 27015));
        //PortMapRequirements.Add(new Tuple<Protocol, int>(Protocol.Tcp, 27016));

        //NatUtility.TraceSource.Switch.Level = SourceLevels.All;
        //NatUtility.TraceSource.Listeners.Add(ccl);
        NatUtility.PortMapper           = PortMapper.Upnp;
        NatUtility.DeviceFound          += DeviceFound;
        NatUtility.DiscoveryTimedout    += DiscoveryTimedout;
        NatUtility.DiscoveryTimeout     = 10000; // Seconds // TODO make this smaller once the slow port map issue is fixed.
        NatUtility.ReleaseOnShutdown    = false;
        NatUtility.AutoRenewMappings    = false;
        NatUtility.Initialize();
        NatUtility.StartDiscovery();
    }

    public static bool IsFinished() {
        //if(!_timeOutFinished)
        //    return false;

        // The portmap tasks seem to appear completed when they're really not.
        foreach (var portMapStatus in _portMapStatus) {
            if (portMapStatus.IsCompleted == false)
                return false;
        }

        return true;
    }

    private static async void DeviceFound(object sender, DeviceEventArgs args) {
        var device = args.Device;

        foreach (var portMap in PortMapRequirements) {
            var protocol    = portMap.Item1;
            var port        = portMap.Item2;
            var lifetime    = 0; //8*60*60*1000; // 8 hours
            var description = GameManager.GameName;

            try {
                _portMapStatus.Add(device.DeletePortMapAsync(new Mapping(protocol, port, port, lifetime, description)));
            } catch {}
            try {
                _portMapStatus.Add(device.CreatePortMapAsync(new Mapping(protocol, port, port, lifetime, description)));
            } catch {}
        }
    }

    static void DiscoveryTimedout(object sender, DiscoveryTimeoutEventArgs e) {
        _timeOutFinished = true;
    }
}