Open.Nat

Open.Nat is a lightweight and easy-to-use class library to allow port forwarding in NAT devices that support UPNP (Universal Plug & Play) and/or PMP (Port Mapping Protocol).

Goals

NATed computers cannot be reached from outside and this is particularly painful for peer-to-peer or friend-to-friend software. The main goal is to simplify communication amoung computers behind NAT devices that support UPNP and/or PMP providing a clean and easy interface to get the external IP address and map ports and helping you to achieve peer-to-peer communication.

Example

NatUtility.DeviceFound += (sender, args) => {
  Console.WriteLine("It got it!!");
  var ip = await device.GetExternalIPAsync();
  Console.WriteLine("The external IP Address is: " + ip);
};

NatUtility.Initialize();
NatUtility.StartDiscovery();

Development

Open.Nat is been developed by Lucas Ontivero (@lontivero). You are welcome to contribute code. You can send code both as a patch or a GitHub pull request.

Build Status