A lightweight and easy-to-use class library to allow port forwarding in NAT devices (Network Address Translator) that support Universal Plug and Play (UPNP) and/or Port Mapping Protocol (PMP).
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$ dotnet add package SharpOpenNatReadme
SharpOpenNat
SharpOpenNat 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).
Build Status
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.
- Tested with .NET YES
How to use?
With nuget :
Install-Package SharpOpenNat
Go on the nuget website for more information.
Example
The simplest scenario:
var device = await NatDiscoverer.DiscoverDeviceAsync();
var ip = await device.GetExternalIPAsync();
Console.WriteLine("The external IP Address is: {0} ", ip);
The following piece of code shows a common scenario: It starts the discovery process for a NAT-UPNP device and onces discovered it creates a port mapping. If no device is found before ten seconds, it fails with NatDeviceNotFoundException.