Package upnp provides a simple and opinionated interface to UPnP-enabled routers, allowing users to forward ports and discover their external IP address.

AcquirePortFromGateway sets up UDP and TCP forwarding rules for the given port on the given gateway.

DiscoverUPNPGateway returns a UPNPGateway if one is found on the network.

GetExternalIP returns a string formatted external IP address from a UPnP-enabled NAT on the network, if such device is discovered.

UPNPGateway is the interface of a UPnP gateway.