lukechampine.com/upnp

upnp

go get github.com/lukechampine/upnp

Yep, it's another package for forwarding ports and discovering your external IP address. This one has no dependencies and is ~1 MB smaller than huin/goupnp. It also offers a more flexible device scanning API: devices are returned via channel as soon as they respond (typically a few milliseconds) rather than all devices being returned after a timeout of 2 seconds (as in huin/goupnp).

Usage

// scan for router
d, _ := upnp.Discover(context.Background())

// connect to a previously-scanned router
routerURL := d.Location()
d, _ = upnp.Connect(context.Background(), routerURL)

// forward/clear a port
println(d.IsForwarded(15000, "TCP")) // false
d.Forward(15000, "TCP", "example description")
println(d.IsForwarded(15000, "TCP")) // true
d.Clear(15000, "TCP")
println(d.IsForwarded(15000, "TCP")) // false

// get external IP
ip, _ := d.ExternalIP()
println(ip)