/*package server
import (
    "fmt"

    "github.com/jackpal/gateway"
    natpmp "github.com/jackpal/go-nat-pmp"
)

func main() {
    gatewayIP, err := gateway.DiscoverGateway()
    if err != nil {
        return
    }

    client := natpmp.NewClient(gatewayIP)
    response, err := client.GetExternalAddress()
    if err != nil {
		fmt.Print(err)
		return
    }
    fmt.Printf("External IP address: %v\n", response.ExternalIPAddress)
}*/