Add example of using internetgateway1.

cmd/example_internetgateway1/example_internetgateway1.go

@@ -0,0 +1,67 @@
+package main
+
+import (
+	"fmt"
+	"log"
+
+	"github.com/huin/goupnp/dcps/internetgateway1"
+)
+
+func main() {
+	clients, errors, err := internetgateway1.NewWANPPPConnection1Clients()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	fmt.Printf("Got %d errors finding servers and %d successfully discovered.\n",
+		len(errors), len(clients))
+	for i, e := range errors {
+		fmt.Printf("Error finding server #%d: %v\n", i+1, e)
+	}
+
+	for _, c := range clients {
+		dev := &c.ServiceClient.RootDevice.Device
+		srv := &c.ServiceClient.Service
+		fmt.Println(dev.FriendlyName, " :: ", srv.String())
+		scpd, err := srv.RequestSCDP()
+		if err != nil {
+			fmt.Printf("  Error requesting service SCPD: %v\n", err)
+		} else {
+			fmt.Println("  Available actions:")
+			for _, action := range scpd.Actions {
+				fmt.Printf("  * %s\n", action.Name)
+				for _, arg := range action.Arguments {
+					var varDesc string
+					if stateVar := scpd.GetStateVariable(arg.RelatedStateVariable); stateVar != nil {
+						varDesc = fmt.Sprintf(" (%s)", stateVar.DataType.Name)
+					}
+					fmt.Printf("    * [%s] %s%s\n", arg.Direction, arg.Name, varDesc)
+				}
+			}
+		}
+
+		if scpd == nil || scpd.GetAction("GetExternalIPAddress") != nil {
+			ip, err := c.GetExternalIPAddress()
+			fmt.Println("GetExternalIPAddress: ", ip, err)
+		}
+
+		if scpd == nil || scpd.GetAction("GetStatusInfo") != nil {
+			status, lastErr, uptime, err := c.GetStatusInfo()
+			fmt.Println("GetStatusInfo: ", status, lastErr, uptime, err)
+		}
+
+		if scpd == nil || scpd.GetAction("GetIdleDisconnectTime") != nil {
+			idleTime, err := c.GetIdleDisconnectTime()
+			fmt.Println("GetIdleDisconnectTime: ", idleTime, err)
+		}
+
+		if scpd == nil || scpd.GetAction("AddPortMapping") != nil {
+			err := c.AddPortMapping("", 5000, "TCP", 5001, "192.168.1.2", true, "Test port mapping", 0)
+			fmt.Println("AddPortMapping: ", err)
+		}
+		if scpd == nil || scpd.GetAction("DeletePortMapping") != nil {
+			err := c.DeletePortMapping("", 5000, "TCP")
+			fmt.Println("DeletePortMapping: ", err)
+		}
+	}
+}