add resubscribe (in progress)

fix crash when no bus found in map

main.go

@@ -21,6 +21,7 @@ func main() {
 	serverPort := flag.Uint("serverPort", 8100, "port of server")
 	wsPort := flag.Uint("port", 8200, "websocket port")
 	debug := flag.Bool("debug", false, "debug logging")
+	start := flag.Bool("start", false, "starts all buses on startup")
 	flag.Parse()
 
 	//change working directory only if value is given
@@ -47,6 +48,7 @@ func main() {
 	s.Routes.POST("/buses/start", artNetDriver.Start)
 	s.Routes.POST("/buses/status", artNetDriver.Status)
 	s.Routes.POST("/buses/stop", artNetDriver.Stop)
+	s.Routes.POST("/buses/resubscribe", artNetDriver.Resubscribe)
 
 	s.Routes.GET("/", func(c *gin.Context) {
 		c.String(200, "ArtNet Driver WebSocket Server is running!")
@@ -58,7 +60,16 @@ func main() {
 		}
 	}()
 
-	artNetDriver.Log.Info("main", fmt.Sprintf("connect to server  ws://%s:%d with id %s", *serverIp, serverPort, DriverName))
+	artNetDriver.Log.Info("main", fmt.Sprintf("connect to server  ws://%s:%d with id %s", *serverIp, *serverPort, DriverName))
+
+	if *start {
+		for busName, bus := range artNetDriver.Buses {
+			artNetDriver.Log.Info("main", fmt.Sprintf("starting bus %s", busName))
+			// start bus and listen to subscriptions
+			bus.Start(artNetDriver.Log)
+		}
+	}
+
 	// connect to server
 	for {
 		artNetDriver.Log.Error("main", artNetDriver.Connect(*serverIp, DriverName, *serverPort))