[TASk] put multicast address in config file

cmd/yanic/main.go

@@ -49,6 +49,9 @@ func main() {
 	if config.Respondd.InterfaceSendMulticast == "" {
 		config.Respondd.InterfaceSendMulticast = config.Respondd.InterfaceListen
 	}
+	if config.Respondd.MulticastDestination != "" {
+		respond.MulticastGroup = config.Respondd.MulticastDestination
+	}
 
 	connections, err = allDB.Connect(config.Database.Connection)
 	if err != nil {
@@ -88,7 +91,7 @@ func main() {
 			time.Sleep(delay)
 		}
 
-		collector = respond.NewCollector(connections, nodes, config.Respondd.InterfaceListen, config.Respondd.InterfaceSendMulticast, config.Respondd.InterfaceSendUnicast, config.Respondd.Port)
+		collector = respond.NewCollector(connections, nodes, config.Respondd.InterfaceListen, config.Respondd.InterfaceSendMulticast, config.Respondd.InterfaceSendUnicast, config.Respondd.ListenPort)
 		collector.Start(config.Respondd.CollectInterval.Duration)
 		defer collector.Close()
 	}

respond/collector.go

@@ -120,7 +120,7 @@ func (coll *Collector) sendOnce() {
 func (coll *Collector) sendMulticast() {
 	log.Println("sending multicast")
 	coll.SendPacket(net.UDPAddr{
-		IP:   net.ParseIP(multiCastGroup),
+		IP:   net.ParseIP(MulticastGroup),
 		Zone: coll.ifaceSendMulticast,
 	})
 }

respond/respond.go

@@ -4,9 +4,10 @@ import (
 	"net"
 )
 
+// default multicast group used by announced
+var MulticastGroup string = "ff02:0:0:0:0:0:2:1001"
+
 const (
-	// default multicast group used by announced
-	multiCastGroup = "ff02:0:0:0:0:0:2:1001"
 
 	// default udp port used by announced
 	port = 1001

runtime/config.go

@@ -14,7 +14,8 @@ type Config struct {
 		InterfaceListen        string   `toml:"interface"`
 		InterfaceSendMulticast string   `toml:"interface_send_multicast"`
 		InterfaceSendUnicast   string   `toml:"interface_send_unicast"`
-		Port                   int      `toml:"port"`
+		ListenPort             int      `toml:"port"`
+		MulticastDestination   string   `toml:"destination"`
 		CollectInterval        Duration `toml:"collect_interval"`
 	}
 	Webserver struct {