Print out ClientID

mqtt_presence_redis_go/mqtt_presence_redis_go.go

@@ -54,6 +54,7 @@ func main() {
     opts.SetUsername(mqttUser)
     opts.SetPassword(mqttPass)
     opts.SetClientID(fmt.Sprintf("mqtt_presence_redis_go_%s", randomString()))
+    // clientID variable removed; use opts.ClientID directly
 
     // Handlers
     opts.SetDefaultPublishHandler(func(client mqtt.Client, msg mqtt.Message) {
@@ -64,7 +65,7 @@ func main() {
         if token := c.Subscribe(mqttTopicPresence, 0, nil); token.Wait() && token.Error() != nil {
             log.Fatalf("Failed to subscribe: %v", token.Error())
         }
-        log.Printf("Connected to MQTT broker %s:%s, subscribed to %s", mqttHost, mqttPort, mqttTopicPresence)
+        log.Printf("Connected to MQTT broker %s:%s, subscribed to %s, client ID: %s", mqttHost, mqttPort, mqttTopicPresence, opts.ClientID)
     }
 
     // Create and start client