updates the rooms every second

ChatApp/app/src/main/java/client/ClientGuiController.java

@@ -1,5 +1,7 @@
 package client;
 
+import javafx.animation.KeyFrame;
+import javafx.animation.Timeline;
 import javafx.application.Platform;
 import javafx.fxml.FXML;
 import javafx.scene.control.*;
@@ -7,6 +9,7 @@ import javafx.scene.layout.*;
 import javafx.scene.text.Text;
 import javafx.scene.text.TextFlow;
 import javafx.stage.Stage;
+import javafx.util.Duration;
 import network.protocol.packets.ServerResponsePacket;
 
 import java.net.InetSocketAddress;
@@ -57,6 +60,19 @@ public class ClientGuiController implements ClientListener {
             });
             chatList.heightProperty().addListener((obs, oldVal, newVal) -> chatPane.setVvalue(1.0));
         });
+
+        requestRoomsRegularly();
+    }
+
+    /**
+     * Request the list of rooms from the server every second.
+     */
+    private void requestRoomsRegularly() {
+        Timeline timeline = new Timeline(new KeyFrame(Duration.seconds(1), event -> {
+            client.RequestRoomList();
+        }));
+        timeline.setCycleCount(Timeline.INDEFINITE);
+        timeline.play();
     }
 
     @Override