Closable server

app/src/main/java/org/toop/app/Server.java

@@ -22,6 +22,7 @@ import org.toop.framework.game.games.tictactoe.BitboardTicTacToe;
 import org.toop.framework.game.players.ArtificialPlayer;
 import org.toop.framework.game.players.OnlinePlayer;
 import org.toop.framework.game.players.RandomAI;
+import org.toop.framework.networking.server.MasterServer;
 import org.toop.local.AppContext;
 
 import java.util.List;
@@ -32,7 +33,8 @@ import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
 
 public final class Server {
-    // TODO: Keep track of listeners. Remove them on Server connection close so reference is deleted.
+	private MasterServer masterServer;
+
 	private String user = "";
 	private long clientId = -1;
 
@@ -60,10 +62,13 @@ public final class Server {
 		return null;
 	}
 
+	public Server(String ip, String port, String user) {
+		this(ip, port, user, null);
+	}
 
     // Server has to deal with ALL network related listen events. This "server" can then interact with the manager to make stuff happen.
     // This prevents data races where events get sent to the game manager but the manager isn't ready yet.
-	public Server(String ip, String port, String user) {
+	public Server(String ip, String port, String user, MasterServer masterServer) {
 		if (ip.split("\\.").length < 4) {
 			new ErrorPopup("\"" + ip + "\" " + AppContext.getString("is-not-a-valid-ip-address"));
 			return;
@@ -83,6 +88,8 @@ public final class Server {
 			return;
 		}
 
+		this.masterServer = masterServer;
+
 		final int reconnectAttempts = 10;
 
 		LoadingWidget loading = new LoadingWidget(
@@ -281,6 +288,10 @@ public final class Server {
 		stopScheduler();
 		connectFlow.unsubscribeAll();
 
+		if (masterServer != null) {
+			masterServer.stop();
+		}
+
 		WidgetContainer.getCurrentView().transitionPrevious();
 	}
 

app/src/main/java/org/toop/app/widget/view/OnlineView.java

@@ -48,7 +48,8 @@ public class OnlineView extends ViewWidget {
 			new Server(
 					"127.0.0.1",
 					"6666",
-					"host"
+					"host",
+					a
 			);
 		}, false);
 

framework/src/main/java/org/toop/framework/networking/server/MasterServer.java

@@ -19,7 +19,11 @@ import java.util.Map;
 
 public class MasterServer {
     private final int port;
-    public final Server gs;
+    private final Server gs;
+
+    ChannelFuture future;
+    EventLoopGroup bossGroup;
+    EventLoopGroup workerGroup;
 
     public MasterServer(int port, Map<String, Class<? extends TurnBasedGame>> gameTypes, Duration challengeDuration) {
         this.port = port;
@@ -28,11 +32,10 @@ public class MasterServer {
 
     public void start() throws InterruptedException {
 
-        EventLoopGroup bossGroup = new NioEventLoopGroup(1);
+        bossGroup = new NioEventLoopGroup(1);
-        EventLoopGroup workerGroup = new MultiThreadIoEventLoopGroup(NioIoHandler.newFactory());
+        workerGroup = new MultiThreadIoEventLoopGroup(NioIoHandler.newFactory());
 
         try {
-
             ServerBootstrap bootstrap = new ServerBootstrap();
             bootstrap.group(workerGroup);
             bootstrap.channel(NioServerSocketChannel.class);
@@ -57,8 +60,7 @@ public class MasterServer {
                     }
             );
 
-            ChannelFuture future = bootstrap.bind(port).sync();
+            future = bootstrap.bind(port).sync();
-            System.out.println("MasterServer listening on port " + port);
 
             future.channel().closeFuture().sync();
         } finally {
@@ -66,4 +68,18 @@ public class MasterServer {
             workerGroup.shutdownGracefully();
         }
     }
+
+    public void stop() {
+        if (future == null) {
+            return;
+        }
+
+        future.channel().close();
+        bossGroup.shutdownGracefully();
+        workerGroup.shutdownGracefully();
+
+        future = null;
+        bossGroup = null;
+        workerGroup = null;
+    }
 }