Fix: ClientLauncher local IP select

src/main/java/it/polimi/ingsw/gc14/ClientLauncherTUI.java

@@ -5,7 +5,11 @@ import it.polimi.ingsw.gc14.Network.RMI.Client.RMIClient;
 import it.polimi.ingsw.gc14.Network.TCP.Client.TCPClient;
 import it.polimi.ingsw.gc14.View.TUI.TUI;
 
+import java.net.Inet4Address;
+import java.net.InetAddress;
+import java.net.NetworkInterface;
 import java.util.ArrayList;
+import java.util.Enumeration;
 import java.util.List;
 import java.util.Scanner;
 
@@ -65,7 +69,13 @@ public class ClientLauncherTUI {
         // RMI
         if (networkType == 0) {
             // Connect
-            RMIClient client = new RMIClient(controller, IP, 1099);
+            String myIP;
+            try {
+                myIP = chooseNetworkInterface(scanner);
+            } catch (Exception e) {
+                throw new RuntimeException(e);
+            }
+            RMIClient client = new RMIClient(controller, IP, 1099, myIP);
             if (client.connect(username, proposedNumPlayers)) {
                 System.out.println("Succesfully connected to RMI server\n\n");
             } else {
@@ -159,4 +169,37 @@ public class ClientLauncherTUI {
             view.showError("ERROR: Invalid input(action not valid)");
         }
     }
+
+    public static String chooseNetworkInterface(Scanner scanner) throws Exception {
+        List<String> ips = new ArrayList<>();
+
+        // Lista tutte le interfacce attive con IP reale
+        Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
+        while (interfaces.hasMoreElements()) {
+            NetworkInterface ni = interfaces.nextElement();
+
+            // Salta loopback, interfacce spente o virtuali
+            if (!ni.isUp() || ni.isLoopback() || ni.isVirtual()) continue;
+
+            Enumeration<InetAddress> addresses = ni.getInetAddresses();
+            while (addresses.hasMoreElements()) {
+                InetAddress addr = addresses.nextElement();
+                // Solo IPv4
+                if (addr instanceof Inet4Address) {
+                    System.out.println("[" + ips.size() + "] " + ni.getDisplayName() + " -> " + addr.getHostAddress());
+                    ips.add(addr.getHostAddress());
+                }
+            }
+        }
+
+        if (ips.isEmpty()) throw new Exception("Nessuna interfaccia disponibile");
+        if (ips.size() == 1) {
+            System.out.println("Una sola interfaccia trovata, uso: " + ips.get(0));
+            return ips.get(0);
+        }
+
+        System.out.print("Scegli interfaccia: ");
+        int choice = scanner.nextInt();
+        return ips.get(choice);
+    }
 }

src/main/java/it/polimi/ingsw/gc14/Network/RMI/Client/RMIClient.java

@@ -30,6 +30,7 @@ public class RMIClient  implements IClient {
     /** Client game's controller */
     ClientController controller;
 
+    private String myIP;
 
     /**
      * Class constructor.
@@ -37,10 +38,11 @@ public class RMIClient  implements IClient {
      * @param host the host address of the RMI server
      * @param port the port of the RMI server
      */
-    public RMIClient(ClientController controller, String host, int port) {
+    public RMIClient(ClientController controller, String host, int port, String myIP) {
         this.controller=controller;
         this.host = host;
         this.port = port;
+        this.myIP = myIP;
     }
 
 
@@ -54,8 +56,7 @@ public class RMIClient  implements IClient {
      */
     public boolean connect(String username,int preferredInt) {
         try {
-            String ip = InetAddress.getLocalHost().getHostAddress();
-            System.setProperty("java.rmi.server.hostname", ip);
+            System.setProperty("java.rmi.server.hostname", this.myIP);
             Registry registry = LocateRegistry.getRegistry(host, port);
             this.stub = (IGameServer) registry.lookup("RMIGameServer");
             ClientCallbackImpl callback = new ClientCallbackImpl(controller);