Fix P2P discovery and networking

QemuVmManager.Console/P2PConsole.cs

@@ -109,6 +109,9 @@ public class P2PConsole
                     case "upnp":
                         await ShowUPnPStatusAsync();
                         break;
+                    case "discovery":
+                        await ShowDiscoveryInfoAsync();
+                        break;
                     case "exit":
                     case "quit":
                         System.Console.WriteLine("Stopping P2P node...");
@@ -144,6 +147,7 @@ public class P2PConsole
         System.Console.WriteLine("  migrate <vm-id> <node-id> - Migrate VM to different node");
         System.Console.WriteLine("  forward <vm-id> <port>    - Forward port for VM (master only)");
         System.Console.WriteLine("  upnp                      - Show UPnP status");
+        System.Console.WriteLine("  discovery                 - Show network discovery information");
         System.Console.WriteLine("  help                      - Show this help");
         System.Console.WriteLine("  exit/quit                 - Exit the application");
     }
@@ -518,4 +522,51 @@ public class P2PConsole
         var input = System.Console.ReadLine()?.Trim();
         return string.IsNullOrEmpty(input) ? defaultValue : input;
     }
+
+    private async Task ShowDiscoveryInfoAsync()
+    {
+        System.Console.WriteLine("=== Network Discovery Information ===");
+        System.Console.WriteLine($"Current Node ID: {_p2pNode.CurrentNode.NodeId}");
+        System.Console.WriteLine($"Current Node IP: {_p2pNode.CurrentNode.IpAddress}");
+        System.Console.WriteLine($"Current Node Port: {_p2pNode.CurrentNode.Port}");
+        System.Console.WriteLine($"Current Role: {_p2pNode.CurrentNode.Role}");
+        System.Console.WriteLine($"Is Master: {_p2pNode.IsMaster}");
+        System.Console.WriteLine();
+        
+        // Get cluster state to show known nodes
+        var cluster = _p2pNode.ClusterState;
+        System.Console.WriteLine($"Known Nodes: {cluster.Nodes.Count}");
+        
+        if (cluster.Nodes.Count > 0)
+        {
+            System.Console.WriteLine();
+            System.Console.WriteLine("=== Known Nodes ===");
+            System.Console.WriteLine($"{"Node ID",-20} {"IP Address",-15} {"Port",-8} {"Role",-10} {"Last Seen"}");
+            System.Console.WriteLine(new string('-', 80));
+            
+            foreach (var node in cluster.Nodes.Values)
+            {
+                var lastSeen = node.LastSeen.ToString("HH:mm:ss");
+                System.Console.WriteLine($"{node.NodeId,-20} {node.IpAddress,-15} {node.Port,-8} {node.Role,-10} {lastSeen}");
+            }
+        }
+        else
+        {
+            System.Console.WriteLine("No other nodes discovered yet.");
+            System.Console.WriteLine();
+            System.Console.WriteLine("Discovery troubleshooting:");
+            System.Console.WriteLine("1. Make sure other nodes are running on the same network");
+            System.Console.WriteLine("2. Check if firewall is blocking UDP port 8080");
+            System.Console.WriteLine("3. Try running multiple instances on different machines");
+            System.Console.WriteLine("4. Check network connectivity between nodes");
+        }
+        
+        System.Console.WriteLine();
+        System.Console.WriteLine("=== Network Configuration ===");
+        System.Console.WriteLine("UDP Discovery: Enabled (port 8080)");
+        System.Console.WriteLine("TCP Communication: Enabled (port 8081)");
+        System.Console.WriteLine("Heartbeat Interval: 5 seconds");
+        System.Console.WriteLine("Discovery Interval: 30 seconds");
+        System.Console.WriteLine("Node Timeout: 30 seconds");
+    }
 }