[skip ci] GSDumpGUI: Fixes multiinstance crashes. (#2925)

- automatically find the next free TCP port yielded by OS
- transfering currently used instance-fixed port to launched clients
- connect each client via given port

See #1637

tools/GSDumpGUI/Core/Program.cs

@@ -52,16 +52,17 @@ namespace GSDumpGUI
         [STAThread]
         static void Main(String[] args)
         {
-            if (args.Length == 4)
+            if (args.Length == 5)
             {
                 // do this first, else racy mess ;)
                 wrap = new GSDXWrapper();
+                var port = Convert.ToInt32(args[4]);
 
                 try
                 {
                     Client = new TCPLibrary.MessageBased.Core.BaseMessageClient();
                     Client.OnMessageReceived += new TCPLibrary.MessageBased.Core.BaseMessageClient.MessageReceivedHandler(Client_OnMessageReceived);
-                    Client.Connect("localhost", 9999);
+                    Client.Connect("localhost", port);
                 }
                 catch (Exception)
                 {
@@ -137,7 +138,6 @@ namespace GSDumpGUI
                 Server.OnClientMessageReceived += new BaseMessageServer.MessageReceivedHandler(Server_OnClientMessageReceived);
                 Server.OnClientAfterConnect += new TCPLibrary.Core.Server.ConnectedHandler(Server_OnClientAfterConnect);
                 Server.OnClientAfterDisconnected += new TCPLibrary.Core.Server.DisconnectedHandler(Server_OnClientAfterDisconnected);
-                Server.Port = 9999;
                 Server.Enabled = true;
 
                 Application.EnableVisualStyles();

tools/GSDumpGUI/Forms/frmMain.cs

@@ -238,6 +238,7 @@ namespace GSDumpGUI
             if (lstDumps.SelectedItem != null)
                 DumpPath = Properties.Settings.Default.DumpDir + "\\" + 
                            lstDumps.SelectedItem.ToString().Split(new char[] { '|' })[0];
+            var port = Program.Server.Port;
 
             // Start the child and link the events.
             ProcessStartInfo psi = new ProcessStartInfo();
@@ -246,7 +247,7 @@ namespace GSDumpGUI
             psi.RedirectStandardError = false;
             psi.CreateNoWindow = true;
             psi.FileName = Process.GetCurrentProcess().ProcessName;
-            psi.Arguments = "\"" + DLLPath + "\"" + " \"" + DumpPath + "\"" + " \"" + Function + "\"" + " " + SelectedRenderer;
+            psi.Arguments = "\"" + DLLPath + "\"" + " \"" + DumpPath + "\"" + " \"" + Function + "\"" + " " + SelectedRenderer + " " + port;
             Process p = Process.Start(psi);
             p.OutputDataReceived += new DataReceivedEventHandler(p_OutputDataReceived);
             p.BeginOutputReadLine();

tools/GSDumpGUI/Library/TCPLibrary/Base/Server.cs

@@ -42,10 +42,6 @@ namespace TCPLibrary.Core
         /// </summary>
         private TcpListener _socket;
         /// <summary>
-        /// Port to which the server will listen.
-        /// </summary>
-        private Int32 _port;
-        /// <summary>
         /// Whether the server is enabled or not.
         /// </summary>
         private Boolean _enabled;
@@ -132,13 +128,11 @@ namespace TCPLibrary.Core
         /// <exception cref="TCPLibrary.Core.ServerAttivoException" />
         public Int32 Port
         {
-            get { return _port; }
-            set
+            get
             {
-                if (Enabled == false)
-                    _port = value;
-                else
-                    throw new ArgumentException("Impossibile eseguire l'operazione a server attivo");
+                if (Enabled)
+                    return ((IPEndPoint) _socket.LocalEndpoint).Port;
+                throw new NotSupportedException("Server is not running and hence has no port.");
             }
         }
 
@@ -212,10 +206,10 @@ namespace TCPLibrary.Core
         /// </summary>
         protected virtual void ActivateServer()
         {
-            _socket = new TcpListener(IPAddress.Any, Port);
+            _socket = new TcpListener(IPAddress.Any, 0);
             _socket.Start(ConnectionBackLog);
             Thread thd = new Thread(new ThreadStart(MainThread));
-            thd.Name = "Server on port " + Port.ToString();
+            thd.Name = "Server on port " + ((IPEndPoint) _socket.LocalEndpoint).Port;
             thd.IsBackground = true;
             thd.Start();
             _enabled = true;
@@ -249,7 +243,6 @@ namespace TCPLibrary.Core
         public Server()
         {
             _clients = new List<ClientS>();
-            _port = 0;
             _connectionbacklog = 0;
             _enabled = false;
         }