C# WebSocket Fleck 呼叫非託管C++ DLL 實現通訊（使用char*接收）

 [DllImport(@"C:XXX.dll", CallingConvention = CallingConvention.StdCall)]

        unsafe public static extern int XXX(char* strin, char* strout);

        static void Main()

        {

            FleckLog.Level = LogLevel.Debug;

            var allSockets = new List<IWebSocketConnection>();

            var server = new WebSocketServer("ws://0.0.0.0:8181");

            server.Start(socket =>

            {

                socket.OnOpen = () =>

                {

                    Console.WriteLine("Open!");

                    allSockets.Add(socket);

                };

                socket.OnClose = () =>

                {

                    Console.WriteLine("Close!");

                    allSockets.Remove(socket);

                };

                socket.OnMessage = message =>

                {

                    Console.WriteLine(message);

                    message = getDate(message);

                    socket.Send(message);

                };

            });

            var input = Console.ReadLine();

            while (input != "exit")

            {

                input = Console.ReadLine();

            }

        }

    unsafe private static string getData(string message)

        {

            char* ptrIn = (char*)Marshal.StringToHGlobalAnsi(message).ToPointer();

            string result = string.Empty;

            fixed (char* ptrOut = result)

            {

                //該區域中ptrOut始終指向託管字串test

                var aa = XXX(ptrIn, ptrOut);

                result = Marshal.PtrToStringAnsi((IntPtr)ptrOut);

            }

Convert.ToString(Marshal.PtrToStringAnsi((IntPtr)q));

            if (result.Substring(, ) != "")

            {

                result = "獲取失敗";

            }

            return result;

        }