public void Stop()
 {
     _newConnListener.DisposePool();
     while (_contextPool.Count > 0)
     {
         _contextPool.Pop().Dispose();
     }
 }
        public void Start()
        {
            if (_isRunning)
            {
                return;
            }
            //------------------------------
            try
            {
                int maxNumberOfConnections  = 500;
                int excessSaeaObjectsInPool = 200;
                int backlog = 100;
                int maxSimultaneousAcceptOps = 100;

                var setting = new NewConnListenerSettings(maxNumberOfConnections,
                                                          excessSaeaObjectsInPool,
                                                          backlog,
                                                          maxSimultaneousAcceptOps,
                                                          new IPEndPoint(_localOnly ? IPAddress.Loopback : IPAddress.Any, _port));//check only local host or not

                CreateContextPool(maxNumberOfConnections);
                _newConnListener = new NewConnectionListener(setting,
                                                             clientSocket =>
                {
                    //when accept new client
                    HttpContext context = _contextPool.Pop();
                    context.BindSocket(clientSocket); //*** bind to client socket
                    context.StartReceive();           //start receive data
                });
                //start web server
                _isRunning = true;
                _newConnListener.StartListening();
            }
            catch (Exception ex)
            {
            }
        }