System.Net.Sockets.TcpListener.Start C# (CSharp) Méthode

        public void Start(int backlog)
        {
            if (backlog > (int)SocketOptionName.MaxConnections || backlog < 0)
            {
                throw new ArgumentOutOfRangeException(nameof(backlog));
            }

            if (NetEventSource.IsEnabled) NetEventSource.Enter(this);

            if (_serverSocket == null)
            {
                throw new InvalidOperationException(SR.net_InvalidSocketHandle);
            }

            // Already listening.
            if (_active)
            {
                if (NetEventSource.IsEnabled) NetEventSource.Exit(this);
                return;
            }

            _serverSocket.Bind(_serverSocketEP);
            try
            {
                _serverSocket.Listen(backlog);
            }
            catch (SocketException)
            {
                // When there is an exception, unwind previous actions (bind, etc).
                Stop();
                throw;
            }

            _active = true;
            if (NetEventSource.IsEnabled) NetEventSource.Exit(this);
        }

        public ServerContext(int port, int maxclients, ref List<string> TextStack, string OwnIP)
        {
            BeginSendUdpServerCallback = new AsyncCallback(OnBeginSendUdpServerCallbackFinished);
            ServerMessage = System.Text.Encoding.ASCII.GetBytes("OK:" + OwnIP);

            UdpServer = new UdpClient(new IPEndPoint(IPAddress.Any, 8011)); //da bei xp fehler

            UdpServer.JoinMulticastGroup(BroadcastServer.Address);

            UdpServer.BeginSend(ServerMessage, ServerMessage.Length, BroadcastServer, BeginSendUdpServerCallback, null);

            MaxClients = maxclients;

            Ip = IPAddress.Any;
            this.Port = port;

            listener = new TcpListener(Ip, Port);
            Clients = new List<ClientContext>(MaxClients);

            listener.Start();

            BeginAcceptSocketCallback = new AsyncCallback(OnClientConnected);

            this.TextStack = TextStack;
        }