Question

我有一个服务器和2个winform客户端（用于tictactoegame）。我可以立即检测到客户端断开连接吗？首先打开的客户端是player1套接字，第二个是player2。一旦两个客户端连接，player1必须单击一个按钮，并且播放器2按钮全部被禁用。在player1点击一个按钮后，播放器2按钮被启用，播放器1按钮被禁用...等等

isConnected方法

public  bool IsConnected(Socket socket)
{
    try
    {
        return !(socket.Poll(1, SelectMode.SelectRead) && socket.Available == 0);
    }
    catch (SocketException) { return false; }
}

服务器代码

public class ServerApp
{
    public Socket serverSocket;

    Socket player1;
    Socket player2;
    ServerGame myGame;

    public ServerApp()
    {
        myGame = new ServerGame();
        serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, 
                                  ProtocolType.Tcp);
        IPEndPoint ipLocal = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 8221);
        serverSocket.Bind(ipLocal);
        serverSocket.Listen(4);

        Console.WriteLine("Waiting for clients ...");
        player1 = serverSocket.Accept();
        Console.WriteLine("Player 1 joined");
        player2 = serverSocket.Accept();
        Console.WriteLine("Player 2 joined");

        myGame.InitGame();

        while (true)
        {
            try
            {
                myGame.Display();
                Console.WriteLine();

                myGame.Send(player1, BaseGame.Player.One);
                myGame.Send(player2, BaseGame.Player.Two);

                if (myGame.GetActivePlayer() == BaseGame.Player.One && 
                    myGame.IsConnected(player1)==true)
                {
                    myGame.Receive(player1);                       
                }
                else if(myGame.IsConnected(player1) == true)
                {
                    myGame.Receive(player2);
                }
            }
            catch(Exception e)
            {
                Console.WriteLine(e);
                Thread.Sleep(1000);                    
            }
        }

        Console.WriteLine("Server going down");
        Thread.Sleep(2000);
    }
}

class Program
{
    static void Main(string[] args)
    {
        ServerApp serverApp = new ServerApp();
    }
}

Answer 1

关闭的播放器应该在退出之前正常关闭套接字。这涉及调用Socket.Shutdown(SocketShutdown.Send)，然后等待接收操作返回0的字节计数（表示远程客户端也已关闭）。

这将确保及时关闭连接。否则，其他未关闭的玩家将无法知道连接是否已丢失，直到他们尝试发送一些数据为止。

c＃检测客户端与服务器的连接

1 个答案: