Question

我希望我的服务器在没有连接请求的情况下在一分钟后停止收听。问题是在命令AcceptTcpClient（）之后它进入一个循环，没有选项来阻止它。可以选择这样做吗？

private static void Listen(TcpListener listener)
    {
        //Start listening
        listener.Start();
        Console.WriteLine("Waiting for a connection...\n");

        //Accept connection
        TcpClient client = listener.AcceptTcpClient();

        //Need to stop it after 1 minute.

        listener.Stop();
        //CHECK
        Console.WriteLine("Accepted the connection\n");

        ClientHandle(client);

    }

Answer 1

有几种方法可以做到：

1）异步等待而不阻塞线程：

private static async Task Listen(TcpListener listener)
{
    //Start listening
    listener.Start();
    Console.WriteLine("Waiting for a connection...\n");

    //Accept connection
    TcpClient client = listener.AcceptTcpClient();

    await Task.Delay(60000); // async wait for 1 minute

    listener.Stop();
    //CHECK
    Console.WriteLine("Accepted the connection\n");

    ClientHandle(client);
}

不要忘记等待来自调用方的这个方法：

await Listen(yourListener);

2）使用Timer (System.Threading.Timer)：

private static void Listen(TcpListener listener)
{        
    //Start listening
    listener.Start();

    var timerTimer = new Timer((state) => { listener.Stop(); }, null, 60000, Timeout.Infinite);

    Console.WriteLine("Waiting for a connection...\n");

    //Accept connection
    TcpClient client = listener.AcceptTcpClient();

    //CHECK
    Console.WriteLine("Accepted the connection\n");

    ClientHandle(client);
}

您还可以使用任何其他计时器。

Answer 2

TcpListener server = new TcpListener(......);
TcpClient client = null;
int timeout = 30000;//30 sec
server.Start();
using(CancellationTokenSource tokenSource = new CancellationTokenSource(timeout))
{
    using(tokenSource.Token.Register(() => server.Stop()))
    {
       client = server.AcceptTcpClient();
       //don't code here, need dispose Token.Register if Accept success
    }
}
//todo here

在确定的时间

2 个答案: