c# - 套接字等待接受关闭堆栈

Question

当我尝试关闭表单时遇到了这个问题

当我运行服务器时并且线程启动套接字等待接受在我打开服务器之后我尝试关闭服务器这不可以，它堆叠在 NewCon.Abort() 中；

请帮帮我

代码是:

 private void ServerOn_Click(object sender, EventArgs e)
    {
        sckServerSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
        sckServerSocket.Bind(new IPEndPoint(ip, port));
        sckServerSocket.Listen(0);
        bIsOn = true;
        dicStudent = new Dictionary<Socket, Student>();
        NewCon = new Thread(getNewConnection);
        NewCon.Start();
    }

    public void getNewConnection()
    {
        while (true)
        {
                Socket sckReciveConnect = sckServerSocket.Accept();
                dicStudent.Add(sckReciveConnect, new Student(sckReciveConnect, this));
        }
    }

 private void ServerOut_FormClosing(object sender, FormClosingEventArgs e)
    {
        if (bIsOn)
        {
            try
            {
              --->  NewCon.Abort();
                sckServerSocket.Close();

                foreach (Student stu in dicStudent.Values)
                {
                    byte[] Close = Encoding.Default.GetBytes("EXT");
                    stu.scksReciveSocket.Send(Close, 0, Close.Length, 0);
                }

                this.Close();
            }
            catch  (Exception x)
            {
                MessageBox.Show(x.Message);
            }
        }
    }

Answer 1

不要试图杀死线程。只需对服务器调用 Close()，这将导致阻塞的 Accept() 调用退出并出现异常:

// NewCon.Abort(); <-- don't do this
sckServerSocket.Close(); // just close it

您可以捕获它并跳出循环:

    public void getNewConnection()
    {
        while (true)
        {
            try
            {
                Socket sckReciveConnect = sckServerSocket.Accept();
                // ...
            }
            catch (Exception)
            {
                return; // drop out of loop
            }
        }
    }