WPF 服务器应用程序

本文关键字:应用程序 服务器 WPF | 更新日期: 2023-09-27 17:56:49

我有一个WPF服务器和客户端应用程序。当我启动服务器时,它开始侦听传入的消息。但是,无法触摸或关闭应用程序,它会"卡住"在侦听中。我必须补充一点,它在处理消息等方面做了它应该做的事情。但我就是无法与表单交互。它与异步服务器套接字有关吗?我不确定要寻找什么...

这是我的服务器代码:

    private void startServer()
    {
        sck = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
        sck.Bind(new IPEndPoint(0, serverPort));
        sck.Listen(100);
        while (true)
        {
            Socket accepted = sck.Accept();
            Buffer = new byte[accepted.SendBufferSize];
            int bytesRead = accepted.Receive(Buffer);
            byte[] formatted = new byte[bytesRead];
            for (int i = 0; i < bytesRead; i++)
            {
                formatted[i] = Buffer[i];
            }
            string command = Encoding.ASCII.GetString(formatted);
            string[] splittedCommand = command.Split(' ');
            jobsHistory.Items.Add(Encoding.ASCII.GetString(formatted));
            jobsHistory.Refresh();
            Process processToRun = new Process();
            processToRun.StartInfo.FileName = splittedCommand[0];
            processToRun.StartInfo.WorkingDirectory = Path.GetDirectoryName(splittedCommand[0]);
            processToRun.StartInfo.Arguments = "";
            for (int i = 1; i < splittedCommand.Length; i++)
            {
                processToRun.StartInfo.Arguments += " " + splittedCommand[i];
            }
            processToRun.Start();
            accepted.Close();
        }
    }

WPF 服务器应用程序

如果这适用于 UI 线程,那么您正在将其捆绑在循环中。它没有机会处理任何 UI 事件。除此之外,Socket.Receive还有一个阻止呼叫。

在这个网站和谷歌上都有许多关于BackgroundWorker类的文章。我建议你研究一下这些。

应使用 BeginAccept 在后台接受连接,而不会阻止 UI 线程。当客户端被接受时,再次调用BeginAccept - 这将创建一个"循环"。然后,您可以删除while循环。

startServer方法可能如下所示:

private void startServer()
{
    sck = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
    sck.Bind(new IPEndPoint(0, serverPort));
    sck.Listen(100);
    sck.BeginAccept(Accepted, sck);
}

然后,在 Accepted 方法中,执行以下操作:

private void Accepted(IAsyncResult result)
{
    Socket sck = result.AsyncState as Socket;
    Socket client = sck.EndAccept(result);
    sck.BeginAccept(Accepted, sck);
}

        Socket accepted = sck.Accept();

只需在单独的线程中执行侦听,如下所示 -

    private void startServer()
    {
        sck = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
        sck.Bind(new IPEndPoint(0, 8080));
        new Thread(() => StartListening(sck)).Start();
    }
    void StartListening(Socket socket)
    {
        socket.Listen(100);
        Accept(socket);
    }
    void Accept(Socket socket)
    {
        while (true)
        {
            Socket accepted = socket.Accept();
            Buffer = new byte[accepted.SendBufferSize];
            int bytesRead = accepted.Receive(Buffer);
            byte[] formatted = new byte[bytesRead];
            for (int i = 0; i < bytesRead; i++)
            {
                formatted[i] = Buffer[i];
            }
            string command = Encoding.ASCII.GetString(formatted);
            string[] splittedCommand = command.Split(' ');
            jobsHistory.Items.Add(Encoding.ASCII.GetString(formatted));
            jobsHistory.Refresh();
            Process processToRun = new Process();
            processToRun.StartInfo.FileName = splittedCommand[0];
            processToRun.StartInfo.WorkingDirectory = Path.GetDirectoryName(splittedCommand[0]);
            processToRun.StartInfo.Arguments = "";
            for (int i = 1; i < splittedCommand.Length; i++)
            {
                processToRun.StartInfo.Arguments += " " + splittedCommand[i];
            }
            processToRun.Start();
            accepted.Close();
        }
        // If you want to start listening again
        socket.Close();
        startServer();
    }