Question

我正在研究客户端 - 服务器多线程应用程序：

沟通的进展是：

服务器侦听套接字
客户端连接并向服务器发送请求
每个请求以0x04
服务器必须使用比传入请求慢的操作来执行每个请求

我在“ProcessClient”方法中遇到问题，当两个请求在短时间内发生，并且第一个请求无法处理直到方法结束，因为第二个请求即将进行处理。 foreach循环后出现问题：

            foreach (var t in invoices)
            {
                SaveToDataBase(t);
            }

方法直到最后才执行，并且它不会向客户端发送响应，并带有以下代码片段：

            var ResponseFile = ResponseClientFolder + "\\" + ResponseClientFileName + x + ".txt";
            StreamWriter sw = File.CreateText(ResponseFile);
            sw.WriteLine(_odgovor);
            sw.Close();
            _odgovor = string.Empty;
            SendToClient(ResponseFile);

因为“ProcessClient”方法发生了第二次请求。

有没有办法解决这个问题。我一直在寻找很多没有成功的解决方案。

整个代码如下：

    private void RunListener()
    {
        try
        {
            _listener = new TcpListener(IPAddress.Parse(ServerAddres), ServerPort);
            _listener.Start();
            while (true)
            {
                TcpClient client = _listener.AcceptTcpClient();
                Invoke(new Action(() => { }));
                ThreadPool.QueueUserWorkItem(ProcessClient, client);
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message, @"Run listener");
        }
    }


    private void ProcessClient(object state)
    {
        try
        {
            byte[] bytes = new byte[1024];
            TcpClient client = state as TcpClient;
            StringBuilder completeMessage = new StringBuilder();

            if (client == null) return;

            networkStream = client.GetStream();
            int bytesRead = 0;
            do
            {
                bytesRead = networkStream.Read(bytes, 0, bytes.Length);
                completeMessage.AppendFormat("{0}", Encoding.Default.GetString(bytes, 0, bytesRead));
            } while (bytesRead > 0 && bytes[bytesRead - 1] != 0x04);

            completeMessage = completeMessage.Replace(@"”", "");

            string datetime = DateTime.Now.ToString();
            var x = datetime.Replace(".", string.Empty).Replace(":", string.Empty).Replace(" ", string.Empty);
            var inputfilename = "Racun" + x + ".txt";

            StreamWriter sws = File.CreateText(inputfilename);
            sws.WriteLine(completeMessage);
            sws.Close(); 
            string data = completeMessage.ToString();
            char[] delimiters = { '\r', '\n' };
            string[] invoices = data.Split(delimiters, StringSplitOptions.RemoveEmptyEntries);

            foreach (var t in invoices)
            {
                SaveToDataBase(t);
            }

            var ResponseFile = ResponseClientFolder + "\\" + ResponseClientFileName + x + ".txt";
            StreamWriter sw = File.CreateText(ResponseFile);
            sw.WriteLine(_odgovor);
            sw.Close();
            _odgovor = string.Empty;
            SendToClient(ResponseFile);
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message, @"Proces client");
        }
    }

    private void SendToClient(string ResponseFile)
    {
        try
        {
            byte[] byteData = File.ReadAllBytes(ResponseFile);
            List<byte> byteDat = new List<byte>();
            byteDat.AddRange(byteData);
            byteDat.Add(0x04);

            byteData = byteDat.ToArray();
            networkStream.Write(byteData, 0, byteData.Length);
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message, @"Send to client");
        }
    }

强制执行代码直到方法结束

0 个答案: