Client Server tcp app不稳定

Question

我想创建这样的应用程序：

1. 用户在客户端中选择日期。
2. 当他点击发送按钮时，客户端通过TCP将日期发送到服务器。
3. 当服务器收到日期时，他会处理它们并返回到客户端csv 在字符串中。
4. 当客户收到他将数据写入文件时。

继承我的代码： - 服务器部分：

private void StartListen()
{
    server.Start(); // Starts Listening to Any IPAddress trying to connect to the program with port 1980
    new Thread(() => // Creates a New Thread (like a timer)
    {
        client = server.AcceptTcpClient(); //Waits for the Client To Connect
        zapisiLog("klient se spojio");
        if(client.Connected) // If you are connected
        {
            ServerReceive(); //Start Receiving
        }
    }).Start();
}
public void ServerReceive()
{
    stream = client.GetStream(); //Gets The Stream of The Connection
    new Thread(() => // Thread (like Timer)
    {
        while((i = stream.Read(datalength, 0, 4)) != 0)//Keeps Trying to Receive the Size of the Message or Data
        {
            byte[] data = new byte[BitConverter.ToInt32(datalength, 0)]; // Creates a Byte for the data to be Received On
            stream.Read(data, 0, data.Length); //Receives The Real Data not the Size
            this.Invoke((MethodInvoker) delegate // To Write the Received data
            {
                String s = Encoding.Default.GetString(data); // Encoding.Default.GetString(data); Converts Bytes Received to String
                string[] datumi = s.Split('_');
                sd1 = datumi[0];
                sd2 = datumi[1];
                mstat = datumi[2];
                DataSet dset = prikupi_podatke();

                if(datumi[2] != "" & dset != null)
                {
                    String zs = obradi(ref dset);
                    if(zs != "")
                    {
                        ServerSend(zs);
                    }
                    else
                    {
                        zapisiLog("Obrada podataka nije uspjela");
                    }
                }
                else
                {
                    zapisiLog("Prikupljanje podataka nije uspjelo");
                    System.IO.StreamWriter sw = new System.IO.StreamWriter(System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location) + "\\codexExcel.log");
                    try
                    {

                        sw.WriteLine(DateTime.Now.ToString() + ";Prikupljanje podataka nije uspjelo");
                        sw.Close();
                    }
                    catch(Exception)
                    {
                        sw.Close();
                    }
                }
            });
        }
    }).Start(); // Start the Thread
}

客户端部分：

public void spoji()
{
    try
    {
        client = new TcpClient(ip, 1980); //Trys to Connect
        ClientReceive(); //Starts Receiving When Connected
    }
    catch(Exception ex)
    {
        MessageBox.Show(ex.Message); // Error handler :D
    }
}
public void ClientSend(string msg)
{
    stream = client.GetStream(); //Gets The Stream of The Connection
    byte[] data; // creates a new byte without mentioning the size of it cuz its a byte used for sending
    data = Encoding.Default.GetBytes(msg); // put the msg in the byte ( it automaticly uses the size of the msg )
    int length = data.Length; // Gets the length of the byte data
    byte[] datalength = new byte[4]; // Creates a new byte with length of 4
    datalength = BitConverter.GetBytes(length); //put the length in a byte to send it
    stream.Write(datalength, 0, 4); // sends the data's length
    stream.Write(data, 0, data.Length); //Sends the real data
}
public void ClientReceive()
{
    string primljeno;
    stream = client.GetStream(); //Gets The Stream of The Connection
    new Thread(() => // Thread (like Timer)
    {
        while((i = stream.Read(datalength, 0, 4)) != 0)//Keeps Trying to Receive the Size of the Message or Data
        {
            // how to make a byte E.X byte[] examlpe = new byte[the size of the byte here] , i used BitConverter.ToInt32(datalength,0) cuz i received the length of the data in byte called datalength :D
            byte[] data = new byte[BitConverter.ToInt32(datalength, 0)]; // Creates a Byte for the data to be Received On
            stream.Read(data, 0, data.Length); //Receives The Real Data not the Size
            this.Invoke((MethodInvoker) delegate // To Write the Received data
            {
                primljeno = Encoding.UTF8.GetString(data); // Encoding.Default.GetString(data); Converts Bytes Received to String
                if(primljeno != "")
                {
                    //klijent pbrađuje
                    //obradi(ref primljeno);
                    //server obrađuje
                    obradi2(ref primljeno);
                }
                else
                {
                    MessageBox.Show("Komunikacija nije uspjela");
                }

            });
        }
    }).Start(); // Start the Thread
}

当服务器和主机在同一台计算机上时，应用程序运行良好。但在不同的机器上不稳定。 由于工作不正常，我的意思是应用程序崩溃，“服务器没有响应”。 我做错了什么？