C# 如何使用C语言中的Client&Server指定变量中应存储哪些数据？

所以，我正在开发一款使用服务器的游戏。我试图添加用户名和密码系统，但遇到问题。当我将数据从客户端发送到服务器时，服务器会接收到数据，但我想不出一个系统来指定数据是什么以及应该存储在哪里

例如，假设我将用户名从客户端发送到服务器。服务器收到它，但我如何让它知道它是用户名，而不是密码

如果有人能帮忙，谢谢

注意：如果有帮助，我正在VisualStudio中使用C

服务器代码

客户端代码

---

正如rob所说，在发送数据之前，您可能希望使用数据交换格式格式化数据。我更喜欢使用Newtonsoft.JSON库提供的JSON。你需要有一个参考资料

客户端代码

服务器代码

---

完全取决于您发送数据的方式。你可能想研究数据格式，如XML、JSON等。我想发送代码可能会有所帮助，leme将其添加到帖子中。随时都行！很乐意帮忙

int recv; // Holds how much data we are reading
            byte[] data = new byte[1024]; // Byte Array of data, used for everything recived and sent to the server

            IPEndPoint endpoint = new IPEndPoint(IPAddress.Any, 904); // Listener for connections

            Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); // Stores connection from client
            socket.Bind(endpoint); // Bind incoming connection to socket

            Console.WriteLine(" >> Waiting for client...");

            IPEndPoint sender = new IPEndPoint(IPAddress.Any, 904); // Wait for connection, once recived, sets sender to connected IP
            EndPoint tmpRemote = (EndPoint)sender; // Stores client temp

            recv = socket.ReceiveFrom(data, ref tmpRemote); // Stores all client info, get data it's sending (And how much data is in it)

            Console.WriteLine(" >> Data received from {0}", tmpRemote.ToString());
            Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv)); // Convert data into string and display it

            string welcome = " >> Welcome to AlphaNET!"; // Welcome Message
            data = Encoding.ASCII.GetBytes(welcome); // Convert Welcome to sendable bytes

            if (socket.Connected) //Checking if socket is still connected, if so, send welcome message
            {
                socket.Send(data); // Send welcome message
            }

            while (true) // Our loop to check for data, goes on forever
            {
                if (!socket.Connected) // Checks to see if client is not connected, if true, write to console and break the loop
                {
                    Console.WriteLine(" >> Data Sent");
                }

                data = new byte[1024]; // Resets data var
                recv = socket.ReceiveFrom(data, ref tmpRemote);

                if (recv == 0) // If no info is recived, break loop
                {
                    break;
                }

                Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));
            }
            Console.ReadLine();
            socket.Close();

public void sendUsr()
    {
        String username = usrBox.Text;
        byte[] packetData =            System.Text.ASCIIEncoding.ASCII.GetBytes(username); 
        IPEndPoint ep = new IPEndPoint(IPAddress.Parse(IP), port);
        Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); // Makes socket to send data
        socket.SendTo(packetData, ep); // Sends data to server
    }

String dataToSend = JsonConvert.SerializeObject(new { username = usrBox.Text, password = pwdBox.Text });

recv = socket.ReceiveFrom(data, ref tmpRemote); // Stores all client info, get data it's sending (And how much data is in it)   
dynamic receivedData = JsonConvert.DeserializeObject(Encoding.ASCII.GetString(data, 0, recv));
String username = (string)receivedData.username;
String password = (string)receivedData.password;