Question

首先，如果项目有效，我的项目应该做什么：

用C ++编写的客户端连接到用C＃编码的服务器
当Connection成功时，客户端发送＆＃34; 0＆＃34;到服务器请求随机的十六进制字符串
如果客户收到了十六进制，他将发送＆＃34; 1＆＃34;到服务器
现在，客户端使用收到的十六进制字符串执行一些操作，然后将其发送回服务器
如果客户端对十六进制字符串的操作是正确的（基本的authing系统），则返回＆＃34; 1＆＃34;否则他会返回＆＃34; 0＆＃34;

注意：客户端/服务器端的接收/发送工作，我之前通过向服务器发送1来测试它，如果收到的字符串是1，则服务器返回0

现在我的编码：这是用C＃编写的服务器部分：

private static Socket serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
private static List<Socket> clientSockets = new List<Socket>();
private const int PORT = 11111;
private static byte[] buffer = new byte[100];

private void ReceiveCallback(IAsyncResult AR)
{
    Socket current = (Socket)AR.AsyncState;
    int received;

    try
    {
        received = current.EndReceive(AR);
    }
    catch (SocketException)
    {
        Console.WriteLine("Client Disconnected! (Forced)");
        current.Close();
        clientSockets.Remove(current);
        return;
    }
    //That's how my Example before worked:
    /*byte[] recBuf = new byte[1];
    Array.Copy(buffer, recBuf, received);
    string text = Encoding.ASCII.GetString(recBuf);
    if(text != "" && text.StartsWith("0"))
    {
        Console.WriteLine("Recieved: " + text);
        string send = "1";
        Console.WriteLine("Sending: " + send);
        Byte[] data = ASCIIEncoding.ASCII.GetBytes(send);
        current.Send(data);
        Console.WriteLine("Sended!");
        current.Shutdown(SocketShutdown.Both);
        current.Close();
        clientSockets.Remove(current);
        Console.WriteLine("Client Disconnected!");
        return;
    }
    current.BeginReceive(buffer, 0, 1, SocketFlags.None, ReceiveCallback, current);*/
    //worked like a charm!
    //That's my new Solution, that doesn't work:
    byte[] recBuf = new byte[100];
    Array.Copy(buffer, recBuf, received);
    string text = Encoding.ASCII.GetString(recBuf);
    while (text != "")
    {
        Console.WriteLine("Received Data: " + text);
        if (text.StartsWith("0") && text.Length < 32)
        {
            Console.WriteLine("Client requests Random HexString...");
            string rand = GetRandomHexNumber(32);
            Byte[] data = ASCIIEncoding.ASCII.GetBytes(rand);
            current.Send(data);
            Console.WriteLine("Sended HexString! - " + rand);
        }
        if (text.StartsWith("1") && text.Length < 32)
        {
            Console.WriteLine("Client recieved the HexString!");
        }
        if (text.Length > 32 && !text.StartsWith("0") && !text.StartsWith("1"))
        {
            Console.WriteLine("Result recieved!");
            //here will be some authing process but for simplicity just return "1"
            byte[] data = ASCIIEncoding.ASCII.GetBytes("1");
            current.Send(data);
            current.Shutdown(SocketShutdown.Both);
            current.Close();
            clientSockets.Remove(current);
            Console.WriteLine("Client Disconnected!");
            return;
        }
        if (current.Connected)
            current.BeginReceive(buffer, 0, 100, SocketFlags.None, ReceiveCallback, current);
    }
    if (current.Connected)
        current.BeginReceive(buffer, 0, 100, SocketFlags.None, ReceiveCallback, current);
}

private void AcceptCallback(IAsyncResult AR)
{
    Socket socket;

    try
    {
        socket = serverSocket.EndAccept(AR);
    }
    catch (ObjectDisposedException)
    {
        return;
    }

    clientSockets.Add(socket);
    socket.BeginReceive(buffer, 0, 100, SocketFlags.None, ReceiveCallback, socket);
    Console.WriteLine("Client Connected!");
    serverSocket.BeginAccept(AcceptCallback, null);
}

private void setupServer()
{
    serverSocket.Bind(new IPEndPoint(IPAddress.Any, PORT));
    serverSocket.Listen(0);
    Console.WriteLine("Server Started!");
    Console.WriteLine("Listening for Clients...");
    serverSocket.BeginAccept(AcceptCallback, null);
}

private void CloseAllSockets()
{
    foreach (Socket socket in clientSockets)
    {
        socket.Shutdown(SocketShutdown.Both);
        socket.Close();
    }

    serverSocket.Close();
}

setupServer（）;在控制台启动时启动！ C＃部分是c ++方面唯一有问题的一切都很好！我真的希望有人能够现在帮助我，因为我还没有在这个论坛上获得任何帮助，我真的需要这个工作，我相信这里有很多程序员可以帮助我（也许它只是一个逻辑问题，所以每个答案或评论都表示赞赏）谢谢你的时间:)）

服务器/客户端套接字连接问题

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