0

我正在尝试为 .nl 注册商 SIDN 的项目制作 EPP XML 客户端。该项目是在 Windows 窗体中创建的。一旦我点击一个按钮，客户端必须先连接到服务器，然后发送问候语，然后登录。我尝试了很多，但似乎没有任何效果。我也在这个线程上尝试了接受的答案，但没有给出示例，所以我不确定如何

连接。阅读响应（您收到问候语）发送登录命令。读取响应（您得到登录响应）发送命令。阅读响应。发送断开连接。阅读响应。

需要实施。

连接后我从服务器收到了一个问候，但是一旦我发送了一个问候，ReadMessage 方法上的代码就会冻结。我究竟做错了什么？

这是我的代码：

private void button3_Click(object sender, EventArgs e)
    {
        //Connect with registry and read server greet
        if (Connect(new Uri("https://drs.domain-registry.nl:700")))
        {
            //Send greeting back to the server and read server response
            if (Command(Greeting()))
            {
                //Send login command to the server and read server response
                if (Command(Login()))
                {
                    Console.WriteLine("Successfully logged in...");
                }
            }
        }

    }

private static XDocument Greeting()
    {
        var ns = XNamespace.Get("urn:ietf:params:xml:ns:epp-1.0");
        var doc = new XDocument(new XDeclaration("1.0", "utf-8", "no"));
        var root = new XElement(ns + "epp", new XElement(ns + "hello"));
        doc.Add(root);

        return doc;
    }

private string ReadMessage()
    {
        // The first four bytes will be the the content length as a network order (big-endian) 32-bit number.
        var lengthBytes = new byte[4];
        _sslStream.Read(lengthBytes, 0, 4);
        Array.Reverse(lengthBytes);

        var length = BitConverter.ToInt32(lengthBytes, 0) - 4;

        // Create a byte array of the correct size for the response.
        var messageBytes = new byte[length];

        var returned = 0;

        while (returned != length)
        {
            returned += _sslStream.Read(messageBytes, 0, length);
        }

        return Encoding.UTF8.GetString(messageBytes);
    }

public bool Command(XContainer requestData)
    {
        //Encode to byte[]
        byte[] bytedata = Encoding.UTF8.GetBytes(requestData.ToString());
        //Get the request stream
        _sslStream.Write(bytedata, 0, bytedata.Length);
        //Flush after writing
        _sslStream.Flush();
        //Read server response from our _sslStream
        var response = ReadMessage();

        //Not sure when to return true
        if (response.Length > 0)
        {
            Console.WriteLine($"Server response: {response}");
            return true;
        }
        return false;
    }

public bool Connect(Uri _endpoint)
    {
        //Create a TcpClient with our uri
        _tcpClient = new TcpClient(_endpoint.Host, _endpoint.Port);
        //Create a SslStream
        _sslStream = new SslStream(_tcpClient.GetStream(), false, ValidateServerCertificate);
        //SIDN requires ssl
        _sslStream.AuthenticateAsClient(_endpoint.Host, null, System.Security.Authentication.SslProtocols.Tls12, true);
        //Read server greet from our _sslStream
        var greet = ReadMessage();
        //If we are successfully connected and got a server greet
        if (_sslStream.IsAuthenticated && _tcpClient.Connected && greet.Length != 0)
        {
            Console.WriteLine($"Server greet: {greet}");
            return true;
        }
        return false;
    }

编辑：我也在使用 tls，因为我看到这个问题使用了与我相同的注册商，但也没有解决它。

4

0 回答 0