Question

我试图在c＃中创建HTTPS代理服务器。有人在这里发布了一个解决方案：

        string host = "encrypted.google.com";
        string proxy = "127.0.0.1";//host;
        int proxyPort = 8888;//443;

        byte[] buffer = new byte[2048];
        int bytes;

        // Connect socket
        TcpClient client = new TcpClient(proxy, proxyPort);
        NetworkStream stream = client.GetStream();

        // Establish Tcp tunnel
        byte[] tunnelRequest = Encoding.UTF8.GetBytes(String.Format("CONNECT {0}:443  HTTP/1.1\r\nHost: {0}\r\n\r\n", host));
        stream.Write(tunnelRequest , 0, tunnelRequest.Length);
        stream.Flush();

        // Read response to CONNECT request
        // There should be loop that reads multiple packets
        bytes = stream.Read(buffer, 0, buffer.Length);
        Console.Write(Encoding.UTF8.GetString(buffer, 0, bytes));

        // Wrap in SSL stream
        SslStream sslStream = new SslStream(stream);
        sslStream.AuthenticateAsClient(host);

        // Send request
        byte[] request = Encoding.UTF8.GetBytes(String.Format("GET https://{0}/  HTTP/1.1\r\nHost: {0}\r\n\r\n", host));
        sslStream.Write(request, 0, request.Length);
        sslStream.Flush();

        // Read response
        do
        {
            bytes = sslStream.Read(buffer, 0, buffer.Length);
            Console.Write(Encoding.UTF8.GetString(buffer, 0, bytes));
        } while (bytes != 0);

        client.Close();
        Console.ReadKey();

但是，这不是服务器的代码。它打印响应（作为纯文本），但客户端套接字（浏览器）没有得到响应。

感谢您的帮助，感谢。

Answer 1

我不是C＃专家，但不会用对原始CONNECT请求来自的TCP连接的写操作替换Console.Write来解决此问题？

看起来好像缺少一些代码，就像在发生所有这些事情之前，您必须通过TCP连接监听客户端。因此，例如，您正在侦听IP地址192.168.1.1端口8080。然后客户端发送类似

的内容

HTTP / 1.1 www.example.com:443

然后您去做所有这些事情，然后要执行（192.168.1.1:8080）.write（）或等同于C＃的工作，而不是Console.write。

c＃ - HTTPS代理

1 个答案: