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我正在尝试将来自特定端口的所有请求（所有请求都来自 Web 浏览器）重定向到请求的主机名作为代码

1 - 从请求中读取所有接收数据

            while (recvRequest)
            {
                this.clientSocket.Receive(requestBuffer);
                string fromByte = ASCIIEncoding.ASCII.GetString(requestBuffer);
                requestPayload += fromByte;

                if (requestPayload.EndsWith(EOL + EOL))
                {
                    recvRequest = false;
                }
            }

2-解析查询（获取主机和端口以及请求类型）

            HeaderFields = ParseQuery(requestPayload);
            if (HeaderFields == null || !HeaderFields.ContainsKey("Host"))
            {
                return;
            }
            int Port;
            string Host;
            int Ret;

3 - 如果类型等于 CONNECT

            if (HttpRequestType.ToUpper().Equals("CONNECT"))
            { //HTTPS
                Ret = RequestedPath.IndexOf(":");
                if (Ret >= 0)
                {
                    Host = RequestedPath.Substring(0, Ret);
                    if (RequestedPath.Length > Ret + 1)
                        Port = int.Parse(RequestedPath.Substring(Ret + 1));
                    else
                        Port = 443;
                }
                else
                {
                    Host = RequestedPath;
                    Port = 443;
                }


            }

4 - 如果输入等于 post 或 get

            else
            { //Normal HTTP
                Ret = ((string)HeaderFields["Host"]).IndexOf(":");
                if (Ret > 0)
                {
                    Host = ((string)HeaderFields["Host"]).Substring(0, Ret);
                    Port = int.Parse(((string)HeaderFields["Host"]).Substring(Ret + 1));
                }
                else
                {
                    Host = (string)HeaderFields["Host"];
                    Port = 80;
                }
                if (HttpRequestType.ToUpper().Equals("POST"))
                {
                    int index = requestPayload.IndexOf("\r\n\r\n");
                    m_HttpPost = requestPayload.Substring(index + 4);
                }
            }



            requestPayload = "";
            foreach (string line in requestLines)
            {

                requestPayload += line;
                requestPayload += EOL;
            }

5 - 连接到主机

            Socket destServerSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            destServerSocket.Connect(Host, Port);
            //State 2: Sending New Request Information to Destination Server and Relay Response to Client
            destServerSocket.Send(ASCIIEncoding.ASCII.GetBytes(requestPayload));
            //Console.WriteLine("Begin Receiving Response...");

6 - 向客户端发送接收响应

而（destServerSocket.Receive（responseBuffer）！= 0）{

                Console.Write(ASCIIEncoding.ASCII.GetString(responseBuffer));
                this.clientSocket.Send(responseBuffer);
            }

            destServerSocket.Disconnect(false);
            destServerSocket.Dispose();
            this.clientSocket.Disconnect(false);
            this.clientSocket.Dispose();

但是当我打开电子邮件时无法正常工作

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