proxy server over SSLStream and self signed certificate

I have troubles with the implementation of my proxy server over SSL with self signed Certificate:

HttpServer.cs:

static void Main(string[] args)         {              HttpsServer httpsServer = new HttpsServer(443, 1000, 1);             httpsServer.Start();          }  public HttpsServer(int port, int listeningInterval, int numOfThreads)         {             m_port = port;             m_httpClient = new HttpClient(443, 1000, "127.0.0.1");             ThreadPool.SetMaxThreads(numOfThreads, 0);             m_listeningInterval = listeningInterval;             m_stop = false;         }       public void Start()         {             new Thread(() =>             {                  TcpListener listener = new TcpListener(m_port);                 listener.Start();                 while (!m_stop)                 {                     if (listener.Pending())                     {                         ThreadPool.QueueUserWorkItem((Object o) =>                         {                              TcpClient client = listener.AcceptTcpClient();                             m.WaitOne();                             ProcessClient(client);                             m.ReleaseMutex();                          });                     }                     else                     {                         Thread.Sleep(m_listeningInterval);                     }                 }             }).Start();          }          static void ProcessClient(TcpClient client)         {             // A client has connected. Create the              // SslStream using the client's network stream.             SslStream sslStream = new SslStream(client.GetStream(), true);// here is the line               // Authenticate the server but don't require the client to authenticate.             try             {                 serverCertificate = new X509Certificate2("CARoot.pfx", "pass");                   sslStream.AuthenticateAsServer(serverCertificate, false, SslProtocols.Tls, true);                  // Set timeouts for the read and write to 5 seconds.                 sslStream.ReadTimeout = 5000;                 sslStream.WriteTimeout = 5000;                 // Read a message from the client.                    string messageData = ReadMessage(sslStream);                 // Write a message to the client.                 if (messageData != null && !messageData.Equals(""))                 {                     byte[] message = Encoding.UTF8.GetBytes(messageData);                     sslStream.Write(message);                 }             }             catch (AuthenticationException e)             {                 Console.WriteLine("Exception: {0}", e.Message);                 if (e.InnerException != null)                 {                     Console.WriteLine("Inner exception: {0}", e.InnerException.Message);                 }                 Console.WriteLine("Authentication failed - closing the connection.");                 sslStream.Close();                 client.Close();                 return;             }             finally             {                 // The client stream will be closed with the sslStream                 // because we specified this behavior when creating                 // the sslStream.                 sslStream.Close();                 client.Close();             }         }  static string ReadMessage(SslStream sslStream)         {             // Read the  message sent by the client.             // The client signals the end of the message using the             // "<EOF>" marker.             byte[] buffer = new byte[65536];              StringBuilder message = new StringBuilder();             int b = -1;             b = sslStream.Read(buffer, 0, buffer.Length);             Decoder d = Encoding.UTF8.GetDecoder();             char[] data = new char[d.GetCharCount(buffer, 0, b)];             d.GetChars(buffer, 0, b, data, 0);             message.Append(data);              string ans = message.ToString();              return ans;         } 

and the HttpClient.cs:

 public HttpClient(int port, int interval, string ip)         {             m_ip = ip;             m_port = port;             m_timeInterval = interval;             CommunicateWithServer();         }          private void CommunicateWithServer()         {             new Thread(() =>             {                 int port = m_port;                 String serverIP = m_ip;                 TcpClient client = new TcpClient(serverIP, port);                 SslStream sslStream = new SslStream(                     client.GetStream(),                     false,                     new RemoteCertificateValidationCallback(ValidateServerCertificate),                     null                     );                   //    sslStream.AuthenticateAsClient("localhost");                 //  sslStream.AuthenticateAsClient(serverName);                 while (true)                 {                      if (sslStream.CanRead)                     {                         string serverMsg = ReadMessage(sslStream);                         writeToWeb(serverMsg);                      }                     else                     {                         Thread.Sleep(m_timeInterval);                     }                 }              }).Start();           }          static string ReadMessage(SslStream sslStream)         {             // Read the  message sent by the server.             // The end of the message is signaled using the             // "<EOF>" marker.             byte[] buffer = new byte[65536];             StringBuilder messageData = new StringBuilder();             int bytes = -1;              bytes = sslStream.Read(buffer, 0, buffer.Length);              // Use Decoder class to convert from bytes to UTF8             // in case a character spans two buffers.             Decoder decoder = Encoding.UTF8.GetDecoder();             char[] chars = new char[decoder.GetCharCount(buffer, 0, bytes)];             decoder.GetChars(buffer, 0, bytes, chars, 0);             messageData.Append(chars);               return messageData.ToString();         } 

I have created the CARoot.pfx already and the program just stay at the sslStream.AuthenticateAsServer(serverCertificate, false, SslProtocols.Tls, true); line in the HttpServer.cs

where am I wrong? help please.

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