System.Net.Security.SslStream.EndAuthenticateAsServer C# (CSharp) Method

        public virtual void EndAuthenticateAsServer(IAsyncResult asyncResult)
        {
            _sslState.EndProcessAuthentication(asyncResult);
        }

            public connectionHandler(Socket socket, HttpServer server, bool secure)
            {
                Socket = socket;

                _requestId = Rnd.Next();
                _requestStart = DateTime.UtcNow;
                _server = server;
                _secure = secure;

                _server.Log.Info(4, "{0:X8} Incoming connection from {1}".Fmt(_requestId, socket.RemoteEndPoint));

                _buffer = new byte[1024];
                _bufferDataOffset = 0;
                _bufferDataLength = 0;

                _headersSoFar = "";

                lock (server._activeConnectionHandlers)
                    server._activeConnectionHandlers.Add(this);

                var stream = new NetworkStream(socket, ownsSocket: true);
                if (_secure)
                {
                    var secureStream = new SslStream(stream);
                    _stream = secureStream;
                    secureStream.BeginAuthenticateAsServer(new X509Certificate2(server.Options.CertificatePath, server.Options.CertificatePassword), false, SslProtocols.Tls | SslProtocols.Tls11 | SslProtocols.Tls12, true, ar =>
                    {
                        try
                        {
                            secureStream.EndAuthenticateAsServer(ar);
                        }
                        catch (Exception e)
                        {
                            Socket.Close();
                            cleanupIfDone();
                            if (_server.ResponseExceptionHandler != null)
                                _server.ResponseExceptionHandler(null, e, null);
                            return;
                        }
                        receiveMoreHeaderData();
                    }, null);
                }
                else
                {
                    _stream = stream;
                    receiveMoreHeaderData();
                }
            }