Uri endpointURI = new Uri("opc.tcp://127.0.0.1:4862/ - [None:None:Binary]");
if (endpointURI != null)
                    {
                        // start the reverse connection manager
                        m_reverseConnectManager = new ReverseConnectManager();
                        m_reverseConnectManager.AddEndpoint(endpointURI);
                      
                        m_reverseConnectManager.StartService(config);
                    }           
              
                    Console.WriteLine("2 - Discover endpoints of {0}.", server.EndPointUrl);

                    EndpointDescription selectedEndpoint;
                    if (m_reverseConnectManager == null)
                    {
                        selectedEndpoint = CoreClientUtils.SelectEndpoint(server.EndPointUrl, true, 15000);
                    }
                    else
                    {
                        Console.WriteLine("   Waiting for reverse connection."+DateTime.Today);
                        ITransportWaitingConnection connection = await m_reverseConnectManager.WaitForConnection(
                            new Uri(server.EndPointUrl), null, new CancellationTokenSource(60000).Token);
                        if (connection == null)
                        {
                            throw new ServiceResultException(Opc.Ua.StatusCodes.BadTimeout, "Waiting for a reverse connection timed out.");
                        }
                        selectedEndpoint = CoreClientUtils.SelectEndpoint(config, connection, true, 15000);
                    }