private List <DeviceDTO> getOnlineWSDev()
        {
            List <DeviceDTO> devices = new List <DeviceDTO>();

            var server = bootstrap.GetServerByName(WS_SERVER);

            if (server == null)
            {
                return(devices);
            }
            WSServer casicServer = server as WSServer;

            //    CasicSession session = casicServer.GetAllSessions() as CasicSession;
            foreach (WSSession session in casicServer.GetAllSessions())
            {
                String sessionId = session.SessionID;
                if (session.MacID != null)
                {
                    DeviceDTO devDto = new DeviceDTO();
                    devDto.SessionId  = sessionId;
                    devDto.Company    = "203所";
                    devDto.TypeName   = "有害气体监测仪";
                    devDto.Name       = session.MacID;
                    devDto.Tag        = "";
                    devDto.Status     = "在线";
                    devDto.ServerName = "WSServer";
                    devices.Add(devDto);
                }
            }


            return(devices);
        }