/// <summary>
        /// Get latest version of client.
        /// </summary>
        /// <param name="serverIP">server ip</param>
        /// <param name="serverPort">server port</param>
        public static int GetLatestVersion(string serverIP, int serverPort)
        {
            IUpgradeService upgradeService = (IUpgradeService)Activator.GetObject(typeof(IUpgradeService),
                                                                                  string.Format("tcp://{0}:{1}/UpgradeCenter", serverIP, serverPort + 2));

            return(upgradeService.GetLatestVersion());
        }