/// <summary>
        /// Kick user from the server
        /// </summary>
        /// <param name="sessionId"></param>
        /// <param name="reason"></param>
        /// <returns></returns>
        public void KickUser(int sessionId, string reason)
        {
            _server.kickUser(sessionId, reason);

            // remove from cache
            foreach (var u in _entity.OnlineUsers)
            {
                if (u.Value.Session == sessionId)
                {
                    _entity.OnlineUsers.Remove(u.Key);
                    break;
                }
            }
        }