WCF基于IP访问授权的设置

protected override void OnStartProcessingRequest(ProcessRequestArgs args)
        {
            string ipAddress = HttpContext.Current.Request.UserHostAddress;
            ManagerEntities entity = new ManagerEntities();
            var result = (from p in entity.ClientIPLists
                          where (p.IP == ipAddress && p.Allow) || (p.IP == "255.255.255.255" && p.Allow)
                          select p).Count();
            if (result == 0)
                throw new System.Exception(string.Format("当前IP{0}未经授权！"));
            base.OnStartProcessingRequest(args);
        }