public bool login(string un, string pw)
        {
            var prx = auth_prx_.login_backend(un, pw);

            if (prx != null)
            {
                svc_prx_ = BackendServicePrxHelper.uncheckedCast(prx.ice_endpoints(auth_prx_.ice_getEndpoints()));
                if (svc_prx_ != null)
                {
                    return(true);
                }
            }
            return(false);
        }
 public static BackendServicePrx read(Ice.InputStream inS__)
 {
     Ice.ObjectPrx proxy = inS__.readProxy();
     if(proxy != null)
     {
         BackendServicePrxHelper result = new BackendServicePrxHelper();
         result.copyFrom__(proxy);
         return result;
     }
     return null;
 }
 public static BackendServicePrx read__(IceInternal.BasicStream is__)
 {
     Ice.ObjectPrx proxy = is__.readProxy();
     if(proxy != null)
     {
         BackendServicePrxHelper result = new BackendServicePrxHelper();
         result.copyFrom__(proxy);
         return result;
     }
     return null;
 }
 public static BackendServicePrx uncheckedCast(Ice.ObjectPrx b, string f)
 {
     if(b == null)
     {
         return null;
     }
     Ice.ObjectPrx bb = b.ice_facet(f);
     BackendServicePrxHelper h = new BackendServicePrxHelper();
     h.copyFrom__(bb);
     return h;
 }
 public static BackendServicePrx uncheckedCast(Ice.ObjectPrx b)
 {
     if(b == null)
     {
         return null;
     }
     BackendServicePrx r = b as BackendServicePrx;
     if(r == null)
     {
         BackendServicePrxHelper h = new BackendServicePrxHelper();
         h.copyFrom__(b);
         r = h;
     }
     return r;
 }
 public static BackendServicePrx checkedCast(Ice.ObjectPrx b, string f, _System.Collections.Generic.Dictionary<string, string> ctx)
 {
     if(b == null)
     {
         return null;
     }
     Ice.ObjectPrx bb = b.ice_facet(f);
     try
     {
         if(bb.ice_isA(ice_staticId(), ctx))
         {
             BackendServicePrxHelper h = new BackendServicePrxHelper();
             h.copyFrom__(bb);
             return h;
         }
     }
     catch(Ice.FacetNotExistException)
     {
     }
     return null;
 }
 public static BackendServicePrx checkedCast(Ice.ObjectPrx b, string f)
 {
     if(b == null)
     {
         return null;
     }
     Ice.ObjectPrx bb = b.ice_facet(f);
     try
     {
         if(bb.ice_isA(ice_staticId()))
         {
             BackendServicePrxHelper h = new BackendServicePrxHelper();
             h.copyFrom__(bb);
             return h;
         }
     }
     catch(Ice.FacetNotExistException)
     {
     }
     return null;
 }
 public static BackendServicePrx checkedCast(Ice.ObjectPrx b, _System.Collections.Generic.Dictionary<string, string> ctx)
 {
     if(b == null)
     {
         return null;
     }
     BackendServicePrx r = b as BackendServicePrx;
     if((r == null) && b.ice_isA(ice_staticId(), ctx))
     {
         BackendServicePrxHelper h = new BackendServicePrxHelper();
         h.copyFrom__(b);
         r = h;
     }
     return r;
 }