func (app *router) sessionDelIntercept(ctx *bear.Context) {
	sessionID := ctx.Get(forest.SessionID).(string)
	if sessionID == sessionIDWithSelfDestruct {
		ctx.Set(forest.SessionID, nil)
	}
	if sessionID == sessionIDWithUserDestruct {
		ctx.Set(forest.SessionUserID, nil)
	}
	ctx.Next()
}
func (app *router) sessionVerify(ctx *bear.Context) {
	_, ok := ctx.Get(forest.SessionID).(string)
	if !ok {
		ctx.Set(forest.Error, errors.New("sessionVerify failed"))
		app.Ware("ServerError")(ctx)
		return
	} else {
		ctx.Next()
	}
}
func (app *router) authenticate(ctx *bear.Context) {
	ctx.Set(forest.SessionID, sessionIDExistent)
	ctx.Set(forest.SessionUserID, sessionUserID)
	ctx.Next()
}