Note: You must retrieve the IP Geolocation information from the CF-IPCountry HTTP header.
文章裡的 ...
我把 map $http_cf_ipcountry $allow { 改为 cf_ipcountry 一样屏蔽不了哇。。大神
This header holds the country code of the originating visitor, it is a two character value that will have the Country code, if the country code is unknown, it will be "XX".