保留源IP

通过配置CDN源站IP的HTTP响应头，将网关访问保留源IP。具体操作为在源站服务器上添加如下代码：，，“，Access-Control-Allow-Origin: *，Access-Control-Allow-Headers: X-Requested-With, Content-Type, Accept，Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS，“