HTTP/1.1 200 OK Server: nginx Date: Wed, 19 Aug 2020 04:39:33 GMT Content-Type: text/html Content-Length: 0 Connection: keep-alive Last-Modified: Sat, 09 May 2020 03:40:09 GMT ETag: "0-5a52eded2f840" Accept-Ranges: bytes Vary: User-Agent Cache-Control: private, max-age=600 Expires: Wed, 19 Aug 2020 04:49:33 GMT X-Frame-Options: SAMEORIGIN, ALLOW-FROM http://zczx.hnu.edu.cn X-Content-Type-Options: nosniff X-XSS-Protection: 1; mode=block Content-Language: zh-CN