显示HTTP状态码和HEAD信息↓
HTTP/1.1 521
Date: Mon, 24 Jun 2024 03:04:23 GMT
Content-Type: text/plain; charset=UTF-8
Content-Length: 15
Connection: keep-alive
Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=%2B4Ke3ka0Y16xUyd1eGhxZpkQJ2nmehTNADA5J8Kmx82Xh2pqRQVprHXYVLpsUDreQRv0MoyM5j7MkuTYFtfYEsrsVrRf%2Bc39%2FYtzunK58m19BdITX8IeWDMFjWvwcFSmWN8rzQ74"}],"group":"cf-nel","max_age":604800}
NEL: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
X-Frame-Options: SAMEORIGIN
Referrer-Policy: same-origin
Cache-Control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Expires: Thu, 01 Jan 1970 00:00:01 GMT
Server: cloudflare
CF-RAY: 89897d7c2f4b957d-LHR