curl https://track.moyu.ac.cn/ -v
* Host track.moyu.ac.cn:443 was resolved.
* IPv6: 2606:4700:3033::6815:6d8, 2606:4700:3031::ac43:874e
* IPv4: 104.21.6.216, 172.67.135.78
* Trying 104.21.6.216:443...
* Connected to track.moyu.ac.cn (104.21.6.216) port 443
* ALPN: curl offers h2,http/1.1
* (304) (OUT), TLS handshake, Client hello (1):
* CAfile: /etc/ssl/cert.pem
* CApath: none
* (304) (IN), TLS handshake, Server hello (2):
* (304) (IN), TLS handshake, Unknown (8):
* (304) (IN), TLS handshake, Certificate (11):
* (304) (IN), TLS handshake, CERT verify (15):
* (304) (IN), TLS handshake, Finished (20):
* (304) (OUT), TLS handshake, Finished (20):
* SSL connection using TLSv1.3 / AEAD-CHACHA20-POLY1305-SHA256 / [blank] / UNDEF
* ALPN: server accepted h2
* Server certificate:
* subject: CN=moyu.ac.cn
* start date: Dec 5 01:41:13 2025 GMT
* expire date: Mar 5 02:38:55 2026 GMT
* subjectAltName: host "track.moyu.ac.cn" matched cert's "*.moyu.ac.cn"
* issuer: C=US; O=Google Trust Services; CN=WE1
* SSL certificate verify ok.
* using HTTP/2
* [HTTP/2] [1] OPENED stream for https://track.moyu.ac.cn/
* [HTTP/2] [1] [:method: GET]
* [HTTP/2] [1] [:scheme: https]
* [HTTP/2] [1] [:authority: track.moyu.ac.cn]
* [HTTP/2] [1] [:path: /]
* [HTTP/2] [1] [user-agent: curl/8.7.1]
* [HTTP/2] [1] [accept: */*]
> GET / HTTP/2
> Host: track.moyu.ac.cn
> User-Agent: curl/8.7.1
> Accept: */*
>
* Request completely sent off
< HTTP/2 525
< date: Thu, 29 Jan 2026 05:27:15 GMT
< content-length: 0
< server: cloudflare
< cache-control: private, no-store
< cf-cache-status: DYNAMIC
< nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
< set-cookie: cf_use_ob=443; Expires=Thu, 29 Jan 2026 05:27:45 GMT
< set-cookie: cf_ob_info=525:9c5651c36c094d45:YVR; Expires=Thu, 29 Jan 2026 05:27:45 GMT
< report-to: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=Z36KhXaU19Rin%2BbLtesN9IsX0xLdoJg6RSqmOdaLo%2Fyu%2BO079iOVfzBlSQHpQ%2BiwzKHy5gqmGO54bgLEr%2BJ06VIdyIsYV%2FBgPdkFltmk"}]}
< cf-ray: 9c5651c36c094d45-YVR
< alt-svc: h3=":443"; ma=86400
<
* Connection #0 to host track.moyu.ac.cn left intact