- cdn信息跟踪(colo,loc等)
https://speed.cloudflare.com/cdn-cgi/trace
fl=455f5
h=speed.cloudflare.com
ip=2::00
ts=1658027673.481
visit_scheme=https
uag=Mozilla/5.0
colo=HKG <====
http=http/2
loc=CN <====
tls=TLSv1.3
sni=plaintext
warp=off
gateway=off
- cloudflare数据中心代码
CF-RAY中的代码查询: https://www.cloudflarestatus.com/
- cloudflare连通性检查(204)
https://cp.cloudflare.com/generate_204
- 检测是否使用HTTP3连接
- 测速