测试，原因未知，观察简单对比仅发现cf多了个tls1.3
@wxhere15
非cloudflare CDN的支持
https://seeders-paradise.org/announce
报告：https://www.ssllabs.com/ssltest/analyze.html?d=seeders-paradise.org
https://sslanalyzer.comodoca.com/?url=seeders-paradise.org
cloudflare的不支持，直接返回错误结果
https://opentracker.xyz/announce
https://t.quic.ws/announce
https://tracker.fastdownload.xyz/announce
报告：https://www.ssllabs.com/ssltest/analyze.html?d=opentracker.xyz&s=172.64.165.21&latest
https://www.ssllabs.com/ssltest/analyze.html?d=t.quic.ws&s=104.24.103.248&latest
https://www.ssllabs.com/ssltest/analyze.html?d=tracker.fastdownload.xyz&s=172.64.199.32&latest
https://sslanalyzer.comodoca.com/?url=opentracker.xyz
https://sslanalyzer.comodoca.com/?url=t.quic.ws
https://sslanalyzer.comodoca.com/?url=tracker.fastdownload.xyz