upi

如果你有用WS+CF CDN, 咁個fallback其實係多餘, 因為你可以係CF CDN度set page rules嘅forwarding url 去分流, 又或用firewall rule直block堆GFW 白撞IP

page rules:
1 /v2ray = https on (隨便set個 non-url forwarding rule去exclude你ws path i.e. /v2ray)
2 *domain.com/* = forwarding url to https://www.example.com (所有traffic指去反偵/真website)

除咗 domain.com/v2ray嘅vless tcp tls traffic會去返v2ray server 走WS外, 其他所有traffic指晒去個反偵/真website度, 隨便你用乜都得, 最好係海外ip, 咁就唔使自己專登整個擺明係假嘅反偵web咁on9

又或再賤D係CF CDN firewall rule玩吓堆GFW 白撞 ip
先加 url path /v2ray = allow (放行v2ray嘅traffic)
再加 cn = challenge/block (白撞後再指去反偵website度)

仲有GFW會用大量IP去白撞cdn嘅domain, 咁CF就可能會解發rate limit 去block/blacklist咗某段CN IP, 所以有時係牆內會連唔到CDN domain, 咁你就要加條firewall rule to bypass CF嘅security level:
cn + url path (/v2ray) =  bypass (呢條rule要排第一)