> Cloudflare is using the 'alt-svc' header [...] The CIA is not, I'd have loved it. It should be noted that alt-svc is an HTTP header returned which means you

> Cloudflare is using the 'alt-svc' header [...] The CIA is not, I'd have loved it. It should be noted that alt-svc is an HTTP header returned which means you have first made an HTTP request before the onion request which affects anonymity. It's not a big deal over Tor because that HTTP call is on an exit node, but still should be noted.