Support alt-svc for .onion

[riastradh-brave]

No description provided.

[tildelowengrimm]

References:

• https://perfectoid.space
• https://trac.torproject.org/projects/tor/ticket/21952#comment:31

[fmarier]

This will need to be designed in a way such that it doesn't enable tracking: #4903

[bertrandfalguiere]

Tor Browser shipped with Onion Location, their implementation of Alt-svc : https://blog.torproject.org/new-release-tor-browser-95

Implementing Alt-svc in Brave would be useful for enhancing IPFS support too: ipfs/in-web-browsers#144

[da2x]

Brave now also supports Onion-Location, but this doesn’t remove the need to add Alt-SVC support.

[diracdeltas]

bumping this in priority since it would help with cf captchas

[laserjobs]

Both Brave and Tor still ignore alt-svc and we are going on almost 5 years now, is there a reason this has not been implemented in the browsers?
alt-svc: h2="cflare2nge4h4yqr3574crrd7k66lil3torzbisz6uciyuzqc2h2ykyd.onion:443"; ma=86400; persist=1
https://blog.cloudflare.com/cloudflare-onion-service/

[micah]

@laserjobs what do you mean that Tor ignores alt-svc?

[laserjobs]

@micah when I make a request with tor enabled to a cloudflare proxied site with the Cloudflare Onion Service enabled. The browser still has the header alt-svc: h2="cflare2nge4h4yqr3574crrd7k66lil3torzbisz6uciyuzqc2h2ykyd.onion:443"; ma=86400; persist=1 that should not be present when using the cloudflare tor circuit

Try going to https://tor.cloudflare-dns.com
You should see the alt-svc with https://dns4torpnlfs2ifuz2s2yf3fc7rdmsbhm6rw75euj35pac6ap25zgqad.onion
No redirect happens