I am publishing a small #ActivityPub / #fediverse project: https://fietkau.software/webfinger_canary and @canary

Julian Fietkau

@mro You do a WebFinger request on the AP host domain, and its response will give you a subject with the correct handle domain. See for example this account: https://toot.kif.rocks/@team and its WebFinger response: https://toot.kif.rocks/.well-known/webfinger?resource=acct:[email protected] This is a Mastodon split-domain setup.

The process is described here: https://www.w3.org/community/reports/socialcg/CG-FINAL-apwf-20240608/#reverse-discovery (step 4 is important for this)

Marcus Rohrmoser 🌻

Hi @julian,
the document is a report from @evanprodromou mid 2024, not a standard and not part of #AP. And at step 4 it reads "4. Optionally:". But it proposes a solution - thanks for bearing with me. So the #rfc7033 subject: "acct:[email protected]" would be it.

Feels hacky, IMO the profile should be explicit about the handle just like the way round #webfinger is explicit about the actor id.

Julian Fietkau

@mro There is a suggested FEP to include the WebFinger resource in the actor document: https://codeberg.org/fediverse/fep/src/branch/main/fep/2c59/fep-2c59.md But I have not seen it implemented anywhere. In the meantime, the hacky approach works and is reasonably popular.

I don't want to push you into supporting something you don't want to support. Just keep in mind that your software is showing different account handles than Mastodon for some users.

Do you want me to add Seppo to the overview table anyway?

Marcus Rohrmoser 🌻

Hi @julian,
a pity @silverpill doesn't use https://www.w3.org/TR/xmlschema-2/#anyURI and doesn't keep the acct:[email protected] from https://www.rfc-editor.org/rfc/rfc7565.html.

And yes, I'd be happy if you add #Seppo!

Julian Fietkau

@mro I see now that you were active in the discussion thread: https://socialhub.activitypub.rocks/t/fep-2c59-discovery-of-a-webfinger-address-from-an-activitypub-actor/3813 my bad for retreading ground you already know.

@silverpill

silverpill

@mro @julian Could you elaborate? Where should I use anyURI?

silverpill

@mro Is it related to me trying to follow Seppo actor?

I just received a Create(Note) where Note doesn't have attributedTo property (but is has actor property, which should be used only on activities afaik).