Late night #activitypub interop hacking.

[heathenstorm@mastodon.social]

Late night #activitypub interop hacking. Again.

Has anyone else had trouble with the #pixelfed shared inbox?

Seems hits to /f/inbox don't send a username. Worker gives the error: "ActivityHandler: No username provided, skipping job"

Likes from self-hosted #mastodon go to the user inbox, Boosts and Comments go to the shared one.

I disable shared inbox in settings and Mastodon still sends to /f/inbox even though I've refreshed the pixelfed profile.

At least I know why it's happening now!

[julian@activitypub.space]

heathenstorm@mastodon.social I don't think it's wise to disable the shared inbox... I imagine it's just cached at the domain level once it is discovered (though that can differ between implementations of course.)

You mean that when you receive activities from Mastodon to Pixelfed's shared inbox, there is no username?

[thisismissem@hachyderm.io]

@heathenstorm mastodon is probably caching the actor and doesn't realise that it's changed on the pixelfed side.

So you likely need to dispatch for each actor on the pixelfed server an update to the actor to all servers.

[thisismissem@hachyderm.io]

@heathenstorm that is, configuration changes like that only change what pixelfed serves / pushes from that point in time onwards, but other software may be caching actors, in order to let them know the actor has changed, you need to publish an Update activity on the Actor.

So just setting that configuration value to false does nothing as far as anyone else is concerned, because they've already a copy of your actor document, and they haven't been told it's been changed.

[thisismissem@hachyderm.io]

@heathenstorm why you're getting "No username provided" on the shared inbox though, I've no idea.

[heathenstorm@mastodon.social]

@julian That seems to be the case.

It could very well be the docker stack I'm using (elestio/pixelfed behind traefik) where something important gets stripped, but that's guesswork for now until I can effectively log what's being POSTed to the inbox.

Just weird that Likes go to the user inbox and boosts / comments don't.

[heathenstorm@mastodon.social]

@thisismissem I believe I refreshed the profile on Mastodon. (From admin, got the 'successfully refreshed' notice and the relevant URLs were hit on Pixelfed)

However, the profile on Mastodon still lists the shared inbox after disabling AP_SHAREDINBOX in Pixelfed config and refreshing.

The only difference being POSTs to /f/inbox are no longer processed by the worker.

Checking my pixelfed install via browser.pub shows the shared inbox still listed.

Running Mastodon 4.5.2 still, if that helps.

[thisismissem@hachyderm.io]

@heathenstorm right, so Pixelfed isn't responding to your configuration change (which no one else will know about unless you explicitly tell them)

I recall Pixelfed had some command to clear its cache of config, it's in like the CLI commands section of the docs.