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Understanding ActivityPub and Federation (mastodon.social)

submitted 1 year ago by JustusWingert@mastodon.social to c/programming

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Understanding ActivityPub and Federation

I have tried to understand how Federation works but I'm getting a feeling that there's some rather large gaps here. My first attempt was to find an API implementation in python, 3 wasted hours of my life later and I'm making requests.request() calls like it's 2007. And I still can't access the content as presented on the webinterfaces. There doesn't seem to be a way to access eg the communities tab via activitypub? Any Help?

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[–] russmatney@programming.dev 3 points 1 year ago (1 children)

Maybe you could dig into a few open-source clients to see how they work with it?

E.g. someone shared a basic lemmy viewer in godot the other day: https://github.com/sevonj/gdlm - it’s rough but probably not too much to read through. Was posted in /c/godot: https://programming.dev/post/48482

[–] JustusWingert@mastodon.social 1 points 1 year ago

@russmatney thanks for that one! I did look into how other clients are doing stuff quite a bit. The one you mentioned simply takes a valid endpoint (ie a lemmy community AcitivityPub-id, meaning the URL to it). The issue I'm facing is finding those endpoints. In theory you'd want to be able to find valid endpoints for an instance somehow, which I just can't seem to do.