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Fun with Federation: Lemmy edition

ActivityPub
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  • Backfilling Conversations: Two Major Approaches

    ActivityPub activitypub fep 7888 f228 171b
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    julian@community.nodebb.orgJ
    > One weakness I have noticed in NodeBB's current federation is that posts which are in reply to a topic (e.g. a Lemmy comment) show up as individual threads until (or if) the root post of that topic shows up in the local NodeBB. No, Lemmy does not implement either strategy, they rely on 1b12 only. If NodeBB is receiving parts of a topic that don't resolve up to the root-level post that might be something we can fix. I'll try to take a look at it.
  • APx is finally available on crates.io / docs.rs

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    julian@community.nodebb.orgJ
    silverpill@mitra.social nice job! Congratulations on the release now you must maintain it for free forever.
  • Should I present a topic at FediCon?

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    julian@community.nodebb.orgJ
    rwg@aoir.social I'm not actually sure! You'll have to ask reiver@mastodon.social about that one. Let me know too!
  • #activitypub #mastodev

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    julian@community.nodebb.orgJ
    thisismissem@hachyderm.io oh god do I have to handle this too
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    julian@community.nodebb.orgJ
    I suppose you're right in a way. The context owner is not supposed to be set by someone other than the context owner. It's a fallback mechanism intended for better compatibility with Mastodon. When a group is addressed and it is one of the local NodeBB categories, it will assume control If it is another group that it knows about but isn't same origin to the author, then no category is assumed.
  • Pleroma Webfinger compatibility

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    julian@community.nodebb.orgJ
    trwnh@mastodon.social before, I was not sending Accept at all, now I am sending application/jrd+json.
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    julian@community.nodebb.orgJ
    Hey rimu@piefed.social thanks for responding (and sorry for the late reply!) I am not married to the Announce([Article|Note|Page]) approach, so I am definitely open to Create([Article|Note|Page]) with a back-reference. I think I went the former direction because there is a known fallback mechanism — the Announce is treated as a share/boost/repost as normal. However, sending the Create also is fine I think. However, do we need a backreference? In my limited research, it seems that Piefed, et al. picks the first Group actor and associates the post with that community. If I sent over a Create(Article) with two Group actors addressed, could Piefed associate the post with the first, and initiate a cross-post with the remaining Group actors? Secondly, is how to handle sync. 1b12 relies on communities having reciprocal followers in order for two-way synchronization to be established. On my end since I know it is cross-posted I will now send 1b12 activities to cross-posted communities, but can Piefed, et al. send 1b12 activities back as well, in the absence of followers? cc andrew_s@piefed.social nutomic@lemmy.ml melroy@kbin.melroy.org bentigorlich@gehirneimer.de
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    julian@community.nodebb.orgJ
    bh4-tech that's good to know, thank you!