Lemmy and NodeBB
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@Kichae @[email protected] That's an issue with all software federating via ActivityPub. If there isn't an existing follow relationship then the content isn't pushed to that user.
That's greatly simplifying it, of course. There's quite a bit more that actually goes into how it works.
In the case of the referenced topic, NodeBB automatically boosts replies that it receives from the category actor. When replies are made by NodeBB users, they are also addressed to everybody who has participated in the topic.
So given that, lemmy.ca should have received everything, at least since you started posting in it. In reality, there might be a connection issue between NodeBB and Lemmy, and that's what I'd want to verify first.
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No, I understand, it's just that I am following the group actors. I'm following the Lemmy communities from here, but new posts from them aren't arriving. I'm following the nodeBB topics from Lemmy, but nodeBB user comments aren't showing up there.
Lemmy only supports following group actors. So, Lemmy communities, gup.pe groups, PeerTube channels, NodeBB topics, etc. If NodeBB's federation is reliant specifically on following users, that represents a fundamental difference in the federation models between the platforms.
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Hmm, ok. Unexpected and unintended interactions (or lack there of) it is, then. Fun!
Edit: This comment, FWIW, showed up in Lemmy right away. So, whatever the issue with on-site comments not federating out seems to have been resolved. If no active intervention was taken, it may have been an issue with Lemmy 0.19.3 (lemmy.ca just updated the other day to 0.19.7, IIRC), or it may have just been federation queue issues.
Edit Edit: I love that federated comment chains can be forked without breaking federation. That's awesome.
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@Kichae yeah let's say a topic is forked in NodeBB. The baseline expectation is that federation doesn't break, but the ideal is that the fork is also federated so Lemmy (for example) would also fork the topic on their end, so it looks the same on either end.
Something we'd want to work on with ForumWG (specifically @[email protected])
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It's happening!
Almost everything here in the attached image is coming from [email protected], a Lemmy community (Christine Lemmer-Webber excepted). So, that's exciting! There's some inconsistencies with regards to whether the attached images are coming through, and whether community is being tagged or not, but that's just rough edges. Image-based communities aren't as much of a forum thing anyway.
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@Kichae With regard to some responses showing up and others not, it seems Lemmy does not process activities for communities if it has no followers.
So let's say you search for a remote community on Lemmy and make a post to it, and it crosses over to NodeBB. If that community has no local followers then even though you posted to it, any replies will not be accepted by Lemmy.
Seems like a bug or restriction on their part.
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@Kichae said in Lemmy and NodeBB:
No, I understand, it's just that I am following the group actors. I'm following the Lemmy communities from here, but new posts from them aren't arriving. I'm following the nodeBB topics from Lemmy, but nodeBB user comments aren't showing up there.
At least in my limited (and definitely not exhaustive) testing, bi-directional posting does seem to work.
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@julian said in Lemmy and NodeBB:
Seems like a bug or restriction on their part.
Yeah, at the very least it's not how people seem to expect it to work, but a lot about ActivityPub doesn't work the way people have been accustomed to. So I can understand that.
Personally, I have complicated feelings about whether a site even should be hosting groups for non-local users. I guess I can see a use-case for such a thing, but this whole endeavour feels like it needs to be local-first to me, rather than LARPing as homogeneous centralized social media.
