Bonfire shared inbox usage
Technical Discussion
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Hi @mayel@sunbeam.city, does Bonfire utilise the
sharedInboxvalue?I noticed this come through my nginx logs today:
128.140.127.206 - - [21/Jan/2026:19:58:04 +0000] "POST /uid/1/inbox HTTP/1.1" 500 128 "-" "https://btfree.social - Bonfire ActivityPub federation" "-"/uid/1/inboxis an endpoint specified in my user'sinbox, but that actor also sends"endpoints":{"sharedInbox":"https://activitypub.space/inbox"}, so wanted to double-check that Bonfire uses it. It should, it helps reduce the number of requests to send if multiple users belong to the same server :smile: -
@julian@activitypub.space Hi yes we send to sharedInbox when there's more than one recipient on that instance, otherwise direct to to the user's inbox.
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@julian@activitypub.space Hi yes we send to sharedInbox when there's more than one recipient on that instance, otherwise direct to to the user's inbox.
@mayel@bonfire.cafe oh that is an interesting choice. I suppose that makes sense, I never really thought about it. NodeBB just sends to shared inbox if available.
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@julian @mayel subtle difference: sharedInbox is not delivering to the individual inboxes, and it is not strictly delivering to the addressed actors either. what it *actually* means is "make the shared inbox decide who gets it, using the addressing as a *hint*". in theory, the shared inbox is supposed to distribute the activity to the appropriate inboxes internally. this, of course, leads to Problems when the shared inbox doesn't understand a specific recipient (like with private collections)
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@julian @mayel subtle difference: sharedInbox is not delivering to the individual inboxes, and it is not strictly delivering to the addressed actors either. what it *actually* means is "make the shared inbox decide who gets it, using the addressing as a *hint*". in theory, the shared inbox is supposed to distribute the activity to the appropriate inboxes internally. this, of course, leads to Problems when the shared inbox doesn't understand a specific recipient (like with private collections)
@trwnh@mastodon.social that sounds like a them problem not a my problem 😝
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@silverpill @helge Alright, done:
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@julian Yes, just open a PR. It will be merged by a facilitator, but only if the author approves. Here's how it looks like: https://codeberg.org/fediverse/fep/pulls/758
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@silverpill @helge I couldn't find any explicit guidance for external contributions in FEP-a4ed. So the expected process would be to simply open a PR? Would that be merged by the respective FEP author or by a repository facilitator?
As you might know, I've been documenting FEP-044f implementations in Bridgy Fed's GitHub issue about that FEP, but I've been hesitant to dump reviewing/merging work on the sole author of FEP-044f just to “upstream” the information.
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@julian The site was built by @helge, I also contribute to this project from time to time.
Yes, authors are responsible for maintaining implementation lists, but FEP process is meant to be collaborative and others can add missing implementations by opening a PR.
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@silverpill Is that your work? Thanks!
Still, it makes me think even more that we should have some sort of software project × FEP matrix for implementation status info that's more easily editable by anyone (wiki-style?) and not solely reliant on the FEP authors keeping the implementation list up to date. Something like https://correct.webfinger-canary.fietkau.software/#implementation-status but collaborative.
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FEP website now displays the number of implementations for each implementable proposal:
https://fediverse.codeberg.page/fep/final/
These numbers are based on the information that authors provide in the "Implementations" section of a proposal.
By default, proposals are informational, so authors need to opt in by adding type: implementation to the metadata block.
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@mapache@hachyderm.io yes that's correct, Lemmy, Piefed, NodeBB, and Mbin.
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@julian interesting! thanks for sharing. Is the threadiverse forums like nodebb or lemmy?
