this post was submitted on 02 Sep 2024
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Using messaging protocols (XMPP, Matrix, etc) for federated social media vs. ActivityPub? (lemy.lol)
submitted 2 months ago by matcha_addict@lemy.lol to c/fediverse@lemmy.world
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From a practical sense, ActivityPub may be the obvious choice as it gives easier interop with the largest federated platforms.

But what else? There are existing platforms built on these protocols, such as movim for xmpp, and another for matrix I forget.

From a technical standpoint, are there any major pros and cons?

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[–] LodeMike@lemmy.today 5 points 2 months ago* (last edited 2 months ago) (2 children)

Matrix is too hefty. XMPP is stateless sort of. ActivityPub just works.

[–] rglullis@communick.news 7 points 2 months ago (1 children)
[–] LodeMike@lemmy.today 0 points 2 months ago (1 children)

And?

[–] rglullis@communick.news 7 points 2 months ago (1 children)

And... that if "activitypub just works" , so does XMPP.

And... XMPP servers offer better performance and taking less resources than any of the leading AP projects.

And... XMPP already has E2EE.

[–] LodeMike@lemmy.today 1 points 2 months ago* (last edited 2 months ago) (1 children)

And what do you do about other clients? What happens when the user wants to clear messages on the server when they're fetched, but doesn't want to do that for the social network rooms? What about moderation.

XMPP is good at a very specific thing and I don't think its users would like all the necesary changes.

[–] rglullis@communick.news 4 points 2 months ago (1 children)

None of your questions are about the protocol, but implementation details of the application.

[–] LodeMike@lemmy.today 1 points 2 months ago (1 children)

My point is that the protocol doesn't work well for the use case.

[–] rglullis@communick.news 3 points 2 months ago

And my point is that the your complaints are not related to the protocol, but the applications using it.

Not only that, we are talking about different layers of the OSI model. XMPP should be compared with HTTP, not ActivityPub. There is absolutely nothing stopping someone from implementing the ActivityStreams vocabulary on XMPP.

[–] matcha_addict@lemy.lol 3 points 2 months ago (1 children)

From my understanding developers often complain about activityPub. Can we really say that it "just works"? Federation and interop issues are common as well.

[–] LodeMike@lemmy.today 2 points 2 months ago (1 children)

It works better than anything else.

[–] matcha_addict@lemy.lol 6 points 2 months ago

It may seem so due to its success, but I'd argue its success was more tied to luck and timing than technical superiority.

Mastodon was growing and "new" during the period of the decline of social media, and specifically during several moments of Twitter having issues with moderation, and later on acquisition by musk.

Similarly to lemmy, the Reddit third party API fiasco.

I don't think this means that it works better than anything else. It was just the most obvious choice to users at the time.