this post was submitted on 11 Sep 2024
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I'd argue XMPP is less ideal than Matrix because groups are located on a single server, which makes them easier to take down than Matrix' replicated state.
Running any P2P/decentralized protocol over I2P seems to be the best for privacy and censorship-resistance. I2P already works great for torrents, except for it's speed and lack of users/seeders.
@[email protected]
The problem always comes down to usability and barrier to entry. Telegram is popular because it's great to use, and doesn't moderate much. More private services rarely (never?) reach the level of usability most people expect, often simply because of it's architecture.
That is true, but it's never been a problem in my relatively long experience with XMPP: some server software can be used as a cluster and distributed, making it highly available (basically, the whole of WhatsApp runs on a fork of ejabberd), and the comparatively tiny resource usage of XMPP contributes to its stability.
XMPP does have a spec for F-MUC (distributed rooms somewhat like Matrix, many years before Matrix) and my rationale as to why it never picked up despite a whole decade of "competition" from Matrix is that it's a problem that just doesn't need solving. The price to pay for it is hefty: Matrix resource usage (bandwidth, CPU, RAM) is insane, its protocol complexity makes it a single-vendor implementation (which is risky on very practical grounds), and it's not even bulletproof for the niche use-case it set to tackle: in the end, your identity server on Matrix remains centralized.
You can tell that I'm partial to XMPP, but that's only after having been a service operator for years, with my original expectations largely favouring Matrix.
I just signed up for Matrix because you mentioned it.
I installed the Element front end, because that seems to be the most popular.
It looks like IRC, which is fine if that’s all you need.
It also appears that anything beyond text has to be hotlinked, which is understandable, given that the amount of data transmitted for redundancy between home servers is exponential with the number of home servers.
Really very similar to Lemmy, where the identity of each group is tied to a particular server, e.g. lemmy has [email protected] but Matrix has #anime:matrix.org
So what happens if matrix.org goes away or decides the server admin wants to be hostile to #anime?
A matrix room can have multiple identities/adresses set by the room admin. E.g. the admin of !anime:matrix.org could add another adress for the same room on !anime:myanime.instance. Because the room is replicated on all other participating servers, this would let the room continue to exist on the network (besides all matrix.org users not being able to access it).
Matrix does have a single "room id" per room, which looks like it gives the original creating home server more rights, which it does not. E.g. !ehXvUhWNASUkSLvAGP:matrix.org
Any server admin does not have any more rights over a room than another server admin. They can ban the room for their local users, but this does not stop federation as a whole.
[1] https://github.com/element-hq/element-meta/issues/419
[2] https://app.element.io/#/room/#synapse:matrix.org/$htJmba92wLTP9AoFg4eEWi9IXpgwvXr6G9Sa-kBsNNs
[3] https://matrix-org.github.io/synapse/latest/admin_api/rooms.html#delete-room-api
Matrix allows for media to be hotlinked, but it can also be replicated across servers.
I.e. if I send an image in a room and look at the source (available on many web clients), the image url looks like the following
"url": "mxc://matrix.org/qGgUKuZuHcRsWAhSfqKnmtiX". The actual image (and preview) then gets fetched by your server from my server [4], and then gets send to your client.It's important to note that a server isn't required to download all media. If a user does not read a room, it might not download the media from another server, until the user actually wants to view it (or rather that part of the room history). Or a server admin might clean up the media store to free up space.
[4] https://matrix.org/docs/spec-guides/authed-media-servers/
@[email protected]
thats a possibility, that is why either you sign up with a provider you trust or run your own server. that is the appeal of distributed network.
Same thing that happens when a Lemmy instance goes away, right?