Selfhosted
A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.
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Self-hosted messaging was solved decades ago, it's called XMPP or Jabber depending on who do you ask. There are a number of services for it, such as Prosody or ejabberd, and there are both client apps (eg.: Conversations for Android, Gajim or Dino for PC) and a number of webclients (such as converse.js which can actually be shipped via a ejabberd install).
That said you could just set up an alternative Signal client that allows for custom servers, since the centralization of Signal only really exists at the level of the client only connecting to Signal's servers.. Signal's people have pointed this out themselves, when offering bridge setups so that people could connect from Iran or other countries where those countries blocked Signal's endpoints.
I unfortunately wouldn't call it solved. I host XMPP and Matrix, (and a STUN/TURN server, and a Livekit server for the modern matrix calls...), and nothing is perfect.
Prosody is really great because it's so no-nonsense. It doesn't hog resources or choke up like matrix servers do if you suggest to them that maybe they could deliver this text message? :3 Oh, no, it's "hold for 2 weeks despite the recipient being online" again? Ok...
But XMPP is still incredibly hard to recommend for me, because
Hence why I still mostly use Matrix... Even though it's such a stupid, stupid protocol.
@smiletolerantly @lambalicious "no way to read old chats on new devices,"
If you're talking about unencrypted messages, then prosody's mod_mam (https://prosody.im/doc/modules/mod/_mam) will store messages for a configurable amount of time and allow all devices to sync older messages.
If you're talking about encrypted messages, you have two choices. OMEMO is the standard means for encrypting XMPP messages, & only works in forward mode; you can't decrypt old messages. OpenPGP, however, decrypts old msgs.
https://prosody.im/doc/modules/mod_mam
Yes, encrypted (otherwise what's the point? 😄). I'll admit I haven't tried the PGP version yet. How's client support? For OMEMO it's pretty lackluster, from what I've heard not much different for PGP?
In any case, perfect forward secrecy is definitely a good thing / strength, but I'd like a way to re-encrypt messages from an old device, just as an example, during the setup process; or a standardized way to export all history; or just something beyond "either use worse or no encryption, or loose access to your history eventually".
@smiletolerantly @lambalicious tbh though, I've never used openpgp with xmpp because I prefer OMEMO's forward secrecy. Transferring/introducing a new device, I usually back up chats on the old/current device and import it into the new device's client.
+1 for prosody. But you'll still probably need a turnserver for calls, won't you?
I'm unsure what's the progress status over there so I'll say "yes?".
Which reminds me, I think there is a binding somewhere that lets XMPP send SMS messages, but dunno how if any is that related to phone call compatible audio.
I have literally never heard anyone mention xmpp outside of Lemmy. Anyways it is a dead technology due to how fragmented it is along with its reliance on XML
What's so wrong with XML? All web browsers use it (HTML is literally slightly-freeform XML), Libreoffice also does (XML is part of the Open Document format spec), Freedesktop... eeeh, let's not mention them, and so far we are doing golden.
XML is really inefficient and sometimes vulnerable to denial of service attacks due to it being hard to parse.
Oh yeah, very dead... omg so dead... like, no one uses it... at all...
if the /s isn't obvious