Posts

After several month of hard work we just released Monal 6.0. This version comes with new artwork by Ann-Sophie Zwahlen, support for Audio-Calls funded by the EU’s NGI Assure via the NLnet Foundation and many other improvements and bugfixes. The full list of changes can be seen below: NEW: Audio-call support (This feature will not be available to users in China and macOS users!) Other changes: New Logo and new placeholder images by Ann-Sophie Zwahlen New “Add Contact” and “Contact Requests” UI Complete rewrite of OMEMO code Speed up app start Add support for SASL2 (XEP-0388) Implement XEP-0424: Message Retraction Add support for creating invitations (button only displayed if your server supports it, see https://docs....

In this new series, I want to shine some light onto specific parts of Monal’s internals. It’s dedicated to programmers or people curious about how Monal works internally. If you want to give some feedback, feel free to send an email to thilo@monal-im.org Handlers Handlers in Monal are something like serializable callbacks. In iOS the app can get frozen or even killed any time and the push implementation requires the complete app state to frequently transition between the Main App and the Notification Service App Extension (NSE)....

Axel Reimer recently created some good video tutorials about Monal and XMPP in general. These video tutorials can be found over here: https://www.eversten.net/videotutorials/. Currently the audio of these videos is German only.

I recently wrote a summary about push on iOS in the xmpp.org wiki. See over here for all the technical details and links to the documentation. I also talked about that topic in my talk “Modern XMPP - A story based on Monal” linked on the About page over here. For convenience I’d like to summarize some parts of that wiki entry in this blog-post, too. UPDATE: This post describes the way Monal implements push as well as the pitfalls of implementing it in another way....

SASL (Simple Authentication and Security Layer) as used in XMPP is broken. In this blog post I’ll try to explain why and propose some fixes. Update (2023-04-21): Since I originally wrote this blog post, I’ve had the ability to discuss several of my ideas with Dave (the original author of XEP-0388 dubbed SASL2), MattJ (one of the authors of the prosody xmpp server) and others. Most, if not all, of my issues are now addressed in a bunch of updates to existing XEPs as well as new XEPs:...