With XMPP you can build a webchat in a breeze, so nothing can go wrong, right?
The HelpIM chat software is about 10 years old now. We have rewritten it three times and with each rewrite we managed to make some major screw-ups. Recurring issues are: "how to reliably deliver the chat over the web", "how to route the messages within the server" and "how to authenticate over both HTTP and XMPP". With this talk I will save you from making the same screw-ups as we did.
Speakers: Winfried Tilanus