Tigase has XEP-0198 implemented already, I am not sure if this will help the dev working on this or not.
First I want to say that you guys are really doing a nice work Openfire, and I use it. My client says that my server (openfire 3.10.2) does not support Stream Management. Can you implement this XEP-0198 feature as quickly as possible as it is very essential for a real-time server. Thank you so much!
We have an initial implementation for XEP-0198 in the master repo now:
It supports basic ack, but not the stream resumption capabilities. I believe this feature will be released shortly in the pending 4.0 version.
Partial (acking and redlivery) implementation done.