Implement XEP-0198: Stream Management

Partial (acking and redlivery) implementation done.

We have an initial implementation for XEP-0198 in the master repo now:

https://github.com/igniterealtime/Openfire/pull/259

It supports basic ack, but not the stream resumption capabilities. I believe this feature will be released shortly in the pending 4.0 version.

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!

Tigase has XEP-0198 implemented already, I am not sure if this will help the dev working on this or not.

https://projects.tigase.org/projects/tigase-server/repository/revisions/207755c3b97bf4aaa5adf0c21a92021da89fdd29/entry/src/main/java/tigase/server/xmppclient/StreamManagementIOProcessor.java

I just saw this blog:

https://www.atklique.com/bridge/blog/?q=node/5

Would it be helpful for your implementation of XEP-0198?
Can't it be done quickly with this way?