We now have a first python sleekXMPP implementation of two experimental
extensions published.
XEP 323 
http://xmpp.org/extensions/xep-0323.html
XEP 325 
http://xmpp.org/extensions/xep-0325.html
The code is merged into the official develop branch of  sleek on
https://github.com/fritzy/SleekXMPP/tree/develop
We will continue working on the implementation in
https://github.com/joachimlindborg/SleekXMPP/tree/xep_0323_325  If you
would like to participate please fork from my  repository
There is an easy to use example that you can start using
https://github.com/joachimlindborg/SleekXMPP/blob/xep_0323_325/examples/IoT…
please send any feedback
-- 
Regards
Joachim Lindborg
CTO, systems architect
Sustainable Innovation AB
Adress: Box 55998 102 16 Stockholm
Besöksadress: Storgatan 31 (Malmgården)
Email: Joachim.lindborg(a)sust.se, 
www.sust.se
linkedin: 
http://www.linkedin.com/in/joachimlindborg
Tel +46 706-442270