[IOT] Feedback on pubsub for IoT

Cramer, E.R. (Eelco) Eelco.Cramer at tno.nl
Mon May 18 07:49:00 UTC 2015

Hi Davide,

Thanks for your interest in the topic!

I could be interested in working on this, if you start to write it, please consider to include also me.


About this idea...have you thought about the possibility to use collection nodes on the server side, to implement this? My suggestion for the subscriptions using wildcards is to use the collection nodes provided by the XEP-0060 (http://xmpp.org/extensions/xep-0060.html). The idea is to create a hiearchy of nodes, inserting the ones of the "Things" (leaf nodes) in collection nodes related with the type of data published or their location. Then, when the server component receive the subscription containing the wildcards, it can translate the request in a subscription to the collection node(s) corresponding with the request.

That is a nice idea. I like the separation of collection and nodes. Are nested nodes possible like you described?

What worries me is that pubsub collection nodes (http://xmpp.org/extensions/xep-0248.html) is a deferred XEP. Do you know if there are any XMPP servers that implement this? It would be worth checking why this XEP was deferred…

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