I plan a small house automation system. Some decentralized ethernet shields collect information about temperature or a open or closed window and so on.
One central shield collect the collected informations of the distributed shields and I would like dilay this data via a http-home server.
I think udp is the best for that.
You can add the udp class to the existing sketch, it will work together.
Do you use NTP with the ethernet shield ? That uses the udp class, you can use that same class for other uses.