How to send data from Processing to UNITY iPAD app?

Hi.

I'm looking ways to send data from Processing to a UNITY created iPAD App. We will be collecting real-time data via Arduino into Processing and want that data be displayed/alter variables etc in iPAD App.

So far, I've looked into using JSON to GET and POST the data via a web server. However, I was wondering if there any other methods I could explore? E.g. Could I send OSC from Processing to a web server and pull it into UNITY?

Any advice would be appreciated.

Darius