hmmmm. Do you own a webserver or use one at all for your highscore tables for your apps?
reason why I ask,, I don't think its possible to send data from one device to another via this app your going to design.
What you can do though is (which leads me onto the first bit).... can retrieve files from an http site
Unless you know Tier 2 ( C++ ) and implement it in there
Sending data over two devices without security (HTTPS) is major security risk and that's probably why it hasn't been looked into.
I certainly wouldn't want data to be transferred anywhere in an open network environment - which is what your wishing to do.
Unless I have totally misunderstood what your trying to do - my downfall
Damo