Default Advice needed on Bluetooth application

Hello XDA developers,
I am new here. I am sorry if I'm posting this on the wrong section.

I have undertaken a project entitled Bluetooth Hotspot. As the title suggests it follows the same principle as WiFi hotspot but shares internet through Bluetooth. I have seen Foxfi, PdaNet, BlueDUN, etc none of them seems to work. Because after connecting the Bluetooth devices the applications just start broadcasting(both systems cant be server right?). But BlueDUN seems promising but it works for computers not other android devices. Is there any other way to share internet between two android mobile phones(not tablets) through Bluetooth? Or can I reuse any of the application's code?

[INFO] Before I started this project I had the idea of developing a proxy server on one mobile and proxy client on another mobile so the internet packets can be shared as Bluetooth packets. But I don't know where to start with that idea. If anyone can point to any ideas, tutorials, references, guidance I would greatly appreciate it.

Sorry if my English is bad. Waiting for your answers. Thanks in advance.