share file among different ipod/iphone/ipad
<p>I have an app in which some data file will be created.
The app has iphone/ipad version both.</p>

<p>some customers hope I can add the sharing function for them to exchange/share file.</p>

<p>I think maybe I can use FACEBOOK api to ask the users logged on their facebook account and exchange their current ip address, then do p2p file transfer.</p>

<p>I am not  sure if it is the best way for this requirement and</p>

<p>if sure, is there any p2p sdk for objective-c to do this?</p>

<p>Welcome any comment</p>

<p>Thanks</p>
