going from Wifi to 3G -- stops stream and cannot resume in iphone development

i am developing radio app i have got one issue ie when going from wifi 开发者_开发问答to 3G stops streaming and can't resume again getting wifi or 3G.It is continuous buffering.

Please suggest.

Thanks Basanth

you must look into apple Reachability API's

Blog tutorial :

http://www.raddonline.com/blogs/geek-journal/iphone-sdk-testing-network-reachability/

http://www.xprogress.com/post-40-iphone-internet-connection-check-wifi-3g-edge-something-like-reachability-h/