something about Networking and Multitasking in IOS

Today I want to share about some technical details of

Networking and Multitasking in IOS.



Multitasking was a key feature of iOS 4. 


Multitasking allows your app to be put into the background and, from there, suspended. 



This is great for system responsiveness, 

but can seriously affect your app's ability to work with the network. 





for details, please kindly refer to 


https://developer.apple.com/library/ios/technotes/tn2277/_index.html#//apple_ref/doc/uid/DTS40010841




Thx and god bless the world.


^__^