I use AFAmazonS3 (which is an extention of AFNetworking)
It has AFHTTPRequestOperation that is created and added to the operation queue
[self.operationQueue addOperation:requestOperation];
The thing is that when the app goes to background it stops uploading and doesn't resume when it goes back.
How can I acheive it?
I saw some solutions but it was for the old version of AFNetworking