NSURLSession with invalid resume data

Question

I use [NSURLSessionConfiguration defaultSessionConfiguration] to config my url session.

I pause a task by calling cancelByProducingResumeData:

Answer 1

Anytime you relaunch your app, everything under tmp will be cleaned, I was experiencing the same thing, even though I tried to copy all the *.tmp, and paste back whenever app relaunches, it'll throw an error

My advice is that, you check if the *.tmp file is accessible, redownload from start if not