NSURLSession Background Downloads take 2-3 minutes to start.

Originator:padraig.kennedy
Number:rdar://21366887 Date Originated:12-Jun-2015 03:53 PM
Status:Closed Resolved:8-Jul-2015
Product:iOS SDK Product Version:9.0
Classification:Serious Bug Reproducible:Always
 
Summary:
NSURLSession Background Downloads take 2-3 minutes to start.

Steps to Reproduce:
Try to download something with NSURLSession with a background configuration.

Expected Results:
It should start within a few seconds. 

Actual Results:
It takes a few minutes to start.

Regression:
In iOS 8.4 background downloads almost always started within a few seconds (unless there was a backlog of downloads)

Notes:
I have set the NSAppTransport key to disable ATS, so that should not be the issue.

Comments


Please note: Reports posted here will not necessarily be seen by Apple. All problems should be submitted at bugreport.apple.com before they are posted here. Please only post information for Radars that you have filed yourself, and please do not include Apple confidential information in your posts. Thank you!