iOS Question NSUrlSession in background

[Semen Matusovskiy]

Does someone has experience/alive sample with NSURLSession in background ?
I need to upload groups of files (approx. 100-200 Mb) and to receive a comfirmation from server. Each file has separate parameters in URL and I need to correct header also.

I used a service in In Android and sent file by file (this works even if app is not started). In IOS I did something similar by timer, but this does not work in background mode and sometimes there are troubles, because users like to close an app.

 

[Erel]

You can get a few more seconds with: https://www.b4x.com/android/forum/threads/lack-of-services-in-ios.130536/#post-821810

 

[Semen Matusovskiy]

Some additional seconds in foreground are not very useful for upload. As I understood, it is recommended to use NSURLSession and to send whole packet at once. IOS will send files in background and will activate your app in Completition handler. Another question that l did not see good obhective-c samples.