download the new version for apple The Outbound Ghost

Turning off the network link conditioner (restoring good network) doesn't trigger a retry, and neither does foregrounding the app. When the background requests fail, there seems to be an indeterminate amount of time before they are retried, sometimes hours. Should I expect any speed difference between requests sent in a background configured NSURLSession vs a foreground NSURLSession? Or is the difference I'm observing simply a result of the background request being throttled correctly while the foreground requests don't seem to be being throttled by the network link conditioner (or at least not to the same degree). Is this a bug in the Network Link Conditioner? I'm using xcode 14.3, OSX 13.4 on an M2 Macbook Pro, and my mobile device is an iPhone 13 on iOS 15.7.1

I observed that the background configured uploads progress at about 10kbs per second (in the ballpark of a 2g speed, I believe) while the foreground uploads progress at about 500kbs per second (much faster than I expect 2g upload to be). I used Charles Proxy to inspect the upload requests using both a foreground and background configured session. In fact, if I set it down to '2G Network - Better' an upload of a 5 min video never completes in the background, it seems to timeout and retry indefinitely, while the foreground session completes in just a few minutes. It all works, but I was disappointed to find that the background configured NSURLSession takes much longer to perform the upload than the foreground configured NSURLSession. I implemented this change, and have been testing it using the network link conditioner to simulate poor network conditions. I've been working to convert this to a background configured NSURLSession, with the idea that even if the uploads take a long time, if they're chugging away in the background then the users will get a better experience, and they can benefit from walking in and out of better network conditions throughout the day. The current implementation uses a foreground configured NSURLSession to perform the uploads, and so the users have to keep the app open in the foreground for the upload to progress. As a result, the uploads often take a long time and cause frustration.

Many of the current users mainly use the app in areas with poor network connectivity. I'm working on an app, whose features depend on users uploading large sets of images and videos.

Download the new version for apple The Outbound Ghost