iOS app rejected because app crash on iOS 10.2 on ipv6

Question

I have uploaded my app to Apple store. I am using iOS 10.2. After upload, I got a rejection message:

Your app crashes on iPad and iPhone running iOS 10.2 connected to an IPv6 network when we:

Specifically, we found that the app crashes after sending messages on Wi-Fi

How can I solve this?

Answer 1

If you app contains webservices and you have implemented NSURConnection then please convert all NSURLConnection to NSURLSession . .

Answer 2

My App got rejected for the same reason, but it was not the issue. The reason my app got rejected because it got crashed on login button click.

It was working when i compile and run with xcode (ie xcode 8.2.1) but apple said it was crashing.

So i tried running it in release mode because we usually run our app in debug mode when we run on xcode.

from

to

And my App crashed when i ran it on release mode and i found the bug, it happened when the compiler tried to optimise a decryption function. I think there is some issue with the new llvm 8.0 compiler.

Now my App got even approved by AppStore.

Answer 3

The answer is fairly simple, you're going to have to try and reproduce the crash and fix it.

Apple won't let apps into the App Store of which it finds crashes for. I'd recommend finding a friend/family member who has an IPv6 enabled network (if you can't enable it yourself) and attempting to use your app in various conditions under that network.

Answer 4

The App Review network, like the networks deployed by service providers, does support IPv6-to-IPv6 connectivity. Thus, if your server supports IPv6, your app will talk to it directly, without going through the NAT64 translator.

Please check your link is support ipv6 or not use this LINK

and read more

Answer 5

Just add a CDN (Example: Cloudflare) to your domain, change nameservers accordingly and make sure IPv6 compatibility feature is turned ON. This worked for me