IPv6

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Issue details

I have just submitted our game to Apple for reviewing. They have rejected our game because of IPv6. This is their reply: “We discovered one or more bugs in your app when reviewed on iPad and iPhone running iOS 10.0.1 on Wi-Fi connected to an IPv6 network.We found the app displays an error message upon launch. Please run your app on a device while connected to an IPv6 network (all apps must support IPv6) to identify the issue(s), then revise and resubmit your app for review.” I want to know that does Libgdx support IPv6 ? How to implement IPv6 in my code ?

Thanks !

Version of LibGDX and/or relevant dependencies

gdxVersion = ‘1.9.4’ roboVMVersion = ‘2.2.0’ box2DLightsVersion = ‘1.4’ ashleyVersion = ‘1.7.0’ aiVersion = ‘1.8.0’

Stacktrace

//Please provide the stacktrace if applicable 

Please select the affected platforms

• Android
• [x ] iOS (robovm)
• iOS (MOE)
• HTML/GWT
• Windows
• Linux
• MacOS

[noblemaster]

I see. I think I got a solution. Supplying an IPv4 address won’t work over a IPv6-ONLY network. Rather than using an IP address directly, please add a DNS entry for you server so the DNS entry maps to both IPv4 and IPv6.

Create e.g. a DNS entry such as “server01.example.com”. Then add both the IPv4 & IPv6 address (you should have both from your provider!) to that entry.

In the game, use “server01.example.com” to connect to the server! I believe that should do the trick. The network will internally use either the IPv4 or IPv6 address. You won’t need to worry about it.

[noblemaster]

I am the original developer of the Gdx.net backend. Is that what you are referring to? Also, what are you exactly trying to do? Are you creating a socket connection? Are you doing an HTTP request? A code sample would go a long way too.

Generally, Java supports both IPv4 and IPv6. I assume the same will hold true for the RoboVM backend. I haven’t done any tests yet. It’s possible this needs fixing? Generally this “fix” wouldn’t have to be done on your end, but a patch would have to be added to RoboVM. If it’s necessary, I don’t think it will be too difficult but then you never know 😃

Anyhow, I have an app that I am going to update soon. It uses Gdx.net/HTTP. If I get the same error, I’ll investigate & fix.