Socket Connection Problem at IOS

We are developing online game with Unity 2018.4. We used LiteNetLib and Lidgren as Network Library.

Our build works on android, IOS, PC.

We tested all things like low battery mode, slow connection mode with iPhone11 IOS 13.3.1 and all works well.

We sent our game to Apple for review.

After apple staffs are trying to connect our server. Peer connected but timeout in 5 sec. And at client side socket connection failed.

Same os same device works well at our side additionally, iPhone 7, İphone 8+ etc works, too. PC, Android versions works, too.

What can we do at this stage?

 

Perhaps try it with a proxy that conditions the line to have bad network connection, i.e., lots of dropped packets.

Also, be sure your server is fully reachable from places other than your own network.

Finally when your app times out try, modify your build to gather up as much debugging information in the run (error, what it was doing, etc.) and send it back home to you via some kind of eventing system, such as Flurry.

 

Are you just testing local to the server? Have you tested with high latency? You might have connection timeouts set too short for example, but won't notice when you have a 10 ms ping locally. I've got a friend on another continent I usually ask to try my game whenever I want to do some latency testing, but you could use a VPN service to bounce your connection off another continent to induce some latency.

If you want to get fancy, set up a computer as a network bridge using DummyNet, and use it to simulate any network conditions you want. Free software. Used to use it all the time when I worked for a network appliance company.

 

We tried at all network conditions on apple also we tried from about 8 different network.

I will look forward to flurry.

 

No tested on AWS EC2 instance with IPv4 and IPv6. Tested with high latency, too. Timeout was 5 seconds.

 

Hi, we have exactly the same problem.
Unity 2017.4.27f1 + Lidgren everything works well both in the local network and in WIFI and in 3g but it cannot connect to our server during the Apple review.
Our game has been in the Apple store since 2012 and we haven't changed anything in the network library.
It seems as if something has changed in their network or infrastructure.
Anyone have a suggestion?

Code (CSharp):

1. Apr 03 2020 21:23:53 IPV6 SOCKET CREATED!
2. Apr 03 2020 21:23:54 Connector.cs -> Connecting to :www.oursite.com 14240
3. Apr 03 2020 21:23:54 Netpeer.cs -> Connecting 37.xxx.xxx.xxx
4. Apr 03 2020 21:23:55 Netpeer.cs ----> Connect remoteEndPoint :::ffff:37.xxx.xxx.xxx:14240
5. Apr 03 2020 21:23:55 Must pass an IPv4 address to MapToIPv6
6. Apr 03 2020 21:23:55 Socket bound to :::0: True
7. Apr 03 2020 21:23:55 m_configuration.LocalAddress : ::
8. Apr 03 2020 21:23:55 IPV6 BIND TO :::0
9. Apr 03 2020 21:23:56 Network thread started
10. Apr 03 2020 21:23:56 Resending Connect...
11. Apr 03 2020 21:23:58 Resending Connect...
12. Apr 03 2020 21:24:01 Resending Connect...
13. Apr 03 2020 21:24:04 Resending Connect...
14. Apr 03 2020 21:24:07 Connector.cs ---> Disconnected

 

#kenfalco
I'm having the same problem, have you found a solution?

 

Same problem here, any solution ?

 

@XAfgun I have the same problem, everything works, except Apple headquarters. Did you manage to solve it?
made a question about it

Edit
people, XAfgun advises to use Telepathy library, and the issue seems to be caused by unity bug.

Telepathy: https://github.com/vis2k/Telepathy

Edit:

Indeed, this is a bug with Unity. After I used Telepathy, the app successfully passed the App Review

 

@XAfgun @IgorAherne there is a bit of info about this https://github.com/RevenantX/LiteNetLib/issues/353#issuecomment-647437330