discoverHost throws error on iOS

[ocfmem]

Using client.discoverHost on Android and desktop works without issue. But it fails on iOS (using for RoboVM for port). (For information creating a server on iOS works perfectly, you can connect to it with an Android Client and all goes well. )

The stack:

[WARN] java.lang.Class: Class.forName() failed to load 'android.os.Process' Exception in thread "Thread-7" java.lang.IllegalArgumentException: sockaddrToInetAddress bad ss_family: 0 at libcore.io.Posix.recvfromBytes(Native Method) at libcore.io.Posix.recvfrom(Posix.java) at libcore.io.BlockGuardOs.recvfrom(BlockGuardOs.java) at libcore.io.IoBridge.recvfrom(IoBridge.java) at java.net.PlainDatagramSocketImpl.doRecv(PlainDatagramSocketImpl.java) at java.net.PlainDatagramSocketImpl.receive(PlainDatagramSocketImpl.java) at java.net.DatagramSocket.receive(DatagramSocket.java) at com.esotericsoftware.kryonet.Client.discoverHost(Client.java)

Tested with Kryonet 2.20 and 2.21

[NathanSweet]

Very cool to hear it mostly works with RoboVM! I'm afraid you'll probably have to go to RoboVM for help on the crash.

[ChetRippo]

Hi,

I'm getting this same error on kryonet 2.21 and latest libgdx/roboVM releases. Has anyone found a fix?

[NathanSweet]

Don't know about robovm, but discoverHost is of limited use.

-Nate

On Tue, May 20, 2014 at 8:17 PM, Brett Davis notifications@github.comwrote:

Hi,

I'm getting this same error on kryonet 2.21 and latest libgdx/roboVM releases. Has anyone found a fix?

— Reply to this email directly or view it on GitHubhttps://github.com/EsotericSoftware/kryonet/issues/57#issuecomment-43663408 .

[ocfmem]

Nope, I still have no fix for that as well as no workaround for now :/ I could not spend much time on it for now.

The only remaining issue is the discoveryHost.

2014-05-20 20:37 GMT+02:00 Nathan Sweet notifications@github.com:

Don't know about robovm, but discoverHost is of limited use.

-Nate

On Tue, May 20, 2014 at 8:17 PM, Brett Davis notifications@github.comwrote:

Hi,

I'm getting this same error on kryonet 2.21 and latest libgdx/roboVM releases. Has anyone found a fix?

— Reply to this email directly or view it on GitHub< https://github.com/EsotericSoftware/kryonet/issues/57#issuecomment-43663408>

.

— Reply to this email directly or view it on GitHubhttps://github.com/EsotericSoftware/kryonet/issues/57#issuecomment-43666037 .

[ChetRippo]

@NathanSweet I'm not sure I understand what you mean-Should I not be using DiscoverHosts? If not, do you have any recommendations for how to get similar functionality? The game I am developing needs to automatically connect players to each other.

[NathanSweet]

It only works on a LAN and even then depends on the network hardware and configuration. You should probably have a server for match making.

-Nate

On Wed, May 21, 2014 at 4:28 PM, Brett Davis notifications@github.comwrote:

@NathanSweet https://github.com/NathanSweet I'm not sure I understand what you mean-Should I not be using DiscoverHosts? If not, do you have any recommendations for how to get similar functionality? The game I am developing needs to automatically connect players to each other.

— Reply to this email directly or view it on GitHubhttps://github.com/EsotericSoftware/kryonet/issues/57#issuecomment-43761215 .

[ChetRippo]

Ah right, it's a LAN game though, not online.

[ntherning]

This is a bug in RoboVM caused by weird behavior in OSX/iOS when receiving empty UDP packets. We have pushed a workaround which seems to fix the problem. In any case you should close this as it's been confirmed to be RoboVM-related. See robovm/robovm#344.