Android multiplayer wlan: Android as host device problem

[mightyenigma]

Now on 4.24.3 it only can join by “open my.local.ip.address” sometimes. Doesn’t work most times. Never figured out why. Anyone know anything?!!

[WiwoRiko]

@aussieburger

Here’s a brief step-by-step for how I got it working. PS: I’m not a C++ programmer either and while the end result of these steps is it all works via blueprints, you do need to mess around with visual studio unfortunately:

1. link your unreal and github account as per: Unreal Engine on GitHub
2. download the zip source code of the engine: https://github.com/EpicGames/UnrealEngine/tree/4.10
3. have Visual Studio express installed
4. exact zip and run setup (will take ages)
5. run GenerateProjectFiles.bat as admin
6. open UE4.sln which will open UE4 source in Visual Studio
7. Build windows 64 | Development Editor (will take ages)
8. replace the two whole files from the pull request: https://github.com/EpicGames/UnrealEngine/pull/1820/files
9. Build Android | Development (will take ages)
10. Build Android | Shipping (will take ages)
11. Now you can open your freshly built engine with the fix in place. Located: \Engine\Binaries\Win64\UE4Editor.exe (it will take absolutely ages the first time you open and do anything)

For all that building stuff you can find documentation from Epic games on how to do it on this link: https://github.com/EpicGames/UnrealEngine/tree/4.10

I actually used branch 4.9 however all branches should work in theory

Annoying we need to do this - hope Epic can give feedback on putting the fix in for all!

this fixes the problem of 4.23 too (maybe it will fix 4.24, 4.25, 4.26 same problem, but I don’t check)
but you have to add #if PLATFORM_ANDROID around changes in SocketSubsystemAndroid.cpp file then it would works
I just changed the FSocketSubsystemAndroid::GetLocalHostAddr method and it helps me and fixed all problems with hosting and connecting to the existed game. All of these fixes also work in blueprints!!!

[MrSmith77]

Once you do this and your using the github build of the engine… it takes forever because it has everything…

Then all you to do for android network capability is ; enable the plugins, (project settings)- android and google play services… just enable it, (can fill out later when you start with the app store) Then add this to the DefaultEngine.ini

[OnlineSubsystem]
;DefaultPlatformService=Null
;DefaultPlatformService=GooglePlay

All this does is pretty much say you going to use that stuff… so if you want to use Steam for example, then you need to add the steam stuff… which is another DefaultPlatformService=Steam I think… then other stuff, so not so simple.

[OnlineSubsystem]
;DefaultPlatformService=Null
;DefaultPlatformService=Steam
;DefaultPlatformService=GooglePlay

Something like that maybe… not sure about the “Steam” setting… just an example.