Unity Authentication with Game Center Minimum Setup?

[weak heath]

Hello,

I purchased this Essential Kit because implementing it with iOS native plugins has been challenging, especially since fetching items doesn't work as expected.

Could you please provide the minimum setup required to authenticate and fetch the signature, teamPlayerID, publicKeyUrl, salt, and timestamp using your plugin? I saw a response in the Unity forum that mentioned your plugin works for this issue, and I also received confirmation from your support email before purchasing.

Can I remove the Apple.Core and Apple.Gamekit packages that I previously installed after integrating this plugin?

Edit:
3. I found that I could retrieve the necessary values for Unity Authentication from ServerCredentials in your EssentialsKit. However, Unity's documentation advises fetching these values again before reusing them as they may become outdated (teamPlayerID, publicKeyUrl, salt, timestamp). I haven't found a way to refresh these values through your plugin.

Thank you.

[urban snow]

There is no refresh, afaik. Can you please pass on the doc reference.

Our plugin doesn't depend on any external code or dependencies (except fot EDMU as we need to for cross plugin compat). You can safely delete apple plugins as well as GPGS from github for android if you have added.
@weak heath

[weak heath]

I've implemented everything else on my own. My sole purpose was to authenticate Unity with Game Center. I managed to do this with a fix found in a Unity discussion, but it would be great to have documentation for a minimum setup specifically for this purpose. It seems like many people are struggling with it, and there's no straightforward solution. If your plugin offers a simple, straightforward setup for this, I would consider switching to it.

[urban snow]

Thankyou!
Sure! I will make a separate document on how to use this for this specific case. Glad for sharing the steps to make it simple. Really appreciate it.

[weak heath]

I followed the authentication thread where you were posting files back and forth. However, I'm encountering a problem: the server credentials always return a null reference exception. I was able to get it running with a forked plugin, but I wanted to give your asset another try because with the Unity plugin fork, I always have to move my project to my Mac to build it for xcode.

[urban snow]

I'm working on a demo currently. Will get you the tutorial by tomorrow.

[weak heath]

Okay, thank you. I've been struggling with it for 3 days. The fork from GitHub does work, but the only problem is that I have to transfer the whole project to my Mac when I want to build for iOS to make it work.

I wouldn't need an entire document, though.

[urban snow]

Sure. Let me give a brief here so you can continue meanwhile

[weak heath]

That would be great thank you.

[urban snow]

1. Import namespace

using VoxelBusters.CoreLibrary;
using VoxelBusters.EssentialKit;

2. Call GameServices.Authenticate which will fire GameServices.OnAuthStatusChange event on completion of authentication with a status
3. If authentication status is successful, call GameServices.LoadServerCredentials

GameServices.LoadServerCredentials((result, error) =>
                    {
                        if(error == null)
                        {
                            LogServerCredentials(result.ServerCredentials);
                        }
                        else
                        {
                            Log("Loading server credentials failed with error. Error: " + error);
                        }
                    });

4. LoadServerCredentials returns ServerCredentials object which has IosProperties

if(credentials.IosProperties != null)
            {
                Log("Public key Url : " + credentials.IosProperties.PublicKeyUrl);
                Log("Signature length : " + credentials.IosProperties.Signature.Length);
                Log("Salt length : " + credentials.IosProperties.Salt.Length);
                Log("Timestamp : " + credentials.IosProperties.Timestamp);
            }

[weak heath]

done all that already

the result return always null reference exception when i call an iOS property

ive put a few more debugs in there to test

[weak heath]

I tried it with the two modified files you posted in the other thread (replacing them as you mentioned to keep the meta files), but it still doesn't work. I also tested the original plugin without the modified files, and that didn't work either.

In the editor settings, I disabled everything except GameServices and entered the iOS Store ID (a 10-digit number) under the General tab.

[urban snow]

May I know the message links to see what you updated? I think 2.7.3 has all the required fixes.

[weak heath]

#1261113580099473451 message

#1261113580099473451 message

[weak heath]

I tested with and without them.

Normally i always find a way to test anything else and get to the point it just works but iam totally stuck now i dont know what else to test. LoadServerCredentials callback never returns a valid value

[urban snow]

Ok, as per the log I see you have INVALID_PARAMETERS once you pass the credentials details to your server?

[weak heath]

Yes because iam passing null parameters to the unity authentication sign in function as soon as i debug.log any result value from the callback it prints me error logs.

async Task SignInWithAppleGameCenterAsync(string signature, string teamPlayerId, string publicKeyURL, string salt, ulong timestamp)

[urban snow]

Oh ok, got it.

Can you please do one thing? You can just use 2.7.3 for this. No patches are required. The one you found on discord are for 2.7.2 release.

1. Open GameServicesDemo scene and build for ios
2. Run it and click on Authenticate
3. Scroll down and click on LoadServerCredentials

[weak heath]

ok let me check real quick

Will this even work without it published to the store?

[urban snow]

Yes.

[weak heath]

entering store id is not necessary?

[urban snow]

Not required

[weak heath]

kk

[urban snow]

Store Id, we collect for Rate app - in case if dev prefers to open store link instead of default native rate dialog. As its something global, its in general section. You can ignore it.

[weak heath]

Building should be done in 2-3 minutes

[urban snow]

No problem. I will be around.

[weak heath]

Hmm looks good actually

Getting the right responses

Ill check out the implementation

[urban snow]

One thing I see different is - Async implementation.
Thought to support Async but thats too much work and delays V3 further, so may take it up later.

[weak heath]

No problem ill find a way if it works in the demo. I didnt knew you had that implemented already. Because i only saw about 2-3 people asking about that in discord

[urban snow]

But thats something in my list. Actually got some inspiration from PrimeTween (https://github.com/KyryloKuzyk/PrimeTween). The dev made it really nice by adding both async and non-async nicely.

[urban snow]

Yes, it was for 2.7.2 and later we released 2.7.3 with the changes.
In-fact we were using old methods for fetchItems earlier but had to backport from v3 to make it compatible with v2 in 2.7.3... so...

Anyways, As soon as you need any help, please ping here. I will reply at the earliest possible (+5.30 GMT timezone - India)

[weak heath]

Thank you for you time i ll let you know if i got it to work.

[urban snow]

GameServicesDemo can be good reference to cross check anything and will be handy.

[weak heath]

It was definitely the async method causing the issue. It seems like AdMob callbacks requires it to be run on the main thread. I’m going to throw out all my async code now, i’m sure it will work after this adjustment. Thank you.

[urban snow]

Fyi, We dispatch all callbacks on main thread.

[weak heath]

I experienced the same issue with AdMob. Even though all callbacks were forced to be on the main thread, they still weren’t. I added PimDeWitte.UnityMainThreadDispatcher to double-force the callbacks, and as a result, the reported crashes in the Play Console dropped from 5% to 0.1%.

[weak heath]

Funny thing if I enforce just the callback to run on the main thread, my entire implementation immediately works. No other changes, just forcing the callback to be on the main thread. It's exactly the same Unity bug with AdMob. 😂

It just works out of the box with my async methods.

[urban snow]

Oh 😄

[weak heath]

I replaced everything from.my Google implementation and used your implementation, but the only annoying issue I encountered is that it doesn't follow the usual flow when using Google Play Games directly. The player has to accept the login, whereas typically, the Google popup appears without requiring any user action.

Could this be because you're only using the client ID and not the client secret?

[urban snow]

No. I think GPGS on Github is on Play Services V2 and we are using Play Services in V1.
However, In V3, we have upgraded with play services v2, which is currently in Beta.

[weak heath]

Is it possible to get beta ?

[urban snow]

Yes, ofcourse!

Can I arrange you by tomorrow?

We have a new beta release in couple of days.

[weak heath]

Sure thank you.

[weak heath]

Another thing i just realized your implementation is wrong for the android logic when getting a second time server credentials. Google requires to aquire a new auth token after every use your function LoadServerCredentials returns for the second time called the same ServerAuthCode like on the first call.

[urban snow]

V3 provides option to fetch auth code along with refresh token

[weak heath]

Ah, okay, cool. I'll just wait for it then. I tried to make the changes myself in your code, but it seems like the functions are intentionally obfuscated, making it difficult to track down. 🙂

[urban snow]

Which functions?

[weak heath]

for example:

protected void _Call(string methodName, params object[] args)
{
    IntPtr methodID = AndroidJNIHelper.GetMethodID(m_jclass, methodName, args, isStatic: false);
    _Call(methodID, args);
}

[urban snow]

Well thats from unity dll

[weak heath]

Any chance ill be able today to get the beta? 🙂

[urban snow]

I mean androidjnihelper

I need to cross check few things before I pass on the beta , so...

If you want I can send it over. Meanwhile you can check it. But will send another one in 2 days if any fixes required.

If thats ok, i can send it right now.

[weak heath]

Yea sure

i wont publish it live to my game its just that i can continue working and testing

[urban snow]

Ok then. Pls give me an hour to send it over.