GitHub Authentication

[tride258]

Hello. I got an error when trying to authenticate via github.
I added client id client secret
github.com in Authorized domains
callback url: https://demoexm-ec418.firebaseapp.com/__/auth/handler
and created access token

Here is my code:

var authProvider = new FirebaseAuthProvider(new Firebase.Auth.FirebaseConfig("api"));
//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
var auth = await authProvider.SignInWithOAuthAsync(FirebaseAuthType.Github, "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");
firebaseClientAuth = new Firebase.Database.FirebaseClient(
                  "https://demoexm-ec418-default-rtdb.firebaseio.com/",
                  new FirebaseOptions
                  {
                      AuthTokenAsyncFactory = () => Task.FromResult(auth.FirebaseToken)
                  });```

I get this in response:

```Firebase.Auth.FirebaseAuthException: Exception occured while authenticating.
Url: https://www.googleapis.com/identitytoolkit/v3/relyingparty/verifyAssertion?key={0}
Request Data: {"postBody":"access_token=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&providerId=github.com","requestUri":"http://localhost","returnSecureToken":true}
Response: {
  "error": {
    "code": 400,
    "message": "INVALID_IDP_RESPONSE : Unsuccessful check authorization response from Github: {\"message\":\"Not Found\",\"documentation_url\":\"https://docs.github.com/rest/reference/apps#check-a-token\"}",
    "errors": [
      {
        "message": "INVALID_IDP_RESPONSE : Unsuccessful check authorization response from Github: {\"message\":\"Not Found\",\"documentation_url\":\"https://docs.github.com/rest/reference/apps#check-a-token\"}",
        "domain": "global",
        "reason": "invalid"
      }
    ]
  }
}

Reason: Undefined ---> System.Net.Http.HttpRequestException: Код состояния ответа не указывает на успешное выполнение: 400 (Bad Request).
   в System.Net.Http.HttpResponseMessage.EnsureSuccessStatusCode()
   в Firebase.Auth.FirebaseAuthProvider.<ExecuteWithPostContentAsync>d__43.MoveNext()
   --- Конец трассировки внутреннего стека исключений ---
   в Firebase.Auth.FirebaseAuthProvider.<ExecuteWithPostContentAsync>d__43.MoveNext()
--- Конец трассировка стека из предыдущего расположения, где возникло исключение ---
   в System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   в System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   в Firebase.Auth.FirebaseAuthProvider.<SignInWithOAuthAsync>d__19.MoveNext()
--- Конец трассировка стека из предыдущего расположения, где возникло исключение ---
   в System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   в System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   в System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   в FireBaseCore.Core.<RegisterUserByGitHubAsync>d__8.MoveNext() в D:\FireBaseCore\FireBaseCore\Core.cs:строка 104
False
FireBaseCore.Post[]```

[tride258]

identitytoolkit googleapis is no longer supported and all authentication methods except mail + password do not work

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

Closing the issue due to inactivity. Feel free to re-open

[chadrockey]

May also be related to #227 but I see you have an access_token in the body which is further than Apple gets