Getting topics a app token in endpooint https://iid.googleapis.com/iid/info/{TOKEN}?details=true

[Rafael Piai Pimenta]

I currently use the endpoint https://iid.googleapis.com/iid/info/{TOKEN}?details=true,
to return topics related to the token.

In the header I send the Authorization - key=CHAVE

But this authentication was discontinued by Google, and now according to their documentation, we have to pass OAuth2.

I followed the example: https://firebase.google.com/docs/cloud-messaging/auth-server?hl=pt-br#provide-credentials-manually

and using GoogleCredentials I get the AccessToken and pass it in the request, as per the example:

URL url = new URL(BASE_URL + FCM_SEND_ENDPOINT);
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.setRequestProperty("Authorization", "Bearer " + getAccessToken());
httpURLConnection.setRequestProperty("Content-Type", "application/json; UTF-8");
return httpURLConnection;

But even after passing this new authentication, I'm getting the following error message:

error='Authentication using server key is deprecated. Please use an OAuth2 token instead.'

Is anyone able to use this endpoint?

Thanks,

Rafael

[Rafael Piai Pimenta]

In case anyone else has this problem.

The following header was missing: access_token_auth

And the SCOPE informed in GoogleCredentials should be this: https://www.googleapis.com/auth/firebase.messaging

Thanks