Using RestClient within a task?

[heath3n]

I'm using Firebase Auth to get an auth token; once I have it I need to set it as a header so I can make requests to my backend server. However because I'm putting RestClient within a task, I get the error Internal_CreateGameObject can only be called from the main thread.

_auth.CreateUserWithEmailAndPasswordAsync(email, password).ContinueWith(task => {
    if (!task.IsCompleted) return;

    FirebaseUser user = task.Result;
    user.TokenAsync(false).ContinueWith(tokenTask => {
        if (!tokenTask.IsCompleted) return;
        
        RestClient.DefaultRequestHeaders["Authorization"] = "Bearer " + tokenTask.Result;
        RestClient.Post("https://...."), null);
    });
});

What is the correct approach here?

[jdnichollsc]

Can you attach a repo to reproduce that issue?

[heath3n]

@jdnichollsc Added one here, sorry for the delay: https://github.com/heath3n/RestClientTaskErrorRepro.

There should be a scene Scenes/ExampleScene which contains a single GameObject with the InitializeClient script attached; just run the project in Unity (I'm using 2019.4) and observe you get the described error in the console.

I've since discovered Firebase has an extension method ContinueWithOnMainThread that solves my issue so I'd guess anyone using RestClient and not using Firebase would just need to write a similar method for their own tasks. That doesn't seem like the responsibility of this library though so I'll close this.

[jdnichollsc]

Thanks for let me know mate!