How to start a coroutine from a Javascript call to a WebGL build

Target Platforms Web
1

I have a player login sequence that uses coroutines, because it uses some calls to a server that perform sequentially.

It works fine when I log in via a login window in Unity. But now I want to modify it so that it logs in automatically using a token passed from the web page. I start this with a Javascript call. But if I call the login coroutine from the method that I call from Javascript, I get this message:

SystemException: Thread creation failed.

I thought that I could, instead of calling the coroutine directly, set a static bool with the Javascript call, and then when the Monobehavior instantiates, check for the static bool in an update, and if it’s set, call the coroutine. But I get the same error message as above using this method as well.

Does anyone have any ideas here? I can post code samples if needed.

2

Are you creating a Thread or a Coroutine? the exception suggests you are creating a Thread, which is something we don’t support at the moment.

3

I am calling a coroutine like this:

StartCoroutine(SignInFromWeb());

And it looks like this:

public IEnumerator SignInFromWeb()
{
    yield return StartGetPlayer("current");

    if (OnlineManager.Instance.PlayerReponseData.player.gamemaster)
    {
        GameManager.Clien t= false;
        SceneManager.LoadScene("Moderator");
    }

    if (!OnlineManager.Instance.GetRequestFailure)
    {
        if(OnlineManager.Instance.PlayerID==null||OnlineManager.Instance.PlayerReponseData.status!="ok")
        {
            LoadingAlert.FinishLoading();
            HTTPAlert.Present("LoginError",OnlineManager.Instance.Error,null,null,true);
        }
        else
        {
            yield return StartCoroutine(OnlineManager.Instance.StartGetGame());
            yield return StartCoroutine(OnlineManager.Instance.StartGetGear());
            Database.Instance.BuildAllData();
            Database.Instance.BuildGearList();
            PathManager.Instance.Initialize();

           if(!Avatar.Instance.Embodied)
           {
               UIViewController.ActivateUIView(AvatarCreationView.Load());
               UIViewController.ActivateUIView(AvatarStatsView.Load());
           }

        LoadingAlert.FinishLoading();
        }
    }
}
4

The confusing part for me is that I get the same error in the Javascript console when I try to call the coroutine from Update using the following code:

void Update()
{
    if (_remoteLogin)
    {
        _webCounter++;
        if (_webCounter > 3)
        {
            _remoteLogin = false;
            StartCoroutine(SignInFromWeb());
            enabled = false;
        }
    }
}