Problem pre-downloading and caching Addressables

Unity Engine
, , ,
1

Hey all! I have a bad problem with Addressables. I really can’t understand how to pre-download and cache bundles in my game, at startup. I have a loading screen before the game begins where i check for catalog updates and download bundles. It just does not work, I don’t know why.

I’ve already built and uploaded the output of the Default Build Script on my server and checked if it can serve them correctly, from browser I can download them, so it should work. The remote load path is set correctly. Am I missing something?
I’m using Unity 6.000.0.23f1 and Addressables 2.2.2.

This is the method I use to download bundles:

private IEnumerator DownloadAssetBundles()
{
    // 1. check if there's any catalog to update
    var checkHandle = Addressables.CheckForCatalogUpdates();
    yield return checkHandle;

    if (!checkHandle.IsValid())
    {
        Debug.LogError("Invalid handle from CheckForCatalogUpdates");
        yield break;
    }

    if (checkHandle.Status == AsyncOperationStatus.Succeeded && checkHandle.Result.Count > 0)
    {
        Debug.Log("Updates available, continue with download");

        // 2. update catalogs to download bundles to update
        var updateHandle = Addressables.UpdateCatalogs(checkHandle.Result);
        yield return updateHandle;

        if (updateHandle.Status == AsyncOperationStatus.Succeeded)
        {
            Debug.Log("Catalogues updated");

            var downloadHandle = Addressables.DownloadDependenciesAsync(checkHandle.Result);
            yield return downloadHandle;

            Debug.Log("Starting download");

            while (!downloadHandle.IsDone)
            {
                _assetBundlesLoadingBar.fillAmount = downloadHandle.PercentComplete;
                _assetBundlesLoadingText.text = (int)(downloadHandle.PercentComplete * 100) + "%";

                yield return null;
            }

            if (downloadHandle.Status == AsyncOperationStatus.Succeeded)
            {
                Debug.Log("Download completed");
            }
            else
            {
                Debug.LogError("Error during download");
            }

            Addressables.Release(downloadHandle);
            Addressables.Release(updateHandle);
        }
        else
        {
            Addressables.Release(updateHandle);
            Debug.LogError("Error during catalogues update");
        }
    }
    else
    {
        Addressables.Release(checkHandle);
        Debug.Log("No updates available");

        _assetBundlesLoadingBar.fillAmount = 1;
        _assetBundlesLoadingText.text = "100%";
        _updateEndCallback(true);
    }

    Addressables.Release(checkHandle);

    _assetBundlesLoadingBar.fillAmount = 1;
    _assetBundlesLoadingText.text = "100%";

    _updateEndCallback(true);
}

Thanks in advance for help, if you need screenshots or something else I’ll upload anything needed.
The error I’m receiving is Invalid checkHandle.

2

BUMP!
I discovered that using LoadContentCatalogAsync from the URL that I set in remoteLoadPath it works, so the problem is not in my server. Please I need an answer because it looks like a bug.

The code I use now to load catalog manually:

IEnumerator LoadCatalogManually()
{
    var catalogPath = "https://my_server_path/media/catalog_1.3.0.json";
    Debug.Log("Attempting to load catalog from: " + catalogPath);

    var handle = Addressables.LoadContentCatalogAsync(catalogPath);
    yield return handle;

    if (handle.Status == AsyncOperationStatus.Succeeded)
    {
        Debug.Log("Catalog loaded successfully from: " + catalogPath);
    }
    else
    {
        Debug.LogError("Failed to load catalog: " + handle.OperationException);
    }

    Addressables.Release(handle);
}

Also I see that the remoteLoadPath is not being read correctly, as a string or as a variable in profile management of addressables.

3

I have the same problem.