Not possible to embed player in Extension (despite CSP)

[someuser]

Hey there,

Hope you can help me out. I want to embed an Twitch Player (Live) for my extension (without iframe, but with object).

My first review gave me some hint:

Please ensure your extension is adhering to our Content Security Policies listed here: Life Cycle Management | Twitch Developers

Due to Announcements and Life Cycle Management I had an issue with embed Twitch Player as an extension (its not an iframe!). In the Content Security Policy (CSP) paragraph exists an part of:

(…)
frame-ancestors https://supervisor.ext-twitch.tv https://extension-files.twitch.tv **https://`.twitch.tv** https://.twitch.tech https://localhost.twitch.tv: https://localhost.twitch.tech: http://localhost.rig.twitch.tv:*`;
(…)

So I expected to embed a Twitch Player as video overlay like this, because “object” is also an frame-ancestors:
<object data="https://player.twitch.tv/?channel=bytethinks&parent=twitch.tv"></object>

It works fine in the Twitch Developer Rig, so I comit this to review. At the review test streaming page from Twitch, the code does not work – against my expectations I got an error:

Refused to load Twitch because it appears in neither the object-src directive nor the default-src directive of the Content Security Policy.

What I’m doing wrong? Or better: How can I make this work?

Thanks! !

[Dist]

Extensions Guidelines & Policies

2.2 Extensions may not use iframes.

You can’t use embeds in an extension.

@someuser

It works fine in the Twitch Developer Rig, so I comit this to review. At the review test streaming page from Twitch, the code does not work – against my expectations I got an error:

The dev rig doesn’t simulate all of the restrictions that are enforced on Twitch. You should always test on Twitch itself before submitting to review. In this case, embedding a Twitch Player will not work within an extension.