I can get a new token-based push worker (without the use of certificates) just fine with regular push notifications and using a simple node.js file for the backend.
But I can not get it to work with VoIP push. I tried using the token derived from PushKit - creditials.token, but I always get a 400 error.
I can not find information about this on the Internet. Just a mention of WWDC that token authentication can also be used for VoIP push.
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