title: VoIP push with new token-based auth?
body: <p>I'm able to get the new token-based push working (without using certificates) just fine with normal push notifications and using a simple node.js file for the backend. </p>
  
  <p>But, I can't get it to work with VoIP push. I've tried just using the token derived from PushKit - creditials.token but I always get a 400 error. </p>
  
  <p>I can't seem to find any info on this online. Just the mention from WWDC that token-based auth could also be used for VoIP push. </p>