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Please forgive my ignorance, but it talks a lot about peer-to-peer conversations - how would that work if the peers are behind NATs or Proxies?

That works with UDP hole punching (https://en.wikipedia.org/wiki/UDP_hole_punching), and there is a branch with uPNP (https://en.wikipedia.org/wiki/Universal_Plug_and_Play) support. We still need to review that code carefully before accepting it into master.

I'm reasonably sure it does a UDP hole punch to do it.

Probably leveraging STUN servers https://en.wikipedia.org/wiki/STUN

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