Switch to QUIC-NAT-Traversal instead of DISCO #3595
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I don't want to remove the metrics plumbing, but it is currently unused. So emit a single metric for now. Need to do a proper metrics review later, we need more metrics than this.
Turns out we don't do anything with those. We only use this to decide to check if we need to holepunch again. This calls trigger_holepunching for every connection event which will wake it up too much, because we only really need to do it for the connection we are using to holepunch. But the state tracking is easier like this and the cost probably not too high.
it's something, if not much
not sure how bad or good this is yet, but it compiles
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Description
This switches from the old DISCO to the so-new-it-doesnt-exit-yet QUIC
NAT Traversal.
Breaking Changes
Nothing visible? Maybe?
Notes & open questions
The QUIC NAT Traversal API doesn't exist yet, so this won't even build
on any machine that's not mine. I've locally patched in the dummy
methods that I use.
Change checklist
quic-rpciroh-gossipiroh-blobsdumbpipesendme