Jc2k

https://github.com/chrysn/aiocoap/pull/294 will let us avoid re-transmits during a sleepy devices sleep interval. We'll probably want a `TransportTuning` per connection, and we should use the "Sleep Interval" characteristic value if its...

Will this look like the device is disconnected when an operation is in flight?

Sure I get what this fixes, I'm just trying to imagine what could happen between the send and receive - could we solve one bug and introduce some races. E.g....

It sounds like pairing worked once and then you reset the esp but not the home assistant integration. So the existing pairing in ha is trying to establish a connection,...

The pair verify code path only happens when there is a pairing. It loads secrets from a config entry, and there is no config entry until pairing has happened. It...

We know there are ~28k installs of this integration, and this is the first time I can remember this behaviour coming up, and you can recreate it in 2 distinct...

If it's still doing pair verify after removing the integration and stopping after a restart then it's pretty much confirmed. It's probably not been a problem before because most users...

No reporting it there would just ping the same people that you are speaking to here :) Just need to wait for someone to have time to look into it.

If it uses `udp6` on Linux anyway, then we should do that and force udp6.

This alone isn't enough, because (i think) `start()` won't call `self.call()` in this case.