[bug]: htcinterceptor stops reading from lnds interceptor stream locking the htlcswitch in lnd from further accepting or resolving htlcs

[ziggie1984]

Raising this issue as a reference to lightningnetwork/lnd#8318. I have not yet analysed the Circuitbreaker part yet, but the logs in lnd might reveal that the problem has its origin in the circuitbreaker maybe ? Seems like the CB stops reading from the LND Interceptor Stream.

Will provide logs as soon as some of them are available.

[carlaKC]

CB should always cancel its context on exit (via ErrGroup) which I'd expect to clean up the grpc connection correctly. There's one case where we'd error out without context cancellation - opened #104 to address this - but I doubt that's the cause of the issue because people reporting this wouldn't even be able to start CB up properly.

Open to suggestions of other things that can be done on this end, but I haven't been able to reproduce this yet. Possibly no longer an issue now that LND has keepalive.