Marcel Märtens 5a48bffcb0 fix main thread blocking which was a bad combination of
- a channel was stale and wasn't shut down propertly AS WELL AS
 - the msg ingoing pipe was bounded, so it could fill up

To mitigate this we
 a) unbounded the pipe
 b) stoped spam the log in no channel case
 c) instead of ever reaching "no channel" state we actually shutdown participant
 d) when send_mgr is closed it will no longer be able to SEND on streams
2021-02-18 20:00:07 +01:00
..
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