Do not monitor writable events for ws server #2646
Merged
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Context
As topic, otherwise we are trapped in an endless loop of writable readiness, which causes 100% cpu.
So IMO we shouldn't monitor the writable event as there's no case that server proactively writes something after the handshake (and even if there is we don't want to handle it)
This PR adds the
deregister
call too.This PR might fix the multi-worker CI failure - or at least a remedy for it.