By default, when a websocket handler passes
it writes an Http Forbidden response
to the channel in DefaultPassHandler.
By default, when a websocket handler passes
it writes an Http Forbidden response
to the channel in DefaultPassHandler. To override this behavior, call this method
with a function to handle the ChannelEvent with custom behavior
A Plan configured to handle Throwables by printing them before closing the channel
(Since version 0.6.8) Use Planify.apply or extend Plan