[erlang-questions] What is the right way to update cowboy dispatch rules on-fly?

[Max Lapshin]

I mean, that after calling API cowboy:set_protocol_options, I have
large list of workers, that use old configuration and
user cannot go to new routes.

This is why I can't use "cowboy:set_protocol_options" at all and I
need to shutdown whole cowboy and start it back again.