INADA Naoki added the comment:
I can't reproduce it because of some reason.
1. While you report it affects Python 3.3~3.7, the script doesn't work on
Python 3.7
2. I've fixed webserver.py to work on Python 3, but it uses very old (draft)
websocket protocol. Current browser doesn't send header
New submission from Dhiraj:
When Python Server receives a string of '/xff' (5 or more) from a page after
completing a handshake, the tab immediately crashes. There are variations of
this string with other characters mixed in that also cause an immediate close
of python server.
To reproduce: