to fix this bug i had to change the way a user can support a relay
address. the user can no longer provide the address in the form
"0.0.0.0:8000" instead he has to use "ws://0.0.0.0:8000" or
"wss://0.0.0.0:8000" the switch between ws/http or wss/https is handle
by the program
In order to be able to use a simple transfer name, the relay server and
the sender were adapted. On the sender, the on_create_room method was
adapted so that a call is made to the http_client to register the
transfer with the relay server. The handle_create_room method on the
server has been adapted so that when a room is created, the name is
transmitted by the receiver and is no longer generated on the
relayserver.This was also done in preparation for integrating a local
relayserver for the direct connection between sender and receiver.
