CDP listener is not working in multi-thread environment

[MovingW]

I found one issue. The cdp listener is not working in multi-thread environment. I put the webdriver instance in message_lisnener() and run it with threading, but it turned out that the callback func of the listener is not called at all.

t1 = threading.Thread(target=message_listener) 
t1.start()

I put a print() function here but there's nothing printed.

def __add_cdp_listeners(self, webdriver):

 
 webdriver.add_cdp_listener( 
 "Network.requestWillBeSent", 
 lambda data: print(data) 
 )

[mdmintz]

Upgrade to 4.20.8. See the new options: #2220