Annoying popup "accept incoming network connections" when using python and macosx.

[nikoltat]

🐛 Bug Report

When starting a driver (chrome or firefox, it doesn't matter), macosx firewall may issue a dialog asking
for a permission for incoming connections. The culprit is free_port() in common.service.utils
free_socket.bind(('0.0.0.0', 0)) should be either
free_socket.bind(('127.0.0.1', 0))
or
free_socket.bind(('localhost', 0))
Note that the obtained free port is used afterwards
with localhost, the ideal option should be free_socket.bind(('localhost', 0))

The dialogue closes itself almost immediately so a user has no chance to allow for 0.0.0.0 bindings.
One can go around the issue by assigning the port itself.

To Reproduce

One needs to make sure that we haven't given a permission to a firewall to allow to python bind to 0.0.0.0.

Then a simple python script will trigger the dialogue

from selenium import webdriver
driver = webdriver.Chrome(options=options)

Expected behavior

You should not use 0.0.0.0 when binding.

Environment

OSX, latest chromedriver (but it doesn't matter since this is triggered in common.utils), latest selenium

[fschwahn]

I have the same problem when using the ruby driver in macOS. I searched the code for 0.0.0.0, and found:

selenium/rb/lib/selenium/webdriver/common/platform.rb

Lines 219 to 224 in 0065abd

	def interfaces
	interfaces = Socket.getaddrinfo('localhost', 8080).map { |e| e[3] }
	interfaces += ['0.0.0.0', Platform.ip]
	interfaces.compact.uniq
	end

I replaced 0.0.0.0 with 127.0.0.1 locally, and it makes the popup go away.