How to set proxy authentication (user & password) using Python + Selenium

Question

I am using Firefox WebDriver in Python 2.7 with Selenium. My python program starts Firefox browser and visits different websites when I run the program. But, I need to set t

Answer 1

In addition to running Firefox with a profile which has the credentials saved. You can do it loading an extension that writes in the loginTextbox and password1Textbox of chrome://global/content/commonDialog.xul (the alert window).

There are already some extensions that will do the job. For instance: Close Proxy Authentication

https://addons.mozilla.org/firefox/downloads/latest/close-proxy-authentication/addon-427702-latest.xpi

from selenium import webdriver
from base64 import b64encode

proxy = {'host': HOST, 'port': PORT, 'usr': USER, 'pwd': PASSWD}

fp = webdriver.FirefoxProfile()

fp.add_extension('closeproxy.xpi')
fp.set_preference('network.proxy.type', 1)
fp.set_preference('network.proxy.http', proxy['host'])
fp.set_preference('network.proxy.http_port', int(proxy['port']))
# ... ssl, socks, ftp ...
fp.set_preference('network.proxy.no_proxies_on', 'localhost, 127.0.0.1')

credentials = '{usr}:{pwd}'.format(**proxy)
credentials = b64encode(credentials.encode('ascii')).decode('utf-8')
fp.set_preference('extensions.closeproxyauth.authtoken', credentials)

driver = webdriver.Firefox(fp)