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 the proxy with authentication, so that when program visits any website, it will visit through the proxy server.

There are some similar questions on SO. But, there is no specific solution for Selenium Firefox WebDriver of Python.

• Python Selenium Webdriver - Proxy Authentication
• Running selenium behind a proxy server

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)

Answer 2

There is an example for Firefox + Python but without the authentication here. Then you can find other available parameters here in source code. So it looks like you need the following:

socksUsername
socksPassword

For example:

from selenium import webdriver
from selenium.webdriver.common.proxy import *

myProxy = "host:8080"

proxy = Proxy({
    'proxyType': ProxyType.MANUAL,
    'httpProxy': myProxy, # set this value as desired
    'ftpProxy': myProxy,  # set this value as desired
    'sslProxy': myProxy,  # set this value as desired
    'noProxy': ''         # set this value as desired
    'socksUsername': = ''
    'socksPassword': = ''
    })

driver = webdriver.Firefox(proxy=proxy)

or with preferences:

driverPref = webdriver.FirefoxProfile()
driverPref.set_preference("network.proxy.type", 1)
.
.
.
driverPref.set_preference('network.proxy.socks', proxyHost)
driverPref.set_preference('network.proxy.socks_port', proxyPort)
driverPref.update_preferences()

driver = webdriver.Firefox(firefox_profile=driverPref)

EDIT:

I looked at it again and it seems that it is impossible to set authentication details in FF, even manually. The only way is just to remember the details that you have already entered which done by 2 parameters:

signon.autologin.proxy=true
network.websocket.enabled=false

that can be configured with the set_preference() method. You can also manually view all FF options by browsing to about:config.

Answer 3

In an addition to the answer with extension.

You can also use form filling to dynamically change credentials on your proxy. Just load the extension page, fill the form automatically and click save!