Setting chromedriver proxy auth with Selenium using Python

Question

I am coding a test suite using Python and the Selenium library. Using the chromedriver, I am setting proxies using:

chrome_options = webdriver.ChromeOptions() chrome_options.add_argument('--proxy-server=%s' % hostname + ":" + port) global driver driver = webdriver.Chrome(chrome_options=chrome_options)

This works fine when the proxy does not have authentication. However, if the proxy requires you to login with a username and password it will not work. What is the correct and proper way to pass proxy authentication information to the chromedriver using add_argument or other methods?

It is not the same as: How to set Proxy setting for Chrome in Selenium Java

Seeing as:

I ts a different language
Its firefox, not chrome.
--proxy-server=http://user:[email protected]:8080 does not work.

@KirilS. Based on what was said in that topic I'll need some sort of extension in chrome to accomplish this? — Jorge, CommentedJun 12, 2016 at 15:16
the main thing it says is that unlike Firefox, Chrome uses OS proxy (not its own), so your options are 1 - settings the OS with proper proxy settings before test (good workaround for Windows where you can just setup a special user for selenium testing); 2 - setting OS proxy settings from the test (might be too complicated); 3 - using a special add-on that would allow you to change proxy settings on the fly. — timbre timbre, CommentedJun 12, 2016 at 15:20
@KirilS. On unix systems, I am getting: Message: unknown error: cannot process extension #1 from unknown error: invalid public key length — Jorge, CommentedJun 12, 2016 at 15:35
any update on this? this is killing me. Can it be done in Chrome? — Toolkit, CommentedMar 4, 2017 at 18:42

Pedro Lobito · Accepted Answer · 2019-04-22 23:40:37Z

Use DesiredCapabilities. I have been successfully using proxy authentication with the following:

from selenium import webdriver from selenium.webdriver.common.desired_capabilities import DesiredCapabilities proxy = {'address': '123.123.123.123:2345', 'username': 'johnsmith123', 'password': 'iliketurtles'} capabilities = dict(DesiredCapabilities.CHROME) capabilities['proxy'] = {'proxyType': 'MANUAL', 'httpProxy': proxy['address'], 'ftpProxy': proxy['address'], 'sslProxy': proxy['address'], 'noProxy': '', 'class': "org.openqa.selenium.Proxy", 'autodetect': False} capabilities['proxy']['socksUsername'] = proxy['username'] capabilities['proxy']['socksPassword'] = proxy['password'] driver = webdriver.Chrome(executable_path=[path to your chromedriver], desired_capabilities=capabilities)

EDIT: it unfortunately seems this method no longer works since one of the updated to either Selenium or Chrome since this post. as of now, i do not know another solution, but i will experiment and update this if i find anything out.

it didn't work for me, I had to use a dynamically generated extension. I will try again in a while. I am using Selenium .NET, may be that is the reason — Toolkit, CommentedMar 7, 2017 at 11:07
there is a typo 5 th line username is written as usernmae — Stack, CommentedJun 25, 2017 at 10:01
This method does'nt work with chromedriver and proxy requiring authentication. — Stack, CommentedJun 25, 2017 at 10:03
@anshaj unfortunatley not, and there probably wont be as the code has changed and likely wont be reverted. however, there is a work around by building a chrome extension through code. here is a link with details on how. look at the second section that is titled "HTTP Proxy Authentication with Chromedriver in Selenium" — crookedleaf, CommentedAug 9, 2018 at 16:58

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