After hours of research I am still not able to use a proxy with authentification (username, password) in selenium using chrome WebDriver.

Here is what I tried:

  • using a chrome extension -> not working in headless mode

  • using AutoIT -> technically it's working, but for my usecase not good enough

  • using chrome options arguments like below, doesn't work:

    chromeOptions.addArguments("--proxy-server=http://" + username + ":" + password + "@" + proxyAndPort);

  • fill chrome authentification form with Selenium OOTB functionality: doesn't work because its an OS alert (thats why AutoIT can fill it)

Are there any other possibilities to connect with a proxy with authentification?

EDIT: After using browsermobproxy, I'm facing the issue that chrome shows me the error "ERR_EMPTY_RESPONSE". Here's my implementation:

    BrowserMobProxyServer proxy = new BrowserMobProxyServer();
    proxy.setChainedProxy(new InetSocketAddress(myIp, myPort));
    proxy.chainedProxyAuthorization(username, password, AuthType.BASIC);
    WebDriver driver = new ChromeDriver(chromeOptions);

EDIT2: Use browsermob-proxy version 2.1.5 - everything works fine

  • Do you mean you need to authenticate on proxy or you need to use proxy to authenticate on target site?
    – Alexey R.
    Jul 11, 2020 at 18:23
  • To use the proxy I need to enter a username and password.
    – D. Jung
    Jul 11, 2020 at 18:28

2 Answers 2


You need to set Proxy-Authorization header to the request which are coming from your web browser. I would use browsermob-proxy for handling this.

Here you can find some example of how to use the proxy with your Selenium test. You need to amend the code from "Create test fish-bone" section so that you have the following setUpProxy() method:

public void setUpProxy(){
    proxy = new BrowserMobProxyServer();
    proxy.setChainedProxy(new InetSocketAddress("YOUR_PROXY_HOST", 1234));
    proxy.chainedProxyAuthorization("USER_NAME", "PASSWORD", AuthType.BASIC);
  • Change new InetSocketAddress("YOUR_PROXY_HOST", 1234) to your proxy host and port
  • Change "USER_NAME", "PASSWORD" to your credentials

The idea is that you configure your selenium to use the proxy which is started by your test code. That proxy in turn is to be configured to use the upstream proxy that you normally use in manual mode.

P.S. - Use browsermob-proxy version 2.1.5

  • thanks for your answer. After implementing your suggestion, I'm facing the problem that Chrome shows me ERR_EMPTY_RESPONSE. I edited my question with the exact code I use at the moment.
    – D. Jung
    Jul 11, 2020 at 21:06
  • 1
    Solved using browsermob-proxy version 2.1.5
    – D. Jung
    Jul 11, 2020 at 21:45
  • Oh, I tried with your suggestion (In EDIT). But I can't connect to internet. What's the problem???
    – Du Tran
    Oct 14, 2020 at 17:08
  • There might be many problems here. How do you normally connect to the Internet? Is there any other proxy that you normally use?
    – Alexey R.
    Oct 15, 2020 at 11:34

I tested by hand with Firefox and my proxy is OK. This is my code.

    BrowserMobProxyServer proxyServer = new BrowserMobProxyServer();
    proxyServer.setChainedProxy(new InetSocketAddress(proxyHost, proxyPort));
    proxyServer.chainedProxyAuthorization(username, password, AuthType.BASIC);

    ChromeOptions ops = new ChromeOptions();

    System.setProperty("webdriver.chrome.driver", chromePath);

    WebDriver driver = new ChromeDriver(ops);

My code not working. I don't know what's the problem I met?

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