Blank screenshots when using --headless and --proxy-server at the same time.

[lucasefe]

If I use chrome without the --headless option, everything works, which means traffic goes through the selected proxy, and when I capture the screens, the resulting images look the way I expect them to.

If I add --headless to the command line arguments, I start capturing blank screens.

I tried both Canary and Chromium.

Is there anything I can do figure out what's going on? I added logging to the proxy, and I see only one connection happening, instead of several, which is what I see when "it works".

Let me know if there's something I can do. Thanks in advance.

Related issue: https://github.com/cyrus-and/chrome-remote-interface/issues/175

(I opened this one because the related one was already closed)

[cyrus-and]

This is hardly a problem with this project, you should file and issue here.

Moreover, I cannot even start Chrome if I set both --headless and --proxy-server at the same time on Linux:

$ google-chrome --proxy-server=socks5://127.0.0.1:9050 --remote-debugging-port=9222 --headless
[0718/200052.562414:ERROR:headless_shell.cc(551)] Malformed proxy server url

[lucasefe]

I'm using a normal HTTP proxy, not a socks5.

And you are right, this is not a problem related to chrome-remote-interface.

Just to clarify, here's how to reproduce it:

I run a proxy server in port 4001, simply by executing this file with nodejs. Any other proxy would suffice as well.

Run chrome, headless, with proxy:

On Mac: /Applications/Google\ Chrome\ Canary.app/Contents/MacOS/Google\ Chrome\ Canary --headless --disable-gpu --remote-debugging-port=9222 --proxy-server=localhost:4001 https://www.chromestatus.com

On your normal chrome, browse localhost:9222, follow the steps, and you'll see the blank screen.

If you do the same without the --headless option, the screen will show the actual content of the browsed page.

As we can see, I did not use chrome-remote-interface, so it's not related to it.

Thanks, and sorry for the inconvenience.

[cyrus-and]

If you decide to file an issue upstream of if you find more info, feel free to post it here if you want, so to help future visitors. Thanks.

[nhoellinger]

Hi! Are there any new updates? Because I'm facing the same problem. I'm using the BrowserMobProxy. It would even be helpful to know if that is a bug or not...

[cyrus-and]

@nhoellinger I don't think an upstream issue has been filed, you can do that. You may also want to ask this in the Google Group.

[mitaltia]

I am also facing the same issue as @lucasefe posted here. @lucasefe Are you able to resolve the blank page issue with headless chrome? Thnkas!

[chandnarahul]

i am facing the same issue, as advised above i have raise it here : https://groups.google.com/forum/#!topic/chrome-debugging-protocol/VcF5Abm1IeE

[xyproto]

Not sure if it's related, but unset TZ before running headless chrome solved the issue with blank screenshots here. When TZ was set (correctly) to /usr/share/zoneinfo/Europe/Oslo, there were errors in the js console in chrome.

[anarang]

I am also facing the same issue with chromedriver, is there a resolution to it yet?

options = Options()
options.add_argument('--headless')
options.add_argument('--no-sandbox')
options.add_argument('--proxy-server=%s' % proxy_url)

 driver = webdriver.Chrome(ChromeDriverManager(path=os.environ['PYTHONPATH']).install(), chrome_options=options)

When I remove the --proxy-server, headless chrome works fine but otherwise it would show a blank screen. I am using this with Selnium python. I am trying to run the selenium tests inside fedora 32 docker container using selenium. $ google-chrome --version Google Chrome 84.0.4147.105

Any solution to this will be appreciated.

[0xhexdec]

For me, adding the --ignore-certificate-errors did the trick.

options = Options()
options.add_argument('headless')
options.add_argument('ignore-certificate-errors')
options.add_argument('--proxy-server=%s' % proxy_url)

driver = RemoteDriver(hubUrl, options=options)

Done with selenium python I run the tests in Selenium Grid (3) with Windows and Linux nodes.

hope this helps

[yotamgod]

@0xhexdec Saved me

[fortuneteller]

:tada: @0xhexdec

[eostis]

@0xhexdec Saved me too!

With phpunit selenium:

$capabilities = [ 'chromeOptions' => [ 'w3c' => false, ], ];

// Headless
$capabilities['chromeOptions']['args'] = [
  '--headless',
  '--ignore-certificate-errors', // prevents blank screenshots
];

$this->setDesiredCapabilities( $capabilities );