I m working on utility tool which should to test GWT-App I wanna use Chrome headless browser but that doesn t work

Question

Following is my code:

DesiredCapabilities cap = DesiredCapabilities.chrome();
    ChromeOptions options = new ChromeOptions();
    options.setExperimentalOption("useAutomationExtension", false);
    options.addArguments("--headless");
    cap.setCapability(ChromeOptions.CAPABILITY, options);

    driver = new RemoteWebDriver(new URL("http://localhost:4444/wd/hub/"), cap);

    wait = new WebDriverWait(driver, 10);

If I go to google.com using driver.get(url) & take a screenshot, I can see the Google Page, but as soon as I try to open the GWT app, i only get a white page and the following source printed with System.out.println(driver.getPageSource());

<html xmlns="http://www.w3.org/1999/xhtml"><head>
    <title>Secure Login Service</title>
</head>
<body>

But the monent I remove the headless flag, chrome starts and the GWT app loads normally

I'm running Chrome-Version 63.0.3239.84, selenium-server-standalone-3.5.3, chromedriver 2.33 & Windows 7 Enterprise 64bit.

I'm unable to update Chrome, but I can try different versions of selenium-driver and chromedriver (I tried other versions but they wouldn't run - but thats another topic) - Is there another good headless-Browser which needs no installation (i.e. awesomeHeadlessBrowser.jar?)

Any suggestion would be appreciated.

nsv999 · Answer 1 · Mar 30, 2018

Along with the --headless option, you should also pass --disable-gpu flag.
However, instead of passing these options explicitly, just call driver.set_headless() (which will take care of setting both for you).