Detect browser crash

[alexamirante]

Meta -

OS: Linux Ubuntu 14.04

Selenium Version: 3.0.1

Browser: Chrome

Browser Version: 54.0.2840.71

Expected Behavior -

I'm trying to get notified of browser crashes by periodically issuing a webDriver.getTitle(). I would expect it to throw a WebDriverException as soon as the browser is not reachable.

Actual Behavior -

A WebDriverException, is actually thrown when the browser is not reachable, but only after ~2 minutes (127 seconds). I guess some timeout fires at that point.

Is such timeout configurable somewhere? I tries the various WebDriver.Timeouts but had no effect.

Steps to reproduce -

Through the Java bindings:

    WebDriver webDriver = new ChromeDriver();
    webDriver.get("https://www.google.com");
    while(true) {
        try {
            webDriver.getTitle();
            Thread.sleep(1000);
        } catch(WebDriverException | InterruptedException e) {
            e.printStackTrace();
            break;
        }
    }

[barancev]

1. It depends on the driver, chromedriver namely, so you have to report the issue to their tracker.

2. I can't reproduce the issue, I've added some tracing:

    WebDriver webDriver = new ChromeDriver();
    webDriver.get("https://www.google.com");
    while(true) {
        try {
            System.out.println("peep " + System.currentTimeMillis());
            webDriver.getTitle();
            Thread.sleep(1000);
        } catch(WebDriverException | InterruptedException e) {
            System.out.println("crack! " + System.currentTimeMillis());
            e.printStackTrace();
            break;
        }
    }

and the output shows that the timeout is about 3 seconds:

Starting ChromeDriver 2.25.426923 (0390b88869384d6eb0d5d09729679f934aab9eed) on port 14357
Only local connections are allowed.
окт 29, 2016 8:48:16 PM org.openqa.selenium.remote.ProtocolHandshake createSession
INFO: Attempting bi-dialect session, assuming Postel's Law holds true on the remote end
окт 29, 2016 8:48:16 PM org.openqa.selenium.remote.ProtocolHandshake createSession
INFO: Detected dialect: OSS
peep 1477763297656
peep 1477763298662
peep 1477763299667
peep 1477763300672
peep 1477763301693
peep 1477763302698
peep 1477763303704
peep 1477763304709
crack! 1477763307740
org.openqa.selenium.WebDriverException: chrome not reachable
(Session info: chrome=54.0.2840.71)
(Driver info: chromedriver=2.25.426923 (0390b88869384d6eb0d5d09729679f934aab9eed),platform=Windows NT 6.1.7601 SP1 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 3.03 seconds
Build info: version: '3.0.0', revision: '350cf60', time: '2016-10-13 10:48:57 -0700'
System info: host: 'alexei-pc', ip: '169.254.47.71', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.8.0_91'
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities [{applicationCacheEnabled=false, rotatable=false, mobileEmulationEnabled=false, networkConnectionEnabled=false, chrome={chromedriverVersion=2.25.426923 (0390b88869384d6eb0d5d09729679f934aab9eed), userDataDir=C:\Users\alexei\AppData\Local\Temp\scoped_dir5396_3594}, takesHeapSnapshot=true, pageLoadStrategy=normal, databaseEnabled=false, handlesAlerts=true, hasTouchScreen=false, version=54.0.2840.71, platform=XP, browserConnectionEnabled=false, nativeEvents=true, acceptSslCerts=true, locationContextEnabled=true, webStorageEnabled=true, browserName=chrome, takesScreenshot=true, javascriptEnabled=true, cssSelectorsEnabled=true}]

[alexamirante]

Forgot to say that I tested it on Windows myself, and it doesn't happen. The 2 minutes delay only happens on Linux (at least on Ubuntu 14.04).

I'll report the issue to the chromedriver tracker, thanks.