1386727 - Crash during creation of firefox headless browser

Status: RESOLVED WONTFIX

(Firefox :: Headless, defect)

Description

[Jagan]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:55.0) Gecko/20100101 Firefox/55.0
Build ID: 20170731163142

Steps to reproduce:

Start firefox 55.0 with --headless flag


Actual results:

With no active session:
> *** You are running in headless mode.
> (firefox:27959): Gdk-CRITICAL **: gdk_x11_display_get_xdisplay: assertion 'GDK_IS_DISPLAY (display)' failed
> ExceptionHandler::GenerateDump cloned child 28004
> ExceptionHandler::SendContinueSignalToChild sent continue signal to child
> ExceptionHandler::WaitForContinueSignal waiting for continue signal...
> exit 11

With another window running:
> *** You are running in headless mode.
> Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system.


Expected results:

Headless session should be started.

Comment 1

[Brendan Dahl [:bdahl]]

It looks like you already have Firefox open and headless is trying to connect to that instance. To use another session, use the command line switches: --profile <some profile dir>  --no-remote.  <some profile dir> can be an empty folder.  FWIW, we are discussing making --headless always default to a new empty profile.

Comment 2

[Brendan Dahl [:bdahl]]

I missed on the part "With no active session," however, try using an empty profile like I mentioned above for this as well.

Comment 3

[Jagan]

I tried it with "firefox --headless --profile /tmp/headless --no-remote". The console just says:
> *** You are running in headless mode.
and no errors are printed.

Comment 4

[Brendan Dahl [:bdahl]]

(In reply to Jagan from comment #3)
> I tried it with "firefox --headless --profile /tmp/headless --no-remote".
> The console just says:
> > *** You are running in headless mode.
> and no errors are printed.

That's the expected behavior. You then need to use something like marionettte to control the browser.

Comment 5

[Brendan Dahl [:bdahl]]

Closing in favor of bug 1401024.