PyCharm unable to connect to GhostDriver

Question

I have a unit test that is passing when I run it via python manage.py test, but failing when I run it from within PyCharm.

def test_alpha(self):
    from selenium.webdriver.common.utils import free_port
    from selenium import webdriver

    driver = webdriver.PhantomJS(executable_path=PHANTOMJS_PATH, port=free_port())
    driver.quit()

The exception I get when running from PyCharm is

WebDriverException: Message: 'Can not connect to GhostDriver'

I've spent a fair amount of time digging into this problem, and I've noticed that when I specify a port manually the test passes within PyCharm.

# suppose 50000 happens to be a free port on your computer
driver = webdriver.PhantomJS(executable_path=PHANTOMJS_PATH, port=50000)

To quickly recap:

Test passes with python manage.py test
Test passes in PyCharm if port is specified manually
Test fails in PyCharm if port=free_port()

What is PyCharm doing that is making the test unable to connect to Ghostdriver?

# For convenience, the `free_port()` code snippet is here
# selenium.webdriver.common.utils.freeport

def free_port():
    free_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    free_socket.bind(('127.0.0.1', 0))
    free_socket.listen(5)
    port = free_socket.getsockname()[1]
    free_socket.close()
    return port

What does `free_port()` return in PyCharm? What OS do you use? — CrazyCoder, Jul 24 '13 at 13:05
I use OS X - and free_port() usually returns a port between 50000-60000. — Derek Kwok, Jul 24 '13 at 14:25
Does it help if you start PyCharm from the Terminal: `open -a /Applications/PyCharm.app/`? — CrazyCoder, Jul 24 '13 at 14:28
@CrazyCoder YES IT DOES! The test passes when I open PyCharm from the terminal. Thank you! — Derek Kwok, Jul 24 '13 at 14:30
See http://stackoverflow.com/q/135688/104891. Something in your terminal environment affects the networking. — CrazyCoder, Jul 24 '13 at 14:32

score 1 · Answer 1 · answered Sep 03 '19 at 11:10

1

Something in your terminal setup probably influences the networking.

Try to start PyCharm from your terminal:

open -a /Applications/PyCharm.app/

Then run the test again, and it should pass.

Source: sum-up of @CrazyCoder's comments

answered Sep 03 '19 at 11:10

martin-martin

3,274
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score 0 · Answer 2 · answered Apr 01 '15 at 21:18

0

Try installing phantomjs with npm: https://www.npmjs.com/package/phantomjs. I use Mac OS X and I had a similar issue using by selenium and django.

answered Apr 01 '15 at 21:18

MatiasK

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PyCharm unable to connect to GhostDriver

2 Answers2

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