Testing whether the VPN is running?

Adam Funk a24061 at ducksburg.com
Thu Feb 18 05:03:20 EST 2016

On 2016-02-18, Ervin Hegedüs wrote:

> Hi Adam,
> On Thu, Feb 18, 2016 at 09:26:58AM +0000, Adam Funk wrote:
>> I'd like to test (inside a python 3 program) whether the VPN is
>> running or not.  The only thing I can think of so far is to use
>> subprocess to run the 'ifconfig' command, then check its output for
>> 'tun0'.  Is there a better way?
> you didn't wrote, which system (OS) you want to use - based on
> the "ifconfig" and "tun0" keywords, possible that's a Linux.

Oops, sorry!  But your educated guess is right.  :-)

> I think that the psutil modul could be better for you for this
> task:
> https://pypi.python.org/pypi/psutil/
> and see the "Network" section.

if 'tun0' in psutil.net_if_addrs():
   # vpn is running

Brilliant!  I've used psutil for something else, but I didn't know it
did that too.  My excuse is that the version on my system was 2.2.1,
which does not do that, so I installed the newer version with pip3.
Thanks for pointing me to that.

XML is like violence: if it doesn't solve the problem,
use more.

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