VPN Checker service.

How to install

1. Clone this repository into your local system.
2. Start a new python virtual environment:

   $: sudo apt install virtualenv
   $: virtualenv -p python3 vpn_checker

3. Activate the new virtual environment:

   $: source vpn_checker/bin/activate

4. Move into the repository source code.
5. Install the python requirements for this project to work:

   (vpn_checker)$: pip install -r requirements.txt

6. Now you can run the VPN Checker service.

   (vpn_checker)$: python main.py

Creating a Linux service daemon using Systemd

1. Create a vpn_checker.service file into the /etc/systemd/system folder with the following content:

   [Unit]
   Description=VPN Checker Service
   After=network.target
   StartLimitIntervalSec=0
   
   [Service]
   Type=simple
   Restart=always
   RestartSec=1
   User=<TYPE YOUR USERNAME HERE>
   Environment="DISPLAY=:0.0"
   Environment="DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus"
   ExecStart=$VIRTUALENV_PATH/bin/python $SOURCES_PATH/main.py
   
   [Install]
   WantedBy=multi-user.target

   NOTE: You need to change the values for the DISPLAY and DBUS_SESSION_BUS_ADDRESS environment variables. Normally if you execute echo $DISPLAY and echo $DBUS_SESSION_BUS_ADDRESS you will be able to get this values and replace them. Also you need to replace the VIRTUALENV_PATH value to match the correct python virtual environment directory path in your system and the SOURCES_PATH to match the repository sources directory path also in your system :).

2. With the previous step in place, now we can enable this new service into the systemd environment:

   $: sudo systemctl enable vpn_checker.service

3. And finally we can start the vpn_checker service:

   $: sudo systemctl start vpn_checker

NOTE: Now, every time you start your computer, systemd will automatically start the vpn_checker service. So, if you want to stop the service manually, then you need to run sudo systemctl stop vpn_checker.