Radiodawg is a Volumio service handling automatic resuming of webradios in case of internet drop-outs.
Python script radiodawg.py periodically (default timeout = 1 sec) queries Volumio's status to determine whether we are streaming a webradio. If so, it checks, whether a DNS service (default is 8.8.8.8, Google's DNS service) is reachable. If not, Volumio playback is stopped and is not resumed, until the DNS becomes reachable again.
To install the Radiodawg service, copy/move radiodawg.py to /usr/bin/ and radiodawg.service to /lib/systemd/system/.
Then, to enable the service (let it run automatically at startup), run the following command:
$ sudo systemctl enable radiodawg.service
Please note that up until now, Radiodawg has only been tested with Volumio 2.861 running on Raspberry Pi 3.