Use HTTPS instead of HTTP when connect to Viessmann
Use HTTPS instead of HTTP when connect to Viessmann

Viessmann doesn't redirect to HTTPS so using HTTP login credentials sent
in clear text. HTTPS is supported by the server and seems to work fine
for a couple days for me. You can check that clear text is used with:

sudo tcpdump host www.viessmann.com -A

maxatome/go-vitotrol