SX86

Hi! I've been using your script for quite a while, but it somehow stopped working today for my wildcard A record. I tried using both the `godaddy_ddns.py --ip IP --key...

Changes to `proxy_set_header Connection` needed.

2

**Issue:** I found that using `proxy_set_header Connection "upgrade";` would cause the following error on some reverse proxy'd web apps. `Microsoft.AspNetCore.Server.Kestrel.Core.BadHttpRequestException: Requests with 'Connection: Upgrade' cannot have content in the request...