Yeah, thanks, looks that way on the face of it

... but can you guarantee that no other protocol/ports are used other than what's used for web browsing?
It would be nice to enter this into Google: mintupdate port
and get a definitive answer, but it doesn't look like anyone has ever written anything about it that looks like a link worth following
I'm having no luck trying to get things working with a proxy, an authenticated one to make things awkward, and http-only into the bargain... probably not 'an itch' that any programmer has wanted 'to scratch' yet.
viewtopic.php?f=157&t=84108&p=555060#p554608