Oof yeah https in localhost fucking sucks lol. And funny you mention that since yesterday I did some python exercise in university where I basically made a very simple TLS server and a TLS client connecting to it exchanging raw data. It's supposedly an example of a "VPN" for my "Information Assurance and Security 2" course but I didn't see any VPN or IPsec shit in the sample code lol (professor still approved tho when I showed the code working). But it did need a self-signed cert in the server and the client specifically trusting that cert in its cafile= for ssl.create_default_context, which the lecture didn't hint at all, or try to disable the certificate verification in the sample code given (just learned right now I could've added CERT_NONE in the ssl context to disable cert verification, but eh :P)