Does AntennaPod support HTTP basic authentication all the way through content retrieval? For example, if a URL for the feed includes a username and password, is that username and password sent through content requests as well as feed retrieval? How standard is this in the overall podcast ecosystem?
Yes, AntennaPod supports this. It is definitely used in the wild (we got bug reports about it in the past) but I think it’s not that commonly used. Maybe because other apps don’t support it. Most creators just use a different feed URL for different users (essentially with an access token baked into the url)