code cannot handle http proxy

[yiweny]

Describe the bug
We are running a proxy service so the base is using http instead of https

path = decoded["next_url"].replace(self.BASE, "")

is causing a bug because it doesn't handle when the base is https.
We would get an error like

<urllib3.connection.HTTPConnection object at 0x7ec3ac4389e0>: Failed to resolve \'<proxy address>https\' ([Errno -2] Name or service not known)"))\n'

To Reproduce

Expected behavior
Fix it so it handles the case when base is http:

Screenshots

Additional context

[justinpolygon]

Hello, just a heads up I'm looking at this now.

[justinpolygon]

Hi @yiweny, here's a draft PR that likely solves your request. This was a new feature in that base was mostly used for internal testing against development endpoints and we never really thought about people using this as a proxy address. Do you mind checking out #890 and seeing if this makes sense? Sorry for the delay here it took a bit to understand what was actually needed.