CGI with Python (on proxy with HTTPS)

Hello there

I have been trying to write a Python script which would access a CGI script
on a https server behind a proxy, and I am getting nowhere.

First, the setup:
There is a proxy, where you get when entering an URL like (domainnames
changed):
URL
(no login required)

The server I'd like to access is:
URL
resp. the cgi script
URL
(login required for both)

To access this server I wrote a script called query.py:

a) using urllib.urlopen('www.myproxy.com/server/cgi-gin/server.py'):
urlopen asks me for a username and a password and I can read the output of the cgi script. The problem is: I can not POST any arguments within this urlopen command (I usually have several fields and upload files as arguments, using cgi.FieldStorage() containing fields with 3 entries (name, filename, content of file)).

b) using urllib2.urlopen and ProxyHandler and HTTPBasicAuthHandler:
apart from the fact, that I don't really know what I am doing, it doesn't work.

c) using httplib.HTTP(host):
this worked perfectly, as long as the cgi was on a http server. When changing to https, the script doesn't work anymore (even if using httplib.HTTPS()).


Is there an easy way of doing this? I would prefer something like a) with a
working POST, or a c) with a login prompt like in a).

Thanks for any help.

Bruno