SSL Sockets in Windows

Gerhard Häring gh_pythonlist at gmx.de
Sat Dec 29 17:05:26 CET 2001


Le 29/12/01 à 16:03, Syver Enstad écrivit:
> Gerhard Häring <gh_pythonlist at gmx.de> writes:
> 
> > Le 28/12/01 à 07:18, Syver Enstad écrivit:
> > > 
> > > Hi Al, I'm not exactly an expert on SSL :-). I know it's what goes
> > on
> > 
> > > behind the scenes when my browser uses an https url and
> > communication
> > 
> > > is encrypted and whatnot. 
> > > 
> > > Do you have (or can you refer me to) a quick
> > > example to check that SSL is indeed working on Python?
> > 
> > You can check pretty easily if your Python is compiled with SSL
> > support:
> > 
> >     
> >     'ssl' in dir(socket)
> 
> Yes, returns true (1)
> > If so, you should be able to fetch a HTML page with the urllib module:
> > 
> > 
> >     print urllib.urlopen("https://www.sf.net/").read()
> 
> Yes, this fetches the front page of sourceforge, which says that I'm
> not logged in.
> 
> What would happen if I didn't have SSL installed.

'ssl' in dir(socket) will return 0, because the entire SSL stuff in
socketmodule.c is #ifdef'd out.

print urllib.urlopen("https://www.sf.net/").read() raises

Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "/usr/lib/python2.1/urllib.py", line 71, in urlopen
    return _urlopener.open(url)
  File "/usr/lib/python2.1/urllib.py", line 173, in open
    return self.open_unknown(fullurl, data)
  File "/usr/lib/python2.1/urllib.py", line 185, in
    open_unknown
  raise IOError, ('url error', 'unknown url type', type)
IOError: [Errno url error] unknown url type: 'https'

> You see I compiled up a new version of _socket.pyd with VC++ 6 and
> this time I specified that SSL shouldn't be compiled in. 'ssl' in
> dir(socket) still returns true, and the download goes without a
> hitch too. I haven't checked with a packet sniffer though.

You seem to still have SSL compiled in. Be sure to replace your
_socket.pyd with the one without SSL. Using "python -v" helps tracking
down which module really is loaded.

Gerhard
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