Re: [pyOpenSSL] pyopenssl and xmlrpclib

[Andrew G. <aga...@ge...>]

Andrew Gaffney wrote:
> Dan Williams wrote:
>> On Thu, 2006-06-15 at 10:14 -0500, Andrew Gaffney wrote:
>>> I'm trying to integrate xmlrpclib and pyopenssl. I'm mostly there, but I'm 
>>> running into a problem:
>> If you need some example code of doing SSL and all things XMLRPC, take a
>> look at the files here:
>>
>> http://cvs.fedora.redhat.com/viewcvs/extras-buildsys/common/?root=fedora
>>
>> specifically SSLCommon.py and SSLConnection.py.  Furthermore,
>> XMLRPCServerProxy.py, URLopener.py, FileTranser.py, FileDownloader.py,
>> and FileUploader.py might be of of interest as well.
>>
>> These implementations use nonblocking sockets by default, which have a
>> few other complications, but you can safely turn that off by passing
>> timeout values of None, I think.
>>
>> We've been running variations on this code for almost a year now in the
>> Fedora Extras build system, and it's been working pretty well.
>>
>> Dan
> 
> The RH implementation is close to what I had come up with, so I at least know I 
> was on the right track. That does get me a little farther, however, there's a 
> still a problem somewhere. I've modified my code to be as close to the RH code 
> and still have my own touches.
> 
> Currently, it looks like the request is sent, the headers are received back from 
> the server, and then the connection closes (but in a weird way). The 'closed' 
> var is getting set in the SSLConnection class, but stuff like select.select() 
> and socket.revc() don't seem to notice...they return "Bad file descriptor". I 
> added some code to SSLConnection's recv() to check self.closed and return None, 
> which gets me past that error. At that point, I get an exception from the XML 
> parsing code in xmlrpclib, apparently because no XML was ever sent back. The 
> following is a transcript of the session with the client code:

<transcript snipped>

Okay, I've gotten a little further in tracking down the problem. It appears to 
be an issue with the close_refcount thing in SSLConnection. It increments when 
makefile() is called and decrements when close() is called. Apparently, it looks 
like when HTTPConnection.getresponse() closes the connection after instantiating 
the response class, the response class never called makefile(), so the 
close_refcount is decremented to 0 and closed, even though the response class is 
using it. Any ideas on how to get around this?

-- 
Andrew Gaffney                            http://dev.gentoo.org/~agaffney/
Gentoo Linux Developer                                   Installer Project