[Box-Admins] Re: I need Help (was Re: Squeak Wiki Problem)

[Jochen F. Rick]

Hi Ken,

I was finally able to get somebody to help me check this. I have a fix. 
I'm attaching it.

Peace and Luck!

Jeff


On Thu, Jan 18, 2007 at 05:51:10PM -0600, Ken Causey wrote:
> Here is what I have found:
> 
> "If a request has passed through multiple proxies then the
> X-Forwarded-For may contain several IPs like this: 
> 
> X-Forwarded-For: client1, proxy1, proxy2"
> 
> http://www.openinfo.co.uk/apache/index.html
> 
> And this appears to be true for the one example I have seen.   So
> fundamentally I think you simply need to look the first quad and ignore
> the rest.  At the same time, if it is non-blank, but you can't extract
> the host address, you probably should treat it as if the x-forwarded-for
> header is simply non-existent.
> 
> Ken
> 
> On Thu, 2007-01-18 at 18:13 -0500, Jochen F. Rick wrote:
> > Interesting. Why would it have two x-forwarded-for addresses? In other 
> > words, what is the meaning of the other address? Which address should be 
> > used?
> > 
> > Peace and Luck!
> > 
> > Jeff
> > 
> > 
> > 
> > On Thu, Jan 18, 2007 at 04:16:45PM -0600, Ken Causey wrote:
> > > I have been debugging the reported problems accessing the
> > > wiki.squeak.org wiki for those behind a proxy.  I have tracked it down
> > > to the implementation of HttpRequest>>initProxyForwarding in the image.
> > > It assumes that if an x-forwarded for header exists that it is a single
> > > IP address.  This appears to be a poor assumption.  For example:
> > > 
> > > x-forwarded-for: 74.141.6.178, 62.90.138.162
> > > 
> > > I have not so far been able to track down documentation to confirm
> > > whether or not this is 'officially' valid.  Nonetheless Swiki should
> > > probably not fail when this assumption is invalid.
> > > 
> > > Ken
> > 
> > 
> > 



-- 
Jochen "Jeff" Rick, PhD Candidate, Georgia Tech College of Computing
jochen.rick at cc.gatech.edu, http://www.je77.com/, work: 404-385-1105
-------------- next part --------------
A non-text attachment was scrubbed...
Name: ProxyForwarding2.st.gz
Type: application/x-gunzip
Size: 411 bytes
Desc: not available
Url : http://lists.squeakfoundation.org/pipermail/box-admins/attachments/20070130/908407c6/ProxyForwarding2.st.bin