Re: Problems with caching ftps....

Hello James and the other list members,

> I have a problem with caching ftp's. Our squid cache is setup to get
> anything in the uk domain directly otherwise to use either its one neighbour (I
> believe the neighbour runs a harvest cache) or from one of six parents all
> running Netscape Proxy 2.5 Caches.

I have seen this problem also with 1.1.5 and 1.1.6 and sent a bug report
to squid-bugs@nlanr.net, and queries to the national cache maintainers.

The problem is an interaction between Squid and Netscape's proxy
(presumable the hensa national academic cache)

User Squid Netscape

reqeust ftp:/some.site/pub/
                              forwards:
                              ftp:/some.site/pub

                                                      Sees /pub is a
                                                      directory, and
                                                      sends a redirect
                                                      to /pub/

                              Passes redirect to
                              user

resubmits the same
URL and repeat.

there is a special case that does work with squid -> netscape. That of the
root directory. ftp://some.site/ will work, because the canonical form
ala squid is still ftp://some.site/

---
As a temporary work-around, I have setup another pair of parents which 
run squid rther than netscape, with very high weights.  This means that
most of the time the ftp request is retrieved from a squid-cache and things
work okay.
Regards
Mark
(I have a much smaller section of log that shows this problem if anyone 
wants a copy)
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Mark Cooke                  The views expressed above are mine and are not
Systems Programmer          necessarily representative of university policy
University Of Birmingham    URL: http://www.sr.bham.ac.uk/~mpc/
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