Re: Problems with caching ftps....

From: Mark Cooke <>
Date: Tue, 11 Feb 1997 17:20:16 +0000 (GMT)

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, 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:/

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

                              Passes redirect to

resubmits the same
URL and repeat.

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

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.
(I have a much smaller section of log that shows this problem if anyone 
wants a copy)
Mark Cooke                  The views expressed above are mine and are not
Systems Programmer          necessarily representative of university policy
University Of Birmingham    URL:
Received on Tue Feb 11 1997 - 09:39:44 MST

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