Re: Bug#30643: base: apt-get update problems with http-/ftp-caches (i.e. squid)

[Thomas Osterried <thomas@x-berg.in-berlin.de>]

On Sat, Dec 12, 1998 at 01:56:15PM -0700, Jason Gunthorpe wrote:
> > apt-get gets  the package-descriptions.  the proxy  learns them.  but it
> > seems, that  in the  next runs  of apt-get squid  offers always  the old
> > files.
> Squid does not support the HTTP cache-control headers so there is no way
> to inform it to reload the cache. The new aot sends the proper cache

hmm, as far as  i can see (in the source), squid does  look if a page is
reloaded by a client, looking at the "Pragma: no-cache" tag.

squid-2.1.RELEASE/src/client_side.c:
    if (httpHeaderHas(req_hdr, HDR_PRAGMA)) {
        String s = httpHeaderGetList(req_hdr, HDR_PRAGMA);
        if (strListIsMember(&s, "no-cache", ',')) {
#if HTTP_VIOLATIONS
            if (Config.onoff.reload_into_ims)
                request->flags.nocache_hack = 1;
            else if (refresh_nocache_hack)
                request->flags.nocache_hack = 1;
            else
#endif
                request->flags.nocache = 1;
        }
        stringClean(&s);
    }


in practise, the almost the first thing  a newby has to learn is, not to
believe that the page  she/he gets (via the proxy) is  the newest o$ne -
and in doubt to  press the reload button in order to  force an update of
the cache.

``wget --cache=off ..'' uses this feature, too.

> > i'd like to  use (squid-)proxied ftp, but apt's ftp  does not handle it.
> > thus, i'm notable to use my nearest mirror :(
> 
> Have you asked your nearest mirror to add http access?

i think that leads every user to solve her/his individual problem.

in my current situation, i use wget with export ftp_proxy=http://....
wget uses the squid proxy that receives
GET ftp://ftp.ftu-berlin.de:21/unix/linux/mirrors/debian/.....  HTTP/1.0
User-Agent: Wget/1.5.3
Host: localhost:21
Accept: */*
Pragma: no-cache
and i install the received debain package manually with dpkg -i.

but i´d like to use apt-get instead..


cheers,
	- thomas  <thomas@x-berg.in-berlin.de>