Checking http response codes

[cripy]

It's currently not possible to do this in VCL that I know of...I have come
up with a solution for a similar issue I had with varnish cache'ing 401
Unauthorized responses, thus denying legit authenticated users the proper
content because they are being serviced the 401.  What I did is jumped into
the function cnt_fetch in bin/varnishd/cache_center.c here's a snippet...

--- /tmp/clean/varnish-1.0.4/bin/varnishd/cache_center.c        2007-05-20
10:38:16.000000000 -0700
+++ cache_center.c      2007-05-23 14:55:43.000000000 -0700
@@ -286,7 +286,8 @@
 cnt_fetch(struct sess *sp)
 {

-
+       struct vbe_conn *vc;
+
        if (Fetch(sp)) {
                sp->obj->cacheable = 0;
                HSH_Unbusy(sp->obj);
@@ -300,6 +301,11 @@
        RFC2616_cache_policy(sp, &sp->obj->http);       /* XXX -> VCL */

        VCL_fetch_method(sp);
+       vc = VBE_GetFd(sp);
+
+       if (http_GetStatus(vc->http) == 401)
+               sp->handling = VCL_RET_PASS;
+        VBE_ClosedFd(sp->wrk, vc, 0);

        if (sp->handling == VCL_RET_ERROR)
                INCOMPL();
@@ -353,6 +359,64 @@
        sp->step = STP_DONE;
        return (0);
 }



On 5/30/07, Thomas Westlund <thomas.westlund at aftenposten.no> wrote:
>
> Hi,
>
> I'm having av bit of keyboard trouble this morning, so forgive me if i
> post this question more than once, (too early still perhaps ;)
>
> If I would like to do a check based on the response code from the backend
> how can I do this in VCL
>
> I would like to be able to not cache 404's or to set the timeout to a very
> low number for 404's.
>
> I have checked the vcl man page, but I'm unable to find which statement to
> use for the if clause
>
> --
>
> Thomas Westlund
> Aftenposten AS, UNIX/nettverksavd.
> Postboks 1, 0051 Oslo
> Tlf: +47 98 20 30 33
> Fax: +47 22 86 40 74
> _______________________________________________
> varnish-misc mailing list
> varnish-misc at projects.linpro.no
> http://projects.linpro.no/mailman/listinfo/varnish-misc
>
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