Ban URL - req.backend unsupported?

[Dag Haavi Finstad]

On Mon, Jun 24, 2013 at 7:30 AM, Cedric Jeanneret <varnish at tengu.ch> wrote:
>
>
> I'm trying to ban some content matching the configured req.backend, but it seems it's not working as expected:
>
> varnish> ban req.backend == "foo_bar" && req.url ~ "^/baz/foo"
> 106
> unknown or unsupported field "req.backend"
>
> I thought the ban syntax would take any of VCL variable (req.url, obj.set-cookie, req.http.host… and so on)… ?


Currently, ban expressions are restricted to the following variables:
  req.url
  req.http.*
  obj.http.*
  obj.status


So yes, you won't be able to use req.backend in a ban expression. I'm
not sure if there are any plans to expand on this.

--
Dag Haavi Finstad
Software Developer | Varnish Software AS
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