Cookie validation with varnish?

Sam Crawford samcrawford at
Mon May 25 19:37:48 CEST 2009

I too would be very interested in this.

I'm not sure if Simon's original suggestion is possible in VCL, but I'm
going to have an experiment and see if I can make it work.



2009/5/20 Poul-Henning Kamp <phk at>

> In message <4A13C176.6020202 at>, Simon Kammerer writes:
> >Web application sets cookie for user authentication, varnish acts as
> >reverse proxy in front of dedicated image servers and checks if the
> >cookie send by the user is a valid cookie set by the web application.
> I would love to extend VCL to allow such stuff to be done, but right
> now my focus is on persistent storage.
> Poul-Henning
> PS: We are happy to hand out "wiki" bits (drop me an email), so
> people can add ideas to our "shopping list" wiki page:
> --
> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> phk at FreeBSD.ORG         | TCP/IP since RFC 956
> FreeBSD committer       | BSD since 4.3-tahoe
> Never attribute to malice what can adequately be explained by incompetence.
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