varnish changes HEAD to GET on backend request

[Poul-Henning Kamp]

In message <1271259971.28720.86.camel at oasis>, Taylan Develioglu writes:

>The default behavior of varnish 2.1 seems to be changing HEAD requests
>into GET before sending them to the backend.

Yes, in the vcl_miss{} path, varnish currently only uses GET to the
backend, the presumption is that if we get a HEAD request, we're
also likely to need the object body soon after.

> sub vcl_pass {
>     if (req.request == "HEAD") {
>         set bereq.request = "HEAD";
>     }
> }

A HEAD being pass'ed will go unmodified to the backend, so this
should do nothing


> sub vcl_miss {
>     if (req.request == "HEAD") {
>         set bereq.request = "HEAD";
>     }
> }

This will confused varnish program logic, and do nothing good.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
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