varnish using as a proxy interfering with get requests

[Andrei]

Also, you'll want to enable ProxyPreserveHost in Apache.

http://httpd.apache.org/docs/2.2/mod/mod_proxy.html#proxypreservehost
http://httpd.apache.org/docs/2.4/mod/mod_proxy.html#proxypreservehost

On Jul 17, 2016 17:51, "Jeff Potter" <jpotter-varnish at codepuppy.com> wrote:

>
> Is apache getting a Host header as well? I would expect a correct request
> to look like:
>
> GET /url
> Host: website.com
>
> -J
>
> On Jul 16, 2016, at 4:24 PM, varnish list <
> maillist-varnish at iamafreeman.com> wrote:
>
> Hello
>
> I'm attempting to use varnish in a somewhat unusual manner, but with
> fairly good reason I think.
>
> browser -> varnish server :80 -> apache proxy (localhost:3128) -> any site
>
> the idea being to use varnish to fire off statd timing info to get metrics
> on operations against an number of systems, some we run, some out sourced,
> in a standard manner
>
> issue is varnish 4.1.3, but I've tried other 4's, interferes with the
> users request
>
> I'm comparing the request using tshark and varnishlog
>
> proxy request can look like
>
> GET http://website.dom/url
> I see that hit varnish from the browser
>
> what apache gets is
> GET /url
>
> I can't figure out what is stripping the http://website.dom. My
> default.vcl is practically empty
>
> vcl 4.0;
> import std;
> import statsd;
> import timers;
>
> backend default {
>     .host = "127.0.0.1";
>     .port = "3128";
> }
>
> sub vcl_recv {
>     return (pass);
> }
>
> sub vcl_backend_response {
> }
>
> sub vcl_deliver {
>     if (req.url ~ "/REST/UI/Content/CheckOut") {
>        statsd.incr("website.checkout");
>     }
> }
>
> sub vcl_init {
>         statsd.server( "statdcollector.dom", "8125" );
>         statsd.prefix( "proxy.test." );
> }
>
> varnish 3.0.5 didn't do this, but its statd and timing support isn't great
> and old hat, so I'm none too interesting in sticking with 3
>
> Any clues where I find and disable this interference?
>
> Thanks
>
> Neil
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>
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