not reproxying alternate files

[hachi]

Thanks for catching this. Patch is being applied right now.

I kept swearing that it was working fine, and the test I ran to confirm 
this showed it working as well. I had 3+ URLS in the list though, so 
that's why it was "working"

Eric Lambrecht wrote:
> We just noticed that our perlbal wasn't reproxying the alternate files 
> we gave to it via X-REPROXY-URL when the first file was missing. We'd 
> send this:
>
>     X-REPROXY-URL: http://127.0.0.1/foo http://127.0.0.1/bar
>
> If 'foo' didn't exist on the remote server, perlbal was returning a 
> 503 response and not trying to get 'bar'.
>
> It's basically because both try_next_uri and use_reproxy_backend shift 
> items off the $ClientProxy->reproxy_uris array. The second choice was 
> being shifted off before we got a chance to try it.
>
> Funny that it took us 2 years to notice this...
>
> Eric...
>
>
> --- ClientProxy.pm      2008-02-28 17:32:13.000000000 -0800
> +++ ClientProxy.pm.new  2008-02-28 17:32:41.000000000 -0800
> @@ -184,7 +184,6 @@
>  sub try_next_uri {
>      my Perlbal::ClientProxy $self = $_[0];
>
> -    shift @{$self->{reproxy_uris}};
>      $self->{currently_reproxying} = undef;
>      $self->start_reproxy_uri();
>  }