Varnish url redirection does not work

[georgi.int at gmail.com]

Thank you about your reply. I am using varnish 3 and tried the following 
configuration:

if (req.http.host ~ "thedomain\.com" && req.url~ "^/disclib/download/") 
{ set req.backend = filedownload;  set req.http.connection = "close"; 
return (pipe); }

as I defined befor the backend filedownload, but the result is service 
unavailable.

Any other suggestions?


On 02/26/2016 09:45 PM, Paul A. Procacci wrote:
> On Fri, Feb 26, 2016 at 12:01:57PM +0200, georgi.int at gmail.com wrote:
>>     Hello,
>>     I would like to ask your for help after explaining the case and the
>>     infrastructure for this domain. In the varnish configuration I restrict
>>     some types of files to be accessed and downloaded and if some customer
>>     wants to use this functionality I configure subdomain on it's domain on
>>     nginx where these restrictions are not present. Although, my customer
>>     do not want to change the links to the new subdomains (which rely on
>>     nginx) in it's application and I want to redirect all old urls
>>     (domain.com/somedir/download) to the new one - download.thedomain.com,
>>     so if someone open the old url it's redirected to the subdomain on
>>     nginx and the content to be loaded from nginx, not varnish (as the way
>>     cpanel domain forwarder works).
>>     The problem is that when I followed and configured the varnish official
>>     documentation url guide it just change the url in varnishlog, but the
>>     content is again openef from varnish, not nginx, also the url in the
>>     browser is not rewritten.
>>     My questions are 1) is it possible and if yes how, but if not 2) what
>>     workaround can I use?
>>     Thank you in advance. I will wait for you reply.
> Hello,
>
> It'd be helpful if you shared the parts of your configuration which perform
> the rewriting of the url.
>
> That aside, in order for the browser to request a differnet resource requires
> a 301 (or similar) to be delivered from varnish or nginx.  Here's an example:
>
> #####################################################
> sub vcl_recv
> {
> 	if(req.http.host ~ "(?i)^nothere\.com$"){
>            if(req.url ~ "(i?)^/file\.jpg$") {
>                  return(synth(750, "http://here.com" + req.url));
> 	  }
>          }
> }
>
> sub vcl_synth
> {
>          if(resp.status == 750){
>                  set resp.http.Location = resp.reason;
>                  set resp.status = 301;
>                  return (deliver);
>          }
> }
> #####################################################
>
> Hope this helps.
>
> ~Paul