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with no evil plans I am trying to mirror a site under other domain, while changing a few strings on the fly.

I set up nginx on a new host to serve as a RP to the master site. This allows to set one rule of replacement:

sub_filter      Originalstring  'new string';
sub_filter_once off;

However, I'd like to have several rules running, which sub_filter allows only one per location.

What can be a solution here, if any?

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3 Answers 3

Check HttpSubsModule module instead. Excerpt from documentation:

Several substitution rules per location can be specified

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1  
Thanks, AlexD, I am aware of the HttpSubsModule, which is not installed on the shared hosting, I am trying to implement the feature at. Looking for a possible hack or a workaround for the available HttpSubModule. –  Sergiks Jun 20 '11 at 9:52

It has been 3 years since this question was asked and a lot has changed. This answer is to help anyone like me. The current version of nginx allows to create multiple sub filter rules under one location directive. Like so

location / {
   resolver   8.8.8.8;
   proxy_pass http://original-domain.com;
   proxy_set_header Accept-Encoding "";
   proxy_set_header original-domain.com;

   subs_filter_types text/css text/xml;
   subs_filter a.original-domain.com b.mydomain.com;
   subs_filter http://$host https://$host;
}

You can add as many filters as you wish.

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Are you using the built in ngx_http_sub_module (nginx.org/en/docs/http/ngx_http_sub_module.html) or the 3rd party plugin wiki.nginx.org/HttpSubsModule? –  Sascha Mar 31 at 13:49
    
I'm using the built-in module. You can check your nginx's error.log file to figure out more about the error in your code. –  Raees Iqbal Apr 6 at 13:50

I guess you may setup several locations or server_names with one sub_filter per earch and proxy the request through them.

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