multiple sub_filter rules for a reverse proxy on nginx?

Question

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?

Answer 1

Check HttpSubsModule module instead. Excerpt from documentation:

Several substitution rules per location can be specified

Answer 2

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