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--- wiki:nginx_redirect_rewrites [2022/09/23 12:42] – created antisa
+++ wiki:nginx_redirect_rewrites [2023/01/11 13:43] (current) – add Rewrite uppercase to lowercase antisa
@@ Line 46: / Line 46: @@
 You can check the rewrite messages in specified error log.
+===== Redirect based on browser's Accept-Language header that is sent =====
+server conf:
+<code nginx>
+   location / {
+        return 301 /$lang/$request_uri;
+    }
+    location /it {
+        proxy_pass http://ups;
+        proxy_set_header Host $host;
+    }
+    location /en {
+        proxy_pass http://127.0.0.1:3000/;
+        proxy_set_header Host $host;
+    }
+</code>
+In http context add the mapping for ''$lang'', e.g.
+<code nginx>
+http {
+        ...
+        map $http_accept_language $lang {
+                default en;
+                ~it it;
+                ~es es;
+                ~fr fr;
+        }
+        ...
+}
+</code>
+===== Rewrite uppercase to lowercase =====
+Install perl module first:
+  apt install nginx-module-perl
+Enable it in //nginx.conf// near top of file, outside of any section
+  load_module "modules/ngx_http_perl_module.so";
+Create perl rewrite function inside //http// section:
+<code nginx>
+# Include the perl module
+perl_modules perl/lib;
+# rewrite function from upper to lowercase
+perl_set $uri_lowercase 'sub {
+  my $r = shift;
+  my $uri = $r->uri;
+  $uri = lc($uri);
+  return $uri;
+}';
+</code>
+Use it in site configuration, maybe put it at end of file to not interfere with other routes (test this for your own setup)
+<code nginx>
+# if the path contains uppercase characters,
+# rewrite to lowercase
+location ~ [A-Z] {
+   rewrite ^(.*)$ $scheme://$host$uri_lowercase;
+}
+</code>
 ====== Tested on ======
   * Debian 11