trouble with location regex and redirection in nginx

Question

I want to setup proxy in nginx:

location ~ ^/m/([^/]*)/([^/]*)/([^/]*)$ {
  proxy_pass http://127.0.0.1:8080/redir/m/$1/$2/$3;
  proxy_redirect off;
  proxy_set_header Host $host;
  proxy_set_header X-Real-IP $remote_addr;
  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}

It works but this address

http:// myhost/m/test//ss

gets translated to

http:// 127.0.0.1:8080/redir/m/test/ss;

How can I get my second slash?? Thanx.

Answer 1

You can't. A // is defined as being equivalent to /, and nginx will always reduce a URL to the canonical form before passing it on.