gistfile1.nginxconf

worker_processes 1;
error_log stderr notice;
daemon off;

events {
  worker_connections 1024;
}

http {
  server {
    listen 8080;

    resolver 8.8.8.8;

    location ~* ^/proxy_test/(.*?)/(.*) {
      proxy_pass_request_headers off;
      proxy_pass http://$1/$2;
    }

    location ~* ^/test/(.*?)/(.*) {
      set $a $1;
      set $b $2;
      content_by_lua '
        local url = "/proxy_test/" .. ngx.var.a .. "/" .. ngx.var.b
        res = ngx.location.capture(url)
        ngx.header.content_type = "text/plain"
        ngx.say(res.status)
    ';
    }
  }
}