Forum: NGINX rewrite Location header?

Hi.

Running nginx as a reverse proxy for trac. Reaching trac etc works, but 
when posting login credentials, trac returns a Location: header as seen 
below.

POST /somesite/login HTTP/1.1
Host: dev.somesite.co.za:8001
Referer: http://dev.somesite.co.za:8001/somesite/login
__FORM_TOKEN=ec42989d17edbcdec96290d6&referer=http%3A%2F%2Fdev.somesite.co.za%3A8001%2Fsomesite&user=user&password=pass
-
HTTP/1.x 303 See Other
Server: tracd/0.11.6 Python/2.5.2
Date: Wed, 03 Feb 2010 13:37:16 GMT
Location: http://dev.somesite.co.za:8001/somesite

This is the case when going through nginx too, but I now need to rewrite 
the Location response header to http://ip_to_nginx:port/ instead, as the 
trac server is not reachable from the outside.
Im kind of stuck :(

Here's the simple proxy_pass config:
      location /somesite {
               proxy_pass http://192.168.1.9:8001/somesite;
      }

Posted at Nginx Forum: 
http://forum.nginx.org/read.php?2,49946,49946#msg-49946

On Wed, Feb 03, 2010 at 08:50:33AM -0500, 3molo wrote:

> Server: tracd/0.11.6 Python/2.5.2
> Date: Wed, 03 Feb 2010 13:37:16 GMT
> Location: http://dev.somesite.co.za:8001/somesite
> 
> This is the case when going through nginx too, but I now need to rewrite the Location response header to http://ip_to_nginx:port/ instead, as the trac server is not reachable from the outside.
> Im kind of stuck :(
> 
> Here's the simple proxy_pass config:
>       location /somesite {
>                proxy_pass http://192.168.1.9:8001/somesite;
>       }

You should add
                 proxy_redirect http://dev.somesite.co.za:8001/  /;


--
Igor Sysoev
http://sysoev.ru/en/

I think I might put it in incorrect place;


      location /somesite {
      proxy_redirect http://dev.somesite.co.za:8001/ /;
      proxy_pass http://192.168.1.9:8001/somesite;
      }

Still the same Location header thou

Posted at Nginx Forum: 
http://forum.nginx.org/read.php?2,49946,49979#msg-49979

my nginx is http://192.168.1.100:80 btw

Posted at Nginx Forum: 
http://forum.nginx.org/read.php?2,49946,49980#msg-49980

On Wed, Feb 03, 2010 at 09:41:30AM -0500, 3molo wrote:

> my nginx is http://192.168.1.100:80 btw

Then you should set
    server_name  192.168.1.100;

and remove proxy_redirect.


--
Igor Sysoev
http://sysoev.ru/en/

Thanks alot for your help, Igor.

server_name already is 192.168.1.100;

Here's my complete config:

user       www-data www-data;
worker_processes  1;
error_log  logs/error.log;
pid        logs/nginx.pid;
worker_rlimit_nofile 8192;

events {
  worker_connections  4096;
}

http {
  include    /etc/nginx/mime.types;

 ## Proxy options
  proxy_buffering           on;
  proxy_cache_min_uses       3;
  proxy_cache_path          /usr/local/nginx/proxy_temp/ levels=1:2 
keys_zone=cache:10m inactive=10m max_size=1000M;
  proxy_cache_valid         any 10m;
  proxy_ignore_client_abort off;
  proxy_intercept_errors    on;
  proxy_next_upstream       error timeout invalid_header;
  proxy_redirect            off;
  proxy_set_header          X-Forwarded-For $remote_addr;
  proxy_connect_timeout     60;
  proxy_send_timeout        60;
  proxy_read_timeout        60;

  default_type application/octet-stream;
  log_format   main '$remote_addr - $remote_user [$time_local]  $status 
'
    '"$request" $body_bytes_sent "$http_referer" '
    '"$http_user_agent" "$http_x_forwarded_for"';
  access_log   logs/access.log  main;
  sendfile     on;
  tcp_nopush   on;
  server_names_hash_bucket_size 128; # this seems to be required for 
some vhosts

  server {
      access_log  /var/log/nginx/access.log main;
      error_log   /var/log/nginx/error.log;
      index       index.html;
     listen      192.168.1.100:80 default;
      root        /usr/local/nginx/html;
      server_name 192.168.1.100;

      # Proxy
      location /agilo {
        proxy_pass http://192.168.1.9:8001/;
      }

      location /svn {
        proxy_pass http://192.168.1.9/svn/;
      }
      location /somesite {
      proxy_pass http://192.168.1.9:8001/somesite;
      }
      }
}

Posted at Nginx Forum: 
http://forum.nginx.org/read.php?2,49946,50284#msg-50284

Here's the capture from the FF plugin Live HTTP headers, as you can see 
it's the same Location: redirect as when I post /somesite/login directly 
to the "backend".

-
http://192.168.1.100/somesite/login
-
POST /somesite/login HTTP/1.1
Host: 192.168.1.100
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.15) 
Gecko/2009102815 Ubuntu/9.04 (jaunty) Firefox/3.0.15
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer: http://192.168.1.100/somesite/login
Cookie: trac_form_token=8a237ed09a65182989b124f6; 
trac_session=f3274da16804f3b8fbc786ea; 
somesite_ZA_=6943021B818EE459F689B7CB2F203A8A3F0AD05F
Content-Type: application/x-www-form-urlencoded
Content-Length: 127
__FORM_TOKEN=8a237ed09a65182989b124f6&referer=http%3A%2F%2F192.168.1.100%2Fsomesite&user=user&password=pass
---
---

HTTP/1.x 303 See Other
Server: nginx/0.7.65
Date: Thu, 04 Feb 2010 06:24:20 GMT
Content-Type: text/plain
Connection: keep-alive
Location: http://dev.somesite.co.za:8001/somesite
Content-Length: 0
Pragma: no-cache
Cache-Control: no-cache
Expires: Fri, 01 Jan 1999 00:00:00 GMT
Set-Cookie: trac_auth=21e23f09d99de1381683a341118d37ad; Path=/somesite
Set-Cookie: trac_session=f3274da16804f3b8fbc786ea; expires=Thu, 
04-Feb-2010 06:24:35 GMT; Path=/somesite
----------------------------------------------------------

Posted at Nginx Forum: 
http://forum.nginx.org/read.php?2,49946,50289#msg-50289