getting remot4e address

[rkmr.em at gmail.com]

On Tue, Feb 26, 2008 at 1:24 PM, Igor Sysoev <is at rambler-co.ru> wrote:
>
> On Tue, Feb 26, 2008 at 01:11:40PM -0800, rkmr.em at gmail.com wrote:
>
>  > On Tue, Feb 26, 2008 at 1:00 PM, Igor Sysoev <is at rambler-co.ru> wrote:
>  > > On Tue, Feb 26, 2008 at 12:52:56PM -0800, rkmr.em at gmail.com wrote:
>  > >  > On Tue, Feb 26, 2008 at 12:08 PM, Igor Sysoev <is at rambler-co.ru> wrote:
>  > >  > > On Tue, Feb 26, 2008 at 11:58:16AM -0800, rkmr.em at gmail.com wrote:
>  > >  > >
>  > >  > >  > x-forwarded-for enabled in the haproxy configuration.
>  > >  > >  > How do I configure nginx so that my fastcgi backends get this IP
>  > >  > >  > address as the remote ip address and not the ip address of the
>  > >  > >      location / {
>  > >  > >           set  $addr  $remote_addr;
>  > >  > >
>  > >  > >           if ($http_x_forwarded_for ~ "(^|,)\s*(\d+\.\d+\.\d+\.\d+)\s$") {
>  > >  > >                set  $addr  $1;
>  > >  > >           }
>  > >  > >
>  > >  > >           ...
>  > >  > >           fastcgi_param  REMOTE_ADDR   $addr;
>  > >  >
>  > >  > hi igor,
>  > >  > thanks for your reply.
>  > >  > i tried what you gave, and i still get only the ip address of the
>  > >  > haproxy in my backends,
>  > >  My mistake:
>  > >
>  > >  -          if ($http_x_forwarded_for ~ "(^|,)\s*(\d+\.\d+\.\d+\.\d+)\s$") {
>  > >  +          if ($http_x_forwarded_for ~ "(^|,)\s*(\d+\.\d+\.\d+\.\d+)\s*$") {
>  >
>  > igor:
>  > now for ip in the fastcgi backend i get an empty string
>  > 'ip': ''
>  >
>  > current config:
>  >          set  $addr  $remote_addr;
>  >          if ($http_x_forwarded_for ~ "(^|,)\s*(\d+\.\d+\.\d+\.\d+)\s*$") {
>
>  -          if ($http_x_forwarded_for ~ "(^|,)\s*(\d+\.\d+\.\d+\.\d+)\s*$") {
>  +          if ($http_x_forwarded_for ~ "(?:^|,)\s*(\d+\.\d+\.\d+\.\d+)\s*$") {
>
>  >               set  $addr  $1;

works great now!!!
here is the final config:

         set  $addr  $remote_addr;
         if ($http_x_forwarded_for ~ "(?:^|,)\s*(\d+\.\d+\.\d+\.\d+)\s*$") {
               set  $addr  $1;
         }
thanks a lot