Hi John, Thanks for your help, it was the problem. I simply added the option http-server-close in my config and it's ok now !!
Regards, Christophe De : John Helliwell <[email protected]<mailto:[email protected]>> Date : Tue, 6 Sep 2011 05:16:03 -0700 À : Christophe Rahier <[email protected]<mailto:[email protected]>> Cc : "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Objet : Re: Option forward for and IIS I believe your problem is because, for keepalive sessions, HAproxy is only adding an X-Forwarded-For header on the first HTTP transaction of the keepalive session. This can be alleviated by using "option http-server-close", which allows keepalive on the client side, but uses Close mode on the server side. The X-Forwarded-For header will then be present on all HTTP transactions. On 6 September 2011 12:59, Christophe Rahier <[email protected]<mailto:[email protected]>> wrote: Hi, I installed HAProxy on 2 Debian server for loadbalancing 6 webserver (IIS). All works fine but I've a small problem. In IIS, I added an ISAPI filter to read the X-Forwarded-For value. In the IIS log file, I've a mixed of my loadbalancer IP (192.168.0.3) but also the official IP (xxx.xxx.xxx.xxx), for example: 2011-09-05 13:33:21 192.168.0.61 GET /v8/ - 80 - 87.67.52.233 Opera/9.80+(Macintosh;+Intel+Mac+OS+X+10.7.1;+U;+en)+Presto/2.9.168+Version /11.51 302 0 0 93 2011-09-05 13:33:21 192.168.0.61 GET /v8/login.cfm - 80 - 192.168.0.3<tel:80%20-%20192.168.0.3> Opera/9.80+(Macintosh;+Intel+Mac+OS+X+10.7.1;+U;+en)+Presto/2.9.168+Version /11.51 200 0 0 140 2011-09-05 13:33:21 192.168.0.61 GET /CFIDE/scripts/cfform.js - 80 - 192.168.0.3 Opera/9.80+(Macintosh;+Intel+Mac+OS+X+10.7.1;+U;+en)+Presto/2.9.168+Version /11.51 200 0 0 46 2011-09-05 13:33:21 192.168.0.61 GET /CFIDE/scripts/masks.js - 80 - 192.168.0.3 Opera/9.80+(Macintosh;+Intel+Mac+OS+X+10.7.1;+U;+en)+Presto/2.9.168+Version /11.51 200 0 0 15 2011-09-05 13:33:21 192.168.0.61 GET /v8/styles.css - 80 - 192.168.0.3<tel:80%20-%20192.168.0.3> Opera/9.80+(Macintosh;+Intel+Mac+OS+X+10.7.1;+U;+en)+Presto/2.9.168+Version /11.51 200 0 0 31 Do you have an idea? I don't understand where's the problem. Thanks for your help. Christophe -- John Helliwell

