Forum Discussion

Frederic_Zeller's avatar
Frederic_Zeller
Icon for Nimbostratus rankNimbostratus
May 07, 2008

Peristence on X-Forwarded-For

Hi.     Using Universal Persitence, it's quite easy to persist on a part of the URI. Many example can be found.     Like :     when HTTP_REQUEST {   persist uie [findstr [HTTP::...
application delivery
dev
devops
iRules
hooleylist's avatar
hooleylist
Icon for Cirrostratus rankCirrostratus
May 07, 2008
Hi Fred,

 

 

You can replace '[findstr [HTTP::uri] "user-" 5 "&"]' with '[HTTP::header value X-Forwarded-Fo]'r. However, there might be multiple XFF header values in client requests. The HTTP::header command will return the last value. Proxies aren't required to insert an XFF header, so you wouldn't be guaranteed to get a valid value to persist off of. If the proxy in your scenario does insert an XFF header, the HTTP::header command should work for persisting off of the value.

 

 

Aaron