XFF replace iRule help

[dinodell4477]

How would I go about replacing the X-Forwarded-For header with a value from another header such as "Real-Client-IP" for example. Something like the below is what i'm statrting with but this obviously isnt working. 

when HTTP_REQUEST {
HTTP::header replace X-Forwarded-For HTTP::header value Real-Client-IP [HTTP::header value X-Forwarded-For]
}

Thanks in advance!

[Dario_Garrido · Accepted solution]

Hello Tetimmons.

Try this:

when HTTP_REQUEST {
   HTTP::header replace X-Forwarded-For [HTTP::header value Real-Client-IP]
   HTTP::header remove Real-Client-IP
}

[dinodell4477]

Thanks all!