For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

Beatty754_27919's avatar
Beatty754_27919
Icon for Nimbostratus rankNimbostratus
Jul 15, 2016

URI Rewrite based on cookie value

Hey Devcentral,

 

I'm trying to come up with the best way to modify a URI based on a cookie value. I have control over the cookie value and would prefer to just do a simple string replace and replace part of the uri with whatever the value of the cookie is. I have some semi-psuedo code below that illustrates this a bit better.

 

The value of the cookie would be "-A2" or "A2" or something similar we could do an easy string replace on, this way if we decide to add A3 and A4 we don't need to update the Irule, just add the extra environments themselves.

 

What my question boils down to is: Is there a way to just set the cookie value to a variable and then reuse that in the irule script

 

http://abc.com to http://abc-a2.com

 

when HTTP_REQUEST { if { [string tolower [HTTP::uri]] starts_with "abc.com" } { HTTP::uri [string map -nocase {"abc.com" "abc-[cookievalue].com"} [HTTP::uri]] } }

 

Any help or guidance would be greatly appreciated.

 

Thanks, Beatty754

 

devops
iRules

1 Reply

  • Vijay_E's avatar
    Vijay_E
    Icon for Cirrus rankCirrus
    Jul 15, 2016

    I am not sure if it will work but I think you are looking for something like this:

    when HTTP_REQUEST { 
    if { [string tolower [HTTP::uri]] starts_with "abc.com" } { 
        HTTP::uri [string map -nocase {"abc.com" "abc-[HTTP::cookie value cookie-name].com"} [HTTP::uri]] 
    } 
}