Forum Discussion

bigipjr28_13978's avatar
bigipjr28_13978
Icon for Nimbostratus rankNimbostratus
Jan 22, 2016

irule that clears and then sets header for multiple vips

Hey Guy,   looking for an iRule that clears and sets the HTTP Host header to the appropriate value for all VIPs on LTM.   Here is what I was thinking below:   when HTTP_REQUEST { ...
application delivery
iRules
LTM
Kai_Wilke's avatar
Kai_Wilke
Icon for MVP rankMVP
Jan 26, 2016

Hi bigipjr28,

 

a sample code would look like this...

 

when HTTP_REQUEST {
    if { [set temp(virtual) [URI::basename [virtual name]]] starts_with "DC_" } then {
        if { [set temp(host) [class match -value $temp(virtual) equals DG_VIRTUAL_2_HOST]] ne "" } then {
            HTTP::header remove Host
            HTTP::header insert Host $temp(host)
        } else {

             The Datagroup doesn't have a match. 
             Add additional code here to handle those exeptions or simply let the requests pass. 

        }
    } else {
        HTTP::header remove Host
        HTTP::header insert Host $temp(virtual) 
    }
    unset -nocomplain temp
}

Note: I haven't had the chance to test the actual code. So please bear with me if minor syntax errors (e.g. missing braces, etc.) are left... 😉

 

Cheers, Kai