Forum Discussion

MihirP1129's avatar
MihirP1129
Icon for Nimbostratus rankNimbostratus
Jul 03, 2019
Solved

iRule to add www without changing URL

Hello F5 community,   Is there a way to add www in front of the URL while keeping the URL intact? For example:   https://abc.com/testfolder/blahblahblah changed to https://WWW.abc.com/testfolder/...
application delivery
BIG-IP
  • Stanislas_Piro2's avatar
    Stanislas_Piro2
    Jul 05, 2019

    Do you want to change Host header sent from the client in server side connection or do you want to redirect the client to  https://WWW.abc.com/testfolder/blahblahblah

     

    to redirect the client, use following code

     

    when HTTP_REQUEST {
    if {[HTTP::host] eq "abc.com"} {
        HTTP::redirect "https://www.abc.com[HTTP::uri]"
    }
}

     

  • MihirP1129's avatar
    MihirP1129
    Icon for Nimbostratus rankNimbostratus
    Jul 09, 2019

    The order in which the irule was placed on the F5 was the issue. After moving the irule to the bottom of the list, it worked! Thanks everyone!

    • Lee_Sutcliffe's avatar
      Lee_Sutcliffe
      Icon for Nacreous rankNacreous
      Jul 09, 2019

      If you have more than one iRule on a VIP I would seriously recommend using priorities on your events. This way you can control the ordering of your events rather than relating on list ordering which is not ideal.

      https://devcentral.f5.com/s/articles/the101-irules-101-events-amp-priorities

      when HTTP_REQUEST priority 100 {
    #this event will fire SECOND 
}
 
when HTTP_REQUEST priority 10 {
    #this event will fire FIRST 
}
 
    • MihirP1129's avatar
      MihirP1129
      Icon for Nimbostratus rankNimbostratus
      Jul 09, 2019

      Good to know for future reference. Thanks Lee.

    • MihirP1129's avatar
      MihirP1129
      Icon for Nimbostratus rankNimbostratus
      Jul 09, 2019

      @Lee,

       

      We typically have about 5 standard irules for all sites, so would the priority irule look something like this? Start from priority 1 (apply rule first) and works it way up in order?

       

      # is_secure_header

       

      when HTTP_REQUEST priority 3 {

       HTTP::header insert IsSecureConnection True

      }

       

      # x-Frame-Options

       

      when HTTP_RESPONSE priority 2 {

          HTTP::header insert X-FRAME-OPTIONS "SAMEORIGIN"

      }

       

      # Cookie_set_HttpOnly_Secure_SameSiteLax

       

      when HTTP_RESPONSE priority 1 {

             set unsafe_cookie_headers [HTTP::header values "Set-Cookie"]

                 HTTP::header remove "Set-Cookie"

       

             foreach set_cookie_header $unsafe_cookie_headers {

                 HTTP::header insert "Set-Cookie" "${set_cookie_header}; Secure; HttpOnly; SameSite=Lax"

             }

      }