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Carl_Gottlieb_1's avatar
Carl_Gottlieb_1
Icon for Nimbostratus rankNimbostratus
Apr 24, 2007

irule priority with asm - version 9.2.4

On version 9.2.4 I had a virtual server, pool attached along with an irule as below, to redirect balnk uri's:

 

 

when HTTP_REQUEST {

 

if { [string length [HTTP::uri]] <= 1 } {

 

HTTP::redirect "https://www.domain.com/home"

 

}

 

}

 

 

This works fine. If I remove the default pool, and add an ASM class containing the pool to the policy, ASM works but the irule doesn't trigger.

 

 

Is there any way I can get the above rule to happen first?

 

 

Many thanks

 

Carl
application delivery
dev
devops
iRules
  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    Apr 24, 2007
    SOL7041 has an example of how to handle scenarios in iRules where you want to prevent the request from going to ASM.

    https://tech.f5.com/home/solutions/sol7041.html

    Click here

    
when HTTP_REQUEST {
  set asm_bypass 0
  if { [HTTP::uri] starts_with "/mydir" } {
    HTTP::redirect "http://www.mysite.com/myredirect"
    set asm_bypass 1
  }
}

    You could also tweak your rule slightly, as a URI will never be 0 length. If it's 1 character, it must be "/".

    
when HTTP_REQUEST {
    by default, don't bypass ASM
   set asm_bypass 0
   if { [HTTP::uri] eq "/" } {
       request was for / so send a redirect and disable ASM for this request
      HTTP::redirect "http://www.domain.com/home"
      set asm_bypass 1
   }
}

    Aaron