Forum Discussion

Alex_Pintel's avatar
Alex_Pintel
Icon for Nimbostratus rankNimbostratus
Nov 22, 2022

iRule exclude URI

I am fairly new to iRules so any help greately appreciated. What is correct syntax to exclude URI "/abc/Web123/cde/forum123/ from receiving HTTP code 200 and the message "123456789"? Is the exclamat...
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  • Amine_Kadimi's avatar
    Amine_Kadimi
    Nov 23, 2022

    To negate starts_with I would use the not operator:

    https://clouddocs.f5.com/api/irules/not.html

    when HTTP_REQUEST {
  if { not ([HTTP::uri] starts_with "/abc") } {
     # do something ...
  } else {
     # do something else...
 }
}

    For excluding the exact path, you can go with  the "ne" operator

CA_Valli's avatar
CA_Valli
Icon for MVP rankMVP

Hello, if you're looking to exclude an exact match for a string, "ne" operator can be used as well.

One thing I noticed -- since this is an exact match, be careful with "string tolower" syntax as it will convert everything to lowercase, so you will never see Web123 -- it's gonna be web123 instead. 

I generally don't recommend converting paths to lowercase since it is case sensitive, try using this instead:  

if { [HTTP::path] ne "/abc/Web123/cde/forum123" }{ ... }

 

Alex_Pintel's avatar
Alex_Pintel
Icon for Nimbostratus rankNimbostratus
Nov 23, 2022

Thank you all for responding to my post. I have another question.

What would be right syntax if I need to use 2 URLs?

if { [HTTP::path] ne "/abc/Web123/cde/forum123" OR "/abc/Web123/cde/forum456"

Is the "OR" correct operator?

Thank you! 

  • Amine_Kadimi's avatar
    Amine_Kadimi
    Icon for MVP rankMVP
    Nov 24, 2022

    For the requested logic, you need the "and" operator between two tests:

    if { ([HTTP::path] ne "/abc/Web123/cde/forum123") and ([HTTP::path] ne "/abc/Web123/cde/forum456") }

     If you plan to add more paths in the future, then consider using a switch test