Forum Discussion

Doug_Jones_2417's avatar
Doug_Jones_2417
Icon for Nimbostratus rankNimbostratus
Aug 12, 2013

Using variables as the match expression on the switch command

I'm fairly certain the answer to this is no (though Tcl reference suggests it is allowed), but can the expression to match against on a switch command be defined as a variable. switch [HTTP::u...
application delivery
devops
iRules
Joe_Pruitt's avatar
Joe_Pruitt
Aug 13, 2013

You can do it, but it's kind of awkward. The issue is the surrounding "{" and "}" around the comparison strings that's causing the strings to be treated as literals. If you remove the enclosing curly braces and end each line with a continuation character, it will work. Something like this

switch -- [HTTP::uri] \
  "$matchpage1" {  
      ...
  } \
  "$matchpage2" {
     ...
  }

Check out the wiki switch topic for an example (at the bottom)

https://devcentral.f5.com/wiki/iRules.switch.ashx

Hope this helps...

-Joe