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Nick_Coelho_338's avatar
Nick_Coelho_338
Icon for Nimbostratus rankNimbostratus
Dec 21, 2006

else procedure undefined?

i have what I think is a simple iRule (i am a complete novice mind you). i can not get the else command to work. gives the following eror no matter what i do. sorry if i am just dense

 

 

01070151:3: Rule [iRule1] error:

 

line 32: [undefined procedure: else] [else]

 

 

 

_______________________________________________________________________

 

iRule:

 

 

when HTTP_REQUEST {

 

switch -glob [string tolower [HTTP::uri]] {

 

"/affiliates" -

 

"/endpages" -

 

"/friends" -

 

"/images" -

 

"/img" -

 

"/inc" -

 

"/includes" -

 

"/maintenance" -

 

"/outage" -

 

"/popup" -

 

"/referral" -

 

"/sc" -

 

"/servicestudy" -

 

"/sitemap" -

 

"/thrivent" -

 

"/upgrade" -

 

"/userControls" {

 

pool Pool1

 

}

 

}

 

else

 

{HTTP::redirect "http://blahblah.com"}

 

}
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  • Deb_Allen_18's avatar
    Deb_Allen_18
    Historic F5 Account
    Dec 21, 2006
    In most tcl implementations both braces need to be on the same line with the "else", since the "else" is actually part of the "if" command.

     

     

    In F5's tcl implementation, the "else" has to be on the same line as the leading brace, but the trailing brace may be on the next line.

     

     

    Standard tcl syntax:
    if { condition }{
  code
} else {
  code
}
    Alternate F5 syntax:
    if { condition }{
  code
} else 
{
  code
}
    And unless your URIs consist only of the specified directories with no trailing path or filename, you will also need to wildcard your switch patterns to get the expected matches:
    when HTTP_REQUEST {
  switch -glob [string tolower [HTTP::uri]] {
    "/affiliates*" -
    "/endpages*" -
    "/friends*" -
...
    HTH

     

    /deb
  • Joe_Pruitt's avatar
    Joe_Pruitt
    Dec 21, 2006
    If what you were trying to do with the else is to provide a "default" clause for the switch statement (ie. everything that doesn't match one of your previous comparisons), then you can make use of the built-in "default" keyword in the switch statement. "else" is part of the "if" clause, not switch.

    Oh, and Deb is right that you'll probably want wildcards if you want your comparison to be like the "starts_with" operator.

    when HTTP_REQUEST {
  switch -glob [string tolower [HTTP::uri]] {
    "/affiliates*" -
    "/endpages*" -
    "/friends*" -
    "/images*" -
    "/img*" -
    "/inc*" -
    "/includes*" -
    "/maintenance*" -
    "/outage*" -
    "/popup*" -
    "/referral*" -
    "/sc*" -
    "/servicestudy*" -
    "/sitemap*" -
    "/thrivent*" -
    "/upgrade*" -
    "/userControls*" {
      pool Pool1
    }
    default {
      HTTP::redirect "http://blahblah.com"
    }
  }
}

    -Joe