Migrating Redirects from CSS with Irule

If you have more than a couple of cases to check, you could use the switch command:

when HTTP_REQUEST {
   switch -glob [string tolower [HTTP::host]] {
      *example.com -
      *site1.example.net -
      *site2* {
         HTTP::redirect "http://host1.example.com"
      }
      *site3* -
      *site4* {
         HTTP::redirect "http://host2.example.com"
      }
      default {
         HTTP::redirect "http://host3.example.com"
      }
   }
}

You can check the iRules wiki page for switch for details on this (Click here)

If you want to debug this, you could add log statements and check the /var/log/ltm log file. Here's an example for logging:

log local0. "client: [IP::client_addr] matched first switch case"

Aaron