change content type by irule

When creating variables that you want to persist across multiple events, you'll need to access them in the global namespace (with the "::" prefix).

Here's an example:

when HTTP_REQUEST {
  set this_variable_is_local 1
  set ::this_variable_is_global 1
}
when HTTP_RESPONSE {
   This will fail as this_variable_is_local isn't defined in this scope
  if { [info exists this_variable_is_local] } {
    if { $this_variable_is_local == 1 } {
    }
  }
   This should succeed.
  if { [info exists ::this_variable_is_global] } {
    if { $::this_variable_is_global == 1 } {
      log local0. "Found this_variable_is_global"
    }
  }
}

Note, You should always use the "info exists" command before you access a variable that you are unsure exists to avoid runtime errors.

-Joe