Detect Geo Location With iRule and Redirect

try

when HTTP_REQUEST {

    if { [string tolower [HTTP::host]] equals "www.example.com" && [HTTP::path] eq "/" }{

        set client_ip [IP::client_addr]
        set country [string tolower [whereis $client_ip country]]

     switch $country {
            "us" -
            "uk" -
            "ca"  { 
                HTTP::redirect "https://example.com/${country}" 
                }
        }
    }
}