CodeIgniter Session spammed by bots

Maybe it is a simple solution where you have a blacklist in MY_Session.php:

Code:

<?php
class MY_Session extends CI_Session {

    public function __construct(array $params = array())
    {
        $CI =& get_instance();

        $blacklist = [
            '123.255.123.255',
            'MegaBot',
            'Whatever'
        ];

        foreach( $blacklist as $bot )
        {
            if(
                stripos( $_SERVER['HTTP_USER_AGENT'], $bot ) !== FALSE OR
                $CI->input->ip_address() == $bot
            )
            {
                return;
            }
        }

        parent::__construct($params);
    }
}

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