AuthorizationPrefilter.php

<?php
 
namespace Bitrix\Im\V2\Controller\Filter;
 
use Bitrix\Main\Engine\ActionFilter\Base;
use Bitrix\Main\Event;
 
class AuthorizationPrefilter extends Base
{
    public function onBeforeAction(Event $event)
    {
        global $USER;
        if(!$USER->IsAuthorized())
        {
            $USER->LoginByCookies();
        }
    }
}