push.php

См. документацию.

<?php
// exit;
use Bitrix\Calendar\Sync\Managers\PushManager;
use Bitrix\Main\Loader;
 
define("NOT_CHECK_PERMISSIONS", true);
require_once($_SERVER['DOCUMENT_ROOT']."/bitrix/modules/main/include/prolog_before.php");
 
$allowedFields = array('HTTP_X_GOOG_CHANNEL_ID' => true, 'HTTP_X_GOOG_RESOURCE_ID' => true);
$fields = array_intersect_key($_SERVER, $allowedFields);
if (empty($fields))
{
    exit;
}
foreach ($fields as $field)
{
    if (!preg_match('/^([A-z\d\-=])+$/', $field))
    {
        exit;
    }
}
 
$channelId = $fields['HTTP_X_GOOG_CHANNEL_ID'];
$resourceId = $fields['HTTP_X_GOOG_RESOURCE_ID'];
 
Loader::includeModule('calendar');
Loader::includeModule('dav');
 
try
{
    (new PushManager())->handlePush($channelId, $resourceId);
}
catch (\Exception $e)
{}
 
\Bitrix\Main\Application::getInstance()->end();