CMS Version: 4.2.3
Description of the issue:
When trying to use an ICS feed published from Office 365 Outlook Calendar, the widget failed to fetch the data. The same ICS URL downloaded fine via a browser or manual curl request, but the CMS log showed errors similar to:
Unable to download feed
HTTP 302 → 500 (OwaBasicUnsupportedException)
The problem only occurred with Office 365 ICS URLs. Google Calendar ICS links worked normally.
Root cause:
Office 365 expects requests to look like those from a modern browser. The default Guzzle client in Xibo did not send the required headers or forced protocols, causing the server to redirect to an unsupported page and return a 500 error.
Solution / Fix:
We modified the downloadIcs method in IcsProvider.php to:
- Force HTTP/1.1 instead of HTTP/2
- Force IPv4 resolution to avoid IPv6 routing issues
- Add standard browser-like headers (e.g.,
User-Agent,Accept,Referer,Accept-Language) - Enable gzip/deflate support with
CURLOPT_ENCODING
After applying these changes, the Office 365 ICS feeds started downloading correctly and the widget now parses events without issues.
Recommendation:
Include these settings in the default IcsProvider implementation so that Outlook/Office 365 ICS feeds are supported out-of-the-box.
here’s my paliative solution:
\lib\widget\IcsProvider.php
Update in downloadIcs function:
/**
* @throws \Xibo\Support\Exception\GeneralException
*/
private function downloadIcs(string $uri, DataProviderInterface $dataProvider): string
{
// See if we have this ICS cached already.
$cache = $dataProvider->getPool()->getItem('/widget/' . $dataProvider->getDataType() . '/' . md5($uri));
$ics = $cache->get();
if ($cache->isMiss() || $ics === null) {
$this->getLog()->debug('downloadIcs: cache miss');
// Opções de request que tornam o cliente "compatível" com o Outlook
$requestOptions = [
'timeout' => 20,
'version' => 1.1, // força HTTP/1.1
'allow_redirects'=> [
'max' => 10,
'strict' => false,
'referer' => true,
'track_redirects'=> true,
],
'http_errors' => false, // não lançar exceção automática em 4xx/5xx
'headers' => [
'User-Agent' => 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) ' .
'AppleWebKit/537.36 (KHTML, like Gecko) ' .
'Chrome/124.0.0.0 Safari/537.36',
'Accept' => 'text/calendar, text/plain, */*',
'Accept-Language' => 'en-US,en;q=0.9,pt-BR;q=0.8',
'Connection' => 'keep-alive',
'Referer' => 'https://outlook.office365.com/',
],
// Força IPv4 e aceita gzip/deflate no handler cURL do Guzzle
'curl' => [
CURLOPT_IPRESOLVE => CURL_IPRESOLVE_V4,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_ENCODING => '', // habilita gzip/deflate
],
// Mantenha verify=true (ou aponte para seu CA bundle, se necessário)
'verify' => true,
];
try {
$client = $dataProvider->getGuzzleClient($requestOptions);
$response = $client->get($uri);
$status = $response->getStatusCode();
$ctype = $response->getHeaderLine('Content-Type');
// Alguns tenants do O365 respondem 302->500 se o client não parecer navegador.
// Com as opções acima, esperamos 200 + text/calendar.
if ($status !== 200 || stripos($ctype, 'text/calendar') === false) {
$this->getLog()->error(sprintf(
'downloadIcs: Unexpected response. HTTP=%s CT=%s Redirects=%s',
$status,
$ctype,
implode(' | ', $response->getHeader('X-Guzzle-Redirect-History') ?: [])
));
throw new ConfigurationException(__('Unable to download feed'));
}
$ics = $response->getBody()->getContents();
// Cache com TTL configurável (em minutos -> segundos)
$cache->set($ics);
$cache->expiresAfter($dataProvider->getSetting('cachePeriod', 1440) * 60);
$dataProvider->getPool()->saveDeferred($cache);
} catch (RequestException $e) {
$this->getLog()->error('downloadIcs: Unable to get feed: ' . $e->getMessage());
$this->getLog()->debug($e->getTraceAsString());
throw new ConfigurationException(__('Unable to download feed'));
}
} else {
$this->getLog()->debug('downloadIcs: cache hit');
}
return $ics;
}
RESULT:
Everythin ok now, both on Google ICS or Office 365
