/**
* The method which both loadSingle and loadSingleStatic calls, and which is the "real" loading-function
* @param resource $curlHandler
* @param SplFileObject|null $historyFileObject The instance method loadSingle may pass its existing fileObject
* @param string $url Url to load, obviously
* @param array|null $formdata If null request is sent as GET, otherwise POST and with the postdata of this argument
* @param array $settings See parameter $settings of loadSingle()
* @param array $history See parameter $history of loadSingle()
* @return array ['content' string,'headers' array,'error' string|null,'errorCode']*/
private static function loadSingleReal($curlHandler, $historyFileObject, $url, $formdata, $settings, $history = null)
{
$numRetries = -1;
Hicurl::setCurlOptions($curlHandler, $url, $formdata, $settings);
$output = [];
//this is the array that will be returned
if ($historyFileObject || !empty($settings['history'])) {
//should we write history?
//see description of writeHistory() for explanation of the history-structure
$historyPage = ['formData' => $formdata, 'exchanges' => []];
if ($history) {
//add customData and name of the $history-parameter to $historyPage
$historyPage += array_intersect_key($history, array_flip(['customData', 'name']));
}
}
do {
if (++$numRetries) {
if ($numRetries == $settings['maxFruitlessRetries']) {
$content = $headers = null;
$output['error'] = $error;
break;
}
sleep($settings['fruitlessPassDelay']);
}
$content = curl_exec($curlHandler);
//do the actual request. assign response-content to $content
$headers = curl_getinfo($curlHandler);
//get the headers too
if ($headers['http_code'] == 0 && !empty($settings['tor'])) {
$output['errorCode'] = 1;
$output['error'] = "Unable to connect via tor-proxy.\nIs Tor installed and configured correctly?";
$content = $headers = null;
break;
}
$error = Hicurl::parseAndValidateResult($content, $headers, $settings, $output);
if (isset($historyPage)) {
//are we writing history-data? this var is only set if we are
$historyPage['exchanges'][] = ['content' => $content, 'headers' => $headers, 'error' => $error, 'errorCode' => 0];
}
} while ($error);
//keep looping until $error is false
if (isset($historyPage)) {
//should we write history?
Hicurl::writeHistory($historyFileObject, $historyPage, $settings, $history);
}
return $output += ['content' => $content, 'headers' => $headers, 'error' => false];
}
