/**
* This function ensures that a response was set on a transaction. If one
* was not set, then the request is retried if possible. This error
* typically means you are sending a payload, curl encountered a
* "Connection died, retrying a fresh connect" error, tried to rewind the
* stream, and then encountered a "necessary data rewind wasn't possible"
* error, causing the request to be sent through curl_multi_info_read()
* without an error status.
*
* @param TransactionInterface $transaction
* @param BatchContext $context
*
* @return bool Returns true if it's OK, and false if it failed.
* @throws \GuzzleHttp\Exception\RequestException If it failed and cannot
* recover.
*/
private function validateResponseWasSet(TransactionInterface $transaction, BatchContext $context)
{
if ($transaction->getResponse()) {
return true;
}
$body = $transaction->getRequest()->getBody();
if (!$body) {
// This is weird and should probably never happen.
RequestEvents::emitError($transaction, new RequestException('No response was received for a request with no body. This' . ' could mean that you are saturating your network.', $transaction->getRequest()));
} elseif (!$body->isSeekable() || !$body->seek(0)) {
// Nothing we can do with this. Sorry!
RequestEvents::emitError($transaction, new RequestException('The connection was unexpectedly closed. The request would' . ' have been retried, but attempting to rewind the' . ' request body failed. Consider wrapping your request' . ' body in a CachingStream decorator to work around this' . ' issue if necessary.', $transaction->getRequest()));
} else {
$this->retryFailedConnection($transaction, $context);
}
return false;
}
private function handleError(TransactionInterface $transaction, $info, $handle)
{
$error = curl_error($handle);
$this->releaseEasyHandle($handle);
RequestEvents::emitError($transaction, new AdapterException("cURL error {$info['curl_result']}: {$error}"), $info);
}
private function isCurlException(TransactionInterface $transaction, array $curl, BatchContext $context, array $info)
{
if (CURLM_OK == $curl['result'] || CURLM_CALL_MULTI_PERFORM == $curl['result']) {
return false;
}
$request = $transaction->getRequest();
try {
// Send curl stats along if they are available
$stats = ['curl_result' => $curl['result']] + $info;
RequestEvents::emitError($transaction, new RequestException(sprintf('[curl] (#%s) %s [url] %s', $curl['result'], function_exists('curl_strerror') ? curl_strerror($curl['result']) : self::ERROR_STR, $request->getUrl()), $request), $stats);
} catch (RequestException $e) {
$this->throwException($e, $context);
}
return true;
}
