/**
* Receives data from the server.
*
* Receives data from the server as a string.
*
* @param int $length The number of bytes to receive.
* @param string $what Descriptive string about what is being received
* (used in exception messages).
*
* @return string The received content.
*/
public function receive($length, $what = 'data')
{
if (false === ($previousState = $this->lock(self::DIRECTION_RECEIVE)) && $this->persist) {
throw $this->createException('Unable to obtain receiving lock', 9);
}
try {
$result = parent::receive($length, $what);
} catch (E $e) {
$this->lock($previousState, true);
throw $e;
}
$this->lock($previousState, true);
return $result;
}
