public function getRequestByOffset( $offset ) {
		$reqs = glob($this->tmpDir . DIRECTORY_SEPARATOR . 'request.*');
		natsort($reqs);

		$item = array_slice($reqs, $offset, 1);
		if( !$item ) {
			return null;
		}

		$path    = reset($item);
		$content = file_get_contents($path);
		$data    = @unserialize($content);
		if( $data instanceof RequestInfo ) {
			return $data;
		}

		return null;
	}