public function getLastRequest() {
		$path = $this->tmpDir . DIRECTORY_SEPARATOR . self::LAST_REQUEST_FILE;
		if( file_exists($path) ) {
			$content = file_get_contents($path);
			$data    = @unserialize($content);
			if( $data instanceof RequestInfo ) {
				return $data;
			}
		}

		return null;
	}