@After
    public void stop() {
        try {
            server.stop();
            Thread.sleep(100);
        } catch (InterruptedException e) {
            logger.error("Stop server failed!", e);
        }
    }
test async send back exception

@author welkin.xu
src/test/java/com/alipay/remoting/rpc/exception/BasicUsage_AsyncProcessor_ExceptionV2_Test.java