网络出现故障后，RabbitMQ连接自动恢复

当网络接口出现故障后，RabbitMQ尝试恢复连接时出现问题 . 我创建与RMQ的连接并模拟网络接口失败（Centos中的 sudo ifdown enp0s3 ） .

请求心跳超时后，我收到UnknownHostException . 没关系，因为我没有/ etc / hosts RMQ地址 .

但是当我启动网络接口（ sudo ifup enp0s3 ）时，我会在网络接口出现故障后恢复 .

Java版本1.8.0_60 amqp-client：3.5.6

Code:

ConnectionFactory factory = new ConnectionFactory();
    Connection conn = null;
    Channel channel = null;

    factory.setUsername(USERNAME);
    factory.setPassword(PASSWORD);
    factory.setVirtualHost(VIRTUAL_HOST);
    factory.setHost(HOST);
    factory.setPort(PORT);
    factory.setRequestedHeartbeat(4);
    // auto-recovery
    factory.setAutomaticRecoveryEnabled(true);
    factory.setNetworkRecoveryInterval(5000);

    try {
        conn = factory.newConnection();
        channel = conn.createChannel();
    } catch (Exception e) {
        e.printStackTrace();
        return;
    }

    while (true) {
        try {
            Thread.sleep(5000);
            System.out.println(String.format("Connection is opened: %s", conn.isOpen()));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

Exception:

在连接恢复期间发现异常！ java.net.UnknownHostException：java.net.AbstractPlainSocketImpl.connect（AbstractPlainSocketImpl.java:184）中的rmq.dev，java.net.SocksSocketImpl.connect（SocksSocketImpl.java:392），java.net.Socket.connect（Socket . java：589）at com.rabbitmq.client.impl.FrameHandlerFactory.create（FrameHandlerFactory.java:32）at com.rabbitmq.client.impl.recovery.RecoveryAwareAMQConnectionFactory.newConnection（RecoveryAwareAMQConnectionFactory.java:34）at com.rabbitmq.client .impl.recovery.AutorecoveringConnection.recoverConnection（AutorecoveringConnection.java:476）at com.rabbitmq.client.impl.recovery.AutorecoveringConnection.beginAutomaticRecovery（AutorecoveringConnection.java:444）at com.rabbitmq.client.impl.recovery.AutorecoveringConnection.access $ com（AutorecoveringConnection.java:53）at com.rabbitmq.client.impl.recovery.AutorecoveringConnection $ 1.shutdownCompleted（AutorecoveringConnection.java:383）at com.rabbitmq.client.impl.ShutdownNotifierComponent.notifyListeners（ShutdownNotifierComponent.java:75）a t com.rabbitmq.client.impl.AMQConnection $ MainLoop.run（AMQConnection.java:576）at java.lang.Thread.run（Thread.java:745）连接打开：false，通道打开：false

有谁能够帮我？为什么Java在网络出现故障后无法解析主机名？