KevinBlandy opened a new issue #3293:
URL: https://github.com/apache/rocketmq/issues/3293
I want to determine at the beginning of the program whether the MQ service
is working or not.
I constructed an error address message and called the `start()` method, but
no exception was thrown and there was no hint. Everything seems to be fine.
```java
import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.client.producer.DefaultMQProducer;
public class MQTest {
public static void main(String[] args) throws MQClientException {
DefaultMQProducer producer = new DefaultMQProducer("default");
producer.setNamesrvAddr("undefinde:-1");
producer.start();
}
}
```
I didn't find any other methods like `ping()`, `createConn()` either.
The current solution is to try to send a message to a Topic that does not
exist and then determine if the service is available based on the exception
message.
But this doesn't seem elegant enough, is there a good solution?
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