lwclover commented on a change in pull request #3555:
URL: https://github.com/apache/rocketmq/pull/3555#discussion_r775858675



##########
File path: 
client/src/main/java/org/apache/rocketmq/client/impl/MQClientAPIImpl.java
##########
@@ -523,65 +523,72 @@ private void sendMessageAsync(
         final DefaultMQProducerImpl producer
     ) throws InterruptedException, RemotingException {
         final long beginStartTime = System.currentTimeMillis();
-        this.remotingClient.invokeAsync(addr, request, timeoutMillis, new 
InvokeCallback() {
-            @Override
-            public void operationComplete(ResponseFuture responseFuture) {
-                long cost = System.currentTimeMillis() - beginStartTime;
-                RemotingCommand response = responseFuture.getResponseCommand();
-                if (null == sendCallback && response != null) {
-
-                    try {
-                        SendResult sendResult = 
MQClientAPIImpl.this.processSendResponse(brokerName, msg, response, addr);
-                        if (context != null && sendResult != null) {
-                            context.setSendResult(sendResult);
-                            
context.getProducer().executeSendMessageHookAfter(context);
-                        }
-                    } catch (Throwable e) {
-                    }
-
-                    producer.updateFaultItem(brokerName, 
System.currentTimeMillis() - responseFuture.getBeginTimestamp(), false);
-                    return;
-                }
-
-                if (response != null) {
-                    try {
-                        SendResult sendResult = 
MQClientAPIImpl.this.processSendResponse(brokerName, msg, response, addr);
-                        assert sendResult != null;
-                        if (context != null) {
-                            context.setSendResult(sendResult);
-                            
context.getProducer().executeSendMessageHookAfter(context);
-                        }
+        try {
+            this.remotingClient.invokeAsync(addr, request, timeoutMillis, new 
InvokeCallback() {
+                @Override
+                public void operationComplete(ResponseFuture responseFuture) {
+                    long cost = System.currentTimeMillis() - beginStartTime;
+                    RemotingCommand response = 
responseFuture.getResponseCommand();
+                    if (null == sendCallback && response != null) {
 
                         try {
-                            sendCallback.onSuccess(sendResult);
+                            SendResult sendResult = 
MQClientAPIImpl.this.processSendResponse(brokerName, msg, response, addr);
+                            if (context != null && sendResult != null) {
+                                context.setSendResult(sendResult);
+                                
context.getProducer().executeSendMessageHookAfter(context);
+                            }
                         } catch (Throwable e) {
                         }
 
                         producer.updateFaultItem(brokerName, 
System.currentTimeMillis() - responseFuture.getBeginTimestamp(), false);
-                    } catch (Exception e) {
-                        producer.updateFaultItem(brokerName, 
System.currentTimeMillis() - responseFuture.getBeginTimestamp(), true);
-                        onExceptionImpl(brokerName, msg, timeoutMillis - cost, 
request, sendCallback, topicPublishInfo, instance,
-                            retryTimesWhenSendFailed, times, e, context, 
false, producer);
+                        return;
                     }
-                } else {
-                    producer.updateFaultItem(brokerName, 
System.currentTimeMillis() - responseFuture.getBeginTimestamp(), true);
-                    if (!responseFuture.isSendRequestOK()) {
-                        MQClientException ex = new MQClientException("send 
request failed", responseFuture.getCause());
-                        onExceptionImpl(brokerName, msg, timeoutMillis - cost, 
request, sendCallback, topicPublishInfo, instance,
-                            retryTimesWhenSendFailed, times, ex, context, 
true, producer);
-                    } else if (responseFuture.isTimeout()) {
-                        MQClientException ex = new MQClientException("wait 
response timeout " + responseFuture.getTimeoutMillis() + "ms",
-                            responseFuture.getCause());
-                        onExceptionImpl(brokerName, msg, timeoutMillis - cost, 
request, sendCallback, topicPublishInfo, instance,
-                            retryTimesWhenSendFailed, times, ex, context, 
true, producer);
+
+                    if (response != null) {
+                        try {
+                            SendResult sendResult = 
MQClientAPIImpl.this.processSendResponse(brokerName, msg, response, addr);
+                            assert sendResult != null;
+                            if (context != null) {
+                                context.setSendResult(sendResult);
+                                
context.getProducer().executeSendMessageHookAfter(context);
+                            }
+
+                            try {
+                                sendCallback.onSuccess(sendResult);
+                            } catch (Throwable e) {
+                            }
+
+                            producer.updateFaultItem(brokerName, 
System.currentTimeMillis() - responseFuture.getBeginTimestamp(), false);
+                        } catch (Exception e) {
+                            producer.updateFaultItem(brokerName, 
System.currentTimeMillis() - responseFuture.getBeginTimestamp(), true);
+                            onExceptionImpl(brokerName, msg, timeoutMillis - 
cost, request, sendCallback, topicPublishInfo, instance,
+                                retryTimesWhenSendFailed, times, e, context, 
false, producer);
+                        }
                     } else {
-                        MQClientException ex = new MQClientException("unknow 
reseaon", responseFuture.getCause());
-                        onExceptionImpl(brokerName, msg, timeoutMillis - cost, 
request, sendCallback, topicPublishInfo, instance,
-                            retryTimesWhenSendFailed, times, ex, context, 
true, producer);
+                        producer.updateFaultItem(brokerName, 
System.currentTimeMillis() - responseFuture.getBeginTimestamp(), true);
+                        if (!responseFuture.isSendRequestOK()) {
+                            MQClientException ex = new MQClientException("send 
request failed", responseFuture.getCause());
+                            onExceptionImpl(brokerName, msg, timeoutMillis - 
cost, request, sendCallback, topicPublishInfo, instance,
+                                retryTimesWhenSendFailed, times, ex, context, 
true, producer);
+                        } else if (responseFuture.isTimeout()) {
+                            MQClientException ex = new MQClientException("wait 
response timeout " + responseFuture.getTimeoutMillis() + "ms",
+                                responseFuture.getCause());
+                            onExceptionImpl(brokerName, msg, timeoutMillis - 
cost, request, sendCallback, topicPublishInfo, instance,
+                                retryTimesWhenSendFailed, times, ex, context, 
true, producer);
+                        } else {
+                            MQClientException ex = new 
MQClientException("unknow reseaon", responseFuture.getCause());
+                            onExceptionImpl(brokerName, msg, timeoutMillis - 
cost, request, sendCallback, topicPublishInfo, instance,
+                                retryTimesWhenSendFailed, times, ex, context, 
true, producer);
+                        }
                     }
                 }
-            }
-        });
+            });
+        } catch (RemotingConnectException ex) {

Review comment:
       done




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