xujianhai666 commented on a change in pull request #97: fix remote timeout unit 
and add shutdown method
URL: https://github.com/apache/rocketmq-client-go/pull/97#discussion_r300927067
 
 

 ##########
 File path: internal/kernel/client.go
 ##########
 @@ -124,45 +127,70 @@ func (c *RMQClient) Start() {
                go func() {
                        // delay
                        time.Sleep(50 * time.Millisecond)
+                       c.UpdateTopicRouteInfo()
                        for {
-                               c.UpdateTopicRouteInfo()
-                               time.Sleep(_PullNameServerInterval)
+                               select {
+                               case <-ctx.Done():
+                                       return
+                               case <-time.Tick(_PullNameServerInterval):
+                                       c.UpdateTopicRouteInfo()
+                               }
                        }
                }()
 
                // TODO cleanOfflineBroker & sendHeartbeatToAllBrokerWithLock
                go func() {
+                       cleanOfflineBroker()
+                       c.SendHeartbeatToAllBrokerWithLock()
                        for {
-                               cleanOfflineBroker()
-                               c.SendHeartbeatToAllBrokerWithLock()
-                               time.Sleep(_HeartbeatBrokerInterval)
+                               select {
+                               case <-ctx.Done():
+                                       return
+                               case <-time.Tick(_HeartbeatBrokerInterval):
+                                       cleanOfflineBroker()
+                                       c.SendHeartbeatToAllBrokerWithLock()
+                               }
                        }
                }()
 
                // schedule persist offset
                go func() {
-                       //time.Sleep(10 * time.Second)
+                       c.consumerMap.Range(func(key, value interface{}) bool {
+                               consumer := value.(InnerConsumer)
+                               consumer.PersistConsumerOffset()
+                               return true
+                       })
                        for {
-                               c.consumerMap.Range(func(key, value 
interface{}) bool {
-                                       consumer := value.(InnerConsumer)
-                                       consumer.PersistConsumerOffset()
-                                       return true
-                               })
-                               time.Sleep(_PersistOffset)
+                               select {
+                               case <-ctx.Done():
+                                       return
+                               case <-time.Tick(_PersistOffset):
+                                       c.consumerMap.Range(func(key, value 
interface{}) bool {
+                                               consumer := 
value.(InnerConsumer)
+                                               consumer.PersistConsumerOffset()
+                                               return true
+                                       })
+                               }
                        }
                }()
 
                go func() {
+                       c.RebalanceImmediately()
                        for {
-                               c.RebalanceImmediately()
-                               time.Sleep(_RebalanceInterval)
+                               select {
+                               case <-ctx.Done():
+                                       return
+                               case <-time.Tick(_RebalanceInterval):
+                                       c.RebalanceImmediately()
+                               }
                        }
                }()
        })
 }
 
 func (c *RMQClient) Shutdown() {
-       // TODO
 
 Review comment:
   it seems that if I shutdown the RMQClient, I remain send message by 
RMQClient.

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