Polaris' connect did not automatically stop when spring boot application has stopped

[Jansora]

Describe the bug
When i startup multi spring apps with same port (such as 23740). later started spring apps will run failed and should stopp normally.
when spring app failed. polaris 's connect blocked applications stopping.

check logs

2023-06-06 17:00:31.564  INFO 97953 --- [           main] o.s.b.a.e.web.EndpointLinksResolver      : Exposing 2 endpoint(s) beneath base path '/actuator'
2023-06-06 17:00:31.613  WARN 97953 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Failed to start bean 'webServerStartStop'; nested exception is org.springframework.boot.web.server.PortInUseException: Port 23740 is already in use
2023-06-06 17:00:31.616  INFO 97953 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2023-06-06 17:00:31.626  INFO 97953 --- [           main] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2023-06-06 17:00:31.632  INFO 97953 --- [           main] c.t.p.p.connector.grpc.GrpcConnector     : start to destroy connector grpc
2023-06-06 17:00:31.643 ERROR 97953 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

Web server failed to start. Port 23740 was already in use.

Action:

Identify and stop the process that's listening on port 23740 or configure this application to listen on another port.

2023-06-06 17:00:32.119  INFO 97953 --- [n-LongPolling-1] .c.i.DefaultConfigFileLongPollingService : [Config] do long polling. config file size = 16, delay time = 0
2023-06-06 17:01:02.882  INFO 97953 --- [n-LongPolling-1] .c.i.DefaultConfigFileLongPollingService : [Config] long polling result: data no change
2023-06-06 17:01:02.883  INFO 97953 --- [n-LongPolling-1] .c.i.DefaultConfigFileLongPollingService : [Config] do long polling. config file size = 16, delay time = 0
2023-06-06 17:01:33.591  INFO 97953 --- [n-LongPolling-1] .c.i.DefaultConfigFileLongPollingService : [Config] long polling result: data no change

To Reproduce
needn't

Expected behavior
spring app stopped normal when run failed.

Environment

• Version: 1.6.0-2021.0.3
• OS: MAC OS 13.3.1 (22E261)

Additional context
Add any other context about the problem here.

[Jansora]

这算是个 bug 吗

[SkyeBeFreeman]

不算BUG，因为动态配置还在正常运行。

[SkyeBeFreeman]

看了一下，这里可以搞一个优化，监听spring boot事件，如果没有成功启动，则终止远端配置的拉取线程。

[shuiqingliu]

申请认领该 issue