- @startuml
- participant client
- participant connect
- participant logic
-
- client -> connect: 心跳包请求
- connect --> client: 心跳包响应
-
- client -> client: 等待一段时间
-
- client -> connect: 心跳包请求
- connect --> client: 心跳包响应
-
-
- connect -> connect: 连续n次没有收到,释放连接
- connect -> logic: 通知设备下线
- @enduml
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