优化通道同步添加对SN的判断，精简代码

648540858

2022-04-17 0dc1807f621ce9077b58dff40ad4485c9a3d6c40

 src/main/java/com/genersoft/iot/vmp/gb28181/task/ISubscribeTask.java

@@ -1,5 +1,9 @@
package com.genersoft.iot.vmp.gb28181.task;

import javax.sip.DialogState;

public interface ISubscribeTask extends Runnable{
    void stop();

    DialogState getDialogState();
}