创建nkAgent只需要一次

cctp-atu/atu-upper-computer/src/main/java/net/northking/cctp/upperComputer/deviceManager/thread/IosDeviceInitThread.java

@@ -64,9 +64,15 @@ public abstract class IosDeviceInitThread extends Thread {
         }
         logger.debug("设置设备【{}】的nkAgent掉线之后的监听器................", phone.getUdid());
         nkAgent.setOnDisconnectListener(() -> {
-            logger.warn("设备【{}】的nkAgent失效了，需要重新创建...........", phone.getUdid());
-            IOSDeviceManager.getInstance().getIosInitThread(phone.getUdid()).createNKAgent();
-            logger.warn("设备【{}】的nkAgent重新创建完成...........", phone.getUdid());
+            synchronized (nkAgent) {
+                if (!nkAgent.getStatus()) {
+                    logger.warn("设备【{}】的nkAgent失效了，需要重新创建...........", phone.getUdid());
+                    IOSDeviceManager.getInstance().getIosInitThread(phone.getUdid()).createNKAgent();
+                    logger.warn("设备【{}】的nkAgent重新创建完成...........", phone.getUdid());
+                } else {
+                    logger.warn("设备【{}】的nkAgent失效了，但是已经创建好了，不再创建了...........", phone.getUdid());
+                }
+            }
         });
         logger.debug("设备【{}】的nkAgent连接完毕................", phone.getUdid());
     }