From 9f99b8a26a19434523c8e4b3358b7c99b915e828 Mon Sep 17 00:00:00 2001
From: fyf <11621@LAPTOP-04QQU0AO>
Date: Mon, 12 Jun 2023 11:35:36 +0800
Subject: [PATCH] =?UTF-8?q?=E7=8E=B0=E5=9C=BA=E6=94=B9=E5=8A=A8WWW?=
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---
 .../java/com/example/bpa/helper/MQTT.java     | 69 ++++++++++++++++++-
 1 file changed, 68 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/com/example/bpa/helper/MQTT.java b/app/src/main/java/com/example/bpa/helper/MQTT.java
index 5c3d652..dd20ae7 100644
--- a/app/src/main/java/com/example/bpa/helper/MQTT.java
+++ b/app/src/main/java/com/example/bpa/helper/MQTT.java
@@ -18,6 +18,10 @@ import org.eclipse.paho.client.mqttv3.MqttException;
 import org.eclipse.paho.client.mqttv3.MqttMessage;
 import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
 
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.LineNumberReader;
+
 /**
  * mqtt帮助类
  */
@@ -105,9 +109,72 @@ public class MQTT {
 
             }
         });
-        ConnMqttBroken(true);
+
+        new Thread(new Runnable() {
+            @Override
+            public void run() {
+                try {
+                    boolean status = false;
+                    while (!status) {
+                        try {
+                            //status为0则代表通，为1则代表不通。
+                            status =ping2(Ip,1,1);
+                            Thread.sleep(1000);
+                        } catch (InterruptedException e) {
+                            MessageLog.ShowInfo("MQTT " + Ip + " 网络验证失败");
+                        } catch (Exception e) {
+                            MessageLog.ShowInfo("MQTT " + Ip+ " 网络验证失败");
+                        }
+                    }
+                    ConnMqttBroken(true);
+                } catch (Exception e) {
+
+                }
+            }
+        }).start();
+
     }
+    /**
+     * Ping PLC地址是否通畅
+     * @param address
+     * @param pingTimes  ping的次数
+     * @param timeOut  超时时间 10
+     * @return
+     */
+    public static boolean ping2(String address, int pingTimes, int timeOut) {
+        Process process = null;
+        try {
+            process = Runtime.getRuntime().exec( "ping "  + "-c " + pingTimes + " -w " + timeOut+ " "+address);
+            InputStreamReader r = new InputStreamReader(process.getInputStream());
+
+            LineNumberReader returnData = new LineNumberReader(r);
+
+            String returnMsg="";
+
+            String line = "";
 
+            while ((line = returnData.readLine()) != null) {
+
+                System.out.println(line);
+
+                returnMsg += line;
+
+            }
+
+            if(returnMsg.indexOf("100% packet loss")!=-1){
+                System.out.println("与 " +address +" 连接不畅通.");
+                return  false;
+            } else{
+
+                System.out.println("与 " +address +" 连接畅通.");
+                return true;
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return false;
+
+    }
     /**
      * 连接 或者断开MQTT
      * @param bloConn