C++ QT 实时进行网络监测

//NetworkTester.h
#pragma once
#include <QtCore>
#include <QtNetwork>
class NetworkTester : public QObject
{
  Q_OBJECT
public:
  NetworkTester(QObject *parent = nullptr) : QObject(parent) { testNetworkStatus(); }
public slots:
  void testNetworkStatus()
  {
  QNetworkAccessManager *manager = new QNetworkAccessManager(this);
  QNetworkRequest request(QUrl("http://www.baidu.com/"));
  QNetworkReply *reply = manager->get(request);
  QObject::connect(reply, &QNetworkReply::finished, [this, reply, manager]() {
    bool status = false;
    if (reply->error() == QNetworkReply::NoError) {
    status = true;
    }
    emit networkStatusChanged(status);
    reply->deleteLater();
    manager->deleteLater();
  });
  }
signals:
  void networkStatusChanged(bool status);
};

//NetWorkCheck.h
#pragma once
#include <QtWidgets/QMainWindow>
#include "ui_NetWorkCheck.h"
#include "NetworkTester.h"
#include <QDebug>
#include <QTimer>
class NetWorkCheck : public QMainWindow
{
    Q_OBJECT
public:
    NetWorkCheck(QWidget *parent = nullptr);
    ~NetWorkCheck();
private:
    Ui::NetWorkCheckClass ui;
  NetworkTester *tester;
  QTimer *timer;
};

//NetWorkCheck.cpp
#include "NetWorkCheck.h"
NetWorkCheck::NetWorkCheck(QWidget *parent)
    : QMainWindow(parent)
{
    ui.setupUi(this);
  tester = new NetworkTester(this);
  QThread *thread = new QThread;
  tester->moveToThread(thread);
  thread->start();
  timer = new QTimer(this);
  QObject::connect(timer, &QTimer::timeout, tester, &NetworkTester::testNetworkStatus);
  QObject::connect(tester, &NetworkTester::networkStatusChanged, [](bool status) {
    if (status) {
    qDebug() << "Network is available.";
    }
    else {
    qDebug() << "Network is not available.";
    }
  });
  timer->start(5000);
}
NetWorkCheck::~NetWorkCheck()
{}

//main.cpp
#include "NetWorkCheck.h"
#include <QtWidgets/QApplication>
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    NetWorkCheck w;
    w.show();
    return a.exec();
}