Qt download test

downloader.cpp

#include "downloader.hpp"
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QUrl>
#include <QVariant>
#include <QDebug>

Downloader::Downloader(QObject *parent) :
    QObject(parent)
{
    connect(&m_manager, SIGNAL(finished(QNetworkReply*)), SLOT(handleReply(QNetworkReply*)));
}

void Downloader::test() {
    QNetworkRequest request;
    QUrl url("http://www.google.com");
    url.addQueryItem("q", "42");
    request.setUrl(url);

    QNetworkReply* rep = m_manager.get(request);
    rep->setProperty("url", QVariant(url));
    qDebug() << "Get" << rep << rep->url();
}

void Downloader::handleReply(QNetworkReply *reply) {
    qDebug() << "Handle" << reply << reply->url();
    qDebug() << "Dynamic property" << reply->property("url").isValid() << reply->property("url");
    reply->deleteLater();
}

downloader.h

#ifndef DOWNLOADER_HPP
#define DOWNLOADER_HPP

#include <QObject>
#include <QNetworkAccessManager>

class QNetworkReply;

class Downloader : public QObject
{
    Q_OBJECT
public:
    Downloader(QObject* parent=0);

    void test();

public slots:
    void handleReply(QNetworkReply* reply);

protected:
    QNetworkAccessManager m_manager;
};

#endif // DOWNLOADER_HPP

main.cpp

#include <QCoreApplication>
#include "downloader.hpp"

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    Downloader down;
    down.test();

    return a.exec();
}