Hello, I have a problem with my program, I hope you could help me!

I have written this code for download a file from internet. The problem is that it does not get download the file. I think that's code
Qt Code: 
  1. reply = qnam.get(QNetworkRequest(url));
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does not emit the signal ReadyRead, such as say the oficial documentation.

Qt Code: 
  1. Posts a request to obtain the contents of the target request and returns a new QNetworkReply object opened for reading which emits the readyRead() signal whenever new data arrives.
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Which is the problem of the code?

updates.h

Qt Code: 
  1. #include <QString>
  2. #include <QFile>
  3. #include <QNetworkReply>
  4. #include <QtNetwork/QtNetwork>
  5. #include <QtNetwork/QNetworkAccessManager>
  6. #include <QWidget>
  7. #include <QObject>
  8. #include <QMainWindow>
  9. #include <QProgressDialog>
  10.  
  11. class updates : public QMainWindow
  12. {
  13.     Q_OBJECT
  14.  
  15. public:
  16.     updates(QWidget *parent = 0);
  17.     void checkUpdates(QString version);
  18. private:
  19.     QString fileNameUpdate,versionInstalled,pathDownload;
  20.     QFile *file;
  21.     QNetworkReply *reply;
  22.     QNetworkAccessManager qnam;
  23.     bool httpRequestAborted;
  24.     int iVersion;
  25.  
  26.     void download(QString textUpdate);
  27.  
  28.     QProgressDialog *dialog;
  29.  
  30. private slots:
  31.     void httpFinished();
  32.     void httpFinishedDownload();
  33.     void httpReadyRead();
  34.     void replyErrorActualizaciones(QNetworkReply::NetworkError code);
  35.     void updateDataReadProgress(qint64,qint64);
  36. };
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updates.cpp

Qt Code: 
  1. #include <QUrl>
  2. #include <QFileInfo>
  3. //#include <QObject>
  4. #include <QDebug>
  5. #include <QMessageBox>
  6. #include <QFileDialog>
  7. #include <QProcess>
  8. #include <QStringList>
  9.  
  10. #include "updates.h"
  11.  
  12. updates::updates (QWidget *parent) :
  13.     QMainWindow(parent)
  14. {
  15.     iVersion =0;
  16. }
  17.  
  18.  
  19. void updates::checkUpdates(QString version)
  20. {
  21.     httpRequestAborted=false;
  22.  
  23.     //Variables
  24.     QUrl url("http://weblink.link/link");
  25.     QFileInfo fileInfo(url.path());//url.path() devuelve a partir del .es/ .com/ .org/
  26.     fileNameUpdate.append(fileInfo.fileName());//nombre del arvhivo //.fileinfo -Returns the name of the file, excluding the path.
  27.  
  28.     file = new QFile(fileNameUpdate);
  29.     file->open(QIODevice::WriteOnly);
  30. //Hasta aqui simplemente creo el archivo para poder escribir en el
  31.     versionInstalled = version;
  32.  
  33.     reply = qnam.get(QNetworkRequest(url));//se supone que esto emite la readyRead(), pero no funciona!!
  34.     qDebug() << reply;
  35.  
  36.     connect(reply, SIGNAL(finished()),this, SLOT(httpFinished()));
  37.     connect(reply, SIGNAL(readyRead()),this, SLOT(httpReadyRead()));
  38.     connect(reply,SIGNAL(error(QNetworkReply::NetworkError)),this,SLOT(replyErrorActualizaciones(QNetworkReply::NetworkError)));
  39.  
  40. }//checkUpdate
  41.  
  42.  
  43. //Private slots
  44.  
  45. void updates::httpFinished()
  46. {
  47.     //Variables
  48.     QString text,auxiliar;
  49.     bool ok;
  50.     double versionServidor;
  51.     QFile fileToRead;
  52.  
  53.     if (httpRequestAborted)
  54.     {
  55.         if (file)
  56.         {
  57.             file->close();
  58.             file->remove();
  59.             delete file;
  60.             file = 0;
  61.         }
  62.         reply->deleteLater();
  63.         return;
  64.     }//if
  65.  
  66.     file->close();
  67.  
  68. .
  69. .
  70. .
  71. .
  72. .
  73.  
  74. void updates::httpReadyRead()
  75. {
  76.     if (file)
  77.         file->write(reply->readAll());
  78.  
  79.     qDebug() << "Ready";
  80. }//httpReadyRead
  81.  
  82. void updates::replyErrorActualizaciones(QNetworkReply::NetworkError code)
  83. {
  84.     qDebug() << "Download error: " << code;
  85.     httpRequestAborted = true;
  86. }//replyErrorActualizaciones
  87.  
  88. void updates::httpFinishedDownload()
  89. {
  90.     if (httpRequestAborted)
  91.     {
  92.         if (file)
  93.         {
  94.             file->close();
  95.             file->remove();
  96.             delete file;
  97.             file = 0;
  98.          }
  99.          reply->deleteLater();
  100. .
  101. .
  102. .
  103. .
  104. .
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I use that class from MainWindow.cpp

MainWindow.cpp

Qt Code: 
  1. MainWindow::MainWindow(QWidget *parent) :
  2.     QMainWindow(parent),
  3.     ui(new Ui::MainWindow)
  4. {
  5. connect(ui->actionActualizaciones,SIGNAL(triggered()),SLOT(slotCheckUpdates()));
  6. }
  7.  
  8. .
  9. .
  10. .
  11. .
  12.  
  13. void MainWindow::slotCheckUpdates()
  14. {
  15.     updates a(this);
  16.     a.checkUpdates(version);
  17. }//updates
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I have thought a long time why it does not work and can not find the reason, I hope you could help me!

Thanks!