why?

@#include "include/Protocol/Ftp.h"
#include "include/ConfigFile/ConfigFile.h"
#include "include/Defines/Global.h"

#include <QUrl>
#include <QNetworkAccessManager>
#include <QFile>
#include <QApplication>

Ftp::Ftp(ConfigFile &config, QWidget *parent) :
QWidget(parent), cf(config), reply(NULL)
{
manager = new QNetworkAccessManager(0);
connecttimer.setInterval(FTP_CONNECT_TIMEOUT);
connect(&connecttimer, SIGNAL(timeout()), this, SLOT(CheckConnection()));

}

void Ftp::GetFile(void)
{
if(!reply)
{
reply = manager->get(QNetworkRequest(QUrl("ftp://" +cf.GetftpUsername() +":" +cf.GetftpPassword() +"@" +cf.GetServerAddress().toString() +":" +QString::number(cf.GetftpPort()) +"/" +cf.GetProgramName() +OS_PRG_EXT)));
qDebug() << "#########" << "reply == NULL" << "#########";
connect(reply, SIGNAL(downloadProgress(qint64,qint64)), this, SLOT(downloadinProgress(qint64,qint64)));
connect(reply, SIGNAL(finished()), this, SLOT(replyfinished()));
connect(reply, SIGNAL(readyRead()), this, SLOT(slotReadyRead()));
connect(reply, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(slotError(QNetworkReply::NetworkError)));
}

connecttimer.start();

#if DEBUG_LEVEL_FTP > LOG_ERRORS
     qDebug() << this->metaObject()->className() << "FTP: GetFile ";
#endif

}

void Ftp::CheckConnection(void)
{
#if DEBUG_LEVEL_FTP > LOG_ERRORS
qDebug() << this->metaObject()->className() << "CheckConnection";
#endif

connecttimer.stop();
reply->disconnect();

if(reply)
{
    if(reply->isFinished())
    {
        replyfinished();
        emit DownloadFinished(reply->error());

            emit StatusUpdate("No error");
    }
    else
    {
        qDebug() << "reply->isFinished() " << reply->isFinished();
        emit DownloadFinished(QNetworkReply::TimeoutError);
        emit StatusUpdate("the connection to the remote server timed out");
    }
}
reply->deleteLater();
reply = NULL;

}

void Ftp::downloadinProgress(qint64 bytesReceived, qint64 bytesTotal)
{
#if DEBUG_LEVEL_FTP > LOG_ERRORS
qDebug() << this->metaObject()->className() << "downloadinProgress " << "bytesReceived " << bytesReceived << "bytesTotal " << bytesTotal;
#endif

connecttimer.start();

}

void Ftp::slotReadyRead(void)
{
#if DEBUG_LEVEL_FTP > LOG_ERRORS
qDebug() << this->metaObject()->className() << "slotReadyRead";
#endif

connecttimer.start();

}

void Ftp::replyfinished()
{
connecttimer.stop();

#if DEBUG_LEVEL_FTP > LOG_ERRORS
     qDebug() << this->metaObject()->className() <<"replyfinished ";
#endif
if(reply)
{
    #if DEBUG_LEVEL_FTP > LOG_ERRORS
        qDebug() << this->metaObject()->className() << "if reply ";
    #endif
    if(reply->bytesAvailable())
    {
        QFile file&#40;QApplication::applicationDirPath(&#41; +"/" + cf.GetProgramName() + TEMP_FILENAME_EXT);
        file.open(QIODevice::WriteOnly);

        #if DEBUG_LEVEL_FTP > LOG_ERRORS
             qDebug() << this->metaObject()->className() << "file write: " << file.write(reply->readAll());
        #endif

        file.close();
    }
    emit DownloadFinished(reply->error());
    qDebug() << reply->errorString()<< " reply->error() " << reply->error();
    if(reply->error() == 0)
        emit StatusUpdate("No error");
    else
        emit StatusUpdate(reply->errorString());
}
else
{
    emit DownloadFinished(QNetworkReply::TimeoutError);
    emit StatusUpdate("the connection to the remote server timed out");
}
reply->deleteLater();
reply = NULL;

}

void Ftp::slotError(QNetworkReply::NetworkError error)
{

#if DEBUG_LEVEL_FTP > LOG_NOTHING
     qDebug() << this->metaObject()->className() <<"slotError: " << error;
#endif

if(error)
{
    connecttimer.stop();
    emit DownloadFinished(reply->error());
    emit StatusUpdate(reply->errorString());
    reply->deleteLater();
    reply = NULL;
}

}

@