QNetworkAccessManager long delay to emit finished signal

vinid3

I use a QNAM to handle uploads using a ftp protocol. The whole process works but I have a strange behavior:

this is my method :
@void ftp::uploadFile(const QString &origin, const QString &destination)
{
QUrl url("ftp://"+host+""+destination);
url.setUserName(user);
url.setPassword(pwd);
url.setPort(21);

localFile = new QFile&#40;origin, this&#41;;
if (localFile->open(QIODevice::ReadOnly))
{
     reply = nam->put(QNetworkRequest(url), localFile);
     QObject::connect(reply, SIGNAL(uploadProgress(qint64, qint64)), SLOT(transferProgress(qint64, qint64)));        
     QObject::connect(reply, SIGNAL(finished()), this, SLOT(transferFinished()));
}
else qDebug() << localFile->errorString();

}@

When I upload a file, the uploadProgress is emitted :

@qDebug() << sent << "/" << total;@

outputs the 0/x till the x/x . Then it takes a long time, maybe up to 20 seconds before the finished signal is emitted. Why this delay?

I tried ignoring the finished signal and emit the signal myself when the progress is at sent==total but the file is corrupted at the other end. (It's not really corrupted, as I only send jpg, The resulting file is an upper-half only jpg. a big part is just grey.)

I'd like to provide my users with a progress bar where 100% really means the process is finished. Uploading for 5 seconds, then staying for 20 seconds at 100% isn't really nice. What am I doing wrong?

DJ_Lectr0

I have the exact same problem except over http. I have found out that also the download progress signal takes this long time. And it is not because of my internet connection, bc it needs to download 60 bytes.

DJ_Lectr0

I have the exact same problem except over http. I have found out that also the download progress signal takes this long time. And it is not because of my internet connection, bc it needs to download 60 bytes.