QHttpMultiPart upload file boundary issue - qt

Question

I'm trying to upload some files to a server by using QHttpMultiPart. The following version file is just an example. For some reason, Qt will automatically add boundary into the files. However, what I truly uploaded are .tar.gz files and they will be considered damaged if such boundary were added.
int main(int argc, char *argv[])
{
QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
QGuiApplication app(argc, argv);
QNetworkAccessManager *netManager = new QNetworkAccessManager();
HTTPFirmwareUpgrader upgrader(netManager,"http://mytest.com");
upgrader.upgradeCIU();
return app.exec();
}
void HTTPFirmwareUpgrader::upgradeCIU()
{
QString filename = "version";
QString filePath = QString("C:/Users/User/Desktop/HTTP/%1").arg(filename);
qDebug() << uploadFirmware(filename, filePath);
}
bool HTTPFirmwareUpgrader::uploadFirmware(const QString &filename, const QString &filePath)
{
QHttpMultiPart *multiPart = new QHttpMultiPart(QHttpMultiPart::FormDataType);
QHttpPart myPart;
QFile *file = new QFile(filePath);
if(!file->exists())
qWarning() << "File DOES NOT exists";
file->open(QIODevice::ReadOnly);
myPart.setHeader(QNetworkRequest::ContentTypeHeader, QVariant("form-data"));
myPart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"version\"; filename=\"version\""));
myPart.setBodyDevice(file);
file->setParent(multiPart);
multiPart->append(ciu);
QByteArray resp = this->post(createUploadRequest(QString("filename=%1").arg(filename)),
multiPart, file);
qDebug() << "Upload Filrmware " << resp;
return resp != "";
}
QByteArray HTTPFirmwareUpgrader::post(QUrl url, QHttpMultiPart *multiPart, QFile *file)
{
QNetworkRequest request;
QEventLoop loop;
request.setUrl(url);
request.setHeader(QNetworkRequest::ContentTypeHeader, QVariant("multipart/form-data"));
QNetworkReply *reply = m_manager->post(request, multiPart);
connect(reply, SIGNAL(finished()), &loop, SLOT(quit()));
loop.exec();
multiPart->setParent(reply);
reply->deleteLater();
return reply->readAll();
}
This is the original "version" file:
enter image description here
And this is the "version" file that transferred:
enter image description here
And if I do not set header for the request, the size of the transferred file will be 0.
Does anyone have any idea what should I do?

Answer 1

Problem solved!!!
Turns out I use the wrong way to upload the file. What I need to use is QIODevice instead of QMultipart.