How to upload screenshot through http multipart ?

animeshdhakal

I am trying to upload a screenshot to http server. Here is my current code but it doesn't work

QNetworkAccessManager* manager = new QNetworkAccessManager();
QNetworkRequest request;

QByteArray data;
QBuffer buffer(&data);

QScreen* screen = QGuiApplication::primaryScreen();
    
QPixmap pixmap = screen->grabWindow(0);

buffer.open(QIODevice::WriteOnly);

pixmap.save(&buffer, "PNG");

QHttpMultiPart *multiPart = new QHttpMultiPart(QHttpMultiPart::FormDataType);

QHttpPart imagePart;
imagePart.setHeader(QNetworkRequest::ContentTypeHeader, QVariant("image/png"));
imagePart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"image\"; filename=\"screenshot.png\""));
imagePart.setBodyDevice(&buffer);

multiPart->append(imagePart);

QObject::connect(manager, &QNetworkAccessManager::finished, &app, [](QNetworkReply* reply){
        QString json = reply->readAll();
        qDebug() << "Json response" << json;
});

request.setUrl(QUrl("Some Upload URL"));

manager->post(request, multiPart);

SGaist

Hi,

What exactly does not work ?
What error are you getting ?
Did you check the server's logs to see what happens there ?

animeshdhakal

Server is working properly. I am neither getting a response or error but when i remove the append of imagePart, i am getting a response from server.

jsulm

@animeshdhakal said in How to upload screenshot through http multipart ?:

or error

Are you sure? In the code you posted you have no error handling...