Facebook api POST request to image upload

[_Disa_]

Good day. I can't understend how create a POST request to upload an image. I was searching in the net, and found several versions. But is always response for me (after request) - "(# 324) Requires upload file".
Thank you!

ui->webView->load(QUrl("https://www.facebook.com/dialog/oauth?"
                           "client_id=XXXXXXXXXX&"
                           "display=popup&"
                           "response_type=token&"
                           "scope=user_status,user_photos,publish_actions&"
                           "redirect_uri=https://www.facebook.com/connect/login_success.html"));

1

QString uploadUrl = "https://graph.facebook.com/me/photos?access_token=" +
                        accessToken;

    QString photoPath = QCoreApplication::applicationDirPath() + "/image_example.png";
    
    QFileInfo fileInfo(photoPath);
    QFile file(photoPath);

    QString comment = "User provided message";

    QString bound="---------------------------17673466415141";

    QByteArray data;

    data.append("--" + bound + "\r\n");
    data.append("Content-Disposition: form-data; name=\"access_token\"\r\n\r\n");
    data.append(accessToken + "\r\n");

    data.append("--" + bound + "\r\n");
    data.append("Content-Disposition: form-data; name=\"source\"; filename=\""
                + file.fileName()+"\"\r\n");
    data.append("Content-Type: image/" + fileInfo.suffix().toLower() + "\r\n\r\n");
    data.append(file.readAll());
    data.append("\r\n");

    data.append("--" + bound + "\r\n");
    data.append("Content-Disposition: form-data; name=\"message\"\r\n\r\n");
    data.append(comment);
    data.append("--" + bound + "\r\n");

    QNetworkRequest request(uploadUrl);

    request.setRawHeader("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
    request.setRawHeader("Accept-Language", "en-us,en;q=0.5");
    request.setRawHeader("Accept-Encoding", "gzip,deflate");
    request.setRawHeader("Accept-Charset", "ISO-8859-1,utf-8;q=0.7,*;q=0.7");
    request.setRawHeader("Keep-Alive", "300");

    request.setRawHeader("Content-Type",
                         QString("multipart/form-data; boundary=" + bound).toLatin1());
    request.setRawHeader("Content-Length", QString(data.size()).toLatin1());

    QNetworkAccessManager * manager = new QNetworkAccessManager(this);
    QNetworkReply * reply =  manager->post(request, data);
    QEventLoop wait;

    connect(manager, SIGNAL(finished(QNetworkReply*)), &wait, SLOT(quit()));
    connect(manager, SIGNAL(finished(QNetworkReply*)), manager, SLOT(deleteLater()));

    QTimer::singleShot(10000, &wait, SLOT(quit()));
    wait.exec();

    QByteArray answer = reply->readAll();
    reply->deleteLater();

    qDebug() << answer;

2

QString uploadUrl = "https://graph.facebook.com/me/photos?access_token=" +
                        accessToken;

    QString photoPath = QCoreApplication::applicationDirPath() + "/image_example.png";
    
    QFileInfo fileInfo(photoPath);
    QFile file(photoPath);

    QPixmap pixmap;
    pixmap.load(photoPath);
    QByteArray data;

    QBuffer buffer(&data);
    buffer.open(QIODevice::ReadWrite);
    pixmap.save(&buffer, "png");
    buffer.close();

    QHttpMultiPart * multiPart = new QHttpMultiPart(QHttpMultiPart::FormDataType);
    QHttpPart imagePart;
    imagePart.setHeader(QNetworkRequest::ContentTypeHeader, QVariant("image/png"));

    imagePart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"source\"; filename=\""+ file.fileName()));
    imagePart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"message\""));

    imagePart.setBody(data);
    multiPart->append(imagePart);

    QNetworkAccessManager * manager = new QNetworkAccessManager(this);
    QNetworkReply * reply =  manager->post(request, multiPart);
    QEventLoop wait;

    connect(manager, SIGNAL(finished(QNetworkReply*)), &wait, SLOT(quit()));
    connect(manager, SIGNAL(finished(QNetworkReply*)), manager, SLOT(deleteLater()));

    QTimer::singleShot(10000, &wait, SLOT(quit()));
    wait.exec();

    QByteArray answer = reply->readAll();
    reply->deleteLater();

    qDebug() << answer;