Can't use QNetworkAccessManager to login to a website

coco

Hello,

I am trying to login to a website using QNetworkAccessManager, QNetworkReply and QNetworkRequest. I got the status code 200 and nothing else. Did I miss something here?

void LogFunc::doLogin()
{

    QUrl url("https://url");

    QNetworkRequest request(url);
    request.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");

    QString username = "user";
    QString password = "pass";

    QUrlQuery urlQuery;
    urlQuery.addQueryItem("username", username);
    urlQuery.addQueryItem("password", password);
    QString params = urlQuery.query();

    manager = new QNetworkAccessManager(this);
    connect(manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(replyFinished(QNetworkReply*)));
    manager->post(request, params.toUtf8());

}

void LogFunc::replyFinished(QNetworkReply *reply)
{
    qDebug() << reply->readAll();
    int statusCode = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
    QString statusName = reply->attribute(QNetworkRequest::HttpReasonPhraseAttribute).toString();
    qDebug() << statusCode << statusName;

    if(statusCode == 302)
    {
        QUrl newUrl = reply->attribute(QNetworkRequest::RedirectionTargetAttribute).toUrl();
        QNetworkRequest newReq(newUrl);
        manager->get(newReq);

    }
    else if((statusCode == 403) || (statusCode == 404))
    {
        qDebug() << reply->url().toString();
        qDebug() << reply->error();
        qDebug() << reply->errorString();

    }
    else
    {
        qDebug() << "Done";
    }

    reply->deleteLater();
}

Thank you in advance.

I got page content if I tried to add fault key for username or password. The page will say they need username or password to login (obviously). I also got something if I use GET but nothing with POST.

coco

So I did miss something and not Qt related...

Turns out the website also provides API for ease of use. I use the same code and API info provided by the particular website. To login, I need another login url and to get the data I want, I need to add another query then voila!