How to send QString to server in Qt 5.6?

d1.psy

Before, when I was using Qt 5.5, I could send network requests this way:

QString jsonString = "Some string info";
uploadManager = new QNetworkAccessManager(this);
QNetworkRequest rqData (theApp->getDomain() + "PageOnServerName.php"); 
rqData.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded"); 
QNetworkReply * r = uploadManager->post(rqData, jsonString.toLatin1());
QEventLoop loop; 
QTimer::singleShot(std::max(10u,timeout_msecs),&loop,SLOT(quit())); 
r->connect(r, SIGNAL(finished()), &loop, SLOT(quit())); 
r->connect(r, SIGNAL(error(QNetworkReply::NetworkError)), &loop, SLOT(quit())); 
loop.exec();

But right now it doesn't seem to work anymore. Server doesn't get any information

SGaist

Hi,

You should check whether you get any error from the query.

raven-worx

any warnings in the console?
What is the server address? In case it's a https-conenction check if your applciation can find the OpenSSL libraries.

d1.psy

@raven-worx turns out there's problem with cookies for some reason. uploadManager contains different cookies. For example cookies should be "PHPSESSION = 12345", but uploadManager has "PHPSESSION = 67890". That's why it says "Invalid session" everytime. How do I set right cookies to uploadManager? I've tried uploadManager->cookieJar()->cookiesForUrl(QUrl("http://page.com/PageOnServerName.php")); and it still gives me wrong cookies. Any suggestions?

raven-worx

@d1.psy
make sure you reuse the same QNetworkAccessManager instance. When the server sends you a cookie, the QNAM stores it automatically and reuses them in the next request.

d1.psy

@raven-worx in QT 5.5 I had this function

QNetworkAccessManager *MainWindow::manager ()  {
    if (getView()) {
        if (getView()->page()) {
            QNetworkAccessManager *p =  getView()->page()->networkAccessManager();
			return p;
        }
    }

And manager was used to send post requests to server. It had right cookies

QNetworkReply * r = manager()->post(rqData, jsonString.toLatin1());

but since QWebEngine doesn't with QNAM, I'm using this

QNetworkAccessManager *MainWindow::manager ()  {
    if (getView()) {
        if (getView()->page()) {
			return uploadManager;
        }
    }

QNetworkReply * r = uploadManager->post(rqData, jsonString.toLatin1());

and uploadManager is using wrong cookies

raven-worx

@d1.psy
so you want the cookies from the requests you already made with QtWebEngine?
If so take a look at QWebEngineCookieStore (see it's signals) and "sync" the cookies into your QNAM.