How to enable CORS support in application in QT?

Pyroxar

I want add CORS support for my application (QML and xhtmlrequest, JSON, RESTAPI, etc)
I finded this: http://doc.qt.io/qt-5/qwebsocketcorsauthenticator.html
but i dont have idea how i should do it.

in main.cpp:

QWebSocketCorsAuthenticator CORS;
CORS.setAllowed(true);

Can you give me a clue?

Pyroxar

I use QML/XMLHttpRequest

var req = new XMLHttpRequest();
               req.open('GET', 'http://www.kacperpaczos.pl/skryptwphpie/?cors', true); /* Argument trzeci, wartość true, określa, że żądanie ma być asynchroniczne */
               req.onreadystatechange = function(aEvt) {
                   if (req.readyState == 4) {
                       if (req.status == 200) {
                           //showRequestInfo(req.responseText);
                           mylabel.text = req.responseText;
                       } else{
                           //showRequestInfo("Błąd podczas ładowania strony\n");
                       mylabel.text = "Błąd podczas ładowania strony\n";}
                   }
               };

It work fine

mrjj

@Pyroxar
Hi
It seems its via a signal.

"the QWebSocketCorsAuthenticator class is used in the originAuthenticationRequired() signal"

http://doc.qt.io/qt-5/qwebsocketserver.html#originAuthenticationRequired

So you connect the signal to a slot and when its called, you use the
authenticator parameter and call setAllowed() on that one.

Eeli K

I found this in "QML Global Object" documentation:

"QML's XMLHttpRequest does not enforce the same origin policy."

Pyroxar

I read something:
http://doc.qt.io/qt-5/echoserver.html
http://doc.qt.io/qt-5/signalsandslots.html

In 'main.cpp' file I 'copmpose' this:

QWebSocketCorsAuthenticator *CORS = new QWebSocketCorsAuthenticator("https://jsonplaceholder.typicode.com/photos/");
    CORS->setAllowed(true);
     //qDebug() << CORS.allowed();

    QWebSocketServer *CORSrequest = new QWebSocketServer(QStringLiteral("Request"),
                                                         QWebSocketServer::SecureMode);
    CORSrequest->originAuthenticationRequired(CORS);

    QObject::connect(CORSrequest, &QWebSocketServer::originAuthenticationRequired,
                         CORS, &QWebSocketCorsAuthenticator::allowed);

Is this the right way?

Pyroxar

I use QML/XMLHttpRequest

var req = new XMLHttpRequest();
               req.open('GET', 'http://www.kacperpaczos.pl/skryptwphpie/?cors', true); /* Argument trzeci, wartość true, określa, że żądanie ma być asynchroniczne */
               req.onreadystatechange = function(aEvt) {
                   if (req.readyState == 4) {
                       if (req.status == 200) {
                           //showRequestInfo(req.responseText);
                           mylabel.text = req.responseText;
                       } else{
                           //showRequestInfo("Błąd podczas ładowania strony\n");
                       mylabel.text = "Błąd podczas ładowania strony\n";}
                   }
               };

It work fine