Setting User And Password For Qt WebView & WebEngine Diectly

shahriar25

Hi. I wanted to set user and password for Qt WebView & WebEngine directly. I have my own VPS and I have setup HttpProxy on it. My application has a web browser and I want that web browser to use the http proxy. I've tried setting application proxy but the web view raises a dialog asking for user and password. I want to set user and password in the code so that users won't have to deal with the dialog.

shahriar25

Any Ideas?

Pablo J. Rogina

@shahriar25 are you talking about user/password for a proxy, so your QWebView application can traverse such proxy, which requires authentication, and reach the desired destination?
If so, I imagine you may need to rely on using a QNetworkProxyFactory that once configured properly (for instance, to use the system proxy's settings) is then set to the QNetworkAccessManager that makes the connection

shahriar25

@Pablo-J-Rogina
Hi
Thank you for replying and helping.
I tried using QNetworkProxyFactory:

class ProxyFactory : public QNetworkProxyFactory
{
public:
QList<QNetworkProxy> queryProxy(const QNetworkProxyQuery &query)
{
Q_UNUSED(query)

	QNetworkProxy proxy;

	proxy.setType(QNetworkProxy::HttpProxy);
            // set proxy variables here

	return QList<QNetworkProxy>() << proxy;
}

};

and then:
QNetworkProxyFactory::setApplicationProxyFactory(new ProxyFactory());

but this doesn't work. I mean it proxies QNetworkAccessManager and stuff but it is not what I want.
I want the webview to use this proxy and not raise a dialog and ask the user for credentials.

Pablo J. Rogina

@shahriar25 maybe the trick here is that QWebPage within your QWebView is using its own QNetworkAccessManager, so perhaps by doing:

myWebView->page()->setNetworkAccessManager(yourQNAM)

will cause the webview to use your QNAM with your proxy settings.

shahriar25

@Pablo-J-Rogina
Well see that is the problem. I'm working with qml and using webview in it

Pablo J. Rogina

@shahriar25 are you saying you're using this QML WebView component? If so, on one side you should have stated your issue better :-) and you may need to work with the underlying QNetworkAccessManager of QML, see this post as a guideline.

shahriar25

@Pablo-J-Rogina
Hi. I'm sorry for late reply
I'm sorry if I left out using qml. It wasn't intentional
I tried this:

class QmlNAMFactory : public QQmlNetworkAccessManagerFactory
{
virtual QNetworkAccessManager *create(QObject *parent)
{
QNetworkAccessManager *nam = new QNetworkAccessManager(parent);
QNetworkProxy proxy;

	proxy.setType(QNetworkProxy::HttpProxy);
            // proxy info here

	nam->setProxy(proxy);
	return nam;
}

};

QQmlApplicationEngine engine;
engine.setNetworkAccessManagerFactory(new QmlNAMFactory);

but this has no effect on webview. It doesn't change a thing
I'm sorry the function was returning nullptr I edited it. I did that just to text the effect

shahriar25

Isn't there anything that I can do?

i.n.g.o.

Hi.

Did you solve the problem?

I am hitting the same problem, i need to set a header to every QML WebView request.

Setting the network access manager on QQmlApplicationEngine does not call MyNetworkAccessManagerFactory::create.
Seems WebView is not using QNetworkAccessManager at all.

Is this possible at all?

thanks for hints.

Anton Beresnev

@i-n-g-o Hi.Do you solve problem?

Ronel_qtmaster

@i-n-g-o it does

Ronel_qtmaster

The first thing to do is to create a network access Manager factory class

NetworkAccessManagerFactory.cpp

#include "networkaccessmanagerfactory.h"

QNetworkAccessManager *NetworkAccessManagerFactory::create(QObject *parent)
{

QNetworkAccessManager *manager = new QNetworkAccessManager(parent);
return manager;
}

NetworkAccessManagerFactory.h

#ifndef NETWORKACCESSMANAGERFACTORY_H
#define NETWORKACCESSMANAGERFACTORY_H
#include "customnetworkaccessmanager.h"
#include <QNetworkAccessManager>
#include <QNetworkProxy>
#include <QQmlEngine>
#include <QQmlNetworkAccessManagerFactory>
#include <QtNetwork>

class NetworkAccessManagerFactory : public QQmlNetworkAccessManagerFactory
{

public:
QNetworkAccessManager *create(QObject *parent) override;

private:

};

#endif // NETWORKACCESSMANAGERFACTORY_H

Then finally add to qml side by writing this in the main.cpp

NetworkAccessManagerFactory customNam;

QQmlApplicationEngine engine;
engine.setNetworkAccessManagerFactory(&customNam);

Ronel_qtmaster

you can also check this as well
https://code.qt.io/cgit/qt/qtdeclarative.git/tree/examples/qml/networkaccessmanagerfactory?h=5.15