QNetworkCookieJar - Retrieving individual data from cookie

  • I have set up a standard QNetworkCookieJar to be used with multiple QWebView I use in my application.

    I need to retrieve some cookie data in order to create a custom c++ object
    However the function allCookie() is protected and I can't seem to get them.

    Anyone did this before?

    Here is my code trying to retrieve the cookies :
    @ QNetworkAccessManager nam = qApp->property("NetworkManager").value<QNetworkAccessManager>();
    QNetworkCookieJar *jar = nam->cookieJar();

    QList<QNetworkCookie> cookiesLst = jar->allCookies();
     for (int i = cookiesLst.count() - 1; i >= 0; --i) {
            qDebug() << "found cookie here";


    C:\Dropbox\PowerVelo2\gui\mainwindow.cpp:47: 'QNetworkCookieJar::allCookies' : cannot access protected member declared in class 'QNetworkCookieJar'

  • You can use "QNetworkCookieJar::cookiesForUrl":http://qt-project.org/doc/qt-5/qnetworkcookiejar.html#cookiesForUrl

    Or you can derive your class from QNetworkCookieJar and use allCookies() in that class as it is "suggested":http://qt-project.org/doc/qt-5/qnetworkcookiejar.html#allCookies in the doc.

  • Lifetime Qt Champion


    You can't access protect functions unless you are deriving from that class. From a quick look at QNetworkCookieJar, you'll have to use cookiesForUrl

  • Thanks for the guidance guys.
    cookiesForUrl is perfect for my needs, I don't need to persist the cookie for now.

    I'm using codeIgniter to set the cookie on the server side :

    I retrieve the cookie this way:
    @ QList<QNetworkCookie> cookiesLst = jar->cookiesForUrl(QUrl(Environnement::getURLEnvironnement()));

    foreach (QNetworkCookie cookie, cookiesLst) {
        qDebug() << cookie.name();
        qDebug() << cookie;

    log :
    QNetworkCookie("ci_session=a:4:{s:10:"session_id";s:32:"ee434b8cba49682794ec50eeee959917";s:10:"ip_address";s:3:"::1";s:10:"user_agent";s:101:"Mozilla/5.0+(Windows+NT+6.1;+WOW64)+AppleWebKit/538.1+(KHTML,+like+Gecko)+MaximumTrainer+Safari/538.1";s:13:"last_activity";i:1405003057;}0aab4290e254a90ca848c80362216400; expires=Sat, 09-Jul-2016 14:37:50 GMT; domain=localhost; path=/")
    "localhost" @

    I'll have to find how to retrieve custom session data, so far it only return me the basic codeIgniter cookie but not the data I added. if it's too complex i'll just make a request to a webservice instead at the cost of one more DB requets.
    Thanks for the help guys

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