QNetworkRequest and default SSL configuration

Question

I\'m using the following piece of code to make HTTPS requests with a server.

QNetworkRequest request;

//request.setSslConfiguration(QSslConfiguration::defau         


        

Answer 1

From documentation of
void QNetworkRequest::setSslConfiguration ( const QSslConfiguration & config ):

By default, no SSL configuration is set, which allows the backends to choose freely what configuration is best for them.

You can verify this statement using the following code:

#include 
#include 
#include 
#include 
#include 
#include 

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    QNetworkAccessManager qnam;
    QNetworkRequest request;
    QNetworkReply* reply = qnam.get(request);

    qDebug() << "Default SSL configuration isNull: "
             << QSslConfiguration::defaultConfiguration().isNull();

    qDebug() << "SSL configuration used by QNAM isNull: "
             << reply->sslConfiguration().isNull();

    return app.exec();
}

However, you seem to confuse root CA certificates store with SSL configuration. The former is only one part of the latter (see QList QSslConfiguration::caCertificates () const). If you want to make sure your root CA certificates will be used by QNAM you can take advantage of the fact that QNAM uses QSslSocket to make SSL connections and use any of the following static methods

void addDefaultCaCertificate ( const QSslCertificate & certificate )
bool addDefaultCaCertificates ( const QString & path, QSsl::EncodingFormat encoding = QSsl::Pem, QRegExp::PatternSyntax syntax = QRegExp::FixedString )
void addDefaultCaCertificates ( const QList & certificates )
void setDefaultCaCertificates ( const QList & certificates )

to set root CA certificates to be used by all SSL connections made using QSslSocket. Remember, this is global setting and affects all SSL connections made using QSslSocket not only these made using QNAM. There's no API to set this only for specific QNAM or for all QNAMs.