QNetworkRequest https problem connect missing reply

[Linux5445]

Hello I create this thread because i dont find solution for my problem.

I want to connect in this web site and take cookies: https://cas.univ-ubs.fr/login

my CookieJar class write in a file all cookies of the reply but they have nothing with this website.

void FenPrincipale::takeCookies()
{
	QUrl postData;
	postData.addQueryItem("username","user101");
	postData.addQueryItem("password",var2_Edit->text());
	postData.addQueryItem("warn", "true");
	postData.addQueryItem("lt", lt);
	postData.addQueryItem("_eventId", "submit");
	postData.addQueryItem("submit", "SE CONNECTER");
 
	// On crée une requête
	QNetworkRequest requete(QUrl(urlEdit1->text()));
 
	requete.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");
	r = m->post(requete, postData.encodedQuery());
 
 
	// Gestion des erreurs
	connect(r, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(messageErreur(QNetworkReply::NetworkError)));
	// Gestion de fin de téléchargement
	connect(r, SIGNAL(finished()), this, SLOT(takeLink())); 
}
 
// The second slot for the reply
void FenPrincipale::takeLink()
{
	QNetworkReply *reply = static_cast<QNetworkReply*>(sender());
	QNetworkAccessManager *m = reply->manager();
	m->setCookieJar(new CookieJar(this));
 
	qDebug() << reply->readAll();
}

void FenPrincipale::takeCookies()
{
	QUrl postData;
	postData.addQueryItem("username","user101");
	postData.addQueryItem("password",var2_Edit->text());
	postData.addQueryItem("warn", "true");
	postData.addQueryItem("lt", lt);
	postData.addQueryItem("_eventId", "submit");
	postData.addQueryItem("submit", "SE CONNECTER");

	// On crée une requête
	QNetworkRequest requete(QUrl(urlEdit1->text()));

	requete.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");
	r = m->post(requete, postData.encodedQuery());
	

	// Gestion des erreurs
	connect(r, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(messageErreur(QNetworkReply::NetworkError)));
	// Gestion de fin de téléchargement
	connect(r, SIGNAL(finished()), this, SLOT(takeLink())); 
}

// The second slot for the reply
void FenPrincipale::takeLink()
{
	QNetworkReply *reply = static_cast<QNetworkReply*>(sender());
	QNetworkAccessManager *m = reply->manager();
	m->setCookieJar(new CookieJar(this));

	qDebug() << reply->readAll();
}

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Thanks in advance.