Hello wysota
In the first method takeId i make a GET request to take an id like :c9A188DB9-048B-8F48-0B65-D696212D9AF2_k7D5BBE5A-A72E-33F9-38AD-7C37C4146126

In the takeCookie method i made a cookie in write in my cookie file :
Sun, 12-Aug-2012 17:59:28 GMT; domain=cas.univ-ubs.fr; path=/c9A188DB9-048B-8F48-0B65-D696212D9AF2_k7D5BBE5A-A72E-33F9-38AD-7C37C4146126

next i make a POST request for login with my first cookie, my username, the id, and my password but nothing append.

in firefox when i just go in the web i receveid a cookie but in qt i can't so i simulated the first cookie.

In python a similar code work perfectly then i think i just a little error in my code.
Qt Code: 
  1. void FenPrincipale::takeId()
  2. {
  3. 	QNetworkAccessManager *m = new QNetworkAccessManager();
  4. 	QNetworkRequest requete(QUrl("https://cas.univ-ubs.fr/login"));
  5.  
  6. 	QNetworkReply *r = m->get(requete);
  7. 	qDebug() << "takeId";
  8.  
  9. 	connect(r, SIGNAL(finished()), this, SLOT(takeCookies())); 
  10. 	connect(r, SIGNAL(error(QNetworkReply::NetworkError)), this,
  11. 			 SLOT(messageErreur(QNetworkReply::NetworkError)));
  12.  
  13. }
  14.  
  15. void FenPrincipale::takeCookies()
  16. {
  17. 	boutonEnvoyer->setEnabled(false);
  18.  
  19.  
  20. 	QNetworkReply *reply = static_cast<QNetworkReply*>(sender());
  21. 	QNetworkAccessManager *m = reply->manager();
  22.  
  23. 	// Récupère L'id
  24. 	QString source = reply->readAll();
  25. 	QString lt = source.section("\"",119,119);
  26. 	// Récupère le Cookie JSession
  27. 	source = source.section("\"",41,41);
  28. 	// Contruit le cookie
  29. 	QString data;
  30. 	data = "JSESSIONID";
  31. 	data += source.remove(QRegExp("[a-z/;]"));
  32. 	data += "; expires=Sun, 12-Aug-2012 17:59:28 GMT; domain=cas.univ-ubs.fr; path=/";
  33.  
  34. 	qDebug() << "takeCookies =" << data;
  35.  
  36. 	QFile f("Cookies.txt");
  37. 	QTextStream out(&f);
  38. 	if ( f.open(QIODevice::ReadWrite) )
  39. 	{
  40. 		QString exist = out.readAll();
  41. 		if (exist.indexOf("cas") != -1 )
  42. 		{
  43.   			out.seek(0);
  44. 			qDebug() << "seek";
  45. 		}
  46.  
  47. 		out << data;
  48. 		f.close();
  49. 	}
  50. 	m->setCookieJar(new CookieJar(this));
  51.  
  52. 	QUrl postData;
  53. 	postData.addQueryItem("username","");
  54. 	postData.addQueryItem("password",var2_Edit->text());
  55. 	postData.addQueryItem("warn", "true");
  56. 	postData.addQueryItem("lt", lt);
  57. 	postData.addQueryItem("_eventId", "submit");
  58. 	postData.addQueryItem("submit", "SE CONNECTER");
  59.  
  60. 	// On crée une requête
  61. 	QNetworkRequest requete(QUrl(urlEdit1->text()));
  62.  
  63. 	QNetworkReply *r;
  64. 	if (box2->isChecked()) 
  65. 	{
  66. 		requete.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");
  67. 		r = m->post(requete, postData.encodedQuery());
  68. 	}
  69.  
  70. 	// Gestion des erreurs
  71. 	connect(r, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(messageErreur(QNetworkReply::NetworkError)));
  72. 	// Gestion de fin de téléchargement
  73. 	connect(r, SIGNAL(finished()), this, SLOT(takeLink())); 
  74.  
  75. 	// Gestion de la barre de progression
  76. 	connect(r, SIGNAL(downloadProgress(qint64, qint64)), this, SLOT(progressionTelechargement(qint64, qint64)));
  77.  
  78. 	connect(r, SIGNAL(sslErrors(const QList<QSslError>&)), this, SLOT(ErreurSsl(const QList<QSslError>&)));
  79.  
  80. 	connect(m, SIGNAL(authenticationRequired(QNetworkReply*, QAuthenticator*)),
  81. 			this,SLOT(authentification(QNetworkReply*, QAuthenticator*)));
  82.  
  83. }
  84.  
  85. void FenPrincipale::takeLink()
  86. {
  87. 	QNetworkReply *reply = static_cast<QNetworkReply*>(sender());
  88. 	QNetworkAccessManager *m = reply->manager();
  89. 	m->setCookieJar(new CookieJar(this));
  90.  
  91. 	qDebug() << reply->readAll();
  92. 	boutonEnvoyer->setEnabled(true);
  93.  
  94. 	QNetworkRequest requete(QUrl("http://web.univ-ubs.fr/edt/ade/custom/myplanning/myPlanning.jsp?top=top.moniframeesup"));
  95. 	QNetworkReply *r = m->get(requete);
  96. 	qDebug() << "takeLink";
  97. }
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