post get cookiejar ...

JonB · 8 Jan 2018, 06:42

@El_Professor
All this untested, but I think you just need to try receiving the "cookiejar" from the server responses and sending it back unchanged to the server in all requests. Something like:

// initially associate a cookie jar with the manager
manager = new QNetworkAccessManager;
QNetworkCookieJar *cJar = new QNetworkCookieJar(manager);
manager->setCookieJar(cJar);
// from now on the manager includes the cookie jar
QNetworkReply * reply = manager->post(req, postData);

The cookie jar needs preserving across calls. Check that you receive the PHPSESSID cookie in it from the server in a response, and then that is preserved and passed back to the server on subsequent requests.

An explanation from http://www.qtcentre.org/threads/45977-sending-cookies-using-qt reads:

Attach a QNetworkCookieJar to your QNetworkAccessManager, make requests, cookies are stored and returned to the relevant servers automatically. There's nothing else to it. If the first request you make from your Qt program is the login request then you will have the session cookie(s) in your cookie jar and they will be returned with any subsequent request using the same jar.

I believe that confirms what I am saying and the principle in the code I have written above.

El_Professor · 2 Aug 2018, 05:12

Good evening, you have helped me well, I thank you for it.

I understand how it works now. So I added your lines in my class constructor. Now I have no more mistakes but I still have a little problem I think.

In my function GetUserAcount() I create my QNetworkRequest() with my URL. Then I do a get and finally I connect the return of my get.
Here is the code:

void MainWindow::GetUserAccount()
{
    QNetworkRequest requete_GetUSer(QUrl("https://lobby-api.ogame.gameforge.com/users/me/accounts"));
    QNetworkReply * reply_test = this->networkManager->get(requete_GetUSer);
    connect(reply_test, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(slotErrorReply(QNetworkReply::NetworkError)));
    connect(reply_test, SIGNAL(finished()), this, SLOT(ReplyFinished()));
}

The problem and slots are never called ReplyFinished() for example is never called. So I wonder if what I did really works.

I receive the PHPSESSID well during the first call to the post() method.

jsulm · wrote on 2 Aug 2018, 05:12

@El_Professor Did you check your connect() calls succeeded?
Is slotErrorReply() called?

El_Professor · 2 Aug 2018, 11:07

Apparently n'i sloterrorReply() nor replyfinished() is called.because I put a qDebug() in each slot and nothing is displayed by for the first call when I retrieve the PHPSESSID via the post() method. i show you my entire code :



#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow),
    b_ErrorCode(false),
    b_PhpSessid(false)
{
    this->ui->setupUi(this);

    this->networkManager = new QNetworkAccessManager; //On crée le QNetworkAccessManager qui va traiter les requêtes
    QNetworkCookieJar *cjar = new QNetworkCookieJar(this->networkManager);
    this->networkManager->setCookieJar(cjar);

    connect(this->ui->demarrerTelechargement, SIGNAL(clicked()), this, SLOT(Login()));
}

MainWindow::~MainWindow()
{
    delete this->ui;
    delete this->networkManager;
}

void MainWindow::ReplyFinished()
{
    qDebug() << "ok";
    if (this->b_ErrorCode == false)
    {
        qDebug() << "Fin de post" << "L'envoi de données par POST a été effectué avec succès !";
        QVariant cookieVar = this->reply->header(QNetworkRequest::SetCookieHeader);


        if (cookieVar.isValid()) {
            QList<QNetworkCookie> cookies = cookieVar.value<QList<QNetworkCookie> >();
            foreach (QNetworkCookie cookie, cookies) {
                qDebug() << cookie << reply->url();
                if (cookie.name() == "PHPSESSID")
                {
                    this->b_PhpSessid = true;
                    this->ByteArray_phpSessionId = cookie.value();
                    this->b_ErrorCode = false;
                    GetUserAccount();
                }
            }
        }
        close();
    }
    this->b_ErrorCode = false;
}

void MainWindow::slotErrorReply(QNetworkReply::NetworkError)
{
    this->b_ErrorCode = true;

    int i_CodeError = this->reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();

    qDebug() << i_CodeError;
    if (i_CodeError >= 500)
        QMessageBox::critical(this, "Erreur", "Ogame server error code : <br /><br /><em>" + reply->errorString() + "</em>");
    else if (i_CodeError != 200)
        QMessageBox::critical(this, "Erreur", "Error Bad Mail or Password <br /><br /> Code de l'erreur : <br /><em>" + reply->errorString() + "</em>");
}

void MainWindow::GetPhpSessID()
{
    QUrlQuery postData;
    postData.addQueryItem("kid", "");
    postData.addQueryItem("language", "en");
    postData.addQueryItem("autologin", "false");
    postData.addQueryItem("credentials[email]", "jordan02820@gmail.com");
    postData.addQueryItem("credentials[password]", "aqwzsxaze02820");
    QNetworkRequest requete_PhpSessid(QUrl("https://lobby-api.ogame.gameforge.com/users")); //On crée notre requête avec l'url entrée par l'utilisateur
    requete_PhpSessid.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");
    this->reply = this->networkManager->post(requete_PhpSessid, postData.toString(QUrl::FullyEncoded).toUtf8());
    connect(this->reply, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(slotErrorReply(QNetworkReply::NetworkError)));
    connect(this->reply, SIGNAL(finished()), this, SLOT(ReplyFinished()));
}

void MainWindow::GetUserAccount()
{
    QNetworkRequest requete_GetUSer(QUrl("https://lobby-api.ogame.gameforge.com/users/me/accounts")); //On crée notre requête avec l'url entrée par l'utilisateur

    this->reply = this->networkManager->get(requete_GetUSer);


    connect(this->reply, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(slotErrorReply(QNetworkReply::NetworkError)));
    connect(this->reply, SIGNAL(finished()), this, SLOT(ReplyFinished()));
}

void MainWindow::Login()
{
    this->b_ErrorCode = false;

    this->GetPhpSessID();

}

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QNetworkAccessManager>
#include <QMainWindow>
#include <QDebug>
#include <QNetworkReply>
#include <QNetworkRequest>
#include <QtGui>
#include <QMessageBox>
#include <QList>
#include <QMap>
#include <QUrlQuery>
#include <QVariant>
#include <QNetworkCookie>
#include <QNetworkCookieJar>



namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    /**
     * @brief MainWindow constructeur de la classe
     * @param parent
     */
    explicit MainWindow(QWidget *parent = 0);

    /**
     * @brief Destructeur de la classe
     */
    ~MainWindow();

private:
    /**
     * @brief ui variable qui permet d'accèder a l'interface
     */
    Ui::MainWindow *ui;

    /**
     * @brief FromData variable contenant la requete pour les données de log (email, mdp)
     */
    QByteArray  FromData;

    /**
      * @brief b_errorCode Boléen true = error or false
      */
    bool         b_ErrorCode;

    /**
     * @brief b_PhpSessid booléen true = PHPSESSID trouver si false = PHPSESSID non trouver
     */
    bool         b_PhpSessid;

    /**
     * @brief reply
     */
    QNetworkReply *reply;

    /**
     * @brief networkManager
     */
    QNetworkAccessManager *networkManager;

    /**
     * @brief GetPhpSessID
     */
    void        GetPhpSessID();

    /**
     * @brief GetUserAccount
     */
    void        GetUserAccount();

    /**
     * @brief ByteArray_phpSessionId
     */
    QByteArray  ByteArray_phpSessionId;

private slots:
    /**
     * @brief ReplyFinishedPhpSess Slot appelé a la fin d'une requete.
     * @return rien
     */
    void ReplyFinished();

    /**
     * @brief slotErrorReply slot appeler quand il y a une erreur (pendant une demande de requete, perte de connexion ou autre..)
     * @param[QNetworkReplay::NetworkError] : Code erreur reçu par le signal
     * @return rien
     */
    void slotErrorReply(QNetworkReply::NetworkError);

    /**
     * @brief Login SLot appeler quand on appuis sur le bouton téléchargement
     * @return rien
     */
    void Login();
};

#endif // MAINWINDOW_H

Thanks again for the help.

jsulm · wrote on 2 Aug 2018, 11:07

@El_Professor Did you verify that connect() calls succeeded as I suggested?

qDebug() << connect(reply_test, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(slotErrorReply(QNetworkReply::NetworkError)));
qDebug() << connect(reply_test, SIGNAL(finished()), this, SLOT(ReplyFinished()));

El_Professor · wrote on 2 Aug 2018, 13:59

Yes,

qDebug() << connect(this->reply, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(slotErrorReply(QNetworkReply::NetworkError)));
    qDebug() << connect(this->reply, SIGNAL(finished()), this, SLOT(ReplyFinished()));

this function sends me back:

true
true

El_Professor · wrote on 3 Aug 2018, 16:56

Hello,

up? please.

El_Professor · 5 Aug 2018, 18:20

hello, up?...

aha_1980 · wrote on 5 Aug 2018, 18:20

hi @El_Professor ,

i can just recommend using Wireshark for all kind of network debugging.

You will see all outgoing and incoming packets and can verify their contents.

as your connect statements return true, the slots should surely be called when data arrives.

El_Professor · 5 Aug 2018, 18:35

Thank you for your, what is wireshark?

aha_1980 · wrote on 5 Aug 2018, 18:35

@El_Professor

http://lmgtfy.com/?q=wireshark