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sending http request to server

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I’m trying to send http request to home automation controller ( Vera 2) but i’ve got problem with reading the response. nam->get is giving empty reply. So i tired firtst to write to file than read from file( xml files) but when i do nam->get first slot functions is being executed later than parse function and i got error QNetworkReply *MainWindow::send_request(QString request, int flag) {     QString req = request;       QNetworkReply *reply;       QNetworkRequest rreq;       rreq.setUrl(QUrl(req));         QNetworkAccessManager *nam = new QNetworkAccessManager();       bool ok = connect(nam, SIGNAL(finished(QNetworkReply*)), this, SLOT(finishedSlot(QNetworkReply*)));       reply = nam->get(rreq);       parse_device_list();       return reply; } void MainWindow::parse_device_list() {  QFile *file = new QFile("devices_list.xml");       if(!file->open(QIODevice::ReadOnly))     {         qDebug() << "error";         return;       }     qDebug() << "passed"; } void MainWindow::finishedSlot(QNetworkReply *reply) {     qDebug() << "here";     if (reply->error() == QNetworkReply::NoError)     {               // read data from QNetworkReply here             //qDebug() << reply->readAll();             QFile *file = new QFile("devices_list.xml");               if(!file->open(QIODevice::WriteOnly))             {                 qDebug() << "error file";                 return;             }             else             {                  file->write(reply->readAll());               }             file->close();             //this->parse_device_list();             qDebug() << "end";     }     // Some http error received     else     {         qDebug() << "error write";// handle errors here     }   }

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