Proper way to handle multiple QNetworkRequests - c++

Question

im grabbing url's from a list and then sending each to a QNetworkRequest and recieving the HTML back to process. I however have thousands of requests to process. So my application kept hanging until i stopped it from producing all these requests at once.
Is this the rite way to handle the que for a great number of requests?
I tried using a Qqueue of Urls, which i would then link to a SLOT which was triggered after each QNetworkReply reponse.
Create the job list and add to que
QQueue<QString> jobs;
for (int i = 1; i <= totalPages; i++){
QString pageUrl = url + "&page=" + QString::number(i);
jobs.enqueue(pageUrl);
}
qDebug() << "Total Jobs : " << jobs.count() << endl;
for (int i = 0; i < 5; i++){
processQueue();
}
then inside the getHtml function
QNetworkAccessManager *manager = new QNetworkAccessManager(this);
QNetworkRequest *getHtmlRequest = new QNetworkRequest(pageUrl);
getHtmlRequest = new QNetworkRequest(url);
getHtmlRequest->setRawHeader( "User-Agent", "Mozilla/5.0 (X11; U; Linux i686 (x86_64); "
"en-US; rv:1.9.0.1) Gecko/2008070206 Firefox/3.0.1" );
getHtmlRequest->setRawHeader( "charset", "utf-8" );
getHtmlRequest->setRawHeader( "Connection", "keep-alive" );
connect(manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(replyGetPageHtmlFinished(QNetworkReply*)));
connect(manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(processQueue()));
manager->get(*getHtmlRequest);
which triggers
void checkNewArrivalWorker::processQueue(){
if (jobs.isEmpty()){
qDebug() << "Jobs Completed" << endl;
emit finished();
} else {
QString pageUrl = jobs.dequeue();
QString pageNumber = pageUrl.mid(pageUrl.indexOf("page=") + 5);
getHtml(pageUrl, pageNumber);
}
}