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chamoda
17th January 2013, 07:16
Hi!

I'm a beginner to Network programming and I'm trying to write a simple console application which return html source from server.

this is the code



void Downloader::doDownload()
{
QHttp *http = new QHttp(this);

http->setHost("c-studios.host56.com");
http->get("/index.html");

connect(http, SIGNAL(stateChanged(int)), this, SLOT(stateChanged(int)));
connect(http, SIGNAL(responseHeaderReceived(QHttpResponseHeader) ), this, SLOT(responseHeaderReceived(QHttpResponseHeader))) ;
connect(http, SIGNAL(requestFinished(int,bool)), this, SLOT(requestFinished(int,bool)));
connect(http, SIGNAL(readyRead(QHttpResponseHeader)), this, SLOT(showHtml()));


}

// ....

void Downloader::responseHeaderReceived(const QHttpResponseHeader &resp)
{
qDebug() << "Size: " << resp.contentLength(); //works fine. show correct length
qDebug() << "Type: " << resp.contentType(); // works fine
qDebug() << "Status: " << resp.statusCode(); // fine return 200
}

void Downloader::requestFinished(int id, bool error)
{
if(error)
{
qDebug() << "Error!";
}
else
{
qDebug() << "Ok!";
}
}

void Downloader::showHtml()
{
QString html(http->readAll()); //this is the problem. QString is empty
qDebug() << html;
}



when i call http->readAll() it's return empty byte array. I can't fugure out what is the problem. someone help please. thanks

wysota
17th January 2013, 07:59
I'm guessing there is no data yet ready, just the headers. You can read your data in requestFinished() if you want. Or better yet use QNetworkAccessManager instead of the deprecated QHttp.