Load HTML file in QWebView by QTcpServer

fant

Hi,

currently I writing a desktop application for playing YouTube playlists. Therefore a HTML file will be loaded from Qt resources into QML WebView.

WebView {
    anchors.centerIn: parent
    anchors.fill: parent
    id: webView
    opacity: 1
    url: "qrc:/View/Player/player.html?" + youTubeId;
}

In the HTML document the YouTube iFrame is included. So I have the opportunity to control the video by YouTube iFrame API.

But on this way the video can't be played, because the HTML document will be loaded as local file. I suppose that the webkit engine blocks the streaming request. For test I put the HTML file in a root directory of running Apache HTTP server and replaced the WebView url with localhost address: http://localhost:8080/player.html. As expected, it works then.

My next idea was writing a simple web server that is able deliver the HTML file by localhost address. I would like to implement it in my application, instead using an external server as Apache.
That's the point where my problem occurs: I can't get it. My server implementation doesn't respond to any HTTP request. Probably I'm forgot something very important or I have a very bad fallacy.

At first I wrote a custom server class:

class Server : public QTcpServer
{
    Q_OBJECT

    /* ... */

    protected:
        void incomingConnection(qintptr socketDescriptor);
};

Inside of incomingConnection method a debug message will be printed to console. My main method looks like this:

int main(int argc, char *argv[])
{
    Controller controller;
    controller.operate("");

    QCoreApplication app(argc, argv);
    return app.exec();
}

Controller class is copied from Qt documentation: Look here.
This is my implementation of doWork method from Worker class:

void Worker::doWork(const QString &)
{
    Server server;
    server.listen(QHostAddress::LocalHost, 8080);

    emit resultReady(QString("ready"));
}

When app is running, these lines will be executed, I checked it by debugger. The server is running, too (according to isListening method).
Now, when server is running (my Apache webserver does not, port is free^^) and I request this url: http://localhost:8080 in my web browser, the browser tab is loading long time, but won't complete and on console I get no response (debug message in incomingConnection).
When I stop the server, the browser stops loading immediately.

Some additional information that could be useful: I running my application in QtCreator with administrator rights. At first run my OS shows a dialogue to access network communication - I still approve it.

Does somebody know what I did wrong / how I could solve my problem or how I could take my next steps to analyze where it fails?

Thanks in advance.

SGaist

Hi,

First thing: QXXXApplication should be the first object created.

The your server object only lives in the method since it's a local variable. Thus as soon as the emit is done, the function ends and the object is destroyed.

fant

Oh My God, and it works. It really works. Of course. Not sure if I'm a fool. 😄

I'll continue with some other tests and adjustments in the next hours or days then I'll update this thread to fixed state.

Thank you for your help!