QTcpServer as HTML Server

[rtavakko]

I've been trying to port a basic Arduino HTML server that I have to QT 5 code and I'm having a bit of difficulty. With Arduino you simply write your HTML code to the client but when I do the same thing with a TCP client that I get by calling nextPendingConnection(), I can't view the HTML page. Is this the correct way of doing this? I understand QT 6 has some classes that are designed specifically for this but I'd rather do something more simple and generic.

[rtavakko]

The server page was not loading and the issue was I was using the server's newConnection() signal to immediately write the html page to the client. But you have to wine and dine the client first. I ended up connecting the newConnection() signal to a set up function:

void Server::handleConnection()
{
    QTcpSocket* client = nextPendingConnection();
    //client->setSocketOption(QAbstractSocket::KeepAliveOption, 0);

    QObject::connect(client,&QTcpSocket::readyRead,this,[=](){
        handleRequest(client);
    });
}

You can then write the HTML content to the client in handleRequest()

[jeremy_k]

"can't view the HTML page" is hard to evaluate without more information. Is the client (browser?) not receiving any response? Is the response incomplete or corrupted? Does the content-type, including encoding, correspond to the data received?

[rtavakko]

The server page was not loading and the issue was I was using the server's newConnection() signal to immediately write the html page to the client. But you have to wine and dine the client first. I ended up connecting the newConnection() signal to a set up function:

void Server::handleConnection()
{
    QTcpSocket* client = nextPendingConnection();
    //client->setSocketOption(QAbstractSocket::KeepAliveOption, 0);

    QObject::connect(client,&QTcpSocket::readyRead,this,[=](){
        handleRequest(client);
    });
}

You can then write the HTML content to the client in handleRequest()