Unable to Open QWebsocket with Username and Password

odriscog

Hello there,

I am currently trying to open a QWebSocket to a kdb+ process which is protected by a username and password. In order to do this from kdb+ and JavaScript, I can just provide the websocket URL as ws://username:password@host:port and the connection works as expected.

I am trying to test this using the simple Qt example 'echoclient' here. I am using Qt 5.15.2. If I try to use the equivalent QWebSocket(QUrl(QStringLiteral("ws://username:password@host:port")) the connection simply doesn't work. The kdb+ server I am trying to connect to doesn't even register the attempted connection.

Is it known if it is possible to use QWebSockets to create a WebSocket to a password protected process? Or is there a correct way to authenticate the user and password over HTTP prior to opening the WebSocket perhaps?

Thank you

Christian Ehrlicher

@odriscog said in Unable to Open QWebsocket with Username and Password:

ws://username:password@host:port

You should at least make sure that QUrl() can parse your url

qDebug() << QUrl("ws://username:password@host:port")

But I would guess you simply did not read the documentation of the QWebSocket ctor - it does not take an url as first argument

odriscog

@Christian-Ehrlicher

My apologies that's a typo in my initial question. What I meant to say is that I am using

EchoClient client(QUrl(QStringLiteral("ws://user:password@host:port")), debug);

in the linked example which has the constructor

EchoClient::EchoClient(const QUrl &url, bool debug, QObject *parent) :
    QObject(parent),
    m_url(url),
    m_debug(debug)
{
    if (m_debug)
        qDebug() << "WebSocket server:" << url;
    connect(&m_webSocket, &QWebSocket::connected, this, &EchoClient::onConnected);
    connect(&m_webSocket, &QWebSocket::disconnected, this, &EchoClient::closed);
    connect(&m_webSocket, &QWebSocket::stateChanged, this, [](QAbstractSocket::SocketState state) { qDebug() << state ; } );
    m_webSocket.open(QUrl(url));
}

I have switched on debug in the option and the output suggests that the URL is being parsed okay, I get the following output...

WebSocket server: QUrl("ws://user@host")
QAbstractSocket::ConnectingState
QAbstractSocket::UnconnectedState

Christian Ehrlicher

QWebSocket and QUrl have so many functions to check if they're valid or not or what's currently going on - you should use them.