Qt Mqtt not connecting

lodeSmets

Hello,

I have read the documentation and the example code for the Qt Mqtt library.
Now I'm trying to create my own client, but the QMqttClient won't connect to the broker

    QMqttClient *client= new QMqttClient();
    client->setHostname("192.168.0.137");
    client->setPort(1883);
    client->connectToHost();

    QMqttClient::ClientState state =client->state();
    while (client->state()==QMqttClient::Connecting);

When debugging the state is always connecting (never connected).
I know the library works (because the example code works).
Is there something I forgot?

Thanks in advance,
Lode

SGaist

Hi,

You might be strangling the event loop with that while loop.

Pablo J. Rogina

@lodeSmets said in Qt Mqtt not connecting:

I have read the documentation and the example code for the Qt Mqtt library.

So you have seen that the simpleclient for instance doesn't have any loop, and it's "event-based" using just signals and slots.

And out of curiosity and for statistical purposes, what server (i.e. Mosquitto) are you trying to connect to? Thanks.