QAbstractSocket::waitForBytesWritten() is not allowed in UnconnectedState

[anda_skoa]

i might sound like a newbie but what response would i get from the the waits?

The waitForXYZ methods return true if the signal has been emitted or false if that was not the case.

And do you have any idea as to how i could change to code to maybe try non blocking communication

By connecting to the signals instead of using the waitFor methods.

Usually the pattern is a "Command" or "Job", an object that encapsulates the steps necessary to achieve the goal.

Something like

class RebootCommand : public QObject
{
    Q_OBJECT
public:
    explicit RebootCommand(QObject *parent = nullptr);
 
    void start(const QString &host, int port);
 
signals:
    void finished();
 
private slots:
    void onConnected();
    void onReadyRead();
 
private:
    enum State {
        Disconnected,
        WaitingForUserPrompt1,
        WaitingForPasswordPrompt1,
        WaitingForUserPrompt2,
        WaitingForPasswordPrompt2
    };
    State m_state = Disconnected;
 
    QTcpSocket *m_socket = nullptr;
};

class RebootCommand : public QObject
{
    Q_OBJECT
public:
    explicit RebootCommand(QObject *parent = nullptr);

    void start(const QString &host, int port);

signals:
    void finished();

private slots:
    void onConnected();
    void onReadyRead();

private:
    enum State {
        Disconnected,
        WaitingForUserPrompt1,
        WaitingForPasswordPrompt1,
        WaitingForUserPrompt2,
        WaitingForPasswordPrompt2
    };
    State m_state = Disconnected;

    QTcpSocket *m_socket = nullptr;
};

To copy to clipboard, switch view to plain text mode 

Cheers,
_