SOLVED: QAbstractSocket::waitForBytesWritten() is not allowed in UnconnectedState

[johnmerlino]

I am getting the following error:

QAbstractSocket::waitForBytesWritten() is not allowed in UnconnectedState

Basically, I instantiate QUdpSocket and it seems to connect fine because on my log it says "Listening on port". And then when I run nestat on ubuntu it shows that port in use.

@Gateway::Gateway(QObject *parent, qint16 port, bool load_mirrors)
m_socket(new QUdpSocket(this)),
m_database(new Database(this)),
m_notify(new Notify(this))
{

connect(m_socket, SIGNAL(readyRead()),
this, SLOT(readData()));

if (m_socket->bind(m_port)) {
Log::write(QString("Listening on port %1\n").arg(port), Log::LogAll);
} else {
Log::write(QString("Socket Bind Error: %1\n").arg(m_socket->errorString()), Log::LogAll);
m_exit = true;
return;
}
...
}

void Gateway::readData()
{
while (m_socket->hasPendingDatagrams()) {
QByteArray data;
data.resize(m_socket->pendingDatagramSize());
m_socket->readDatagram(data.data(), data.size(),
&m_clientAddr, &m_clientPort);
Log::write(QString("Data from socket: %1\n").arg(GprsMsg::toAsciiString(data)));
handlePacket(data);
}
}@

But it seems like that log "Data from socket: " in readData() is never reached. So I am not sure what the issue can be.

[SGaist]

Hi,

Might be stupid question but… Are you sending anything to that port ?

[johnmerlino]

It was because the vpn was down

[SGaist]

Glad you found out !

Can you please also update the thread title prepending [solved] so other forum users may know a solution has been found :)