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//! [0]
socket->connectToHost("imap", 143);
if (socket->waitForConnected(1000))
    qDebug("Connected!");
//! [0]


//! [1]
socket->disconnectFromHost();
    if (socket->state() == QAbstractSocket::UnconnectedState || 
        socket->waitForDisconnected(1000))
        qDebug("Disconnected!");
//! [1]


//! [2]
 // This slot is connected to QAbstractSocket::readyRead()
 void SocketClass::readyReadSlot()
 {
     while (!socket.atEnd()) {
         QByteArray data = socket.read(100);
         ....
     }
 }
//! [2]


//! [3]
socket->setProxy(QNetworkProxy::NoProxy);
//! [3]