This method is called by a Qt timer or by network activity on a file descriptor

def doIteration(self, delay=None, fromqt=False):
        'This method is called by a Qt timer or by network activity on a file descriptor'
        
        if not self.running and self._blockApp:
            self._blockApp.quit()
        self._timer.stop()
        delay = max(delay, 1)
        if not fromqt:
            self.qApp.processEvents(QtCore.QEventLoop.AllEvents, delay * 1000)
        if self.timeout() is None:
            timeout = 0.1
        elif self.timeout() == 0:
            timeout = 0
        else:
            timeout = self.timeout()
        self._timer.setInterval(timeout * 1000)
        self._timer.start()