'Flush the application\'s queued data.
The application could have sent data while we were busy authenticating
the remote machine.  This method flushes the data which could have been
queued in the meanwhile in `self.sendBuf\'.'

def flushSendBuffer(self):

    if (len(self.sendBuf) == 0):
        return
    self.sendRemote(self.sendBuf)
    self.sendBuf = ''
