def peek_host(self):
    self._logger.debug('Peek host at address list: {0}'.format(list(self.address_deque)))
    if (len(self.address_deque) == 0):
        return None
    return self.address_deque[0].host
def peek_host(self):
    self._logger.debug('Peek host at address list: {0}'.format(list(self.address_deque)))
    if (len(self.address_deque) == 0):
        return None
    return self.address_deque[0].host