code: def wait_for_message_from(address, wait_for_s=config.FOREVER, autoreply=False):
      
      _logger.info("Waiting for message on %s for %s secs", address, wait_for_s)
      message = sockets._sockets.wait_for_message_from(address, wait_for_s)
      if message is not None and autoreply:
          sockets._sockets.send_reply_to(address, EMPTY)
      return message
docs: Wait for a message
      
      :param address: a nw0 address (eg from `nw0.advertise`)
      :param wait_for_s: how many seconds to wait for a message before giving up [default: forever]
      :param autoreply: whether to send an empty reply [default: No]
      
      :returns: the message received from another address or None if out of time