docs: def _send_to_address(self, address, data, timeout=10):
          """send data to *address* and *port* without verification of response.
          """
          # Socket to talk to server
          socket = get_context().socket(REQ)
          try:
              socket.setsockopt(LINGER, timeout * 1000)
              if address.find(":") == -1:
                  socket.connect("tcp://%s:%d" % (address, self.default_port))
              else:
                  socket.connect("tcp://%s" % address)
              socket.send_string(data)
              message = socket.recv_string()
              if message != "ok":
                  LOGGER.warn("invalid acknowledge received: %s" % message)
  
          finally:
              socket.close()