docs: def check_transport_host(self):
          """
          Check if zeromq socket is available
          on transport host
          """
          sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
          result = sock.connect_ex(('events-server', 8080))
          if result == 0:
              logging.info('port 8080 on zmq is open!')
              return True
          return False