code: def connect(self, recv_miu=248, recv_buf=2):
          
          socket = nfc.llcp.Socket(self.llc, nfc.llcp.DATA_LINK_CONNECTION)
          socket.setsockopt(nfc.llcp.SO_RCVBUF, recv_buf)
          socket.setsockopt(nfc.llcp.SO_RCVMIU, recv_miu)
          socket.connect("urn:nfc:sn:handover")
          server = socket.getpeername()
          log.debug("handover client connected to remote sap {0}".format(server))
          self.socket = socket
docs: Connect to the remote handover server if available. Raises
          :exc:`nfc.llcp.ConnectRefused` if the remote device does not
          have a handover service or the service does not accept any
          more connections.