code: def _add_membership_multicast_socket(self):
          
          self._membership_request = socket.inet_aton(self._multicast_group) \
              + socket.inet_aton(self._multicast_ip)
  
          # Send add membership request to socket
          # See http://www.tldp.org/HOWTO/Multicast-HOWTO-6.html
          # for explanation of sockopts
          self._multicast_socket.setsockopt(
              socket.IPPROTO_IP,
              socket.IP_ADD_MEMBERSHIP,
              self._membership_request
          )
docs: Make membership request to multicast
  
          :rtype: None