OptionalgroupMulticast group address.
Due to dgram.Socket API limitation, if multiple multicast UDP transports are using the same port number but different group addresses, incoming traffic may be received on all sockets regardless of the group address. This also affects multicast UDP transports in other programs such as YaNFD. To isolate the traffic, the port number must be changed.
IPv4 address of local network interface.
OptionalmulticastMulticastLoopback flag.
OptionalmulticastMulticast TTL.
OptionalportLocal and group port.
openMulticastRx and openMulticastTx options.