Game Development Reference
This is very useful for LAN lobbies, since the host can call out to every other player who
is currently looking at joining a game. In that way players don't need to know the exact IP
address of the host machine.
A final remark for UDP specifically is that there is a maximum size of the packet which is
sent with the UdpSocket::send() method - a little less than 2^16 (65536) bytes. We
can also get this number by looking at UdpSocket::MaxDatagramSize .