Broadcast packets in C



Hello there,
I'm trying to build a program in C which uses broadcast HELLO packets,
multicast RREQ, RREP, RERR packets and routing tables exchange.I want
to keep it as simple as possible.
I know how to send broadcast simple Hello using UDP socket function,
but I can't make from the beginning the HELLO routing tables etc
packets and broadcasts them or receive them separately from the known
socket and listen functions, and using them i cant understand how can
I use the arguments of the functions.
Can anyone please give me some directions what should i do? because
I'm trying a lot here and there are not efficient examples in the net.
Thanx

.



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