How to ignore your own broadcast udp packets

Question

For the following I\'m assuming one network card.

I have a component of my program which is designed to let others in the subnet know of its existence. For this, I\

Answer 1

getsockname (function documentation) can discover the local IP address associated with a particular socket. If you call this on the socket you're using to send the broadcast, you should see the same IP address you'll see returned by recvfrom.