Can't read UDP reply (golang)

Question

I\'m working on a Go program that sends out a UDP broadcast to query existence of devices on the local network and then reads the replies. Using Wireshark I confirm that the

Answer 1

You need to use ListenUDP instead of DialUDP. When you use DialUDP, it creates a "connected" UDP port, and only packets originating from the remote address are returned on read.

conn, err = net.ListenUDP("udp", ourAddr)

Since the connection doesn't have a default destination, you will also need to use WriteTo* methods to send packets:

sendLen, err := conn.WriteToUDP(discoverMsg, serverAddr)