I'm trying to create a two way street between two computers using UDP as a protocol. Maybe I'm not understanding the point of net.ListenUDP. Shouldn't this be a blocking call? Waiting for a client to connect?
addr := net.UDPAddr{
Port: 2000,
IP: net.ParseIP("127.0.0.1"),
}
conn, err := net.ListenUDP("udp", &addr)
// code does not block here
defer conn.Close()
if err != nil {
panic(err)
}
var testPayload []byte = []byte("This is a test")
conn.Write(testPayload)
It isn't blocking because it runs in the background. Then you just read from the connection.
addr := net.UDPAddr{
Port: 2000,
IP: net.ParseIP("127.0.0.1"),
}
conn, err := net.ListenUDP("udp", &addr) // code does not block here
if err != nil {
panic(err)
}
defer ln.Close()
var buf [1024]byte
for {
rlen, remote, err := conn.ReadFromUDP(buf[:])
// Do stuff with the read bytes
}
var testPayload []byte = []byte("This is a test")
conn.Write(testPayload)
Check this answer. It has a working example of UDP connections in go and some tips to make it work a little better.
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