adding in main logic for ping pong

server/main.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"fmt"
+	"net"
+)
+
+func main() {
+	// udp listen
+	conn, err := net.ListenUDP("udp", &net.UDPAddr{IP: net.IPv4(0, 0, 0, 0), Port: 5000})
+	if err != nil {
+		panic(err)
+	}
+
+	for {
+		// read
+		buf := make([]byte, 512)
+		n, addr, err := conn.ReadFromUDP(buf)
+		if err != nil {
+			panic(err)
+		}
+
+		fmt.Println("SERVER | received message from ", addr)
+
+		// write
+		_, err = conn.WriteToUDP(buf[:n], addr)
+
+		if err != nil {
+			panic(err)
+		}
+	}
+
+}