UDP server & client

udpclient.go

package main

import (
	"fmt"
	"net"
)

func main() {
	serverAddr := net.UDPAddr{
		Port: 8080,
		IP:   net.ParseIP("127.0.0.1"),
	}

	conn, err := net.DialUDP("udp", nil, &serverAddr)
	if err != nil {
		fmt.Println("Error connecting to server:", err)
		return
	}
	defer conn.Close()

	message := "Hello from client!"
	_, err = conn.Write([]byte(message))
	if err != nil {
		fmt.Println("Error sending message:", err)
		return
	}
	fmt.Println("Sent to server:", message)

	buffer := make([]byte, 1024)
	n, _, err := conn.ReadFromUDP(buffer)
	if err != nil {
		fmt.Println("Error reading from server:", err)
		return
	}
	response := string(buffer[:n])
	fmt.Println("Received from server:", response)
}

udpserver.go

package main

import (
	"fmt"
	"net"
)

func main() {
	addr := net.UDPAddr{
		Port: 8080,
		IP:   net.ParseIP("0.0.0.0"),
	}

	conn, err := net.ListenUDP("udp", &addr)
	if err != nil {
		fmt.Println("Error starting server:", err)
		return
	}
	defer conn.Close()
	fmt.Println("Server is listening on port 8080")

	buffer := make([]byte, 1024)

	for {
		n, clientAddr, err := conn.ReadFromUDP(buffer)
		if err != nil {
			fmt.Println("Error reading from connection:", err)
		}
		message := string(buffer[:n])
		fmt.Println("Received from client:", message)

		response := "Hello from server!"
		_, err = conn.WriteToUDP([]byte(response), clientAddr)
		if err != nil {
			fmt.Println("Error writing to connection:", err)
		}
	}
}