create a udp client in go

main.go
package main

import (
    "fmt"
    "net"
)

func main() {
    // Resolve the address to which to send data.
    addr, err := net.ResolveUDPAddr("udp", "127.0.0.1:8080")
    if err != nil {
        panic(err)
    }

    // Create a UDP socket.
    conn, err := net.DialUDP("udp", nil, addr)
    if err != nil {
        panic(err)
    }

    defer conn.Close()

    // Send a message to the server.
    msg := []byte("Hello, server!")
    _, err = conn.Write(msg)
    if err != nil {
        panic(err)
    }

    // Wait for a response from the server.
    buf := make([]byte, 1024)
    n, _, err := conn.ReadFromUDP(buf)
    if err != nil {
        panic(err)
    }

    // Print the response from the server.
    fmt.Println("Response from server:", string(buf[:n]))
}
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