Developing a UDP client

This section demonstrates how to develop a UDP client that can interact with UDP services. The code of udpC.go is as follows:

package main
import (
    "bufio"
    "fmt"
    "net"
    "os"
    "strings"
)
func main() {
    arguments := os.Args
    if len(arguments) == 1 {
        fmt.Println("Please provide a host:port string")
        return
    }
    CONNECT := arguments[1]

This is how we get the UDP server details from the user.

    s, err := net.ResolveUDPAddr("udp4", CONNECT)
    c, err := net.DialUDP("udp4", nil, s)

The previous two lines declare that we are using UDP and that we want to connect to the UDP server that is specified by the return value of net.ResolveUDPAddr(). The actual connection is initiated using net.DialUDP().

    if err != nil {
        fmt.Println(err)
        return
    }
    fmt.Printf("The UDP server is %s\n", c...