TCP echo server

echo.go

package main

import (
	"bufio"
	"flag"
	"io/ioutil"
	"log"
	"net"
)

func init() {
	flag.Parse()
}

func main() {
	if ln, err := net.Listen("tcp", flag.Arg(0)); err != nil {
		log.Fatalln(err)
	} else {
		defer ln.Close()
		for {
			if conn, err := ln.Accept(); err != nil {
				log.Println(err)
			} else {
				go func() {
					defer conn.Close()
					if message, err := ioutil.ReadAll(bufio.NewReader(conn)); err != nil {
						log.Println(err)
					} else {
						conn.Write(message)
					}
				}()
			}
		}
	}
}