Golang echo server

main.go

package main

import (
	"log"
	"net"
)

func main() {
	ln, err := net.Listen("tcp", ":8081")
	if err != nil {
		log.Fatalf("Listen failed: %v\n", err)
	}

	for {
		conn, err := ln.Accept()
		if err != nil {
			log.Fatal("Accept failed: %v\n", err)
		}
		go handleConnection(conn)
	}
}

func handleConnection(conn net.Conn) {
	defer conn.Close()

	b := make([]byte, 1024)
	_, err := conn.Read(b)
	if err != nil {
		log.Fatalf("Read failed: %v\n", err)
	}

	_, err = conn.Write(b)
	if err != nil {
		log.Fatalf("Write failed: %v\n", err)
	}
}