Echo server on port 5000

echo-server.go

package main

import "net"

func main() {
	ln, err := net.Listen("tcp", ":5000")
	if err != nil {
		panic(err)
	}
	defer ln.Close()
	for {
		conn, err := ln.Accept()
		if err != nil {
			panic(err)
		}
		go func(conn net.Conn) {
			defer conn.Close()
			var packet [0xFFF]byte
			for {
				n, err := conn.Read(packet[:])
				if err != nil {
					return
				}
				conn.Write(packet[:n])
			}
		}(conn)
	}
}