package main

import (
	"io"
	"log"
	"net"
)

func main() {
	listener, err := net.Listen("tcp", "0.0.0.0:7000")
	if err != nil {
		panic(err)
	}

	for {
		go handle(listener.Accept())
	}
}

func handle(conn net.Conn, err error) {
	if err != nil {
		log.Println(err)
		return
	}
	defer conn.Close()

	var buf [1024]byte
	for {
		n, readErr := conn.Read(buf[:])
		log.Println("writing ", string(buf[:n]))
		_, writeErr := conn.Write(buf[:n])
		if writeErr != nil {
			log.Println("error when writing", err)
		}
		if readErr != nil {
			if readErr != io.EOF {
				log.Println("error when reading", err)
			}
			return
		}
	}
}