package main

import (
	"bufio"
	"fmt"
	"net"
	"strings"
)

func main() {
	ln, err := net.Listen("tcp", ":1302")
	catchErr(err)
	fmt.Println("Listening on port 1302")

	conn, err := ln.Accept()
	catchErr(err)

	for {
		message, err := bufio.NewReader(conn).ReadString('\n')
		catchErr(err)
		fmt.Printf("Message received: %v", string(message))
		newMsg := strings.ToUpper(message)
		conn.Write([]byte(newMsg + "\n"))
	}
}

func catchErr(err error) (errHappened bool) {
	errHappened = false
	if err != nil {
		errHappened = true
		fmt.Println(err)
	}
	return errHappened
}