package main

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

type сonnection struct {
  net.Conn
}

func settingServer() сonnection {
  fmt.Println("Launching server...")
  ln, _ := net.Listen("tcp", ":8081")
  var conn сonnection
  conn, _ = ln.Accept()
  return conn
}

func main() {
  var conn = settingServer()
  for {
    message, _ := bufio.NewReader(conn).ReadString('\n')
    fmt.Print("Message Received:", string(message))
    newMessage := strings.ToUpper(message)
    conn.Write([]byte(newMessage + "\n"))
  }
}