package main

import (
	"io"
	"log"
	"os"
)

func initLogger() (err error) {
	f, err := os.OpenFile("server.log", os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
	if err != nil {
		return err
	}
	defer func(f *os.File) {
		err = f.Close()
	}(f)
	log.SetOutput(io.MultiWriter(os.Stdout, f))
	return nil
}