config.go

package main

import (
	"encoding/json"
	"os"
)

type config struct {
	Nodes      []node
	Host       string
	Port       int
	UdpVersion string
}

func (c *config) read(env string) error {
	file, err := os.Open("config/" + env + ".json")
	if err != nil {
		return err
	}
	return json.NewDecoder(file).Decode(&c)
}