Whois lookup script written in Golang for .ir domains

ir-whois.go

package main

import (
	"fmt"
	"net"
)


/*************************************************************************

Author:      Mahdyar

Github: https://github.com/mahdyar

*************************************************************************/

func whois(domainName string) string {
	server := "whois.nic.ir"
	conn, err := net.Dial("tcp", server+":43")

	if err != nil {
		fmt.Println("Err!")
	}

	defer conn.Close()

	conn.Write([]byte(domainName + "\r\n"))

	buf := make([]byte, 1024)

	result := []byte{}

	for {
		numBytes, err := conn.Read(buf)
		sbuf := buf[0:numBytes]
		result = append(result, sbuf...)
		if err != nil {
			break
		}
	}

	return string(result)
}

func main() {
	result := whois("mahdyar.ir")
	fmt.Println(result)
}