node whois example

node-whois.js

var whois = require('node-whois')
var sys = require('sys')
var exec = require('child_process').exec;
require('dotenv').config();

const dns = require('dns');

const apiKey = process.env.nodeWhoisApiKey || "123456";

let protection=0;
const maxProtection=200;
var express = require('express')
var app = express()

app.get('/', function (req, res) {

    if(req.query.apikey!=apiKey) return res.sendStatus(403);
    protection++;
    if(protection>maxProtection) return res.sendStatus(404);
    let domain = req.query.domain;
    let count=0;
    let returned = {};
    whois.lookup(domain, function(err, data) {
        returned.whois = data;

        dns.lookup(domain, { family: 4 }, (error, ip, family) => {
            if (error) {
                return res.sendStatus(404);
            }
            returned.ip=ip;
            return res.json(returned);
        });
    });    
});

app.listen(3001)