dns-fast-resolver

A custom dns.lookup based on dns.Resolver with timeout and cancellation handlers.
This is intendent to be used as replacement for the standard dns.lookup in cases when more than 100 connections are required. Currently, socket.connect uses dns.lookup by default which is not intended for concurrent request (see Implementation considerations).
Under the hood, this function performs a DNS query on the network and the results may differ from ping and dns.lookup.


Table of contents

---
- Installation
- How to use
- API
- Speed test
- Testing

Installation

---
``
$ npm install dns-fast-resolver --save
`
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How to use

---

With request module
`js
const request = require('request')
const { fastResolver } = require('dns-fast-resolver')

request({
url: 'http://google.com',
method: 'GET',
lookup: fastResolver
}, (error, response, body) => {
// ...
})
`

Direct usage
`js
const { fastResolver } = require('dns-fast-resolver')

fastResolver('google.com', {}, (error, address, family) => {
// ...
})
`

Resolving IPv4 addresses only, specify param {family: 4}. In that case, you will avoid
spending time on useless searching for IPv6. Apply the same technique if you are looking for IPv6 addresses only.

`js
fastResolver('google.com', {family: 4}, (error, address, family) => {
// address === "172.217.165.14"
// family === 4
});
`

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API

$3

> Uses same definition as dns.lookup

* hostname When hostname is an IP address, the callback returns the same IP value without making any attempt to resolve it.
* options |