Simple Implement to integrate Node js with TOR to change IP address in the run time

TOR is a group of volunteer servers that allows people to access internet from different ip, therefore this is useful for programmers whom looking to use different IP’s  for their apps or requests to be private or to avoid blocking.

Scrapping Rules

Web scraping is a lot of fun, but make sure you are following the commonly accepted rules of web scraping:

  1. Make sure you’re following the target site’s Terms of Service. This means respecting robots.txt and any other restrictions there may be.
  2. Limit your requests. Scraping bots can navigate webpages much faster than normal humans, and you don’t want to accidentally DOS a site with an out of control scraper.
  3. Be nice to the server. If you don’t need images, modify your scraper so it doesn’t download images. If you want to be really nice to the server, put your e-mail address in the scraper’s HTTP headers so the server admin can contact you if your scraper is giving them a problem.

However in this blog i would share the steps to run your Node js app with TOR and ability to change IP in the run time.

Update NodeJS

First of all we have to make sure that we have Nodejs version 6, and if we don’t we can upgrade the current version using the following code

curl -sL https://deb.nodesource.com/setup_6.x | sudo -E bash -
sudo apt-get install -y nodejs

Update the last NPM

sudo npm install npm@latest -g

Install TOR and configuration

we install the tor service using the following code

sudo apt-get install tor

also install the tor request library for Node JS

sudo npm install tor-request

Generate the hash password by running the following code

tor --hash-password mypassword

The last line of the output contains the hash password that you copy paste into torrc

So, update the torrc with the port and the hashed password

sudo nano ./etc/tor/torrc

Update the port and the insert the hashed control password

ControlPort 9051
HashedControlPassword 16:872860B76453A77D60CA2BB8C1A7042072093276A3D701AD684053EC4C

Restart the TOR

/etc/init.d/tor restart

Now TOR should be up and running, we should write our Node js app.

Node JS App

the follow app present a quick view of how we can request and change ip in the run time

var tr = require('tor-request');
tr.TorControlPort.password = 'mypassword';

var printTOR_IP = function () {

  tr.request('https://api.ipify.org', function (err, res, body) {
  if (!err && res.statusCode == 200) {
      console.log("Your public (through Tor) IP is: " + body);
   }
});
};

//print current ip

 printTOR_IP();

//renew to new ip
tr.renewTorSession(function (err, msg) {
     if (msg) {
         printTOR_IP();
      }
});

Till the next blog, Enjoy !

1 COMMENT

LEAVE A REPLY