Referrer 

Node referrer parser and tools (with express middleware).

DO NOT USE

How To Use

Install

npm install referrer

Usage

var referrer = require('referrer');
referrer.parse('https://twitter.com/MikeDiarmid', function (result) {
    console.log(result);
    // Returns:
    /*
      {
        "type": "social",
        "name": "Twitter",
        "domain": "twitter.com",
        "url": "http://twitter.com/MikeDiarmid",
        "shortened": "http://twitter.com/MikeDiarmid",
        "path": "/MikeDiarmid"
      }
    */
});

Express.js Middleware

var referrer = require('referrer'),
    express = require('express');

var app = express();

// use middleware (creates a 'referrer' property on 'req')
app.use(referrer.middleware);

app.use(app.router);

app.get('/', function (req, res, next) {
  return res.send(req.referrer);
});

var port = 8000;
app.listen(port);
console.log('Server listening on port : ' + port);

Default Matchers

Social

• Facebook
• Twitter
• Google+
• Pinterest
• LinkedIn

Search

• Google
• Bing
• Yahoo
• Baidu
• Yandex
• Naver
• Daum
• Nate

Email Clients

• Gmail
• Yahoo
• Hotmail
• Naver
• Daum

Ads

• Bing
• Google
• Yahoo

Internal

Internal referrers occur when a visitor navigates between two pages on the same domain. Example: http://site.com => http://site.com/about

Link

If there is a referrer present but it's unrecognized, we'll just call it a link referrer.

Direct

When a visitor navigates to a site by typing in the url into the address bar, document.referrer is blank. This is called a direct referral.

Add Default Matchers

Matchers help identify and attach more semantic information to referral sources. If you'd like to help with adding the hundreds of social, search, ad, and other referral sources not matched yet then see below.

To add matchers:

1. Using existing matchers as an example, create your matcher at /lib/matchers.json.
2. Add your test cases to the test cases file.
3. Run and confirm that your test cases pass: npm test
4. Add your matcher to the readme.
5. Submit your pull request!

OR

• Submit a Feature Request Issue with the details of the referral source and I'll add it.

Use Custom Matchers

• Coming soon.

Disable Default Matchers

• Coming soon.