mod_cloudflare

Based on mod_cloudflare.c, this ExpressJS middleware will replace the IP variable with the correct remote IP sent from CloudFlare.

To install, simple run:

npm install mod_cloudflare --save

Usage

const express = require('express')
const app = express()

const mod_cloudflare = require('mod_cloudflare');

app.use(mod_cloudflare());

app.get('/', function (req, res) {
  res.send(`Your IP is: {$req.ip}`);
})

app.listen(3000);

Options

By default mod_cloudflare will still accept non-cloudflare connections. This can be changed by passing an object with the desired options to the mod_cloudflare constructor.

Option	Default Setting	Description
CloudFlareRemoteIPHeader	"CF-Connecting-IP"	The header which contains the original IP.
DenyAllButCloudflare	false	Deny all requests that aren't sent via CloudFlare.
CloudFlareRemoteIPTrustedProxy	[ ]	Additional array of IP addresses or ranges which are to be treated as CloudFlare IPs.
ForbiddenPage	null	Only served to denied clients. The path to serve as 403 FORBIDDEN page.