Wrangles the x-forwarded-for header value to get a best guess client ip address (left most non private ip)
npm install x-forwarded-for-wranglerWrangles the x-forwarded-for header value to get a best guess client ip address (left most non private ip)
When using X-Forwarded-For, the assumption is that the left most ip address is the originating client.
This is however often not the case when a corportate network or a public wifi is being used.
In this case the rule "Always use the leftmost non-private address" is the best practice.
Private ip ranges are:
- 10.0.0.0 – 10.255.255.255
- 172.16.0.0 – 172.31.255.255
- 192.168.0.0 – 192.168.255.255
This module inplements the points discussed here Wrangling the x forwarded for header by Rod Vagg
`` javascript
var getClientIp = require('x-forwarded-for-wrangler');
getClientIp(request.headers['x-forwarded-for'])
``