Parses Forwarded headers according to RFC 7239.
npm install 7239[![Build status][ci-image]][ci]
A module to parse Forwarded headers according to [RFC 7239][].
``javascript
const sttn = require('7239');
sttn.parseForwardedHeader('for=203.0.113.72;proto=https')
// [{ for: '203.0.113.72', proto: 'https', by: null, host: null }]
sttn.parseForwardedHeader('for=[2001:db8::39]')
// null
app.use(sttn.middleware);
`
The middleware is compatible with [Connect][] (and therefore Express).
It adds a forwarded property to the request, with the value of the last{ for: null, proto: null, by: null, host: null }`
forwarded element or
if no such object exists or if the header is invalid.
[RFC 7239]: https://tools.ietf.org/html/rfc7239
[Connect]: https://github.com/senchalabs/connect
[ci]: https://travis-ci.org/charmander/7239
[ci-image]: https://api.travis-ci.org/charmander/7239.svg