#Nodejs - X-Forwarded-Proto header

X-Forwarded-Proto

X-Forwarded-Proto on MDN

To identify if a connection coming to your server is using HTTP - Hypertext Transfer Protocol or HTTPS - Hypertext Transfer Protocol over SSL / TLS, you can check X-Forwarded-Proto header of the request.

Definitions on MDN

X-Forwarded-For is the standard header to identify the original IP address of a client that connects to a server proxy or load balancer.

X-Forwarded-Proto is the standard header to identify the protocol used by the client to connect to a server proxy or load balancer.

X-Forwarded-Host is the standard header to identify the original host requested by the client in the Host HTTP request header.

Node.js

...
var app = express();
var checkProtocol = function (req, res, next) {

  console.log(req.headers['x-forwarded-for']); 
  console.log(req.headers['x-forwarded-host']); 

  console.log(req.headers['x-forwarded-proto']); 

  console.log(req.headers.host);
  console.log(req.url);

};

app.use(checkProtocol);
...

Thanks for reading!

Jun