@digicat/canonical-redirector

@digicat/canonical-redirector

Redirects HTTP traffic to a configured canonical HTTPS host.

This package is perfect for running in an ALB target group, receiving HTTP traffic, or even HTTPS traffic for a non-canonical host. It supports health checks at /healthcheck, requests to which receive a 200 OK response instead of a redirect. No requests are logged, errors are not reported. Configuration is done through two environment variables:

• CANONICAL_HOSTNAME: The host to redirect to.
• PORT: The port to listen on. Defaults to 4000.

Note that .env files are not resolved.

Usage

$ CANONICAL_HOSTNAME=www.digitalcatapultcentre.org.uk PORT=4000 npm start

Then:

$ curl -v -H 'host: digitalcatapultcentre.org.uk' localhost:4000/
> GET / HTTP/1.1
> host: digitalcatapultcentre.org.uk
> User-Agent: curl/7.54.0
> Accept: */*
>
< HTTP/1.1 301 Moved Permanently
< location: https://www.digitalcatapultcentre.org.uk/
< Date: Tue, 17 Oct 2017 15:28:54 GMT
< Connection: keep-alive
< Transfer-Encoding: chunked
<