Implementing CORS whitelist in Caddy v2

[nicolinux (Nicolas)]

@francislavoie

Another option which is a bit easier to use and read:

(cors) {
  @origin{args.0} header Origin {args.0}
  header @origin{args.0} Access-Control-Allow-Origin "{args.0}"
}
myawesomewebsite.com {
  root * /srv/public/
  file_server
  import cors https://member.myawesomewebsite.com
  import cors https://customer.myawesomewebsite.com
}

It’s a strange coincidence, we had to implement CORS on a website yesterday and I found this solution. After installing Caddy 2.1 b1, I can confirm it works great !

When Caddy 2.1 is finalised, it should definitely be a Wiki entry.

Thanks for your help on this.