Caddy server: enable CORS for any domain

Caddyfile

(cors) {
	@cors_preflight method OPTIONS

	header {
		Access-Control-Allow-Origin "{header.origin}"
		Vary Origin
		Access-Control-Expose-Headers "Authorization"
		Access-Control-Allow-Credentials "true"
	}

	handle @cors_preflight {
		header {
			Access-Control-Allow-Methods "GET, POST, PUT, PATCH, DELETE"
			Access-Control-Max-Age "3600"
		}
		respond "" 204
	}
}

:80 {
  import cors {header.origin}
}

You legend! I've been trying to figure this out for ages, many thanks!

Thank you, this helped.

do I nest this at my root inside my config file or per domain?

Think of this example as a macro that you can use anywhere you work with routing.

Think of this example as a macro that you can use anywhere you work with routing.

Got it to work but well it really took me nuts looking around for such, no even sufficient resources on the topic!