Making our own preflight request against the server with Curl (HTTP OPTIONS) will not give us any headers in the reponse - only the 200 OK.

Hm, I do get:

$ curl -X OPTIONS <http://127.0.0.1:4466/check> -i
HTTP/1.1 200 OK
Allow: GET, OPTIONS, POST
Date: Mon, 22 Nov 2021 11:42:17 GMT
Content-Length: 0

Yes, will do

e.g.

serve:
  read:
    host: 0.0.0.0
    port: 4466
    cors:
      enabled: true
      allowed_origins:
        - "*"
      allowed_methods:
        - "GET"
        - "POST"
        - "PUT"
        - "PATCH"
        - "DELETE"
      max_age: 10
      debug: true

gives me the same

OPTIONS

response

Thx