About empty handler

[josejachuf]

Hi
What is empty handler used?
What is the reason for its existence?

let router = Router::with_hoop(cors_handler).get(hello).options(empty_handler);

[chrislearn]

We only want cors_handler executed but don't want do anything else. If we do not add .options(empty_handler), this router match will failed and returns 404 error.

[josejachuf]

My route wheel is like that and works without .options(empty_handler)

Router::new().hoop(cors_handler)
        .get(health::get_health)

[chrislearn]

Your router works with GET method, but if request with OPTIONS method, it will returns 404.

[josejachuf]

Thanks!

[josejachuf]

why always I get this warning?

2023-01-13T17:35:42.967811Z WARN salvo_core::service: Http response content type header not set uri=/api/v1/some method="OPTIONS"

My cors handles is:

let cors_handler = Cors::builder()
        .allow_any_origin()
        // .allow_origin("http://127.0.0.1:8000")
        .allow_methods(vec!["GET", "POST", "OPTIONS"])
        .allow_headers(vec![
            "CONTENT-TYPE",
            "content-type",
            "Access-Control-Request-Method",
            "Access-Control-Allow-Origin",
            "Access-Control-Allow-Headers",
            "Access-Control-Max-Age",
            "authorization",
            "Authorization",
        ])
        .build();

[chrislearn]

I will fix this, avoid give this warning when method is OPTIONS.

[josejachuf]

Thanks!