Custom 400 and 408 responses

[kpcyrd]

I'd like to modify the http responses. It seems those are handled differently and both 400 and 408 bypass the regular middleware. Is there a way to hook custom code into this somehow?

I've tried ErrorHandlers but it didn't work:

let app = App::new()
    .wrap(
        ErrorHandlers::new()
            .handler(http::StatusCode::BAD_REQUEST, render_err)
            .handler(http::StatusCode::REQUEST_TIMEOUT, render_err)
    )