Appearently its not possible to get headers if they are defined multiline

[ta3pks]

I am trying to communicate with an API which sets multiple Set-Cookie headers but i am able to only read the first one using

        res.headers()
                .get("Set-Cookie")
                .map(|val| val.to_str().unwrap_or_default())
                .unwrap_or_default()
                .to_string(),

[sagebind]

Try using get_all(); you should see each instance of the response header as a separate value.