pub fn get_cors_allow_headers<T, O, F>(
    headers: impl Iterator<Item = T>,
    requested_headers: impl Iterator<Item = T>,
    cors_allow_headers: &AccessControlAllowHeaders,
    to_result: F
) -> AllowCors<Vec<O, Global>> where
    T: AsRef<str>,
    F: Fn(T) -> O, 
Expand description

Validates if the AccessControlAllowedHeaders in the request are allowed.