Function warp_range::get_range_with_cb

pub async fn get_range_with_cb(
    range_header: Option<String>, 
    file: &str, 
    content_type: &str, 
    progress: fn(size: u64)
) -> Result<impl Reply, Rejection>

This function retrives the range of bytes requested by the web client. You can define a callback function for logging purpose or media access control