pub fn fetch(url: &str) -> Result<Vec<u8>, String>Expand description
Download url (or read a local path or file:// URL). Downloads give up on a connection
after 30s and on a response that sends nothing for http_timeout (no total limit, so a
slow but healthy download finishes), and are tried 3 times on connection errors, timeouts,
429 (honouring Retry-After) and 5xx.