curl issue #14620 in which we find out that a tiny CDN naming itself "Google Frontend" has a faulty HTTP/2 implementation in regard to 4xx responses.
github.com/curl/curl/issues/14…
curl 8.9.1 reports HTTP/2 stream was not closed cleanly: PROTOCOL_ERROR for 416 · Issue #14620 · curl/curl
I did this $ curl -vvvS --fail-early -Lo go1.23.0.src.tar.gz https://go.dev/dl/go1.23.0.src.tar.gz # whoops, I didn't see if that finished. try again to be sure $ curl -vvvS --fail-early -Lo go1.23...GitHub