pub fn client_config_with_pinning(
verifier: Arc<CertPinVerifier>,
alpn: &[u8],
) -> ClientConfigExpand description
Build a rustls ClientConfig that uses the pin verifier instead of
the normal CA-based verification. The verifier is fail-closed: only
a cert whose SPKI matches a configured pin is accepted. There is no
fallback to CA verification (pinning REPLACES CA trust, it does not
augment it — a pinned upstream that rotates its key pair MUST update
its pins).