pub fn apply_transport_version(
builder: RequestBuilder,
http3_effective: bool,
) -> RequestBuilderExpand description
Apply the transport-level HTTP version override for data-plane requests.
reqwest only routes an individual request over HTTP/3 when the request
itself carries version(HTTP_3); client-level http3_prior_knowledge()
merely builds the QUIC connector. When h3 is effective, every API request
must be explicitly versioned or it silently rides TCP.