Function forward_request 

pub async fn forward_request(
    upstream: &UpstreamClient,
    url: &str,
    method: Method,
    headers: &HeaderMap,
    body: &Bytes,
    is_streaming: bool,
) -> Result<Response, Error>

Send a request to the upstream server, forwarding relevant headers.

For streaming calls we still apply the per-request reqwest timeout: the axum-edge TimeoutLayer (tower-http) cancels at response start and can’t see mid-stream stalls. For non-streaming calls the tower layer handles timeout budget end-to-end, so no reqwest timeout here.