Function send_backend_request_streaming

crates/openshell-router/src/backend.rs:361–371

Build and send an HTTP request without a total request timeout. For streaming responses, the total duration is unbounded — liveness is enforced by the caller's per-chunk idle timeout instead. Connection establishment is still bounded by the client-level `connect_timeout`.

(
    client: &reqwest::Client,
    route: &ResolvedRoute,
    method: &str,
    path: &str,
    headers: &[(String, String)],
    body: bytes::Bytes,
)

/// enforced by the caller's per-chunk idle timeout instead. Connection
/// establishment is still bounded by the client-level `connect_timeout`.
async fn send_backend_request_streaming(
    client: &reqwest::Client,
    route: &ResolvedRoute,
    method: &str,
    path: &str,
    headers: &[(String, String)],
    body: bytes::Bytes,
) -> Result<reqwest::Response, RouterError> {
    let (builder, url) = prepare_backend_request(client, route, method, path, headers, body, true)?;
    builder.send().await.map_err(|e| map_send_error(e, &url))
}

/// Validation probes for a route, in preference order.
///