pub fn begin_fetch_resolve(
req: i64,
status: i64,
headers: &[(String, String)],
body: &str,
) -> Option<RuntimeValue>Expand description
Deliver request req with status/headers/body: record its per-request
response, point the current-delivery cursor at it, and hand back its completion
closure for the caller to invoke. None if the request is unknown or already
FINAL (aborted/failed/delivered — the anti-double-delivery rule).