Interface HttpRequest

Optional request body (already serialised).

Hard cap on the response body size in bytes; the request aborts if exceeded.

Always "manual" from the engine: a transport must not follow redirects but return the 3xx as it came (fetch(url, { redirect: req.redirect })). The engine follows them itself and decides per hop where credentials may go; a response whose url shows the transport went to another origin is rejected.

Aborted when the engine's time limit (timeoutMs) passes. A transport should stop the request then (fetch(url, { signal })); the engine rejects at the deadline either way, and enforces maxResponseBytes on the body it gets back, so neither limit depends on it.

Timeout for the whole request, response body included, in milliseconds.

Fully-qualified absolute URL.