return handleResponseHeaders()
			default:
				waitDone()
				return nil, cs.abortErr
			}
		case <-ctx.Done():
			err := ctx.Err()
			cs.abortStream(err)
			return nil, cancelRequest(cs, err)
		case <-cs.reqCancel:
			cs.abortStream(http2errRequestCanceled)
			return nil, cancelRequest(cs, http2errRequestCanceled)
		}
	}
}

// doRequest runs for the duration of the request lifetime.