- serve.mjs read server.address().port in the Host checks. Once close() starts that is
null, so a request on a kept-alive connection threw and was never answered, and the test
file waited forever. The bound port is now stored on 'listening'.
- Killing only chromium's main process left its renderer and GPU children writing into the
profile, so the profile rm failed with ENOTEMPTY. Chromium now runs in its own process
group; close() and the exit hook kill the group, and the rm retries.
- teardown.test.mjs: a request sent after close() starts gets a 200.
jason.woltje
11f95842ef