hostname "localhost"
pid      12345
req      {"id": 6789, "method": "GET", "path": "api/check", "host": "foo.bar", "headers": {"host": "bar.baz", "user-agent": "browser"}}
res      {"status_code": 200, "header": {"content-type": "text", "content-encoding": "plain"}}
empty1   {}
empty2   []
wrapper  {"empty3": {}, "emtpy4": []}
