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": []
}
