HTTP Status Code 103

{
  "code": 103,
  "title": "Early Hints",
  "description": "Used to return some response headers before final HTTP message.",
  "category": "Informational",
  "details": "Helps improve performance by sending preliminary headers before the full response.",
  "source": "https://thehttp.in/",
  "author": "https://me.thehttp.in/"
}