HTTP Header Fields
With each request and response, you have something called a header and a body.

The body, as a response usually is the HTML page that you are trying to load.

When you make a request, the body usually is a request form.

Types of headers
| General | Response | Request |
|---|---|---|
| Request URL | Server | Cookies |
| Request Method | Set-Cookie | Accept-xxx |
| Status Code | Content-Type | Content-Type |
| Remote Address | Content-Lenght | Content-Lenght |
| Referrer Policy | Date | Authorization |
| User-Agent | ||
| Referrer |