HTTP - Message (Syntax)

About

An http message is a text document that consists of:

There are two kinds of messages:

They differ in the format of the first line, but both can have header fields and an optional body (entity).

A request followed by a response is called a fetch.

Example

Example with a get request that shows only a list of header

GET https://datacadamia.com/web/http/method HTTP/1.1
Host: datacadamia.com
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.150 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Referer: https://datacadamia.com/web/http/method
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9,nl;q=0.8,fr;q=0.7
Cookie: Session=2he81i5j7tvd5

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