Http

TODO:

clean this up

TODO:

add section for headers, CORS, Content Security Policy, etc

Documentation

MDN HTTP overview	https://developer.mozilla.org/en-US/docs/Web/HTTP/Overview
http headers	https://en.wikipedia.org/wiki/List_of_HTTP_header_fields

HTTP Protocol Anatomy

The HTTP protocol is composed of requests and responses. At the top of an HTTP message is a header with information about the sender (ex: operating system, character-set, ip-address, port, ...). The header is followed by the body of the message (called a resource). Resources are generally either files, or responses from server-side CGI scripts.

Skeleton of HTTP protocol:

<initial line, different for request vs. response>
Header1: value1
Header2: value2
Header3: value3

<optional message body goes here, like file contents or query data;
 it can be many lines long, or even binary data $&*%@!^$@>

# source: https://www.jmarshall.com/easy/http/

Request/Response Line

This is the first line in the header, and it varies slightly depending on the type of method the HTTP message is using.

request

# <method>   <local path of file>   <http version>
GET      /path/to/file/index.html    HTTP/1.0

response

# <http version>  <status-code>  <status-phrase>
HTTP/1.0          200            Ok
HTTP/1.0          404            Not Found

HTTP Cookies

See http cookies.

Notes

http protocol

http headers

http statuses

http cookies