HTTP Learning Notes

Each message consists of three parts: starting line, header, body
(both the starting line and the header are ASCII text delimited by rows.) Each line ends with a two-character line termination sequence, including a carriage return (ASCII code 13) and a newline (ASCII code)) (\ r \ n)

Format of Request message:
<method><request-url><version>

<entity-body>

Get/test.txt http/1.1accept:text/*host:www.baidu.com

Format of the response message
<version><status><reason-phrase>

<entity-body>

http/1.0 okcontent-type:text/plaincontent-length:19hi! I ' m a message!

Common HTTP methods

Method	Describe	Whether the body is included
GET	Get a copy of a document from the server	Whether
HEAD	Get the header of the response message from the server only	Whether
POST	Send data to the server that needs to be processed	Is
PUT	Store the principal part of the request on the server	Is
TRACE	Tracking of messages that may go through a proxy server to the server	Whether
OPTIONS	Decide which methods can be executed on the server	Whether
DELETE	Delete a document from the server	Whether

Common HTTP status Codes

HTTP Learning Notes