1. Hyper Text Transfer Protocal: deliver hyper text from server to local browser etc.
  2. Based on TCP/IP
  3. Current version: HTTP/2
  4. Server - Client
  5. Client can request through GET, HEAD, POST, PUT, DELETE, TRACE, OPTIONS, CONNECT, PATCH.
  6. Transfer anything defined by Content-Type
  7. Connectionless Protocol: doesn’t maintain the connection all the time
  8. Stateless protocal: A very nice explanation

About URL

  1. Uniform Resource Locator

2. 9. No limits on length of URL by HTTP itself. However, some servers or clients do set limits.

Difference between URI and URL and URN: The Difference Between URLs and URIs checkout the Venn diagram.


How HTTP Works

HTTP Request: use Chrome Dev Tool -> Network to find out the requests, including GET and Response.

How to Request

GET  请求指定的页面信息,并返回实体主体。
HEAD     类似于get请求,只不过返回的响应中没有具体的内容,用于获取报头
POST     向指定资源提交数据进行处理请求(例如提交表单或者上传文件)。数据被包含在请求体中。POST请求可能会导致新的资源的建立和/或已有资源的修改。
PUT  从客户端向服务器传送的数据取代指定的文档的内容。
DELETE   请求服务器删除指定的页面。
CONNECT  HTTP/1.1协议中预留给能够将连接改为管道方式的代理服务器。
OPTIONS  允许客户端查看服务器的性能。
TRACE    回显服务器收到的请求,主要用于测试或诊断。


GET will attach data on the URL, while POST will attach data in the package. Thus POST is safer.

Back to top

© 2016-2018, Lei Ma | Created with Sphinx and . | On GitHub | Physics Notebook Statistical Mechanics Notebook Neutrino Physics Notes Intelligence | Index | Page Source