[Nginx] Detailed explanation of HTTP protocol

1. HTTP

 Two, URI

Official Website Links: Identifying Content on the Internet - HTTP | MDN

Knowledge points:

• URI：
  • Introduction 
  • URL
    • URL is used to locate
    • example
  • URN
• Three relationship diagram
• Syntax for Uniform Resource Identifiers ()
  • protocol
  • the host
  • port
  • path
  • Inquire
  • fragment
  • example

3. Overview of HTTP protocao

• Knowledge points:
  • overview
    • icon
    • overview
    • request

     

  • component system
  • message

   

4. HTTP headers

Usage of wget debug