HTTP (understand URL)

HTTP-URL

• URL is a Uniform Resource Locator, is the standard representation of resource addresses on the Internet

• URL components:

  • Protocol header
  • Username: Password (FTP)
  • Host name (domain name). Three domain names. Secondary domain name. Top Level Domain / [IP]
  • The port number
  • Directory / file name suffix format
  • Parameter value =
  • Mark
  • ……

• URL standard format:

  Protocol: // www domain address:? Port number / directory / file suffix parameter = value # sign

• URL-encoded format:

  Range: [0-9 AZ AZ], [ $ - * _ + '().! ]

  Only URL-encoded within a range of symbols and codes, it can be directly, or it will be encoded symbols intent to change

Hexadecimal encoding format in the URL encoding, \ X (\ x) as a percent sign%