HTTP – the web protocol

• Browser sends HTTP requests and then displays the results (generally HTML/image)

• Very simple protocol, with a few commands:

• • HEAD – get the headers and dates for the page
  • GET – get the html (or image or ...), parameters are part of URL (.../foo?id=4&page=3)
  • POST – encodes form parameters into the request which goes to a specific program named in FORM
  • There are more, these are the most common