HTTP

• Good example of stateless (messaging) protocol.
  • Each request may be isolated.
  • Client and server context (authentication credentials and cookies) communicated in each request.
  • Pipelining provides optional economy of connections.
• Models filesystem functionality.
  • GET - retreive an object
  • PUT - replace an object
  • POST - "create" an object
  • HEAD - get directory entry for an object
• Uses MIME for object type identification.