What is an Extension?

• Qualification of a normal HTTP message

  • authentication, payment, etc.

• New HTTP syntax and encoding

  • Sticky headers, binary encoding etc.

• Extensions to the ìHTTP applicationî

  • WebDAV, etc.

• HTTP-like protocols for new applications

  • RTSP, IMAP etc.

• Leaving HTTP and TCP entirely

  • Multicast etc.

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