28.3. Communication using HTTP
Communication between web browsers and web servers is via HTTP (Hypertext Transfer Protocol). The first version of HTTP, defined in 1990 at CERN, was a simple client–server protocol: a synchronous invocation, to the server, in which a client sends a request message to the server and awaits a response message. This version was for the transfer of raw data, while the next version HTTP 1.0 allowed MIME (Multipurpose Internet Mail Extensions) types to be specified and transferred; see Section 28.4. The most recent version at the time of writing is HTTP 1.1, decribed in the WC3's request for comment document, RFC2616.
HTTP is an application-level protocol built above TCP which is connection-oriented and reliable; see ...
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