The Web: the http protocol
http: hypertext transfer protocol
Web’s application layer protocol
client/server model
client: browser that requests, receives, “displays” Web objects
server: Web server sends objects in response to requests
http1.0: RFC 1945
http1.1: RFC 2068
PC running
Explorer
Server
running
NCSA Web
server
Mac running
Navigator
http request
http request
http response
http response
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