Web

The World Wide Web ,[object Object],[object Object],[object Object],[object Object]

WWW Background ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

WWW History contd. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

WWW Components ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Quick Aside – Web server use Source: Netcraft Server Survey, 2001

WWW Structure ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Uniform Resource Identifiers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

HTTP Basics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

HTTP Request Messages ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

HTTP Request Format ,[object Object],[object Object],[object Object],[object Object],request-line ( request request-URI HTTP-version) headers (0 or more) <blank line> body (only for POST request)

HTTP Response Format ,[object Object],[object Object],[object Object],[object Object],[object Object],status-line (HTTP-version response-code response-phrase) headers (0 or more) <blank line> body

HTTP Response Codes ,[object Object],[object Object],[object Object],[object Object],[object Object]

HTTP Headers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

HTTP/1.0 Network Interaction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

HTTP/1.1 Performance Enhancements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Persistent Connections and Pipelining ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

HTML Basics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

HTML Example <HTML> <HEAD> <TITLE> PB’s HomePage </TITLE> </HEAD> <BODY> <CENTER><IMG SRC = “bad_picture.gif” ALT = “ “><BR></CENTER> <P><CENTER><H1>UW Computer Science Department</H1></CENTER> Welcome to my goofy HomePage! … <A HREF = http://www.cs.wisc.edu/~pb/mydogs_page.html > Spot’s Page </A> </BODY> </HTML>

Web

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