38-ProtocolsAndApplications - CS 241 Spring 2008 System...

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CS 241 Spring 2008 System Programming 1 Protocols & TCP Applications Lawrence Angrave
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CS 241 Spring 2008 System Programming 2 Case Study #1 Active FTP http://slacksite.com/other/ftp.html
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CS 241 Spring 2008 System Programming 3 Passive FTP
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CS 241 Spring 2008 System Programming 4 testbox1: {/home/p-t/slacker/public_html} % ftp -d testbox2 Connected to testbox2.slacksite.com. 220 testbox2.slacksite.com FTP server ready. Name (testbox2:slacker): slacker ---> USER slacker 331 Password required for slacker. Password: TmpPass ---> PASS XXXX 230 User slacker logged in. ---> SYST 215 UNIX Type: L8 Remote system type is UNIX. Using binary mode to transfer files. ftp> ls ftp: setsockopt (ignored): Permission denied ---> PORT 192,168,150,80,14,178 200 PORT command successful. ---> LIST 150 Opening ASCII mode data connection for file list. drwx------ 3 slacker users 104 Jul 27 01:45 public_html 226 Transfer complete. ftp> quit ---> QUIT 221 Goodbye.
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5 TCP Application – World Wide Web Origin of WWW – 1989 WWW invented by Tim Berners-Lee - software engineer working at CERN – Swiss Physics Laboratory 1993 – Marc Andreesen and his colleagues at NCSA UIUC released a graphical browser, called MOSAIC for all three major platforms: UNIX, Windows, Macintosh After release of MOSAIC, interest in Web exploded
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CS 241 Spring 2008
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  • Spring '08
  • SystemsProgramming
  • World Wide Web, Web server, Web browser, Hypertext Transfer Protocol, TCP connection, RPC stub program

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