Internet Dienste 3

WWW World Wide Web

• Hypertext und Hypermedia

• Links hier, Bilder ,
  Formulare
  
  Sound bsp.snd, Videos bsp.mpg

• URL: Uniform Resource Locator
  dienst://internet-adresse/file-name
http://www.uni-mannheim.de/index.html

• HTML: Hypertext Markup Language

   Links <a href="workshop.html">hier</a>, 
   Bilder <img src="bsp.gif" alt="bsp.gif">, 
   <form action="nix.cgi">Formulare 
        <input text size=10></form> <br>
   Sound <a href="bsp.snd">bsp.snd</a>, 
   Videos <a href="bsp.mpg">bsp.mpg</a>
  

• Integration von fast allen Internet-Diensten
  E-mail, Telnet, FTP, News, Gopher, Finger
  nicht: RPC, NFS

• Beispiele

WWW Architektur

• HTTP: Hypertext Tranfer Protokoll

• Clients: Browser
  Netscape, Mosaic, MS Explorer, Lynx,

• Server:
  HTTPD: HTTP Demon
  CERN, Apache, Netscape, Spinner

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