1. Web Protocols, Technologies and Applications
CS 3870/CS 5870
Web Protocols, Technologies and Applications

2. Instructor Dr. Qi Yang Office: Ullrich 213 Home page

3. Course Work Programs: 200 points Tests : 200 points
Project : 100 points

4. Grading No Curve! Grade Total Points Percentage Grade Points
B %
B %
B %
C %
C %
C %
D %
D %
F Below
No Curve!

5. Tests All Hands-on Final Exam: Test 4
Graduating Senior: Waiving final?
GS can waive final exam (Test4)
If their grade percentage is at 82% or above on Thursday, Dec 10 so their course grade will be at least B- (79% + 3%).

6. Syllabus Any Questions?

7. What is a Computer?
Network
CPU
Output
Input
MEMORY
Storage

8. Local Network at UWP Ull 111 Res Hall Ull 213 Bears Den . . . Lab 206
File Server: J:\, S:\, O:\
Apps
Rights …
Ull 213
Bears Den
. . .
Lab 206

9. The Internet WCUT UW UWP Townsville Australia Darmstadt Germany

10. The Internet A “network of networks” Origins: Domain name system (DNS)
Kleinrock (1960s): click here
ARPANET (1969): click here
Domain name system (DNS)
Maps numeric “IP” addresses to “domain” names
1982: HOSTS.TXT
Now: distributed, hierarchical database
Core protocols: TCP/IP

11. Transmission Control Protocol /
TCP/IP
Transmission Control Protocol /
Internet Protocol
Turing Award 2004

12. Internet Applications
Simple Mail Transfer Protocol (SMTP)
Post Office Protocol (POP)
Internet Messaging Access Protocol (IMAP)
Telnet: remote terminal
FTP: File Transfer Protocol
Gopher ...
...

13. Internet Applications
Console Applications
GUI Applications

14. World Wide Web (WWW) GUI Internet Application
Information Super High Way
Business
Household
HTTP: Hyper Text Transfer Protocol
HTML: Hypertext Makeup Language
W3C - World Wide Web Consortium

15. Application Protocols
HTTP
HTTPS
SMTP
POP
IMAP
FTP
SOAP …
All are based on TCP/IP

16. A Brief History of the WWW
CERN 1989
(Geneva European Laboratory for Particle Physics)
Initial Proposal
A common and consistent user interface
Incorporation of a wide range of technologies and document types
A “universal readership”
1990: first line browser
1992: a few browsers and 50 web sites
1993: Mosaic browser for X Windows at NCSA (UIUC), 500 web sites
Since 1994: more browsers, web sites, web servers, search engines
Click here

17. WWW Basics Web sites: Web content providers Web browsers
Hypertext Transfer Protocol (HTTP)
Hypertext Markup Language (HTML)
Uniform Resource Locator (URL)
Web navigation and search tools
Gateways to non-Web resources
XML (eXtended Markup Language)
XHTML (Extensible HyperText Markup Language) …

18. What makes up a website? Three main components to every website:
Web server (always-on program listening for requests from web browsers)
Web objects (text and binary documents)
Web browser
Not really part of a website—or is it?
If a tree falls in a forest but nobody is around to hear it, does it make a sound?

19. Web browsers GUI, Client-Server application
Request content from web servers
Download and display content to user
First GUI browser
What browser do YOU use?
URL: Uniform/Universal Resource Locator

20. URL Format protocol://host:port/path Protocol
http, https, ftp, telnet, etc.
Host
IP address or name of server (DNS)
Port
default: 80
Path
Where to find the desired web object

21. HTTP Application-level protocol
For collaborative, distributed, hypermedia information systems
Client-Server
LOTC
Locate
Open
Transfer (request/response)
Close

22. HTTP Connection Request URI Method GET, HEAD, POST, PUT, DELETE
Example: GET /index.html HTTP/1.1\r\n
Server Response: 200, 403, 404, etc.
Close

23. HTML
Display data in browser using tags
HTML History
Patent

24. HTML If you don’t know HTML, don’t worry View page source
You must teach yourself HTML
Basic HTML elements

25. Non-Web Resources
Legacy systems
Databases

26. Advanced Web Technologies
CGI (Common Gateway Interface)
PHP
Java Applets
ASP.NET …

27. WWW and Windows Programs
Variables to keep track of state
WWW and HTTP
Stateless
“Universal Readership”
Web Applications
How to keep state information?

28. Due 5:00 PM, Wednesday, September 9
Program 1
Due 5:00 PM, Wednesday, September 9

29. Open Your Web Site on Xray
Start VS 2012
Open Web Site
Remote Site
Login using your UWP UserName and Password
Make sure your in domain ION or
ION/UserName
Do not try New Project or New Web Site!

30. Creating Folder Solution Explore Right Click on Web Site New Folder
Prog1

31. Creating HTML Pages Right click on Prog1 Add HTML Page Different Views
Design
Source: HTML code
Split