What's New?

• As 11-26-2000:

  An entry about filter has been posted in FAQ.

• As 11-22-2000:

  FAQ will be updated through out the weekend. Please check/read it before asking any question.

• As 11-16-2000:

  New deadline: 11:59 PM, Monday, Nov. 27, 2000. 10-point (out of 100 points) penalty each day after Nov. 27. No late project after 11:59 PM, Thursday, Nov. 30, 2000. If you turn in before original deadline (11:59, Tuesday, Nov. 21, 2000), you will receive 5 points (out of 100 points) bonus. Time is referenced to pegasus.cs.uh.edu with 5 minutes tolerance.

  Update FAQ page.

• As 11-13-2000:

  A new sample program is posted.

• As 11-09-2000:

  There was a problem with "Makefile" which had caused some errors while running "gmake". This problem has been fixed. Please get a new Makefile and the problem will go away. Also, some updates to FAQ page. Also, general grading policy is posted.

• As 11-03-2000:

  The uh.nsm.cosc6377 on news.uh.edu.

• As 11-02-2000:

  The PDF file for presentation slide is available here. Also, some updates to project web page.

• As 10-31-2000:

  A presentation about HTTP and term project will be given on Thursday, Nov. 2nd, 2000.

Objective:

You are asked to write a HTTP Proxy Server with configurable filtering.

Requirements:

The problem description is available in ( PS or PDF).

• This is a group project. Each group can consist of one or two people. If you decide to work alone, your project will be graded accordingly.
• This project will be counted 20% toward your final grade.
• You can discuss with your classmates, but no collaboration / copy between groups. And your programs will be checked by MOSS (Measure Of Software Similarity) to find any similarity. Any student found guilty of academic dishonesty will receive severe punishment.
• You are responsible for ensuring the code you write is not readable by others.

How to Submit your program?

• 1- Go to the directory where all your files are (on Pegasus);
• 2- Type: ~leila_n/submit file1 file2 ...
• 3- Follow the instructions.
• NOTE: Please submit a README file explaining how to run your program.

Q & A:

Please send your questions to Leila Naas (leila_n@cs.uh.edu) or post it to uh.nsm.cosc6377 (on news.uh.edu).

Please read FAQ for latest hints.

Grading:

• All source and sample codes can be found in ~jsteach/www/cosc6377/proxy/skel/. [Please use "gmake" to compile sample codes.]
• Sample code #1 - a clear channel TCP client - use select(). See in-line document for detail.
• Sample code #2 - a clear channel echo TCP server - use fork(). See in-line document for detail.
• Sample code #3 - a clear channel echo TCP server - use fork() with SIGCHLD. See in-line document for detail.
• Sample code #4 - How to execute filter - a pipe example See in-line document for detail.
• Related RFCs can be found in ~jsteach/www/cosc6377/proxy/doc/.
• Include files can be found in ~jsteach/www/cosc6377/include/. (If you use Makefile provided, you won't need these files.)
• Library files can be found in ~jsteach/www/cosc6377/lib/. Libraries for different platforms are provided. (If you use Makefile provided, you won't need these files.)
• Here is another program which shows how to open a socket to an HTTP server, sends a URL, and then reads the results. This program is found here. [New]

Reference/Resource:

• BSD Sockets: A Quick And Dirty Primer - a brief introduction to Sockets.
• Spencer's Socket Site: Network Programming with Sockets - A good reference on Socket programming.
• Unix Socket FAQ - Frequently Asked Questions about programming with sockets in UNIX environments. [new]
• BSD Sockets - a more detail introduction to Sockets with examples.
• Davin's collection of UNIX programming links - an excellent resource for UNIX programming (including Sockets).
 
• A simple Socket example
• The World of select() - an introduction to select() which you might need for this project.
• Socket Programming - Part of Advanced Systems Programming, Univ. of Wolverhampton, UK - with plenty of examples and on-line man pages. [new]
• Unix Programming FAQ Question about General File handling (including pipes and sockets).
• Asynchronous Socket Programming - Good comparison of Asynchronous Socket Programming using fork, threads, select, etc. Although this page is about Python, it still a good read.
 
• A great UNIX network programming reference book, "UNIX Network Programming," by W. Richard Stevens, Prentice Hall, 1990 and 1998 (vol. 1). (ANDERSON/RESERVES QA76.76.O63 S755 1990 / 1998 v.1).
• Another book about client/server programming is "Power Programming with RPC," by John Bloomer, O'Reilly, 1991. (ANDERSON/RESERVES QA76.8.U65B4 1991 3-WK LOAN). You can find some sockets programming example from this book.
• If you want to know how sockets is implemented, you should check out "TCP/IP Illustrated, Vol. 2 - The Implementation," by Gary R. Wright and W. Richard Stevens, Addison-Wesley, 1995.

Last modified: November 26, 2000.