(1) Go to the directory: 

      /proj/demsys/com3360/f97/rixin/project

(2) Set your enviroment variable CLASSPATH

    CLASSPATH = ./gen:.:/proj/demsys/demjava/demjava.jar

(3) Run the program:

     java Main



After above three steps, your will see a java window.

This window has a menu bar which has two menus "File"
and "Command", and two text areas.

In the "File" menu, you can create, open or save a
script file. The script is just a plain text file.

In the "Command" menu, you can run a script command
or stop the running of current command. 

If you waint to run a script command, you can click the
"RunScript" menu item in the "Command" menu.

Before you run a command, you have to use your mouse to
select the command you want to run from the bottom text 
area which has white background color. Each time you can 
only run one command.

If you want to stop a currently running comand, you can 
click the "stop" menu item in the "Command" menu.

The top text area is used for displaying the data which
is received by running the command you seleced. You can
not edit the content of this text area.

The bottom text area is used for editting script. You can
type in your commands and save thems for later uses. Of
course, you have to save the file in a directory that you
have the write permision.  You also can load a previous 
saved script into this text area.Before running the command, 
do not forget to select the command first by draging your mouse. 

If you have any question in using this program, please
do not hesitate to contact us:

emai: rixin@ccs.neu.edu or
      xren@ccs.neu.edu




P.S: 

  There is file named "test.script" in directory:
     /proj/demsys/com3360/f97/rixin/project

  There are 10 test cases in this script file. The following
  is the descripting of these examples.


     Test 1:

         url("http://www.neu.edu/")

       This command simply attempts to fetch the html file 
       from www.neu.edu

     Test 2:

         url("http://www.ccs.neu.edu")

       This command simply attempts to fetch the html file 
       from www.ccs.neu.edu

     Test 3:

         get("http://www.altavista.digital.com/cgi-bin/query",
              pg="q" what="web" q="java")

       This command looks up the word "java" on the AltaVista
       search engine using HTTP GET method.

     Test 4:

         post("http://www.dbc.com/cgi-bin/htx.exe/squote",
               source="dbcc" TICKER="ticker" format="decimals"
                tables="table")

       This command looks up stock quotes on www.dbc.com using
       HTTP POST method.
       

    Test 5:
 
        timeout(10,stall)

      This command just wait 10 seconds

    Test 6:

        limit(1,1,url("http://www.cmu.edu"))

      This command gives the url connection 1 second start-time
      and force the connection to fail if the rate ever drops
      below 1 KB/Second. 

    Test 7:

       limit(1,10,url("http://www.cmu.edu"))

      This command is just like the above example except it
      require a higher rate 10 KB/Second.

    Test 8:

       repeat((url("http://www.cs.cmu.edu/~rowan")?timeout(10,stall)))

      This command repeatedly tries to fetch the URL, but
      waits 10 seconds between attempts.

    Test 9:
 
       (url("http://www.cs.umd.edu/~pugh/popl97/") |
        url("http://www.diku.dk/popl97/"))

      This command atempts to fetch the POPL'97 conference
      page from one of two alternate sites. Both sites are
      attempted concurrently, and the result is that from
      whichever site successfully completes first.

    Test 10:

       (repeat(limit(1,1,url("http://www7.conf.au/"))) |
       (timeout(20,stall) ?
          url("http://www.cs.cmu.edu/~rowan/failed.txt")))


      This command attempts to fetch the WWW7 conference
      page from Australia. If the fetch fails or the rate
      ever drops below 1 KB/second, than it starts again.
      If the page is not successfully fetched withis 20
      seconds, then a site know to be easily reachable
      is used to retrieve a failure message.