Re: [Openchat-devel] Stress testing for openchat

[Jing Xu <rob...@gm...>]

On Fri, Aug 23, 2013 at 7:52 PM, Jing Xu <rob...@gm...> wrote:

> Hi,
>
> My name is Jing Xu. I am a student from University of Texas at Arlington,
> United States.
>
> I am developing a software testing tool to detect thread stress
> vulnerability of server application. And our tool detects the vulnerability
> on your openchat in following main function:
>
>
> public static void main(String a[]) throws Exception {
>
>   loadProps();
>
>   printProps();
>
>   int port=Integer.parseInt(getProperty("CHAT_SERVER_PORT"));
>
>   if (a.length > 0)   port=Integer.parseInt(a[0]);
>
>   for (int i=0; i < Integer.parseInt(getProperty("CHAT_SERVER_WORKERS"));
> i++) {
>
>     Worker w=new Worker();
>
>     (new Thread(w,"worker #" + i)).start();
>
>     threads.addElement(w);
>
>   }
>
>   try {
>
>     ServerSocket ss=new ServerSocket(port);
>
>     do {
>
>       java.net.Socket s=ss.accept();
>
>       Worker w=null;
>
> synchronized (threads) {
>
>         if (threads.isEmpty()) {
>
>           Worker ws=new Worker();
>
>           ws.setSocket(s);
>
>           (new Thread(ws,"additional worker")).start();
>
>         }
>
>  else {
>
>           w=(Worker)threads.elementAt(0);
>
>           threads.removeElementAt(0);
>
>           w.setSocket(s);
>
>         }
>
>       }
>
>     }
>
>  while (true);
>
>   }
>
>  catch (  BindException e) {
>
>     p("Could not open the ServerSocket. Propably the address (port:" +
> port + ") is already in use.");
>
>   }
>
>   System.exit(1);
>
> }
>
> Is it possible that worker will be created with unbounded times? Thanks
> advanced for your help.
>
> Best,
> Jing
>