From: tm jee <tmjee1_at_gmail.com>
Date: Tue, 10 Dec 2013 23:50:47 +1100

Hi guys,


On SWChan's blog (
https://weblogs.java.net/blog/swchan2/archive/2011/09/08/startasync-servlet-30)
it
says

 AsyncListener#onStartAsync(AsyncEvent) will be invoked when the
AsyncContext is reinitialized, for instance, when AsyncContext#dispatch() is
invoked.

In the spec (3.1) it is mentioned that

 java.lang.IllegalStateException should be thrown
if AsyncContext#startAsync() method is called again within the scope of the
same dispatch


When i have say servlet A and servlet B.

In Servlet A I do

   AsyncContext ac = req.startAsync();
   ac.addListener(myAsyncListener1);
   ac.start(new Runnable() {
       public void run() {
           ac.dispatch("/b"); // /b is mapped to Servlet B
       }
   });


In Servlet B can I start another AsyncContext ?

I guess i am wondering what is the scope of "the same dispatch" in this
context? Would be glad if someone could point out what i've missed in the
spec.

Thanks
Toby