AsyncContext and I/O error handling (when peer disconnects)

Question

I\'m implementing Server-Sent Events using Servlet 3.0\'s javax.servlet.AsyncContext interface.

However I can\'t understand how I should handle I/O errors like peer

Answer 1

The problem is that: ac.getResponse.getWriter().flush() does not throw IOException

So in order to get a error notification upon I/O operation you need to use ServletOutputStream instead:

try {
   ServletOutputStream out = ac.getResponse().getOutputStream();
   out.print(stuff);
   out.flush(); // throws IOException
}
catch(IOException e) {
   // handle a error
}