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 disconnect.
For a given AsyncContext ac = request.startAsync(), I can call ac.getResponse().getWriter().print(something) and then ac.getResponse.getWriter().flush() and it works fine. However when a client disconnects, I don't get an error - even if I attach a listener, its onError method is not called.
I tested it with both Jetty 8 and Tomcat 7 and it seems that the disconnect from the client is not reported back to the application.
What can be done to detect a communication error?