title: Java NIO (Netty): Exceptionhandling in Downstream Hanlders/Chain
body: <p>could someone please explain to me, how in netty "Downstream Exceptions" are handeled? According to the javadoc there are no Downstream exceptions:</p>
  
  <p><a href="http://docs.jboss.org/netty/3.1/api/org/jboss/netty/channel/ExceptionEvent.html" rel="nofollow noreferrer">http://docs.jboss.org/netty/3.1/api/org/jboss/netty/channel/ExceptionEvent.html</a></p>
  
  <p>Given the case that in one of my downstream handlers an exception occures OR in the I/0 Thread itself, where can these errors be catched and handeled?</p>
  
  <p>thank you very much
  tom</p>