On Thu, 2008-11-06 at 18:04 +0530, hemant wrote: > On Wed, Nov 5, 2008 at 6:43 PM, Oleg Kalnichevski <[EMAIL PROTECTED]> wrote: > > On Wed, 2008-11-05 at 18:02 +0530, hemant wrote: > >> Hi, > >> > >> I am using httpcore-nio 4.0 beta 2, client extensions for consuming a > >> web service which uses http push. I am quite perplexed by the behavior > >> of library where its eating all the throw exceptions thrown in any of > >> the callback methods silently. > >> > > > > They are not. In the asynchronous I/O model all events including > > exceptions can be reported to the caller through a callback interface > > only. One needs to provide the protocol handler with an instance of > > EventListener in order to get notified of I/O and protocol errors. > > > >> Case in point, I am instantiating a ConsumingEntity in > >> responseEntity() call, for handling responses asynchronously. > >> Someitmes, my code in consumeContent() method throws unhandled > >> exception, which is silently ignored. > >> > >> Is this the default behaviour? I am using this library from scala. > >> > > > > Yes, it is, unless an instance of EventListener is injected to the > > protocol handler. > > Well, I do have EventListenter attached. So all unhandled exceptions > are logged in as IOException (even though exception raised inside > attached callback methods is something else ?). Anyways, thanks for > the pointer. > >
One needs to differentiate two types of exceptions: (1) I/O and HTTP protocol exceptions that occur in the context of one particular connection, which usually result in termination of that connection but do not affect other connections and the I/O reactor itself (2) Runtime and I/O connections that are fatal and usually result in termination of the I/O reactor along with all active connections. What kind of exception are you referring to? At any rate, HttpCore should _never_ ever silently discard exceptions (barring a few special cases such as a force-shutdown of a Socket) > > > > HttpCore NIO is quite complex and poorly documented at the moment. I am > > working on a tutorial to improve the situation, but it is still > > incomplete and not so well written. > > > > http://wiki.apache.org/HttpComponents/HttpCoreTutorial > > Hmm, I wasn't aware of existance of above page, thanks again. But I > think, javadoc would with inline documentation will be nicer solution. > Do you accept documentation patch? (Now that, I am somewhat familiar > with NIO API and internal implementation?) > Happily! I'd be delighted Oleg > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
