On Wed, Jul 9, 2014 at 12:48 PM, Marko Asplund <marko.aspl...@gmail.com>
wrote:
> On Wed, 09 Jul 2014 07:23 Martin Grigorov wrote:
>
> > > ...
> > > try {
> > > response = (HttpServletResponse)asyncContext;
> > >
> >
> > Maybe it is implementation detail that this cast works but usually you
> have
> > to use
> >
>
> http://docs.oracle.com/javaee/6/api/javax/servlet/AsyncContext.html#getResponse()
> > to get the response
>
> This was one of the things I was wondering about: calling
> AsyncContext#getResponse() returns a ServletResponse instance that doesn't
> implement the HTTP protocol specific sendError etc. methods.
>
Casting ServletResponse to HttpServletResponse is OK most of the time. You
can check with "instanceof" before doing the cast.
But casting AsyncContext to HttpServletResponse is way too brave.
>
> What would be the correct way to return an error response (including HTTP
> status code) to the client in this case?
>
>
> marko
>
