Yes, I totally agree that the current official way of checking for App
Engine presence is not great for third party libraries which don't even
necessarily run in a servlet container. We've been putting together a
solution for this and hope to make it available soon.

On Thu, Dec 3, 2009 at 1:15 PM, Jeff Schnitzer <lhori...@gmail.com> wrote:

> Why isn't there a system property that can be used to detect if a
> program is running on appengine?
>
> This is really a glaring oversight.  I would expect something like
> System.getProperty("google.appengine") to be "development" or
> "production" (or of course null).
>
> Before someone says "check the servlet context", realize that this is
> grossly inadequate - library writers do not have access to the servlet
> context.
>
> I'm trying to get the Hessian RPC library working on appengine so we
> have an easy-to-use web services protocol.  One of the first things
> the hessian java client does is teardown any keepalive connections by
> making a quick request expired at 10ms.  This terminates with a caught
> IOException in the normal world, but produces an
> ApiDeadlineExceededException in appengine.
>
> I'd like to simply short-circuit this unnecessary behavior when
> running on appengine.  I found the SecurityManager check but that
> seems unreliable.  Why isn't there a nice easy system property?
>
> Thanks,
> Jeff
>
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