Hi Dean,

Are you trying to encode an exception to throw it back to the client
side? AFAIK, you can just throw a IsSerializable exception in your
code and GWT-RPC will transfer the said exception to the client side
for you.

--
Arthur Kalmenson



On Thu, Dec 18, 2008 at 12:55 AM, deanhiller <[email protected]> wrote:
>
> I have the following code in a servlet filter....
>
>                GwtSessionTimeout timeout = new GwtSessionTimeout(
>                                "Session timed out.  You need to redirect to 
> the url in getUrl
> function",
>                                url);
>                try {
>                        String payload = 
> RPCServletUtils.readContentAsUtf8(request, true);
>                        RPCRequest rpcRequest = RPC.decodeRequest(payload);
>                        payload = RPC.encodeResponseForFailure(null, timeout);
>
>                        boolean gzipEncode = 
> RPCServletUtils.acceptsGzipEncoding(request)
>                                        && shouldCompressResponse(request, 
> response, payload);
>
>                        ServletContext servletContext = request.getSession
> ().getServletContext();
>                        RPCServletUtils.writeResponse(servletContext, 
> response, payload,
> gzipEncode);
>
>                } catch (SerializationException e) {
>                        throw new RuntimeException("Exception", e);
>                } catch (ServletException e) {
>                        throw new RuntimeException("Exception",e);
>                }
>
> The browser(firefox) says "This application is out of date, please
> click the refresh button on your browser."
>
> If I change
> payload = RPC.encodeResponseForFailure(null, timeout);
> to
> payload = RPC.encodeResponseForFailure(rpcRequest.getMethod, timeout);
>
> it fails with UnexpectedException like GwtSessionTimeout was not a
> RuntimeException, but it is a RuntimeException so it should work and I
> expect the aysncCallback.onFailure to be called, but it doesn't work.
>
> Here is my GwtSessionTimeout....
> public class GwtSessionTimeout extends RuntimeException implements
> IsSerializable{
> }
>
> why isn't this working?
> later,
> Dean
>
>
>
> >
>

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