possible tomcat 7.0.47 jsr-356 bug: NULL pointer being thrown when DecodeException is caught in PojoMessageHandlerWholeBase.onMessage

[Bob DeRemer]

I am testing what happens when Encode/Decode Exceptions occur during JSR-356 
communication and found that in the following code in onMessage, the 
((WsSession)session) is NULL.  As a result, the actual DecodeException (cause) 
is lost.

       // Can this message be decoded?
        Object payload;
        try {
            payload = decode(message);
        } catch (DecodeException de) {
            ((WsSession) session).getLocal().onError(session, de);
            return;
        }


Tracing this further up the stack, I found that Util.getMessageHandlers is 
initializing it and passing NULL in for the session:

            if (decoderMatch.getTextDecoders().size() > 0) {
                MessageHandlerResult result = new MessageHandlerResult(
                        new PojoMessageHandlerWholeText(listener, m, null,
                                endpointConfig,
                                decoderMatch.getTextDecoders(), new Object[1],
                                0, false, -1, -1),
                        MessageHandlerResultType.TEXT);
                results.add(result);
            }

Is this a bug, or do I need to do something else to get this internal session 
initialize - in addition to calling: addMessageHandler(this) in the onOpen of 
my Endpoint-derived class?

Thanks,


Bob DeRemer
Senior Director, Architecture and Development

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