Re: [infinispan-dev] MyRpcDispatcher

The other problem is that Channel does not expose a public mechanism to see the current UpHandler, i.e. while Channel.up_handler is protected, there is no public Channel.getUpHandler(). If this existed, we could replace the channel.setUpHandler(...) w/a protected method like: protected void setUpHandler(UpHandler handler) { channel.setUpHandler(handler); } where ScopedRpcDispatcher can overload it using: protected void setUpHandler(UpHandler handler) { UpHandler currentHandler = channel.getUpHandler(); // NoSuchMethod if ((currentHandler != null) && (currentHandler instanceof ScopedUpHandler)) { ((ScopedUpHandler) currentHandler).add(this.scope, handler); } else { channel.setUpHandler(handler); } } We also wouldn't yet have a reference to the scope at the time this method is normally called (i.e. from MessageDispatcher's constructor) - though we could work around this by passing a null channel to the super constructor, and calling setChannel(...) at the end of our constructor.