Initiate sending over RPC from the server side

Hello,

I'm new to GWT RPC. I need to write something that I subscribe on the client side then on the server side it can send data to client whenever there is update.

As I read from the tutorial, I make a Service interface and a ServiceAsync interface on the client, and a ServiceImpl on the server side that implements Service.

And then, on the client side I just call service.xxx and catch the return from my AsyncCallback.

This is like I trigger the event from the client side and pull some data from the server side.

Is there a way to "push" the data from the server side and send the data to every client that "subscribes" it?

Thanks,

Larry

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