[Twisted-Python] server push data to client

hi, what could be the way(Producer/Consumer?) and simple,basic example to push data(~10Kb) from Twisted based server(that listening for incoming requests) into client side(for example FLEX) not as a response to the incoming request, but occasionally, triggered by server side??? In traditional client/server arch, the server is listening, accepting and responding to the client's requests, but here I'm looking for something that initiated from server itself and pushing data to client. Appreciate the help.