If Pushpin is told by the web application to hold a request open, then it does not send anything to the client (at least not in the long-polling case. streaming

If Pushpin is told by the web application to hold a request open, then it does not send anything to the client (at least not in the long-polling case. streaming works different but I've yet to write about it). So when the application publishes data at a later time, it is the first payload the client sees.