... (xml over tcp) for sending unsolicited data/events from the proxy to the client.
The proxy also acts as a distributor - if clients have the same dp(Query)Connects,
the connects are done once, and the proxy will forward it to the clients.
Easy example for a dpQueryConnect with a delegate:
client.DpQueryConnectSingle((object s, ArrayList a) => {
Console.WriteLine("event!);
}, "SELECT '_online.._value', '_online.._stime' FROM '*.**'");