make public interface for QWebSocketDataProcessor

I have an existing webserver app (an already open tcp socket), which I want to upgrade to a websocket channel.

It would be nice to have a way where the read/write of "bytes" is done from anywhere and the Qt-websocket component would just handle the websocket protocol (e.g. similar to what the current QWebSocketDataProcessor does, but without any blocking "read" calls),
e.g. by just passing a QByteArray to/from the "protocol engine", using some small state machine.