The protocol version of the client.

The framebuffer for the VNC session.

Information about the client's most recent framebuffer update request. This may be null if the client has no framebuffer request queued.

Lock this before performing any framebuffer updates.

true if the server is connected to a client.

The max rate to send framebuffer updates at, in frames per second. The default is 15.

Store anything you want here.