Send client hello; support non-authed service methods

[xPaw]

Hello is required for non-authed service methods to work (otherwise it drops connection).

Non authed service method is required for CAuthentication messages.

[xPaw]

Sending client hello with the protocol version may have changed some semantics of messages like log offs or disconnects, because the were non-proto specifically due to the server not knowing the version.

EDIT: Seemingly you still get disconnected after a while.