Classes: BonjourBrowserImpl, BonjourResponderImpl, BonjourResponderImplFactory, EventLoop
The DNSSDBrowser implementation for Bonjour. 
The DNSSDResponderImpl implementation for Bonjour.
A factory for BonjourResponderImplFactory objects.
The EventLoop class monitors all sockets used by Bonjour (for the connection
between the client and the daemon) in a thread and drives the
Bonjour machinery.