If this clientProperty is send with ConnectQos the clientProperties are
copied to the SessionInfo.remoteProperty map (which are manipulatable by jconsole and EventPlugin)
The SOCKET protocol can support zlib compression with streaming compression
A partial flush means that all data will be output,
but the next packet will continue using compression tables from the end of the previous packet.
This client tests the method subscribe() with a later publish() with XPath query.
The subscribe() should be recognized for this later arriving publish().