Echo Methods and ByteBuf decode working.

Madhu's fix corrected the buffer return truncating in ConnectionService.
Classes of Interest are:

JsonDecoder
MessageHandler
ConnectionService
ConfigurationService

Signed-off-by: Brent Salisbury <brent.salisbury@gmail.com>
Echoes and ByteBuf added to patch

Signed-off-by: Brent Salisbury <brent.salisbury@gmail.com>