Message Format

All the JSON messages have the following structures:

Field		Description
Header
	MessageType	The type of the JSON message. It can have the following values:
		READ_REQUEST
		READ_RESPONSE
		WRITE_REQUEST
		WRITE_RESPONSE
		VALUELIST_REQUEST
		VALUELIST_RESPONSE
		VALUEINFO_REQUEST
		VALUEINFO_RESPONSE
		MONITORSTART_REQUEST
		MONITORSTART_RESPONSE
		MONITORSTOP_REQUEST
		MONITORSTOP_RESPONSE
		MONITORUPDATE_MESSAGE
		HISTORICALREAD_REQUEST
		HISTORICALREAD_RESPONSE
	ClientHandler	An identifier of the message which is set by the client in the request. The server copies its value to the corresponding response.
	[StatusCode]	Is sent if an error occurs by processing the request from the client.
Body

All the JSON messages are described by using our Notation.