Lesson 3 Overview

The files for this lesson are located in this directory:

UNIX:

$RTHOME/examples/smrtsock/tutorial/lesson3

OpenVMS:

RTHOME:[EXAMPLES.SMRTSOCK.TUTORIAL/LESSON3]

Windows:

%RTHOME%\examples\smrtsock\tutorial\lesson3

As seen in the previous lessons, within a TIBCO SmartSockets application, interprocess communication occurs through messages. A message is a structured packet of information sent from one process to one or more other processes, providing instructions or data for the receiving processes. Messages can carry many different kinds of information in a TIBCO SmartSockets application including: XML, alarms, variable-value pairs representing sensor information, and IPC information about a client.

These different kinds of messages are classified by message type. For example, numeric data is typically sent in a NUMERIC_DATA message, and an operator warning is typically sent in a WARNING message. A TIBCO SmartSockets application can use both the standard message types provided with TIBCO SmartSockets and user-defined message types created by you.