Introduction

Functionality

• subscribe
• unsubscribe
• notify subscribers
• receive notifications to send to subscribers (UDP, TCP/IP, named pipes, ...)
• control the publication server
  • read a configuration file on startup (CSV or JSON file?)
  • notification timing (instantly or scheduled or delayed or ...)

Project #1

Create a notification server that can send notifications based on different topics. Define 3 or more topics for the project.

For testing

• when someone subscribes create an empty text file (with a unique name)
• when someone unsubscribes delete the text file
• append notifications to the appropriate text file (with a timestamp)
• keep a log of all activities

Design Suggestion

The following is one way to implement a publisher (but not the only way).

Create a publisher class that does it all. This way you can create multiple publisher objects that do the work. Different publishers for different topics.

The notifications could be email, TCP/IP, UDP, or some other method.

Note: See " A Simple Messaging Service" for an UDP code example.

Linux

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