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Writing publisher applications

 

Publisher applications communicate with the broker using command messages in the RF Header format (or the equivalent functions in the Application Messaging Interface). Publishers can register with the broker before they start publishing information, they can register implicitly with their first publication, or they can choose not to register. When they have finished publishing information, they can deregister with the broker. They can also delete retained publications. This chapter discusses the following topics:

• Registering with the broker

• Publishing information

• Delete information

• Deregistering with the broker

We can see an example of a publisher application in Sample programs.

The only configuration the administrator has to perform before we can define an application as a potential publisher is to set up the necessary security authorization to enable the application to put messages to the required stream queues, and, if explicit registration is required, to send messages to the broker's control queue (see Broker queues).

 

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