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<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://ws.apache.org/ns/synapse">
   <proxy name="EventMessageProxy" transports="https http" startOnLoad="true" trace="disable">
      <target>
         <inSequence>
            <event topic="stockquote" />
         </inSequence>
         <outSequence>
            <send />
         </outSequence>
      </target>
   </proxy>
</definitions>

Simulating the example scenario

Now, let's try out the example scenario explained above.

Setting up the environment 

You need to set up the ESB, and the back-end service:

1. Download the Event-Message_1.0.0.zip file, which includes the ESB configuration described above. 

2. See Setting up the Environment for instructions on setting up the ESB and the back-end service.

   Info
   When you set up the environment, note that you need to start two instances of the back-end service (Stock Quote Service) to simulate this example.

3. Follow the steps below to create an event for the subscriber with port 9000.
   
   • Start the ESB and log into its Management Console. For instructions, see Starting the ESB in WSO2 ESB documentation.
   • Click Topics from the Main menu, and then click Add.
   • Enter stockquote as the topic name and then click Add Topic.
   • In the Topic browser, click the newly created stockquote topic and then click Subscribe to create a static subscription. 
     
   • Enter http://localhost:9000/services/SimpleStockQuoteService in the Event Sink URL field and click Subscribe.
4. Repeat the above steps to add another subscriber in port 9001.

Executing the sample