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

1. Download the Point-To-Point_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 three instances of the back-end service (Stock Quote Service) to simulate this example.

Executing the sample

Let's send a request to the ESB using the Stock Quote Client application. Find out more about the Stock Quote Client from the ESB documentation.

1. Open a new terminal, and navigate to the <ESB_HOME>/samples/axis2Client/ directory. The Stock Quote client application is stored in this directory.

2. Execute the following command to send the request to the ESB.

   Code Block
   ant stockquote -Dtrpurl=http://localhost:8280/services/point-to-point-proxy -Dsymbol=foo

   The structure of the request should be as follows:

   Code Block
   <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ser="http://services.samples" xmlns:xsd="http://services.samples/xsd"> <soapenv:Header /> <soapenv:Body> <ser:getQuote> <ser:request> <ser:symbol>foo</ser:symbol> </ser:request> </ser:getQuote> </soapenv:Body> </soapenv:Envelope>

Analyzing the output

Note that, out of all three instances of the Stock Quote service (Axis2 server), only one server acquires the sent request at a given time.

Stock client response: 

Standard :: Stock price = $81.06211284751495

samples.services.SimpleStockQuoteService :: Generating quote for : foo

When you send the request, the ESB first receives the message and then routes it to the back-end service. Out of the three instances of the back-end service, only one service consumes this single message.

The following output will be printed on the console of the Axi2 server that received the message. This confirms that the request is successfully received by the back-end service.

samples.services.SimpleStockQuoteService :: Generating quote for : foo

The generated stock quote will then be sent to the client application (Stock Quote Client). The following output will be printed on the client application's console: 

Standard :: Stock price = $81.06211284751495