(JMS)Does JMSClient which is also producer in some cases recieve its own messages which it sends

Question

(JMS)Does JMSClient which is also producer in some cases recieve its own messages which it sends

Answer 1

definitely yes, if it has a listener on a destination that it also produces messages on.

Answer 2

As you can see in the example below it is possible for a client to be both a producer and a consumer. It really depends how you set it up. Typically a client is either a consumer or a producer if you are doing async messaging. If you are doing request/reply then it would do both, and you would either use a correlationID or a messageID to keep track of your requests and replies. The sample below is for asynchronous communications.

    myConnFactory = new com.sun.messaging.ConnectionFactory();
    Connection myConn = myConnFactory.createConnection();
    //Create a session within the connection.
    Session mySess = myConn.createSession(false, Session.AUTO_ACKNOWLEDGE);
    myQueue = new com.sun.messaging.Queue("world");

    //Create a message producer.
    MessageProducer myMsgProducer = mySess.createProducer(myQueue);

    //Create a message consumer. (Use if going to read from the queue)
    MessageConsumer myMsgConsumer = mySess.createConsumer(myQueue);

    //Start the Connection
    myConn.start();

    //Create and send a message to the queue.
    TextMessage myTextMsg = mySess.createTextMessage();
    myTextMsg.setText("Hello World");
    System.out.println("Sending Message: " + myTextMsg.getText());
    myMsgProducer.send(myTextMsg);

    // The rest of the code is for reading from a queue - optional
    //Receive a message from the queue. 
    Message msg = myMsgConsumer.receive();

    //Retreive the contents of the message.
    if (msg instanceof TextMessage) {
        TextMessage txtMsg = (TextMessage) msg;
        System.out.println("Read Message: " + txtMsg.getText());
    }

Answer 3

I got the answer.. There is a noLocal Flag which one can set to not receive messages from same connection