Examples of org.activemq.message.KeepAlive

org.activemq.message.KeepAlive
Keep-alive packet which holds not information and is only intended to keep connections from being idle.

        Properties headers = parser.parse(in);
        while (in.readByte() != 0) {}


        if (format.isInTransaction())
        {
            return new PacketEnvelope(new KeepAlive(), headers);
        }
        TransactionInfo tx = new TransactionInfo();
        String tx_id = StompWireFormat.clientIds.generateId();
        format.setTransactionId(tx_id);
        tx.setTransactionId(tx_id);

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     * validate the connection
     * @param timeout
     * @throws JMSException
     */
  public void validateConnection(int timeout) throws JMSException {
    KeepAlive packet = new KeepAlive();
    packet.setReceiptRequired(true);
    packet.setId(this.packetIdGenerator.getNextShortSequence());
    // In most cases, if the transport is dead due to network errors
    // the network error will be recognised immediately and an exception 
    // thrown. If the duplicate client ids are due to misconfiguration, 
    // we make sure that we do not terminate the "right" connection 
    // prematurely by using a long timeout here. If the existing client

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     * validate the connection
     * @param timeout
     * @throws JMSException
     */
  public void validateConnection(int timeout) throws JMSException {
    KeepAlive packet = new KeepAlive();
    packet.setReceiptRequired(true);
    packet.setId(this.packetIdGenerator.getNextShortSequence());
    // In most cases, if the transport is dead due to network errors
    // the network error will be recognised immediately and an exception 
    // thrown. If the duplicate client ids are due to misconfiguration, 
    // we make sure that we do not terminate the "right" connection 
    // prematurely by using a long timeout here. If the existing client

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     * validate the connection
     * @param timeout
     * @throws JMSException
     */
  public void validateConnection(int timeout) throws JMSException {
    KeepAlive packet = new KeepAlive();
    packet.setReceiptRequired(true);
    packet.setId(this.packetIdGenerator.getNextShortSequence());
    // In most cases, if the transport is dead due to network errors
    // the network error will be recognised immediately and an exception 
    // thrown. If the duplicate client ids are due to misconfiguration, 
    // we make sure that we do not terminate the "right" connection 
    // prematurely by using a long timeout here. If the existing client

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    /**
     * @return a new Packet instance
     */


    public Packet createPacket() {
        return new KeepAlive();
    }

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        } else {
            // Then it should be active 
            // Keep pinging the channel periodically
            if ((channel.getLastReceiptTimestamp() + channel.getKeepAliveTimeout()) < System.currentTimeMillis()) {
                log.debug("Sending keep-alive on channel " + channel.toString());
                KeepAlive packet = new KeepAlive();
                packet.setReceiptRequired(true);
                boolean wasConnected = channel.isTransportConnected();
                try {
                    channel.asyncSendWithReceipt(packet);
                    zombieChannelSuspects.add(channel);
                } catch (JMSException e) {

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     * validate the connection
     * @param timeout
     * @throws JMSException
     */
  public void validateConnection(int timeout) throws JMSException {
    KeepAlive packet = new KeepAlive();
    packet.setReceiptRequired(true);
    packet.setId(this.packetIdGenerator.getNextShortSequence());
    // In most cases, if the transport is dead due to network errors
    // the network error will be recognised immediately and an exception 
    // thrown. If the duplicate client ids are due to misconfiguration, 
    // we make sure that we do not terminate the "right" connection 
    // prematurely by using a long timeout here. If the existing client

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        assertTrue("Exceptions were thrown: " + exceptions, exceptions.size() == 0);
    }


    public void testAsyncSendWithReceipt() throws Exception {
        sendReceipts = true;
        Packet packet = new KeepAlive();
        packet.setId((short) 1);
        ReceiptHolder rh = sender.asyncSendWithReceipt(packet);
        Receipt result = rh.getReceipt(5000);
        if (result == null) {
            fail("Should have gotten receipt");
        }

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Related Classes of org.activemq.message.KeepAlive

org.activemq.broker.impl.BrokerClientImpl

org.activemq.io.impl.KeepAliveReader

org.activemq.transport.reliable.KeepAliveDaemon

org.activemq.transport.stomp.Begin

org.activemq.transport.TransportChannelTestSupport

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