Examples of org.jgroups.protocols.MPING

org.jgroups.protocols.MPING
Uses its own IP multicast socket to send and receive discovery requests/responses. Can be used in conjuntion with a non-UDP transport, e.g. TCP.
The discovery is assymetric: discovery requests are broadcast via the multicast socket, and received via the multicast socket by everyone in the group. However, the discovery responses are sent back via the regular transport (e.g. TCP) to the sender (discovery request contained sender's regular address, e.g. 192.168.0.2:7800). @author Bela Ban

    private static void replaceDiscoveryProtocol(JChannel ch) throws Exception {
        ProtocolStack stack=ch.getProtocolStack();
        Protocol discovery=stack.removeProtocol("TCPPING");
        if(discovery != null){
            Protocol transport = stack.getTransport();
            MPING mping=new MPING();
            InetAddress bindAddress=Util.getBindAddress(new Properties());
            mping.setBindAddr(bindAddress);
            mping.setMulticastAddress("230.1.2.3");
            mping.setMcastPort(8888);            
            stack.insertProtocol(mping, ProtocolStack.ABOVE, transport.getName());
            mping.setProtocolStack(ch.getProtocolStack());
            mping.init();
            mping.start();            
            System.out.println("Replaced TCPPING with MPING. See http://wiki.jboss.org/wiki/Wiki.jsp?page=JGroupsMERGE2");            
        }        
    }

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    private static void replaceDiscoveryProtocol(JChannel ch) throws Exception {
        ProtocolStack stack=ch.getProtocolStack();
        Protocol discovery=stack.removeProtocol("TCPPING");
        if(discovery != null){
            Protocol transport = stack.getTransport();
            MPING mping =new MPING();
            mping.setProperties(new Properties());
            mping.setProtocolStack(ch.getProtocolStack());
            stack.insertProtocol(mping, ProtocolStack.ABOVE, transport.getName());
            mping.init();
            mping.start();            
            System.out.println("Replaced TCPPING with MPING. See http://wiki.jboss.org/wiki/Wiki.jsp?page=JGroupsMERGE2");            
        }        
    }

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