Examples of TCPGOSSIP

org.jgroups.protocols.TCPGOSSIP

The TCPGOSSIP protocol layer retrieves the initial membership (used by the GMS when started by sending event FIND_INITIAL_MBRS down the stack). We do this by contacting one or more GossipRouters, which must be running at well-known addresses:ports. The responses should allow us to determine the coordinator whom we have to contact, e.g. in case we want to join the group. When we are a server (after having received the BECOME_SERVER event), we'll respond to TCPGOSSIP requests with a TCPGOSSIP response.

The FIND_INITIAL_MBRS event will eventually be answered with a FIND_INITIAL_MBRS_OK event up the stack. @author Bela Ban

    public void testAddInitialHosts() throws Exception {
        coordinator = new JChannel(props);
        channel = new JChannel(props);
        coordinator.connect(GROUP);
        channel.connect(GROUP);
        TCPGOSSIP p = (TCPGOSSIP) channel.getProtocolStack().findProtocol(TCPGOSSIP.class);
        String bind_addr = getRouterBindAddress();
        assert p.removeInitialHost(bind_addr, 12001);
        p.addInitialHost(bind_addr, 12001);
               
       
        View view = channel.getView();
        assert view.size() == 2;
        assert view.containsMember(channel.getAddress());

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Examples of TCPGOSSIP

Examples of org.jgroups.protocols.TCPGOSSIP