BGPServer server = new BGPServer();
server.getSessionConfigurations().add(new BGPSessionConfiguration(
        "demosession",
        1234,
        ip("1.2.3.4"),
        4321,
        ip("4.3.2.1"),
        new BGPListener() {
            public void onOpen(BGPSession session) {
                // DO WHAT YOU WANT
            }
            public void onUpdate(BGPSession session, BGPUpdate update) {
                // DO WHAT YOU WANT
            }
            public void onClose(BGPSession session) {
                // NOT YET IMPLEMENTED
            }
        }
));
server.run();