public void start() {
int port = 19090;
HttpServer server = vertx.createHttpServer();
final SocketIOServer io = new DefaultSocketIOServer(vertx, server);
io.sockets().onConnection(new Handler<SocketIOSocket>() {
public void handle(final SocketIOSocket socket) {
socket.on("send", new Handler<JsonObject>() {
public void handle(JsonObject message) {
socket.broadcast().emit("msg", message);
}