CountDownLatch latchListen = new CountDownLatch(numServers);
CountDownLatch latchConns = new CountDownLatch(numConnections);
for (int i = 0; i < numServers; i++) {
HttpServer theServer = vertx.createHttpServer(new HttpServerOptions().setPort(HttpTestBase.DEFAULT_HTTP_PORT));
servers.add(theServer);
theServer.websocketHandler(ws -> {
connectedServers.add(theServer);
Integer cnt = connectCount.get(theServer);
int icnt = cnt == null ? 0 : cnt;
icnt++;
connectCount.put(theServer, icnt);