defineClass(Latch.class);
evaluateScript("var readyLatch = new Latch(1);");
Latch readyLatch = get("readyLatch");
evaluateScript("cometd.addListener('/meta/connect', function(message) { readyLatch.countDown(); });");
evaluateScript("cometd.handshake();");
Assert.assertTrue(readyLatch.await(5000));
// Send a message so that the ack counter is initialized
evaluateScript("var latch = new Latch(1);");
Latch latch = get("latch");
evaluateScript("" +