Is registerHandler javascript method work synchronously?

[Oren Shvalb]

Hi,

I work with the newest Vertx 3.0

I've tried the following code (I think this is how I used to do it in v2.x):

eb.registerHandler(address, primaryGameRegistrationHandler, function() {
   eb.send('game.host.' + primary_game_id + '.s',
        {
                "action" : 'join_next_tournament_round',
                "session_id" : sessionId,
                "game_id" : primary_game_id
        }, function(reply) {
              console.info(getTimeDate() + '\t Subscribe and join Primary Game address=' + address);
        }
    )
 });

It doesn't work!

but if I do it separately, first the registerHandler and only then sending the message - then it works.

according to this behaviour I assume that registerHandler is sync.

Makes sense?