pingpong.groovy

vertx.eventBus().consumer("com.makingdevs.ping"){ message ->
  println "Message Received: ${message.body()}" // Pong!  
  message.reply("ping")
}

vertx.eventBus().send("com.makingdevs.ping", "pong"){ reply ->
  if(reply.suceeded()){
    println "Reply Received: ${reply.result().body()}" // Ping!
  }
}