public void test_3_noHandlers()
    {
        try
        {
            io.vertx.Eventbus eb = new io.vertx.Eventbus();

            Headers h = new Headers();
            h.addHeaders("type", "maths");
            JObject body_add = new JObject();
            body_add.Add("message", "add");

            //sending with time out = 5 secs
            eb.send(
                "pcs.status",                                  //address
                body_add,                                      //body
                "pcs.status.c",                                //reply address-no handlers
                h,                                             //headers
                (new ReplyHandlers("pcs.status",               //replyhandler address
                                   new Action <bool, JObject>( //replyhandler function
                                       (err, message) =>
            {
                if (err == false)
                {
                    SystemTest.i += 5;
                }
            }
                                       )
                                   )
                ),
                5);
            //close the socket
            eb.CloseConnection(5);
            bool fileFound = false;

            try{
                string path = "error_log_.txt";
                if (File.Exists(path))
                {
                    fileFound = true;
                }
            }catch (Exception e) {
                System.Console.WriteLine(e);
            }
            Assert.Equal(true, fileFound);
            Assert.Equal(5, i);
        }catch (Exception e) {
            System.Console.WriteLine(e);
        }
    }
    public static void Main(string[] args)
    {
        try
        {
            io.vertx.Eventbus eb = new io.vertx.Eventbus();

            Console.WriteLine("i:" + client.i);

            Headers h = new Headers();
            h.addHeaders("type", "maths");
            JObject body_add = new JObject();
            body_add.Add("message", "add");

            //sending with time out = 5 secs
            eb.send(
                "pcs.status",                                  //address
                body_add,                                      //body
                "pcs.status",                                  //reply address
                h,                                             //headers
                (new ReplyHandlers("pcs.status",               //replyhandler address
                                   new Action <bool, JObject>( //replyhandler function
                                       (err, message) =>
            {
                if (err == false)
                {
                    client.i += 5;
                }
                Console.WriteLine(message);
            }
                                       )
                                   )
                ),
                5);

            Console.WriteLine("i:" + client.i);

            JObject body_sub = new JObject();
            body_sub.Add("message", "sub");

            //sending with default time out
            eb.send(
                "pcs.status",                                  //address
                body_sub,                                      //body
                "pcs.status",                                  //reply address
                h,                                             //headers
                (new ReplyHandlers("pcs.status",               //replyhandler address
                                   new Action <bool, JObject>( //replyhandler function
                                       (err, message) =>
            {
                if (err == false)
                {
                    client.i -= 5;
                }
                Console.WriteLine(message);
            }
                                       )
                                   )
                ));

            eb.register(
                "pcs.status",
                (new Handlers(
                     "pcs.status",
                     new Action <JObject>(
                         message =>
            {
                client.i += 5;
                Console.WriteLine(message);
            }
                         )
                     )
                ));

            Console.WriteLine("i:" + client.i);

            //send a message without a replyhandler
            eb.send("pcs.status", body_add, "pcs.status", h);
            //publish
            JObject body_close = new JObject();
            body_close.Add("message", "close");
            eb.publish("pcs.status", body_close, h);

            //close the socket
            eb.CloseConnection(5);
            Console.WriteLine("i:" + client.i);
        }
        catch (Exception e)
        {
            System.Console.WriteLine(e);
        }
    }