[Proton-c] [C++ bindings][0.14.0] How do I know a message was settled by the receiver?

[Adel Boutros]

Hello,


I have a simple C++ client which connects to a Qpid Java Broker (6.0.4) and 
receives messages.

With the default behavior of the C++ client, how can I know when a delivery has 
been settled?

It seems there is no way for me to know that.


I have debugged a bit and when the on_message is called, the message becomes in 
"Acquired" state on the broker. Later on, somewhere which I haven't found yet, 
the message is settled and disappears from the broker. However none of the 
functions I implemented below is called.


Can you please assist?


Console output

-----------------------

on_message


Code

-----------------------


class MyHandler : public proton::messaging_handler
{
public:

   virtual void on_container_start(proton::container &c)
   {
      proton::url url("localhost:5672");
      proton::connection connection = c.connect(url);
      proton::receiver_options 
receiverOptions(proton::receiver_options().credit_window(0));
      connection.open_receiver("queue.name", receiverOptions);
   }

   virtual void on_receiver_open(proton::receiver& l)
   {
      l.add_credit(1);
   }

   virtual void on_message(proton::delivery &d, proton::message &m)
   {
      std::cout << "on_message" << std::endl;
   }
   virtual void on_delivery_settle(proton::delivery &d)
   {
      std::cout << "on_delivery_settle" << std::endl;
   }
   virtual void on_tracker_accept(proton::tracker &d)
   {
      std::cout << "on_tracker_accept" << std::endl;
   }

   virtual void on_tracker_reject(proton::tracker &d)
   {
      std::cout << "on_tracker_reject" << std::endl;
   }

   virtual void on_tracker_release(proton::tracker &d)
   {
      std::cout << "on_tracker_release" << std::endl;
   }

   virtual void on_tracker_settle(proton::tracker &d)
   {
      std::cout << "on_tracker_settle" << std::endl;
   }
};



Regards,

Adel