[zeromq-dev] Question about router-dealer sockets

[Marco Trapanese]

Il 30/11/2012 18:54, Charles Remes ha scritto:

> Marco,
>
> I think there is a fundamental misunderstanding about how a message queue is supposed to work. If you haven't read the guide yet (zguide.zeromq.org) then at the very least read this section:
>
> http://zguide.zeromq.org/page:all#Why-We-Needed-MQ
>
> The issues you describe are specific to your use-case. You need heartbeating and ack'ing at the very minimum but you need to *build those concepts* on top of zeromq. For example, if you don't want your client to process any more messages if the server goes down, then you need to build a protocol between your client and server so that it behaves that way. In that case, I would have the server send only a single message at a time and wait for an ack from the client before it could send another. Your client shouldn't ack until it has processed the received message.
>
> As I said in the beginning, I think you are misunderstanding the purpose of zeromq. Please read the guide.


I read the guide a lot of times, in particular the sections about 
Heartbeating.
Of course I'm misunderstanding something in zmq. Perhaps all my 
applications need a workaround to get the thinks work right.

My background is mainly related to MCU programming: I have difficulties 
to fully understand the behavior of the queues.

Thank you for your patience!
Marco