[zeromq-dev] Advanced request/reply broker pattern

Zachary Turner divisortheory at gmail.com
Mon Aug 22 20:07:46 CEST 2011

Ahh, that makes sense.  I have read much of the guide, but I guess I just
missed that part.

On Mon, Aug 22, 2011 at 10:58 AM, Pieter Hintjens <ph at imatix.com> wrote:

> On Mon, Aug 22, 2011 at 7:25 PM, Zachary Turner <divisortheory at gmail.com>
> wrote:
> > The part that's confusing me is this: Let's say I have one ROUTER socket
> in
> > my server connected to many DEALER sockets on my clients.  We'll number
> my
> > clients from 1-10.  Now suppose my broker decides that it needs to send a
> > message to client #7.  How does it do this without ZMQ_IDENTITY?
> ZMQ_IDENTITY sets the identity to a fixed, preknown value. However you
> don't need that. The DEALER socket will generate a unique identity
> when it connects to the ROUTER socket, and the ROUTER will get that
> unique identity on all incoming messages. Thus, you always initiate a
> dialog with a request from DEALER to ROUTER, with 0..n replies back
> from ROUTER to DEALER.
> This is actually explained in the Guide, with examples.
> -Pieter
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