[zeromq-dev] Router-Dealer Example not working in C on 4.0.4 ZMQ release

[Charles Remes]

This tutorial that focuses on dealer and router sockets might also help explain things a bit more too. When in doubt, the zguide text takes precedence but this tutorial should still be correct.

http://zeromq.org/tutorials:dealer-and-router

cr

On Jul 25, 2014, at 3:17 PM, Badhrinath Manoharan <badhrim at gmail.com> wrote:

> Hi Peter,
> 
> No issues at all. I totally get your thoughts here. Thanks a lot again for the detailed response. 
> 
> I just got misled that we could use Router - Dealer as similar to Rep - Req socket. Moreover I had one client and one server so thought it might work.
> 
> Anyways thanks a lot for correcting my understanding. Will surely give it a try and update the thread.
> 
> Thanks again
> Badhri
> 
> Sent from my iPhone
> 
> On Jul 25, 2014, at 1:33 AM, Pieter Hintjens <ph at imatix.com> wrote:
> 
>> Sorry if that email seemed unpolite; it was late and I'd been driving
>> for 10 hours with three small kids who refused to sleep.
>> 
>> So, ROUTER sockets always prefix the incoming message with an extra
>> frame that holds a routing id (aka "identity"), that identifies which
>> pipe the message came in from. You stick that same frame back before
>> outgoing replies, and the ROUTER socket then knows which pipe to send
>> it to.
>> 
>> These IDs start with a binary zero. If you try to printf them, the
>> result is an empty string. In my example code, if you tried it, the
>> print shows this ID frame quite clearly.
>> 
>> This is explained in detail in Chapter 3 of the Guide, and briefly in
>> the zmq_socket man page for ZMQ_ROUTER.
>> 
>> It is not trivial, and you should really read the Guide and work
>> through the examples before trying to use ROUTER.
>> 
>> -Pieter
>> 
>> On Fri, Jul 25, 2014 at 12:53 AM, Pieter Hintjens <ph at imatix.com> wrote:
>>> You're not reading the man pages, nor documentation, nor example
>>> output properly.
>> _______________________________________________
>> zeromq-dev mailing list
>> zeromq-dev at lists.zeromq.org
>> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
> _______________________________________________
> zeromq-dev mailing list
> zeromq-dev at lists.zeromq.org
> http://lists.zeromq.org/mailman/listinfo/zeromq-dev