[zeromq-dev] Help on REQ to ROUTER

[Matteo]

It works!!

Finally, I was also playing with ZMQ_ROUTER_MANDATORY and could see no
issues, damn, such a silly mistake!

Thank you!

On Fri, Jun 19, 2020 at 4:30 PM Rodrigo Farnham <rfarnham at gmail.com> wrote:

> I found in documentation that ROUTER <-> REQ/REP requires a null
> delimiter, which I believe
> zmq_send(backend, "", 1, ZMQ_SNDMORE); tries to add, but shouldn't it be
> zmq_send(backend, "", 0, ZMQ_SNDMORE); (I also think zmq_send(backend,
> NULL, 0, ZMQ_SNDMORE); works)
>
> I've run into a similar problem before and even setting ZMQ_ROUTER_MANDATORY
> does not give an error in the ROUTER side.
>
> On Fri, Jun 19, 2020 at 3:57 PM Matteo <matteo.brichese at gmail.com> wrote:
>
>> Hi all,
>>
>> I have been banging my head on this issue since a couple of days, I
>> thought I had enough experience in zmq to make it work but apparently not.
>>
>> I am rewriting the Simple Pirate Pattern using the pure zmq library and
>> Qt. I have used Zmq+Qt before, I can receive a message from REQ to a ROUTER
>> no problem, the main issue is responding to a REQ.
>>
>> zmq_send(backend, destination.data(), static_cast<size_t>( destination
>> .size()), ZMQ_SNDMORE);
>> zmq_send(backend, "", 1, ZMQ_SNDMORE);
>> zmq_send(backend, message.data(), static_cast<size_t>(message.size()), 0);
>>
>> destination.data() returns a char* to the address of the REQ socket.
>>
>> I have tried multiple combinations but nothing seems to work so far.
>>
>> Any suggestions?
>>
>> Thank you
>>
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>>
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