[zeromq-dev] Simple PUB / SUB test does not work

[Aurélien ....]

I tried with 127.0.0.1 on bind and connect functions, it didn't worked.

I also tried on Linux (Ubuntu 16.04), same result.

Very strange !

On Thu, Sep 22, 2016 at 7:12 PM, Luca Boccassi <luca.boccassi at gmail.com>
wrote:

> Windows has some weirdness on the localhost I think, try to avoid the
> wildcard and bind and connect to 127.0.0.1
>
> On 22 September 2016 at 17:57, Aurélien .... <kinju59 at gmail.com> wrote:
> > Thank you for your replies.
> >
> > I tried with that :
> >
> > zmq::socket_t subscriber(context, ZMQ_SUB);
> > subscriber.connect("tcp://localhost:5563");
> > Sleep(1000);
> > subscriber.setsockopt(ZMQ_SUBSCRIBE, "A");
> > Sleep(1000);
> >
> > And it stiil does not work.
> >
> > I also tried with the ZMQ version 4.2.0, same result.
> >
> > I forgot to tell that I'm using the static version of ZMQ (with the
> > ZMQ_STATIC preprocessor variable), maybe it has something to do ?
> >
> > Thank you,
> >
> > Kin
> >
> > On Thu, Sep 22, 2016 at 6:28 PM, Dimos Stamatakis <dimstamat at gmail.com>
> > wrote:
> >>
> >> That's right. I remember reading this on the instructions on how to
> build
> >> a pub-sub system in ZeroMQ. There is limited availability, since as Ian
> said
> >> they wanted to build something fast and make it reliable, rather than
> >> building something reliable and make it fast.
> >>
> >> Dimos
> >>
> >> On Thu, Sep 22, 2016 at 12:21 PM, Colin Ingarfield <
> colin at ingarfield.com>
> >> wrote:
> >>>
> >>> The subscriber connect() call is asynchronous.  It's possible the
> publish
> >>> messages are sent before the subscribe socket connects and establishes
> its
> >>> subscription.
> >>>
> >>> Try sleeping for 100ms or so after the connect call, before the loop.
> >>>
> >>>
> >>> On 9/22/16 11:10 AM, Aurélien .... wrote:
> >>>
> >>> Hi,
> >>>
> >>> I'm trying to make a simple PUB / SUB test.
> >>>
> >>> First, I created the publisher, then the subscriber with a message to
> >>> subscribe.
> >>>
> >>> Second, I send some messages from the publisher and I try to retreive
> >>> them from the subscriber.
> >>>
> >>> The code compiles but the subscriber does not receive any data.
> >>>
> >>> My config is :
> >>> - Windows 7 / Visual Studio 2015
> >>> - Compile in /MTd (debug)
> >>> - ZMQ Version : 4.1.4
> >>>
> >>> Here is the code :
> >>>
> >>> #include "zhelpers.hpp"
> >>>
> >>> void TestPubSub()
> >>> {
> >>> zmq::context_t context;
> >>> zmq::socket_t publisher(context, ZMQ_PUB);
> >>> zmq_bind(publisher, "tcp://*:5563");
> >>>
> >>> zmq::socket_t subscriber(context, ZMQ_SUB);
> >>> subscriber.connect("tcp://localhost:5563");
> >>> subscriber.setsockopt(ZMQ_SUBSCRIBE, "A");
> >>>
> >>> while (1) {
> >>> //  Write two messages, each with an envelope and content
> >>> s_sendmore(publisher, "A");
> >>> s_send(publisher, "We don't want to see this");
> >>> s_sendmore(publisher, "B");
> >>> s_send(publisher, "We would like to see this");
> >>>
> >>> //  Read envelope with address
> >>> std::string addr = s_recv(subscriber); // block here, waiting for
> >>> messages which does not come
> >>> //  Read message contents
> >>> std::string contents = s_recv(subscriber);
> >>> }
> >>> }
> >>>
> >>> int main(int argc, char** argv)
> >>> {
> >>> TestPubSub();
> >>> return 0;
> >>> }
> >>>
> >>> Can you tel me where I'm wrong ?
> >>>
> >>> Thank you very much,
> >>>
> >>> Kin
> >>>
> >>>
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> >>>
> >>>
> >>>
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> >>
> >>
> >>
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> >
> >
> >
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