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.brich...@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 > > _______________________________________________ > zeromq-dev mailing list > zeromq-dev@lists.zeromq.org > https://lists.zeromq.org/mailman/listinfo/zeromq-dev >
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