[zeromq-dev] Assertion during zmq_recv in 3.x

[Martin Hurton]

Hi Stuart, could you please file an issue for this?

- Martin

On Fri, Jul 27, 2012 at 9:23 PM, Stuart Brandt <stu at compuserve.com> wrote:
> I get an assertion during a call to zmq_recv on 2 different OSes (OSX
> 10.7.4 and CentOS 5.8) under two different builds of 3.x (v3.2.0-rc1 and
> a recent build off latest at github.com/zeromq/libzmq).
>
> The assertion is:
> Assertion failed: (msg_->flags () & msg_t::identity) == 0 (router.cpp:220)
> Aborted
>
> The setup involves:
> 1) the simple message queue broker found at
> https://github.com/imatix/zguide/blob/master/examples/C/msgqueue.c
> I modified the #include to look for zmq.h rather than zhelpers.h to get
> it to compile with ZMQ 3.x
>
> 2) a minimal server implementation that connects to the broker and does
> a zmq_recv. Code is:
> //
> //  Demo of assertion in ZMQ 3.x by REP socket connecting to ROUTER socket
> //  Connects to tcp://localhost:5560
> //
> #include <stdio.h>
> #include <zmq.h>
>
> int main (void)
> {
>      char buf[80];   // buffer for zmq_recv call
>      int len;        // len returned by zmq_recv
>      void *ctx;      // ZMQ context
>      void *sock;     // ZMQ socket
>
>      // init ZMQ context, create a REP socket, and connect to ROUTER
>      ctx = zmq_ctx_new();
>      sock = zmq_socket(ctx,ZMQ_REP);
>      zmq_connect (sock, "tcp://localhost:5560");
>
>      // do a basic zmq_recv call...warn if it fails
>      len = zmq_recv(sock,buf,sizeof(buf),0);
>      if (len < 0) {
>          printf("zmq_recv failed - %s\n",zmq_strerror(errno));
>      }
>
>      // Done. Clean up and end
>      zmq_close (sock);
>      zmq_term (ctx);
>      return 0;
> }
>
>
> Steps to repro are start server, start broker, kill broker (spec.
> ctrl-C), restart broker. Server aborts with the above assertion.
>
> Is there something my code should be doing differently?
>
> Thanks....Stuart
>
>
>
> _______________________________________________
> zeromq-dev mailing list
> zeromq-dev at lists.zeromq.org
> http://lists.zeromq.org/mailman/listinfo/zeromq-dev