I'm not sure but skimming your code you are mixing czmq sockets and zmq poll method. If you want to use the zmp_poll method you can use zsock_resolve on the czmq sockets

// Probe the supplied reference. If it looks like a zsock_t instance, return
//  the underlying libzmq socket handle; else if it looks like a file
//  descriptor, return NULL; else if it looks like a libzmq socket handle,
//  return the supplied value. Takes a polymorphic socket reference.
CZMQ_EXPORT void *
    zsock_resolve (void *self);

Otherwise use the zpoller czmq class instead of zmq_poll

Rg,

Arnaud

On 04-07-2023 11:26, Chandrasekhar Nunna wrote:
hi all,
i am using zactor and in the call back i receive a pipe socket.
i create a router socket and polling this sockets for messages.
it is not working and giving -1 result as return value of zmq_poll;
what could be the problem?
void
echo_actor (zsock_t *pipe, void *args)
{
     // need to implement...?
     printf("thread id : %lu", GetCurrentThreadId());
     server_t* self = server_new(pipe);
     zmq_pollitem_t items[] =
     {
         { self->pipe, 0, ZMQ_POLLIN, 0 },
         { self->router, 0, ZMQ_POLLIN, 0 }
     };
     self->monitor_at = zclock_time() + self->monitor;
     while (!self->stopped && !zctx_interrupted)
     {
         //  Calculate tickless timer, up to interval seconds
         uint64_t tickless = zclock_time() + self->monitor;
         uint64_t diff = (tickless - zclock_time()) * ZMQ_POLL_MSEC;
         //  Poll until at most next timer event
         int rc = zmq_poll(items, 2, diff );
         if (rc == -1)
         {
             break;              //  Context has been shut down
         }

         //  Process incoming message from either socket
         if (items[0].revents & ZMQ_POLLIN)
             server_control_message(self);

         if (items[1].revents & ZMQ_POLLIN)
             server_client_message(self);

         //  If clock went past timeout, then monitor server
         if (zclock_time() >= self->monitor_at)
         {
             printf("clock went past timeout, need to monitor the server");
         }
     }
     server_destroy(&self);
}

int main()
{
     zactor_t *actor = zactor_new (echo_actor, "Hello, World");
     assert (actor);
     zstr_sendx (actor, "ECHO", "This is a string", NULL);
     char *string = zstr_recv (actor);
     fprintf(stdout,"%s\n",string);
     assert (streq (string, "This is a string"));
     free (string);
     zactor_destroy (&actor);
}



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