[zeromq-dev] DEALER/REP problem

[Whit Armstrong]

I'm having trouble connecting a DEALER to a REP socket.

I thought DEALER/REP was a valid socket combo.  Do I need a ROUTER or
REQ somewhere in the chain to make REP happy?

my server (using REP):

int main () {
  zmq::context_t context (1);
  zmq::socket_t clients (context, ZMQ_REP);
  clients.bind("tcp://*:5555");

  while(true) {
    zmq::message_t msg;
    zmq::message_t holla(10);
    cout << "waiting." << endl;
    cout << clients.recv(&msg) << endl;
    cout << "got it." << endl;
    cout << clients.send(holla) << endl;
  }
  return 0;
}


and client (using DEALER):

int main () {
  const size_t nreq(6);
  zmq::context_t context (1);
  zmq::socket_t socket (context, ZMQ_DEALER);

  cout << "Connecting to hello world server..." << endl;
  socket.connect ("tcp://localhost:5555");

  while (1) {
    for (int request_nbr = 0; request_nbr < nreq; request_nbr++) {
      zmq::message_t request (6);
      memcpy (request.data(), "Hello", 5);
      cout << "Sending Hello " << request_nbr << "..." << endl;
      cout << socket.send (request) << endl;
      zmq::message_t reply;
      socket.recv (&reply);
      cout << "Received World " << request_nbr << endl;
    }
  }
  return 0;
}


when I run, I get the following:

on the client:

warmstrong at krypton:~/dvl/zguide/examples/C++$ ./hwclient
Connecting to hello world server...
Sending Hello 0...
1


and on the server:
warmstrong at krypton:~/dvl/zguide/examples/C++$ ./mtserver
waiting.

Thanks very much.

-Whit