text: /*
      Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
  
      This file is part of libzmq, the ZeroMQ core engine in C++.
  
      libzmq is free software; you can redistribute it and/or modify it under
      the terms of the GNU Lesser General Public License (LGPL) as published
      by the Free Software Foundation; either version 3 of the License, or
      (at your option) any later version.
  
      As a special exception, the Contributors give you permission to link
      this library with independent modules to produce an executable,
      regardless of the license terms of these independent modules, and to
      copy and distribute the resulting executable under terms of your choice,
      provided that you also meet, for each linked independent module, the
      terms and conditions of the license of that module. An independent
      module is a module which is not derived from or based on this library.
      If you modify this library, you must extend this exception to your
      version of the library.
  
      libzmq is distributed in the hope that it will be useful, but WITHOUT
      ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
      FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
      License for more details.
  
      You should have received a copy of the GNU Lesser General Public License
      along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
  
  #include "testutil.hpp"
  
  int msg_send (zmq_msg_t *msg_, void *s_, const char* group_, const char* body_)
  {
      int rc = zmq_msg_init_size (msg_, strlen (body_));
      if (rc != 0)
          return rc;
  
      memcpy (zmq_msg_data (msg_), body_, strlen (body_));
  
      rc = zmq_msg_set_group (msg_, group_);
      if (rc != 0) {
          zmq_msg_close (msg_);
          return rc;
      }
  
      rc = zmq_msg_send (msg_, s_, 0);
  
      zmq_msg_close (msg_);
  
      return rc;
  }
  
  int msg_recv_cmp (zmq_msg_t *msg_, void *s_, const char* group_, const char* body_)
  {
      int rc = zmq_msg_init (msg_);
      if (rc != 0)
          return -1;
  
      int recv_rc = zmq_msg_recv (msg_, s_, 0);
      if (recv_rc == -1)
          return -1;
  
      if (strcmp (zmq_msg_group (msg_), group_) != 0)
      {
          zmq_msg_close (msg_);
          return -1;
      }
  
      char * body = (char*) malloc (sizeof(char) * (zmq_msg_size (msg_) + 1));
      memcpy (body, zmq_msg_data (msg_), zmq_msg_size (msg_));
      body [zmq_msg_size (msg_)] = '\0';
  
      if (strcmp (body, body_) != 0)
      {
          zmq_msg_close (msg_);
          return -1;
      }
  
      zmq_msg_close (msg_);
      free(body);
      return recv_rc;
  }
  
  int main (void)
  {
      size_t len = MAX_SOCKET_STRING;
      char my_endpoint[MAX_SOCKET_STRING];
      setup_test_environment ();
      void *ctx = zmq_ctx_new ();
      assert (ctx);
  
      void *radio = zmq_socket (ctx, ZMQ_RADIO);
      void *dish = zmq_socket (ctx, ZMQ_DISH);
  
      int rc = zmq_bind (radio, "tcp://127.0.0.1:*");
      assert (rc == 0);
      rc = zmq_getsockopt (radio, ZMQ_LAST_ENDPOINT, my_endpoint, &len);
      assert (rc == 0);
  
      //  Leaving a group which we didn't join
      rc = zmq_leave (dish, "Movies");
      assert (rc == -1);
  
      //  Joining too long group
      char too_long_group[ZMQ_GROUP_MAX_LENGTH + 2];
      for (int index = 0; index < ZMQ_GROUP_MAX_LENGTH + 2; index++)
          too_long_group[index] = 'A';
      too_long_group[ZMQ_GROUP_MAX_LENGTH + 1] = '\0';
      rc = zmq_join (dish, too_long_group);
      assert (rc == -1);
  
      // Joining
      rc = zmq_join (dish, "Movies");
      assert (rc == 0);
  
      // Duplicate Joining
      rc = zmq_join (dish, "Movies");
      assert (rc == -1);
  
      // Connecting
      rc = zmq_connect (dish, my_endpoint);
      assert (rc == 0);
  
      msleep (SETTLE_TIME);
  
      zmq_msg_t msg;
  
      //  This is not going to be sent as dish only subscribe to "Movies"
      rc = msg_send (&msg, radio, "TV", "Friends");
      assert (rc == 7);
  
      //  This is going to be sent to the dish
      rc = msg_send (&msg, radio, "Movies", "Godfather");
      assert (rc == 9);
  
      //  Check the correct message arrived
      rc = msg_recv_cmp (&msg, dish, "Movies", "Godfather");
      assert (rc == 9);
  
      //  Join group during connection optvallen
      rc = zmq_join (dish, "TV");
      assert (rc == 0);
  
      zmq_sleep (1);
  
      //  This should arrive now as we joined the group
      rc = msg_send (&msg, radio, "TV", "Friends");
      assert (rc == 7);
  
      //  Check the correct message arrived
      rc = msg_recv_cmp (&msg, dish, "TV", "Friends");
      assert (rc == 7);
  
      //  Leaving groupr
      rc = zmq_leave (dish, "TV");
      assert (rc == 0);
  
      zmq_sleep (1);
  
      //  This is not going to be sent as dish only subscribe to "Movies"
      rc = msg_send (&msg, radio, "TV", "Friends");
      assert (rc == 7);
  
      //  This is going to be sent to the dish
      rc = msg_send (&msg, radio, "Movies", "Godfather");
      assert (rc == 9);
  
      // test zmq_poll with dish
      zmq_pollitem_t items [] = {
          { radio, 0, ZMQ_POLLIN, 0 }, // read publications
          { dish, 0, ZMQ_POLLIN, 0 }, // read subscriptions
      };
      rc = zmq_poll(items, 2, 2000);
      assert (rc == 1);
      assert (items[1].revents == ZMQ_POLLIN);
  
      //  Check the correct message arrived
      rc = msg_recv_cmp (&msg, dish, "Movies", "Godfather");
      assert (rc == 9);
  
      rc = zmq_close (dish);
      assert (rc == 0);
  
      rc = zmq_close (radio);
      assert (rc == 0);
  
      rc = zmq_ctx_term (ctx);
      assert (rc == 0);
  
      return 0 ;
  }
  