Author: James CE Johnson

ACE Tutorial 009
Sending and receiving datagrams again

As you can see in broadcast_client.cpp, there isn't enough difference to even comment on! Look back to the Tutorial 8 version of this file. The only difference is the addition of the timeout variable passed to recv().

``

    // page04.html,v 1.8 1999/04/03 21:56:26 jcej Exp

    #include "ace/SOCK_Dgram_Bcast.h"
    #include "ace/INET_Addr.h"

    static const u_short PORT = ACE_DEFAULT_SERVER_PORT;

    int
    main (int argc, char *argv[])
    {
      ACE_INET_Addr local ((u_short) 0);
      ACE_INET_Addr remote (PORT, INADDR_BROADCAST);
      ACE_SOCK_Dgram_Bcast dgram;

      if (dgram.open (local) == -1)
        ACE_ERROR_RETURN ((LM_ERROR,
                           "%p\n",
                           "open"),
                          -1);
      char buf[BUFSIZ];

      sprintf (buf,
               argc > 1 ? argv[1] : "Hello World!");
      if (dgram.send (buf,
                      ACE_OS::strlen (buf) + 1,
                      remote) == -1)
        ACE_ERROR_RETURN ((LM_ERROR,
                           "%p\n",
                           "send"),
                          -1);
      ACE_Time_Value timeout (2, 0);
      if (dgram.recv (buf,
                      sizeof (buf),
                      remote,
                      0,
                      &timeout) == -1)
        ACE_ERROR_RETURN ((LM_ERROR,
                           "%p\n",
                           "recv"),
                          -1);
      ACE_DEBUG ((LM_DEBUG,
                  "(%P|%t) The server at (%s) said (%s)\n",
    	      remote.get_host_name (),
                  buf));
      return 0;
    }

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