basic_robust.cpp

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// $Id: Basic_Robust.cpp 58800 2004-06-29 06:55:58Z jwillemsen $

#include "ace/OS_NS_errno.h"
#include "ace/INET_Addr.h"
#include "ace/SOCK_Stream.h"
#include "ace/SOCK_Connector.h"
#include "ace/Log_Msg.h"
#include "ace/Time_Value.h"

int ACE_TMAIN (int, ACE_TCHAR *[])
{
  /*
   * Here we will use the default ctor and the set()
   * method to configure it. After each set() we will
   * display the address as a string and then connect
   * to each respective server. We can reuse the addr
   * instance once connection has been established.
   *
   // Listing 1 code/ch06
  ACE_INET_Addr addr;
  ...
  addr.set ("HAStatus", ACE_LOCALHOST);
  ...
  addr.set ("HALog", ACE_LOCALHOST);
   // Listing 1
   *
   */

  ACE_INET_Addr addr;
  ACE_TCHAR peerAddress[64];

  // Listing 2 code/ch06
  addr.set (ACE_TEXT("HAStatus"), ACE_LOCALHOST);
  if (addr.addr_to_string (peerAddress,
                           sizeof(peerAddress), 0) == 0)
    {
      ACE_DEBUG ((LM_DEBUG,
                  ACE_TEXT ("(%P|%t) Connecting to %s\n"),
                  peerAddress));
    }
  // Listing 2

  // Listing 3 code/ch06
  ACE_SOCK_Stream status;
  ACE_OS::last_error(0);
  ACE_SOCK_Connector statusConnector (status, addr);
  if (ACE_OS::last_error())
    ACE_ERROR_RETURN ((LM_ERROR,
                       ACE_TEXT ("%p\n"),
                       ACE_TEXT ("status")), 100);
  // Listing 3

  addr.set (ACE_TEXT("HALog"), ACE_LOCALHOST);
  if (addr.addr_to_string (peerAddress,
                           sizeof(peerAddress), 0) == 0)
    {
      ACE_DEBUG ((LM_DEBUG,
                  ACE_TEXT ("(%P|%t) Connecting to %s\n"),
                  peerAddress ));
    }

  // Listing 4 code/ch06
  ACE_SOCK_Connector logConnector;
  ACE_Time_Value timeout (10);
  ACE_SOCK_Stream log;
  if (logConnector.connect (log, addr, &timeout) == -1)
    {
      if (ACE_OS::last_error() == ETIME)
        {
          ACE_DEBUG ((LM_DEBUG,
                      ACE_TEXT ("(%P|%t) Timeout while ")
                      ACE_TEXT ("connecting to log server\n")));
        }
      else
        {
          ACE_ERROR ((LM_ERROR,
                      ACE_TEXT ("%p\n"),
                      ACE_TEXT ("log")));
        }
      return (101);
    }
  // Listing 4

  /*
   * We generally let the OS pick our local port number but
   * if you want, you can choose that also:
   // Listing 5 code/ch06
  ACE_SOCK_Connector logConnector;
  ACE_INET_Addr local (4200, ACE_LOCALHOST);
  if (logConnector.connect (log, addr, 0, local) == -1)
    {
      ...
   // Listing 5
    }
   */

  char buf[64];

  // Listing 6 code/ch06
  ACE_Time_Value sendTimeout (0, 5);
  if (status.send_n ("uptime\n", 7, &sendTimeout) == -1)
    {
      if (ACE_OS::last_error() == ETIME)
        {
          ACE_DEBUG ((LM_DEBUG,
                      ACE_TEXT ("(%P|%t) Timeout while sending ")
                      ACE_TEXT ("query to status server\n")));
        }
      // Listing 6
      else
        {
          ACE_ERROR ((LM_ERROR,
                      ACE_TEXT ("%p\n"),
                      ACE_TEXT ("send_n")));
        }
      return (102);
    }

  // Listing 7 code/ch06
  ssize_t bc ;
  ACE_Time_Value recvTimeout (0, 1);
  if ((bc = status.recv (buf, sizeof(buf), &recvTimeout)) == -1)
    {
      ACE_ERROR ((LM_ERROR,
                  ACE_TEXT ("%p\n"),
                  ACE_TEXT ("recv")));
      return (103);
    }

  log.send_n (buf, bc);
  // Listing 7

  status.close ();
  log.close ();

  return (0);
}