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SOCK_CODgram.cpp

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#include "ace_pch.h"
// SOCK_CODgram.cpp
// $Id: SOCK_CODgram.cpp,v 1.1.1.3.40.1 2003/03/13 19:44:22 chad Exp $

#include "ace/SOCK_CODgram.h"
#include "ace/Log_Msg.h"

#if defined (ACE_LACKS_INLINE_FUNCTIONS)
#include "ace/SOCK_CODgram.i"
#endif

ACE_RCSID(ace, SOCK_CODgram, "$Id: SOCK_CODgram.cpp,v 1.1.1.3.40.1 2003/03/13 19:44:22 chad Exp $")

ACE_ALLOC_HOOK_DEFINE(ACE_SOCK_CODgram)

void
ACE_SOCK_CODgram::dump (void) const
{
  ACE_TRACE ("ACE_SOCK_CODgram::dump");
}

// Here's the general-purpose constructor.

ACE_SOCK_CODgram::ACE_SOCK_CODgram (const ACE_Addr &remote, const ACE_Addr &local, 
                                    int protocol_family, int protocol, 
                                    int reuse_addr)
{
  ACE_TRACE ("ACE_SOCK_CODgram::ACE_SOCK_CODgram");
  if (this->open (remote, local, 
                  protocol_family, protocol, reuse_addr) == -1)
    ACE_ERROR ((LM_ERROR, ACE_LIB_TEXT ("%p\n"), ACE_LIB_TEXT ("ACE_SOCK_CODgram")));
}

/* This is the general-purpose open routine.  Note that it performs
   a different set of functions depending on the LOCAL and REMOTE
   addresses passed to it.  Here's the basic logic:
   
   1. remote == ACE_Addr::sap_any && local == ACE_Addr::sap_any
         if protocol_family == PF_INET then 
             bind the local address to a randomly generated port number... 

   2. remote == ACE_Addr::sap_any && local != ACE_Addr::sap_any
         we are just binding the local address
         (used primarily by servers)

   3. remote != ACE_Addr::sap_any && local == ACE_Addr::sap_any
         we are connecting to the remote address
         (used primarily by clients)

   4. remote != ACE_Addr::sap_any && local != ACE_Addr::sap_any
         we are binding to the local address 
         and connecting to the remote address 
*/

int
ACE_SOCK_CODgram::open (const ACE_Addr &remote, const ACE_Addr &local,
                        int protocol_family, int protocol,
                        int reuse_addr)
{
  ACE_TRACE ("ACE_SOCK_CODgram::open");
  if (ACE_SOCK::open (SOCK_DGRAM, protocol_family, 
                      protocol, reuse_addr) == -1)
    return -1;
  else
    {
      int error = 0;

      if (local == ACE_Addr::sap_any && remote == ACE_Addr::sap_any)
        {
          // Assign an arbitrary port number from the transient range!!

          if (protocol_family == PF_INET 
              && ACE::bind_port (this->get_handle ()) == -1)
            error = 1;
        }
      // We are binding just the local address. 
      else if (local != ACE_Addr::sap_any && remote == ACE_Addr::sap_any)
        {
          if (ACE_OS::bind (this->get_handle (), (sockaddr *) local.get_addr (), 
                      local.get_size ()) == -1)
            error = 1;
        }
      // We are connecting to the remote address. 
      else if (local == ACE_Addr::sap_any && remote != ACE_Addr::sap_any)
        {
          if (ACE_OS::connect (this->get_handle (), (sockaddr *) remote.get_addr (), 
                         remote.get_size ()) == -1)
            error = 1;
        }
      // We are binding to the local address and connecting to the
      // remote addresses.
      else
        {
          if (ACE_OS::bind (this->get_handle (), (sockaddr *) local.get_addr (), 
                      local.get_size ()) == -1
              || ACE_OS::connect (this->get_handle (), (sockaddr *) remote.get_addr (), 
                            remote.get_size ()) == -1)
            error = 1;
        }
      if (error)
        {
          this->close ();
          this->set_handle (ACE_INVALID_HANDLE);
        }
      return error ? -1 : 0;
    }
}

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