---

Connector.cpp

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// Connector.cpp
// $Id: Connector.cpp,v 1.1.1.4.2.1 2003/04/16 16:41:14 taoadmin Exp $

#ifndef ACE_CONNECTOR_C
#define ACE_CONNECTOR_C

#include "ace/Connector.h"

#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */

ACE_RCSID(ace, Connector, "$Id: Connector.cpp,v 1.1.1.4.2.1 2003/04/16 16:41:14 taoadmin Exp $")

ACE_ALLOC_HOOK_DEFINE(ACE_Connector)

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> void
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::dump (void) const
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::dump");

  ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
  ACE_DEBUG ((LM_DEBUG,  ACE_LIB_TEXT ("\nclosing_ = %d"), this->closing_));
  ACE_DEBUG ((LM_DEBUG,  ACE_LIB_TEXT ("\nflags_ = %d"), this->flags_));
  this->handler_map_.dump ();
  ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
}

// Bridge method for creating a SVC_HANDLER.  The strategy for
// creating a SVC_HANDLER are configured into the Acceptor via it's
// <creation_strategy_>.  The default is to create a new SVC_HANDLER.
// However, subclasses can override this strategy to perform
// SVC_HANDLER creation in any way that they like (such as creating
// subclass instances of SVC_HANDLER, using a singleton, dynamically
// linking the handler, etc.).

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::make_svc_handler (SVC_HANDLER *&sh)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::make_svc_handler");

  if (sh == 0)
    ACE_NEW_RETURN (sh,
                    SVC_HANDLER,
                    -1);

  // Set the reactor of the newly created <SVC_HANDLER> to the same
  // reactor that this <Connector> is using.
  sh->reactor (this->reactor ());
  return 0;
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::activate_svc_handler (SVC_HANDLER *svc_handler)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::activate_svc_handler");
  // No errors initially
  int error = 0;

  // See if we should enable non-blocking I/O on the <svc_handler>'s
  // peer.
  if (ACE_BIT_ENABLED (this->flags_, ACE_NONBLOCK) != 0)
    {
      if (svc_handler->peer ().enable (ACE_NONBLOCK) == -1)
        error = 1;
    }
  // Otherwise, make sure it's disabled by default.
  else if (svc_handler->peer ().disable (ACE_NONBLOCK) == -1)
    error = 1;

  // We are connected now, so try to open things up.
  if (error || svc_handler->open ((void *) this) == -1)
    {
      // Make sure to close down the <svc_handler> to avoid descriptor
      // leaks.
      svc_handler->close (0);
      return -1;
    }
  else
    return 0;
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> ACE_PEER_CONNECTOR &
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::connector (void) const
{
  return ACE_const_cast (ACE_PEER_CONNECTOR &, this->connector_);
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::connect_svc_handler (
  SVC_HANDLER *&svc_handler,
  const ACE_PEER_CONNECTOR_ADDR &remote_addr,
  ACE_Time_Value *timeout,
  const ACE_PEER_CONNECTOR_ADDR &local_addr,
  int reuse_addr,
  int flags,
  int perms)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::connect_svc_handler");

  return this->connector_.connect (svc_handler->peer (),
                                   remote_addr,
                                   timeout,
                                   local_addr,
                                   reuse_addr,
                                   flags,
                                   perms);
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::connect_svc_handler (
  SVC_HANDLER *&svc_handler,
  SVC_HANDLER *&sh_copy,
  const ACE_PEER_CONNECTOR_ADDR &remote_addr,
  ACE_Time_Value *timeout,
  const ACE_PEER_CONNECTOR_ADDR &local_addr,
  int reuse_addr,
  int flags,
  int perms)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::connect_svc_handler");

  sh_copy = svc_handler;
  return this->connector_.connect (svc_handler->peer (),
                                   remote_addr,
                                   timeout,
                                   local_addr,
                                   reuse_addr,
                                   flags,
                                   perms);
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::open (ACE_Reactor *r, int flags)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::open");
  this->reactor (r);
  this->flags_ = flags;
  this->closing_ = 0;
  return 0;
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1>
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::ACE_Connector (ACE_Reactor *r, int flags)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::ACE_Connector");
  (void) this->open (r, flags);
}

template <class SVC_HANDLER>
ACE_Svc_Tuple<SVC_HANDLER>::ACE_Svc_Tuple (
  SVC_HANDLER *sh,
  ACE_HANDLE handle,
  const void *arg,
  long id)
  : svc_handler_ (sh),
    handle_ (handle),
    arg_ (arg),
    cancellation_id_ (id),
    refcount_ (1)
{
  ACE_TRACE ("ACE_Svc_Tuple<SVC_HANDLER>::ACE_Svc_Tuple");
}

template <class SVC_HANDLER>
ACE_Svc_Tuple<SVC_HANDLER>::~ACE_Svc_Tuple (void)
{
}

template <class SVC_HANDLER> SVC_HANDLER *
ACE_Svc_Tuple<SVC_HANDLER>::svc_handler (void)
{
  ACE_TRACE ("ACE_Svc_Tuple<SVC_HANDLER>::svc_handler");
  return this->svc_handler_;
}

template <class SVC_HANDLER> const void *
ACE_Svc_Tuple<SVC_HANDLER>::arg (void)
{
  ACE_TRACE ("ACE_Svc_Tuple<SVC_HANDLER>::arg");
  return this->arg_;
}

template <class SVC_HANDLER> void
ACE_Svc_Tuple<SVC_HANDLER>::arg (const void *v)
{
  ACE_TRACE ("ACE_Svc_Tuple<SVC_HANDLER>::arg");
  this->arg_ = v;
}

template <class SVC_HANDLER> ACE_HANDLE
ACE_Svc_Tuple<SVC_HANDLER>::handle (void)
{
  ACE_TRACE ("ACE_Svc_Tuple<SVC_HANDLER>::handle");
  return this->handle_;
}

template <class SVC_HANDLER> void
ACE_Svc_Tuple<SVC_HANDLER>::handle (ACE_HANDLE h)
{
  ACE_TRACE ("ACE_Svc_Tuple<SVC_HANDLER>::handle");
  this->handle_ = h;
}

template <class SVC_HANDLER> long
ACE_Svc_Tuple<SVC_HANDLER>::cancellation_id (void)
{
  ACE_TRACE ("ACE_Svc_Tuple<SVC_HANDLER>::cancellation_id");
  return this->cancellation_id_;
}

template <class SVC_HANDLER> void
ACE_Svc_Tuple<SVC_HANDLER>::cancellation_id (long id)
{
  ACE_TRACE ("ACE_Svc_Tuple<SVC_HANDLER>::cancellation_id");
  this->cancellation_id_ = id;
}

template <class SVC_HANDLER> long
ACE_Svc_Tuple<SVC_HANDLER>::incr_refcount (void)
{
  ACE_TRACE ("ACE_Svc_Tuple<SVC_HANDLER>::incr_refcount");
  return ++this->refcount_;
}

template <class SVC_HANDLER> long
ACE_Svc_Tuple<SVC_HANDLER>::decr_refcount (void)
{
  ACE_TRACE ("ACE_Svc_Tuple<SVC_HANDLER>::decr_refcount");
  if (--this->refcount_ > 0)
    return this->refcount_;

  ACE_ASSERT (this->refcount_ == 0);

  delete this;

  return 0;
}

template <class SVC_HANDLER> void
ACE_Svc_Tuple<SVC_HANDLER>::dump (void) const
{
  ACE_TRACE ("ACE_Svc_Tuple<SVC_HANDLER>::dump");

  ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
  ACE_DEBUG ((LM_DEBUG,  ACE_LIB_TEXT ("svc_handler_ = %x"), this->svc_handler_));
  ACE_DEBUG ((LM_DEBUG,  ACE_LIB_TEXT ("\narg_ = %x"), this->arg_));
  ACE_DEBUG ((LM_DEBUG,  ACE_LIB_TEXT ("\ncancellation_id_ = %d"), this->cancellation_id_));
  ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
}

// This method is called if a connection times out before completing.
// In this case, we call our cleanup_AST() method to cleanup the
// descriptor from the ACE_Connector's table.

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::handle_timeout (
  const ACE_Time_Value &tv,
  const void *arg)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::handle_timeout");
  AST *ast = 0;

  if (this->cleanup_AST (((AST *) arg)->handle (),
                         ast) == -1)
    {
      // Matches the creation time refcount for AST, which is 1
      this->decr_ast_refcount ((AST *) arg);
      return -1;
    }
  else
    {
      ACE_ASSERT (((AST *) arg) == ast);

      // We may need this seemingly unnecessary assignment to work
      // around a bug with MSVC++?
      SVC_HANDLER *sh = ast->svc_handler ();

      // Forward to the SVC_HANDLER the <arg> that was passed in as a
      // magic cookie during ACE_Connector::connect().  This gives the
      // SVC_HANDLER an opportunity to take corrective action (e.g.,
      // wait a few milliseconds and try to reconnect again.
      int result = sh->handle_timeout (tv, ast->arg ());

      // Matches the creation time refcount for AST, which is 1.
      this->decr_ast_refcount (ast);

      if (result == -1)
        sh->handle_close (sh->get_handle (),
                          ACE_Event_Handler::TIMER_MASK);
      return 0;
    }
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::cleanup_AST (
  ACE_HANDLE handle,
  ACE_Svc_Tuple<SVC_HANDLER> *&ast)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::cleanup_AST");

  ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX,
                            ace_mon,
                            this->mutex_,
                            -1));

  // Locate the ACE_Svc_Handler corresponding to the socket
  // descriptor.
  if (this->handler_map_.unbind (handle, ast) == -1)
    {
      // Error, entry not found in map.
      errno = ENOENT;
      return -1;
    }

  // Matches incr_refcount () in create_AST () after registering
  // with the map.
  ast->decr_refcount ();

  // Try to remove from ACE_Timer_Queue but if it's not there we
  // ignore the error.
  if (this->reactor ()->cancel_timer (ast->cancellation_id ()))
    {
      // Matches incr_refcount () in create_AST () after registering
      // the timer
      ast->decr_refcount ();
    }


  ACE_Reactor_Mask m =
    ACE_Event_Handler::ALL_EVENTS_MASK | ACE_Event_Handler::DONT_CALL;

  // Remove ACE_HANDLE from ACE_Reactor.
  if (this->reactor ()->remove_handler (handle, m) == 0)
    {
      // Matches incr_refcount () in create_AST () after registering
      // with the Reactor.
      ast->decr_refcount ();
    }
  return 0;
}

// Called when a failure occurs during asynchronous connection
// establishment.  Simply delegate all work to this->handle_output().

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::handle_input (ACE_HANDLE h)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::handle_input");
  AST *ast = 0;

  if (this->cleanup_AST (h, ast) != -1)
    {
      ACE_ASSERT (ast != 0);
      ast->svc_handler ()->close (0);

      // Matches the creation time refcount for AST, which is 1
      this->decr_ast_refcount (ast);
    }

  return 0; // Already removed from the ACE_Reactor.
}

// Finalize a connection established in non-blocking mode.  When a
// non-blocking connect *succeeds* the descriptor becomes enabled for
// writing...  Likewise, it is generally the case that when a
// non-blocking connect *fails* the descriptor becomes enabled for
// reading.

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::handle_output (ACE_HANDLE handle)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::handle_output");
  AST *ast = 0;

  if (this->cleanup_AST (handle, ast) == -1)
    {
      return 0;
    }
  ACE_ASSERT (ast != 0);   // This shouldn't happen!

  // Try to find out if the reactor uses event associations for the
  // handles it waits on. If so we need to reset it.
  int reset_new_handle = this->reactor ()->uses_event_associations ();

  if (reset_new_handle)
    this->connector_.reset_new_handle (handle);

  // Transfer ownership of the ACE_HANDLE to the SVC_HANDLER.
  ast->svc_handler ()->set_handle (handle);

  ACE_PEER_CONNECTOR_ADDR raddr;

  // Check to see if we're connected.
  if (ast->svc_handler ()->peer ().get_remote_addr (raddr) != -1)
    this->activate_svc_handler (ast->svc_handler ());
  else // Somethings gone wrong, so close down...
    {
#if defined (ACE_WIN32)
      // ACE_DEBUG ((LM_DEBUG, "errno %d; Sleeping to retry get_remote_addr\n", errno));
      // Win32 (at least prior to Windows 2000) has a timing problem.
      // If you check to see if the connection has completed too fast,
      // it will fail - so wait 35 milliseconds to let it catch up.
      ACE_Time_Value tv (0, ACE_NON_BLOCKING_BUG_DELAY);
      ACE_OS::sleep (tv);
      if (ast->svc_handler ()->peer ().get_remote_addr (raddr) != -1)
        this->activate_svc_handler (ast->svc_handler ());
      else // do the svc handler close below...
#endif /* ACE_WIN32 */
       ast->svc_handler ()->close (0);
    }
  // Matches the creation time refcount for AST, which is 1
  this->decr_ast_refcount (ast);
  return 0;
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::resume_handler (void)
{
  return ACE_Event_Handler::ACE_EVENT_HANDLER_NOT_RESUMED;
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::handle_exception (ACE_HANDLE h)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::handle_exception");

  // On Win32, the except mask must also be set for asynchronous
  // connects.

  return this->handle_output (h);
}

// Initiate connection to peer.

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::connect (
  SVC_HANDLER *&sh,
  const ACE_PEER_CONNECTOR_ADDR &remote_addr,
  const ACE_Synch_Options &synch_options,
  const ACE_PEER_CONNECTOR_ADDR &local_addr,
  int reuse_addr,
  int flags,
  int perms)
{
  return this->connect_i (sh,
                          0,
                          remote_addr,
                          synch_options,
                          local_addr,
                          reuse_addr,
                          flags,
                          perms);
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::connect (
  SVC_HANDLER *&sh,
  SVC_HANDLER *&sh_copy,
  const ACE_PEER_CONNECTOR_ADDR &remote_addr,
  const ACE_Synch_Options &synch_options,
  const ACE_PEER_CONNECTOR_ADDR &local_addr,
  int reuse_addr,
  int flags,
  int perms)
{
  return this->connect_i (sh,
                          &sh_copy,
                          remote_addr,
                          synch_options,
                          local_addr,
                          reuse_addr,
                          flags,
                          perms);
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::connect_i (
  SVC_HANDLER *&sh,
  SVC_HANDLER **sh_copy,
  const ACE_PEER_CONNECTOR_ADDR &remote_addr,
  const ACE_Synch_Options &synch_options,
  const ACE_PEER_CONNECTOR_ADDR &local_addr,
  int reuse_addr,
  int flags,
  int perms)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::connect_i");

  // If the user hasn't supplied us with a <SVC_HANDLER> we'll use the
  // factory method to create one.  Otherwise, things will remain as
  // they are...
  if (this->make_svc_handler (sh) == -1)
    return -1;

  ACE_Time_Value *timeout;
  int use_reactor = synch_options[ACE_Synch_Options::USE_REACTOR];

  if (use_reactor)
    timeout = (ACE_Time_Value *) &ACE_Time_Value::zero;
  else
    timeout = (ACE_Time_Value *) synch_options.time_value ();

  int result;
  if (sh_copy == 0)
    result = this->connect_svc_handler (sh,
                                        remote_addr,
                                        timeout,
                                        local_addr,
                                        reuse_addr,
                                        flags,
                                        perms);
  else
    result = this->connect_svc_handler (sh,
                                        *sh_copy,
                                        remote_addr,
                                        timeout,
                                        local_addr,
                                        reuse_addr,
                                        flags,
                                        perms);

  // Delegate to connection strategy.
  if (result == -1)
    {
      if (use_reactor && errno == EWOULDBLOCK)
        {
          // If the connection hasn't completed and we are using
          // non-blocking semantics then register ourselves with the
          // ACE_Reactor so that it will call us back when the
          // connection is complete or we timeout, whichever comes
          // first...
          int result;

          if (sh_copy == 0)
            result = this->create_AST (sh, synch_options);
          else
            result = this->create_AST (*sh_copy, synch_options);

          // If for some reason the <create_AST> call failed, then
          // <errno> will be set to the new error.  If the call
          // succeeds, however, we need to make sure that <errno>
          // remains set to <EWOULDBLOCK>.
          if (result == 0)
            errno = EWOULDBLOCK;
        }
      else
        {
          // Save/restore errno.
          ACE_Errno_Guard error (errno);
          // Make sure to close down the service handler to avoid
          // handle leaks.
          if (sh_copy == 0)
            {
              if (sh)
                sh->close (0);
            }
          else if (*sh_copy)
            (*sh_copy)->close (0);
        }
      return -1;
    }
  else
    // Activate immediately if we are connected.
    return this->activate_svc_handler (sh);
}

// Initiate connection to peer.

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::connect_n (
  size_t n,
  SVC_HANDLER *sh[],
  ACE_PEER_CONNECTOR_ADDR remote_addrs[],
  ACE_TCHAR *failed_svc_handlers,
  const ACE_Synch_Options &synch_options)
{
  int result = 0;

  for (size_t i = 0; i < n; i++)
    {
      if (this->connect (sh[i], remote_addrs[i], synch_options) == -1
          && !(synch_options[ACE_Synch_Options::USE_REACTOR]
               && errno == EWOULDBLOCK))
        {
          result = -1;
          if (failed_svc_handlers != 0)
            // Mark this entry as having failed.
            failed_svc_handlers[i] = 1;
        }
      else if (failed_svc_handlers != 0)
        // Mark this entry as having succeeded.
        failed_svc_handlers[i] = 0;
    }

  return result;
}

// Cancel a <svc_handler> that was started asynchronously.
template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::cancel (SVC_HANDLER *sh)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::cancel");
  MAP_ITERATOR mi (this->handler_map_);

  for (MAP_ENTRY *me = 0;
       mi.next (me) != 0;
       mi.advance ())
    if (me->int_id_->svc_handler () == sh)
      {
        AST *ast = 0;

        if (this->cleanup_AST (me->ext_id_, ast) != -1)
          this->decr_ast_refcount (ast);

        return 0;
      }

  return -1;
}

// Register the pending SVC_HANDLER with the map so that it can be
// activated later on when the connection complets.

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::create_AST (
  SVC_HANDLER *sh,
  const ACE_Synch_Options &synch_options)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::create_AST");

  ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX,
                            ace_mon,
                            this->mutex_,
                            -1));

  ACE_HANDLE handle = sh->get_handle ();
  AST *ast;

  // AST is created with a refcount
  ACE_NEW_RETURN (ast,
                  AST (sh,
                       handle,
                       synch_options.arg (), -1),
                  -1);

  // Register this with the reactor for connection events.
  ACE_Reactor_Mask mask = ACE_Event_Handler::CONNECT_MASK;

  // Bind ACE_Svc_Tuple with the ACE_HANDLE we're trying to connect.
  if (this->handler_map_.bind (handle, ast) == -1)
    goto fail1;

  // Increment the refcount of the AST to indicate registration with
  // the map.
  ast->incr_refcount ();

  if (this->reactor ()->register_handler (handle,
                                          this,
                                          mask) == -1)
    goto fail2;

  // Increment the refcount of the AST. This increment is for access
  // from the Reactor. Though we register <this> with the Reactor,
  // every dispatch from the Reactor actually looks for <ast> and
  // hence the refcount increment.
  (void) ast->incr_refcount ();

  {
    // If we're starting connection under timer control then we need to
    // schedule a timeout with the ACE_Reactor.
    ACE_Time_Value *tv =
      ACE_const_cast (ACE_Time_Value *,
                      synch_options.time_value ());
    if (tv != 0)
      {
        int cancellation_id =
          this->reactor ()->schedule_timer
          (this,
           (const void *) ast,
           *tv);
        if (cancellation_id == -1)
          goto fail3;

        // Increment the refcount of the AST. This increment is for access
        // from the timer queue. The same argument used for Rector
        // registration holds true here too.
        (void) ast->incr_refcount ();

        ast->cancellation_id (cancellation_id);
        return 0;
      }
  }
  return 0; // Ok, everything worked just fine...

  // Undo previous actions using the ol' "goto label and fallthru"
  // trick...
fail3:
  this->reactor ()->remove_handler
    (this, mask | ACE_Event_Handler::DONT_CALL);
  /* FALLTHRU */
fail2:
  this->handler_map_.unbind (handle);
  /* FALLTHRU */
fail1:

  // Close the svc_handler
  sh->close (0);

  ast->decr_refcount ();
  return -1;
}

// Terminate the Client ACE_Connector by iterating over any
// unconnected ACE_Svc_Handler's and removing them from the
// ACE_Reactor.  Note that we can't call handle_close() back at this
// point since we own these things and we'll just get called
// recursively!

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::close (void)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::close");
  return this->handle_close ();
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::handle_close (ACE_HANDLE, ACE_Reactor_Mask)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::handle_close");

  if (this->reactor () != 0 && this->closing_ == 0)
    {
      // We're closing down now, so make sure not to call ourselves
      // recursively via other calls to handle_close() (e.g., from the
      // Timer_Queue).
      this->closing_ = 1;

      for (;;)
        {
          // Create an iterator.
          MAP_ITERATOR iterator = this->handler_map_.begin ();

          // If we reach the end of the map, break the loop.
          if (iterator == this->handler_map_.end ())
            break;

          // Get the first handle.
          ACE_HANDLE handle = (*iterator).ext_id_;

          // Clean it up.
          AST *ast = 0;
          int r = this->cleanup_AST (handle, ast);

          // Close the svc_handler.
          if (r != -1)
            {
              ACE_ASSERT (ast != 0);
              ast->svc_handler ()->close (0);

              // Zap the ast.
              this->decr_ast_refcount (ast);
            }


        }
    }

  return 0;
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::fini (void)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::fini");

  // Make sure to call close here since our destructor might not be
  // called if we're being dynamically linked via the svc.conf.
  this->handler_map_.close ();

  // Make sure we call our handle_close(), not a subclass's!
  return ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::handle_close ();
}

// Hook called by the explicit dynamic linking facility.

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::init (int, ACE_TCHAR *[])
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::init");
  return -1;
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::suspend (void)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::suspend");
  return -1;
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::resume (void)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::resume");
  return -1;
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::info (ACE_TCHAR **strp, size_t length) const
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::info");
  ACE_TCHAR buf[BUFSIZ];

  ACE_OS::sprintf (buf,
                   ACE_LIB_TEXT ("%s\t %s"),
                   ACE_LIB_TEXT ("ACE_Connector"),
                   ACE_LIB_TEXT ("# connector factory\n"));

  if (*strp == 0 && (*strp = ACE_OS::strdup (buf)) == 0)
    return -1;
  else
    ACE_OS::strsncpy (*strp, buf, length);
  return ACE_static_cast (int, ACE_OS::strlen (buf));
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1>
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::~ACE_Connector (void)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::~ACE_Connector");
  // We will call our handle_close(), not a subclass's, due to the way
  // that C++ destructors work.
  this->handle_close ();
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> long
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::incr_ast_refcount (
    ACE_Svc_Tuple<SVC_HANDLER> *ast)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::incr_ast_refcount");
  ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX,
                            ace_mon,
                            this->mutex_,
                            -1));

  return ast->incr_refcount ();
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> long
ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::decr_ast_refcount (
    ACE_Svc_Tuple<SVC_HANDLER> *ast)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::decr_ast_refcount");
  ACE_MT (ACE_GUARD_RETURN (ACE_SYNCH_MUTEX,
                            ace_mon,
                            this->mutex_,
                            -1));

  return ast->decr_refcount ();
}

/***********************************************************/
template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Strategy_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::open (ACE_Reactor *r, int flags)
{
  ACE_TRACE ("ACE_Strategy_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::open");
  return this->open (r, 0, 0, 0, flags);
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Strategy_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::open
  (ACE_Reactor *r,
   ACE_Creation_Strategy<SVC_HANDLER> *cre_s,
   ACE_Connect_Strategy<SVC_HANDLER, ACE_PEER_CONNECTOR_2> *conn_s,
   ACE_Concurrency_Strategy<SVC_HANDLER> *con_s,
   int flags)
{
  ACE_TRACE ("ACE_Strategy_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::open");

  this->reactor (r);

  // @@ Not implemented yet.
  // this->flags_ = flags;
  ACE_UNUSED_ARG (flags);

  // Initialize the creation strategy.

  // First we decide if we need to clean up.
  if (this->creation_strategy_ != 0 &&
      this->delete_creation_strategy_ != 0 &&
      cre_s != 0)
    {
      delete this->creation_strategy_;
      this->creation_strategy_ = 0;
      this->delete_creation_strategy_ = 0;
    }

  if (cre_s != 0)
    this->creation_strategy_ = cre_s;
  else if (this->creation_strategy_ == 0)
    {
      ACE_NEW_RETURN (this->creation_strategy_,
                      CREATION_STRATEGY,
                      -1);
      this->delete_creation_strategy_ = 1;
    }


  // Initialize the accept strategy.

  if (this->connect_strategy_ != 0 &&
      this->delete_connect_strategy_ != 0 &&
      conn_s != 0)
    {
      delete this->connect_strategy_;
      this->connect_strategy_ = 0;
      this->delete_connect_strategy_ = 0;
    }

    if (conn_s != 0)
      this->connect_strategy_ = conn_s;
    else if (this->connect_strategy_ == 0)
      {
        ACE_NEW_RETURN (this->connect_strategy_,
                        CONNECT_STRATEGY,
                        -1);
        this->delete_connect_strategy_ = 1;
      }

  // Initialize the concurrency strategy.

  if (this->concurrency_strategy_ != 0 &&
      this->delete_concurrency_strategy_ != 0 &&
      con_s != 0)
    {
      delete this->concurrency_strategy_;
      this->concurrency_strategy_ = 0;
      this->delete_concurrency_strategy_ = 0;
    }

  if (con_s != 0)
    this->concurrency_strategy_ = con_s;
  else if (this->concurrency_strategy_ == 0)
    {
      ACE_NEW_RETURN (this->concurrency_strategy_,
                      CONCURRENCY_STRATEGY,
                      -1);
      this->delete_concurrency_strategy_ = 1;
    }

  return 0;
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1>
ACE_Strategy_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::ACE_Strategy_Connector
  (ACE_Reactor *reactor,
   ACE_Creation_Strategy<SVC_HANDLER> *cre_s,
   ACE_Connect_Strategy<SVC_HANDLER, ACE_PEER_CONNECTOR_2> *conn_s,
   ACE_Concurrency_Strategy<SVC_HANDLER> *con_s,
   int flags)
    : creation_strategy_ (0),
      delete_creation_strategy_ (0),
      connect_strategy_ (0),
      delete_connect_strategy_ (0),
      concurrency_strategy_ (0),
      delete_concurrency_strategy_ (0)
{
  ACE_TRACE ("ACE_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::ACE_Strategy_Connector");

  if (this->open (reactor, cre_s, conn_s, con_s, flags) == -1)
    ACE_ERROR ((LM_ERROR,  ACE_LIB_TEXT ("%p\n"),  ACE_LIB_TEXT ("ACE_Strategy_Connector::ACE_Strategy_Connector")));
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1>
ACE_Strategy_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::~ACE_Strategy_Connector (void)
{
  ACE_TRACE ("ACE_Strategy_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::~ACE_Strategy_Connector");

  // Close down
  this->close ();
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Strategy_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::close (void)
{
  if (this->delete_creation_strategy_)
    delete this->creation_strategy_;
  this->delete_creation_strategy_ = 0;
  this->creation_strategy_ = 0;

  if (this->delete_connect_strategy_)
    delete this->connect_strategy_;
  this->delete_connect_strategy_ = 0;
  this->connect_strategy_ = 0;

  if (this->delete_concurrency_strategy_)
    delete this->concurrency_strategy_;
  this->delete_concurrency_strategy_ = 0;
  this->concurrency_strategy_ = 0;

  return SUPER::close ();
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Strategy_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::make_svc_handler (SVC_HANDLER *&sh)
{
  return this->creation_strategy_->make_svc_handler (sh);
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Strategy_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::connect_svc_handler
  (SVC_HANDLER *&sh,
   const ACE_PEER_CONNECTOR_ADDR &remote_addr,
   ACE_Time_Value *timeout,
   const ACE_PEER_CONNECTOR_ADDR &local_addr,
   int reuse_addr,
   int flags,
   int perms)
{
  return this->connect_strategy_->connect_svc_handler (sh,
                                                       remote_addr,
                                                       timeout,
                                                       local_addr,
                                                       reuse_addr,
                                                       flags,
                                                       perms);
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Strategy_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::connect_svc_handler
  (SVC_HANDLER *&sh,
   SVC_HANDLER *&sh_copy,
   const ACE_PEER_CONNECTOR_ADDR &remote_addr,
   ACE_Time_Value *timeout,
   const ACE_PEER_CONNECTOR_ADDR &local_addr,
   int reuse_addr,
   int flags,
   int perms)
{
  return this->connect_strategy_->connect_svc_handler (sh,
                                                       sh_copy,
                                                       remote_addr,
                                                       timeout,
                                                       local_addr,
                                                       reuse_addr,
                                                       flags,
                                                       perms);
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> int
ACE_Strategy_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::activate_svc_handler (SVC_HANDLER *svc_handler)
{
  return this->concurrency_strategy_->activate_svc_handler (svc_handler, this);
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> ACE_Creation_Strategy<SVC_HANDLER> *
ACE_Strategy_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::creation_strategy (void) const
{
  return this->creation_strategy_;
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> ACE_Connect_Strategy<SVC_HANDLER, ACE_PEER_CONNECTOR_2> *
ACE_Strategy_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::connect_strategy (void) const
{
  return this->connect_strategy_;
}

template <class SVC_HANDLER, ACE_PEER_CONNECTOR_1> ACE_Concurrency_Strategy<SVC_HANDLER> *
ACE_Strategy_Connector<SVC_HANDLER, ACE_PEER_CONNECTOR_2>::concurrency_strategy (void) const
{
  return this->concurrency_strategy_;
}

#endif /* ACE_CONNECTOR_C */

---