// UPIPE_Connector.cpp
// $Id$

#define ACE_BUILD_DLL
#include "ace/UPIPE_Connector.h"

#if defined (ACE_HAS_THREADS)

ACE_ALLOC_HOOK_DEFINE(ACE_UPIPE_Connector)

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

ACE_UPIPE_Connector::ACE_UPIPE_Connector (void) 
{
  ACE_TRACE ("ACE_UPIPE_Connector::ACE_UPIPE_Connector");
}

int
ACE_UPIPE_Connector::connect (ACE_UPIPE_Stream &new_stream, 
			      const ACE_UPIPE_Addr &addr, 
			      ACE_Time_Value *timeout,
			      const ACE_Addr & /* local_sap */,
			      int /* reuse_addr */,
			      int flags,
			      int perms)
{
  ACE_TRACE ("ACE_UPIPE_Connector::connect");
  ACE_ASSERT (new_stream.get_handle () == ACE_INVALID_HANDLE);
  
  ACE_HANDLE handle = ACE::handle_timed_open (timeout, 
					      addr.get_path_name (),
					      flags, perms);

  if (handle == ACE_INVALID_HANDLE)
    return -1;
#if !defined (ACE_WIN32)
  else if (ACE_OS::isastream (handle) != 1)
    return -1;
#endif
  else // We're connected!
    {
      ACE_MT (ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, new_stream.lock_, -1));

      ACE_UPIPE_Stream *ustream = &new_stream;

      new_stream.set_handle (handle);
      new_stream.remote_addr_ = addr; // class copy.
      new_stream.reference_count_++; 

      // Now send the address of our ACE_UPIPE_Stream over this pipe
      // to our corresponding ACE_UPIPE_Acceptor, so he may link the
      // two streams.
      ssize_t result = ACE_OS::write (handle, 
				      (const char *) &ustream, 
				      sizeof ustream);
      if (result == -1)
	ACE_ERROR ((LM_ERROR, 
		    "ACE_UPIPE_Connector %p\n", 
		    "write to pipe failed"));

      // Wait for confirmation of stream linking.
      ACE_Message_Block *mb_p = 0;

      // Our part is done, wait for server to confirm connection.
      result = new_stream.recv (mb_p, 0);

      // Do *not* coalesce the following two checks for result == -1.
      // They perform different checks and cannot be merged.
      if (result == -1)
	  ACE_ERROR ((LM_ERROR, "ACE_UPIPE_Connector %p\n",
		      "no confirmation from server"));

      if (result == -1)
	this->close ();
      else
	// Close down the new_stream at this point in order to
	// conserve handles.  Note that we don't need the SPIPE
	// connection anymore since we're linked via the Message_Queue
	// now.
	new_stream.ACE_SPIPE::close ();
      return result;
    }
}
#endif /* ACE_HAS_THREADS */