#include <IIOP_Transport.h>

Inheritance diagram for TAO_IIOP_Transport:

Collaboration diagram for TAO_IIOP_Transport:

Public Member Functions
	TAO_IIOP_Transport (TAO_IIOP_Connection_Handler handler, TAO_ORB_Core orb_core)
	Constructor.
Protected Member Functions
virtual	~TAO_IIOP_Transport (void)
	Destructor.
Private Member Functions
void	set_bidir_context_info (TAO_Operation_Details &opdetails)
	Set the Bidirectional context info in the service context list.
int	get_listen_point (IIOP::ListenPointList &listen_point_list, TAO_Acceptor *acceptor)
Private Attributes
TAO_IIOP_Connection_Handler *	connection_handler_
Overridden Template Methods
Please check the documentation in "tao/Transport.h" for more details.
void	update_protocol_properties (int send_buffer_size, int recv_buffer_size, int no_delay, int enable_network_priority)
	Bridge method to call a similar method on the connection handler.
virtual int	send_request (TAO_Stub stub, TAO_ORB_Core orb_core, TAO_OutputCDR &stream, TAO_Message_Semantics message_semantics, ACE_Time_Value *max_wait_time)
virtual int	send_message (TAO_OutputCDR &stream, TAO_Stub stub=0, TAO_Message_Semantics message_semantics=TAO_TWOWAY_REQUEST, ACE_Time_Value max_time_wait=0)
	Bridge method to call a similar method on the connection handler.
virtual int	tear_listen_point_list (TAO_InputCDR &cdr)
	Bridge method to call a similar method on the connection handler.
virtual TAO_Connection_Handler *	connection_handler_i (void)
	Bridge method to call a similar method on the connection handler.
virtual ACE_Event_Handler *	event_handler_i (void)
	Bridge method to call a similar method on the connection handler.
virtual ssize_t	send (iovec iov, int iovcnt, size_t &bytes_transferred, const ACE_Time_Value timeout=0)
	Bridge method to call a similar method on the connection handler.
virtual ssize_t	recv (char buf, size_t len, const ACE_Time_Value s=0)
	Bridge method to call a similar method on the connection handler.

Detailed Description

Specialization of the base TAO_Transport class to handle the IIOP protocol.

Definition at line 52 of file IIOP_Transport.h.

Constructor & Destructor Documentation

TAO_IIOP_Transport::TAO_IIOP_Transport	(	TAO_IIOP_Connection_Handler *	handler,
		TAO_ORB_Core *	orb_core
	)

Constructor.

Definition at line 26 of file IIOP_Transport.cpp.

  : TAO_Transport (IOP::TAG_INTERNET_IOP,
                   orb_core)
  , connection_handler_ (handler)
{
}

TAO_IIOP_Transport::~TAO_IIOP_Transport ( void ) [protected, virtual]

Destructor.

Protected destructor to enforce proper memory management through the reference counting mechanism.

Definition at line 34 of file IIOP_Transport.cpp.

{
}

Member Function Documentation

TAO_Connection_Handler * TAO_IIOP_Transport::connection_handler_i ( void ) [virtual]

Bridge method to call a similar method on the connection handler.

Implements TAO_Transport.

Definition at line 55 of file IIOP_Transport.cpp.

{
  return this->connection_handler_;
}

ACE_Event_Handler * TAO_IIOP_Transport::event_handler_i ( void ) [protected, virtual]

Bridge method to call a similar method on the connection handler.

Implements TAO_Transport.

Definition at line 49 of file IIOP_Transport.cpp.

{
  return this->connection_handler_;
}

int TAO_IIOP_Transport::get_listen_point	(	IIOP::ListenPointList &	listen_point_list,
		TAO_Acceptor *	acceptor
	)			`[private]`

Add the listen points in acceptor to the listen_point_list if this connection is in the same interface as that of the endpoints in the acceptor

Definition at line 338 of file IIOP_Transport.cpp.

{
  TAO_IIOP_Acceptor *iiop_acceptor =
    dynamic_cast<TAO_IIOP_Acceptor *> (acceptor);

  if (iiop_acceptor == 0)
    return -1;

  // Get the array of endpoints serviced by TAO_IIOP_Acceptor
  const ACE_INET_Addr *endpoint_addr =
    iiop_acceptor->endpoints ();
  size_t count = iiop_acceptor->endpoint_count ();

#if defined (TAO_USE_BROKEN_BIDIR)

  // Note: Looks like there is no point in sending the list of
  // endpoints on interfaces on which this connection has not
  // been established. If this is wrong, please correct me.

  ACE_INET_Addr local_addr;
  if (this->connection_handler_->peer ().get_local_addr (local_addr)
      == -1)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         ACE_TEXT ("TAO (%P|%t) - IIOP_Transport::get_listen_point, ")
                         ACE_TEXT ("could not resolve local host address\n")),
                        -1);
    }
#endif /* TAO_USE_BROKEN_BIDIR */

  for (size_t index = 0; index < count; index++)
    {
#if defined (TAO_USE_BROKEN_BIDIR)
      // Make sure port numbers are equal so the following comparison
      // only concerns the IP(v4/v6) address.
      local_addr.set_port_number (endpoint_addr[index].get_port_number ());

      if (local_addr != endpoint_addr[index])
        continue;
#endif /* TAO_USE_BROKEN_BIDIR */

      // Get the local address of the connection
      CORBA::String_var interface_name;

      // Get the hostname for the local address
      if (iiop_acceptor->hostname (this->orb_core_,
                                   endpoint_addr[index],
                                   interface_name.out ()) == -1)
        {
          ACE_ERROR_RETURN ((LM_ERROR,
                             ACE_TEXT ("TAO (%P|%t) - IIOP_Transport::get_listen_point, ")
                             ACE_TEXT ("could not resolve local host name\n")),
                            -1);
        }

#if defined (ACE_HAS_IPV6)
      // If this is an IPv6 decimal linklocal address containing a scopeid than
      // remove the scopeid from the information being sent.
      const char *cp_scope = 0;
      if (endpoint_addr[index].get_type () == PF_INET6 &&
          (cp_scope = ACE_OS::strchr (interface_name.in (), '%')) != 0)
        {
          CORBA::ULong len = cp_scope - interface_name.in ();
          interface_name[len] = '\0';
        }
#endif /* ACE_HAS_IPV6 */

      // Get the count of the number of elements
      CORBA::ULong const len = listen_point_list.length ();

      // Increase the length by 1
      listen_point_list.length (len + 1);

      // We have the connection and the acceptor endpoint on the
      // same interface
      IIOP::ListenPoint & point = listen_point_list[len];
      point.host = CORBA::string_dup (interface_name.in ());
      point.port = endpoint_addr[index].get_port_number ();

      if (TAO_debug_level >= 5)
        {
          ACE_DEBUG ((LM_DEBUG,
                      ACE_TEXT("TAO (%P|%t) - Listen_Point_List[%d] = <%C:%d>\n"),
                      len,
                      point.host.in (),
                      point.port));
        }
    }
  return 1;
}

ssize_t TAO_IIOP_Transport::recv	(	char *	buf,
		size_t	len,
		const ACE_Time_Value *	s = `0`
	)			`[protected, virtual]`

Bridge method to call a similar method on the connection handler.

Implements TAO_Transport.

Definition at line 167 of file IIOP_Transport.cpp.

{
  ssize_t const n = this->connection_handler_->peer ().recv (buf,
                                                             len,
                                                             max_wait_time);

  // Do not print the error message if it is a timeout, which could
  // occur in thread-per-connection.
  if (n == -1 && TAO_debug_level > 4 && errno != ETIME)
    {
      ACE_DEBUG ((LM_DEBUG,
                  ACE_TEXT ("TAO (%P|%t) - IIOP_Transport[%d]::recv, ")
                  ACE_TEXT ("read failure - %m errno %d\n"),
                  this->id (),
                  ACE_ERRNO_GET));
    }

  // Error handling
  if (n == -1)
    {
      if (errno == EWOULDBLOCK)
        return 0;

      return -1;
    }

  // Most of the errors handling is common for
  // Now the message has been read

  // @@ What are the other error handling here??
  else if (n == 0)
    {
      return -1;
    }

  return n;
}

ssize_t TAO_IIOP_Transport::send	(	iovec *	iov,
		int	iovcnt,
		size_t &	bytes_transferred,
		const ACE_Time_Value *	timeout = `0`
	)			`[protected, virtual]`

Bridge method to call a similar method on the connection handler.

Implements TAO_Transport.

Definition at line 61 of file IIOP_Transport.cpp.

{
  ssize_t const retval =
    this->connection_handler_->peer ().sendv (iov,
                                              iovcnt,
                                              max_wait_time);
  if (retval > 0)
    bytes_transferred = retval;
  else
    {
      if (TAO_debug_level > 4)
        {
          ACE_DEBUG ((LM_DEBUG,
                      ACE_TEXT ("TAO (%P|%t) - IIOP_Transport[%d]::send, ")
                      ACE_TEXT ("send failure (errno: %d) - %m\n"),
                      this->id (), ACE_ERRNO_GET));
        }
    }

  return retval;
}

int TAO_IIOP_Transport::send_message	(	TAO_OutputCDR &	stream,
		TAO_Stub *	stub = `0`,
		TAO_Message_Semantics	message_semantics = `TAO_TWOWAY_REQUEST`,
		ACE_Time_Value *	max_time_wait = `0`
	)			`[virtual]`

Bridge method to call a similar method on the connection handler.

Implements TAO_Transport.

Definition at line 229 of file IIOP_Transport.cpp.

{
  // Format the message in the stream first
  if (this->messaging_object ()->format_message (stream, stub) != 0)
    return -1;

  // This guarantees to send all data (bytes) or return an error.
  ssize_t const n = this->send_message_shared (stub,
                                               message_semantics,
                                               stream.begin (),
                                               max_wait_time);

  if (n == -1)
    {
      // Dont try to be smart and request for %p in the debug
      // statement.  If the event handler is destroyed the transport
      // would return -1 with errno set to ENOENT. %p then would dump
      // a core. %m would then be softer on this.
      if (TAO_debug_level)
        ACE_DEBUG ((LM_DEBUG,
                    ACE_TEXT ("TAO (%P|%t) - IIOP_Transport[%d]::send_message, ")
                    ACE_TEXT ("write failure - %m\n"),
                    this->id ()));
      return -1;
    }

  return 1;
}

int TAO_IIOP_Transport::send_request	(	TAO_Stub *	stub,
		TAO_ORB_Core *	orb_core,
		TAO_OutputCDR &	stream,
		TAO_Message_Semantics	message_semantics,
		ACE_Time_Value *	max_wait_time
	)			`[virtual]`

Todo:: These methods IMHO should have more meaningful names. The names seem to indicate nothing.

Implements TAO_Transport.

Definition at line 208 of file IIOP_Transport.cpp.

{
  if (this->ws_->sending_request (orb_core, message_semantics) == -1)
    return -1;

  if (this->send_message (stream,
                          stub,
                          message_semantics,
                          max_wait_time) == -1)
    return -1;

  this->first_request_sent();

  return 0;
}

void TAO_IIOP_Transport::set_bidir_context_info ( TAO_Operation_Details & opdetails ) [private, virtual]

Set the Bidirectional context info in the service context list.

Reimplemented from TAO_Transport.

Definition at line 282 of file IIOP_Transport.cpp.

{
  // Get a handle to the acceptor registry
  TAO_Acceptor_Registry &ar =
    this->orb_core ()->lane_resources ().acceptor_registry ();

  IIOP::ListenPointList listen_point_list;

  TAO_AcceptorSetIterator const end = ar.end ();

  for (TAO_AcceptorSetIterator acceptor = ar.begin ();
       acceptor != end;
       ++acceptor)
    {
      // Check whether it is an IIOP acceptor
      if ((*acceptor)->tag () == this->tag ())
        {
          if (this->get_listen_point (listen_point_list, *acceptor) == -1)
            {
              if (TAO_debug_level > 0)
                ACE_ERROR ((LM_ERROR,
                            "TAO (%P|%t) - IIOP_Transport::set_bidir_context_info, "
                            "error getting listen_point\n"));

              return;
            }
        }
    }

  if (listen_point_list.length () == 0)
    {
      if (TAO_debug_level > 0)
        ACE_ERROR ((LM_ERROR,
                    "TAO (%P|%t) - IIOP_Transport::set_bidir_context_info, "
                    "listen_point list is empty, client should send a list "
                    "with at least one point\n"));

      return;
    }

  // We have the ListenPointList at this point. Create a output CDR
  // stream at this point
  TAO_OutputCDR cdr;

  // Marshal the information into the stream
  if (!(cdr << ACE_OutputCDR::from_boolean (TAO_ENCAP_BYTE_ORDER))
      || (!(cdr << listen_point_list)))
    return;

  // Add this info in to the svc_list
  opdetails.request_service_context ().set_context (IOP::BI_DIR_IIOP, cdr);

  return;
}

int TAO_IIOP_Transport::tear_listen_point_list ( TAO_InputCDR & cdr ) [virtual]

Bridge method to call a similar method on the connection handler.

Reimplemented from TAO_Transport.

Definition at line 262 of file IIOP_Transport.cpp.

{
  CORBA::Boolean byte_order;
  if (!(cdr >> ACE_InputCDR::to_boolean (byte_order)))
    return -1;

  cdr.reset_byte_order (static_cast<int> (byte_order));

  IIOP::ListenPointList listen_list;
  if (!(cdr >> listen_list))
    return -1;

  // As we have received a bidirectional information, set the flag to
  // 0 (i.e., non-originating side)
  this->bidirectional_flag (0);

  return this->connection_handler_->process_listen_point_list (listen_list);
}

void TAO_IIOP_Transport::update_protocol_properties	(	int	send_buffer_size,
		int	recv_buffer_size,
		int	no_delay,
		int	enable_network_priority
	)

Bridge method to call a similar method on the connection handler.

Member Data Documentation

TAO_IIOP_Connection_Handler* TAO_IIOP_Transport::connection_handler_ [private]

The connection service handler used for accessing lower layer communication protocols.

Definition at line 135 of file IIOP_Transport.h.

The documentation for this class was generated from the following files:

TAO_IIOP_Transport Class Reference

Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Overridden Template Methods

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation