TAO_IIOP_Transport Class Reference

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

#include <IIOP_Transport.h>

Inheritance diagram for TAO_IIOP_Transport:

[legend]Collaboration diagram for TAO_IIOP_Transport:

[legend]List of all members.

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, int message_semantics, ACE_Time_Value *max_wait_time)
virtual int	send_message (TAO_OutputCDR &stream, TAO_Stub *stub=0, int message_semantics=TAO_Transport::TAO_TWOWAY_REQUEST, ACE_Time_Value *max_time_wait=0)
	Bridge method to call a similar method on the connection handler.
virtual int	generate_request_header (TAO_Operation_Details &opdetails, TAO_Target_Specification &spec, TAO_OutputCDR &msg)
	Bridge method to call a similar method on the connection handler.
virtual int	messaging_init (CORBA::Octet major, CORBA::Octet minor)
	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 TAO_Pluggable_Messaging *	messaging_object (void)
	Access the underlying messaging object.
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.
virtual int	send_message_shared (TAO_Stub *stub, int message_semantics, const ACE_Message_Block *message_block, ACE_Time_Value *max_wait_time)
	Bridge method to call a similar method on the connection handler.
Public Member Functions
	TAO_IIOP_Transport (TAO_IIOP_Connection_Handler *handler, TAO_ORB_Core *orb_core, CORBA::Boolean flag)
	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_
TAO_Pluggable_Messaging *	messaging_object_
	Our messaging object.

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Detailed Description

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

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

Definition at line 53 of file IIOP_Transport.h.

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Constructor & Destructor Documentation

TAO_BEGIN_VERSIONED_NAMESPACE_DECL TAO_IIOP_Transport::TAO_IIOP_Transport (  TAO_IIOP_Connection_Handler *  handler, TAO_ORB_Core *  orb_core, CORBA::Boolean  flag )

Constructor. Definition at line 26 of file IIOP_Transport.cpp. References ACE_NEW. : TAO_Transport (IOP::TAG_INTERNET_IOP, orb_core) , connection_handler_ (handler) , messaging_object_ (0) { // Use the normal GIOP object ACE_NEW (this->messaging_object_, TAO_GIOP_Message_Base (orb_core, this)); }

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 39 of file IIOP_Transport.cpp. References messaging_object_. { delete this->messaging_object_; }

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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 61 of file IIOP_Transport.cpp. References connection_handler_. { 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 55 of file IIOP_Transport.cpp. References connection_handler_. { return this->connection_handler_; }

int TAO_IIOP_Transport::generate_request_header (  TAO_Operation_Details &  opdetails, TAO_Target_Specification &  spec, TAO_OutputCDR &  msg )  [virtual]

Bridge method to call a similar method on the connection handler. Reimplemented from TAO_Transport. Definition at line 302 of file IIOP_Transport.cpp. References TAO_ORB_Core::bidir_giop_policy(), TAO_Transport::bidirectional_flag(), TAO_Transport::generate_request_header(), TAO_Pluggable_Messaging::is_ready_for_bidirectional(), messaging_object_, TAO_Transport::orb_core(), TAO_Operation_Details::request_id(), and set_bidir_context_info(). { // Check whether we have a Bi Dir IIOP policy set, whether the // messaging objects are ready to handle bidirectional connections // and also make sure that we have not recd. or sent any information // regarding this before... if (this->orb_core ()->bidir_giop_policy () && this->messaging_object_->is_ready_for_bidirectional (msg) && this->bidirectional_flag () < 0) { this->set_bidir_context_info (opdetails); // Set the flag to 1 (i.e., originating side) this->bidirectional_flag (1); // At the moment we enable BiDIR giop we have to get a new // request id to make sure that we follow the even/odd rule // for request id's. We only need to do this when enabled // it, after that the Transport Mux Strategy will make sure // that the rule is followed opdetails.request_id (this->tms ()->request_id ()); } return TAO_Transport::generate_request_header (opdetails, spec, msg); }

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 419 of file IIOP_Transport.cpp. References ACE_DEBUG, ACE_ERROR_RETURN, ACE_TEXT, connection_handler_, TAO_IIOP_Acceptor::endpoint_count(), TAO_IIOP_Acceptor::endpoints(), ACE_Addr::get_type(), IIOP::ListenPoint::host, TAO_IIOP_Acceptor::hostname(), TAO::String_var< charT >::in(), TAO::unbounded_value_sequence< ListenPoint >::length(), LM_DEBUG, LM_ERROR, TAO::String_var< charT >::out(), IIOP::ListenPoint::port, ACE_INET_Addr::set_port_number(), ACE_OS::strchr(), CORBA::string_dup(), CORBA::String_var, and TAO_debug_level. Referenced by set_bidir_context_info(). { 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 (); // Get the endpoint count size_t const count = iiop_acceptor->endpoint_count (); // Get the local address of the connection 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); } // 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. CORBA::String_var local_interface; // Get the hostname for the local address if (iiop_acceptor->hostname (this->orb_core_, local_addr, local_interface.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 (local_addr.get_type () == PF_INET6 && (cp_scope = ACE_OS::strchr (local_interface.in (), '%')) != 0) { CORBA::ULong len = cp_scope - local_interface.in (); local_interface[len] = '\0'; } #endif /* ACE_HAS_IPV6 */ for (size_t index = 0; index < count; ++index) { // 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]) { // Get the count of the number of elements const CORBA::ULong 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 (local_interface.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] = <%s:%d>\n"), len, point.host.in (), point.port)); } } } return 1; }

int TAO_IIOP_Transport::messaging_init (  CORBA::Octet  major, CORBA::Octet  minor )  [virtual]

Bridge method to call a similar method on the connection handler. Implements TAO_Transport. Definition at line 333 of file IIOP_Transport.cpp. References TAO_Pluggable_Messaging::init(), and messaging_object_. { this->messaging_object_->init (major, minor); return 1; }

TAO_Pluggable_Messaging * TAO_IIOP_Transport::messaging_object (  void   )  [protected, virtual]

Access the underlying messaging object. Implements TAO_Transport. Definition at line 67 of file IIOP_Transport.cpp. References messaging_object_. { return this->messaging_object_; }

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 179 of file IIOP_Transport.cpp. References ACE_DEBUG, ACE_TEXT, connection_handler_, ETIME, EWOULDBLOCK, LM_DEBUG, ssize_t, and TAO_debug_level. { 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\n"), this->id ())); } // 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 73 of file IIOP_Transport.cpp. References ACE_DEBUG, ACE_TEXT, connection_handler_, LM_DEBUG, ssize_t, and TAO_debug_level. { 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 - %m (errno: %d)\n"), this->id (), errno)); } } return retval; }

int TAO_IIOP_Transport::send_message (  TAO_OutputCDR &  stream, TAO_Stub *  stub = 0, int  message_semantics = TAO_Transport::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 245 of file IIOP_Transport.cpp. References ACE_DEBUG, ACE_TEXT, ACE_OutputCDR::begin(), TAO_Pluggable_Messaging::format_message(), LM_DEBUG, messaging_object_, send_message_shared(), ssize_t, and TAO_debug_level. Referenced by send_request(). { // Format the message in the stream first if (this->messaging_object_->format_message (stream) != 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_message_shared (  TAO_Stub *  stub, int  message_semantics, const ACE_Message_Block *  message_block, ACE_Time_Value *  max_wait_time )  [protected, virtual]

Bridge method to call a similar method on the connection handler. Reimplemented from TAO_Transport. Definition at line 278 of file IIOP_Transport.cpp. References ACE_GUARD_RETURN, TAO_Transport::close_connection(), and TAO_Transport::send_message_shared_i(). Referenced by send_message(). { int r; { ACE_GUARD_RETURN (ACE_Lock, ace_mon, *this->handler_lock_, -1); r = this->send_message_shared_i (stub, message_semantics, message_block, max_wait_time); } if (r == -1) { this->close_connection (); } return r; }

int TAO_IIOP_Transport::send_request (  TAO_Stub *  stub, TAO_ORB_Core *  orb_core, TAO_OutputCDR &  stream, int  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 222 of file IIOP_Transport.cpp. References TAO_Transport::first_request_sent(), send_message(), and TAO_Wait_Strategy::sending_request(). { 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]

Set the Bidirectional context info in the service context list. Definition at line 362 of file IIOP_Transport.cpp. References TAO_Thread_Lane_Resources::acceptor_registry(), ACE_ERROR, TAO_Acceptor_Registry::begin(), TAO_Acceptor_Registry::end(), get_listen_point(), TAO_ORB_Core::lane_resources(), TAO::unbounded_value_sequence< ListenPoint >::length(), LM_ERROR, TAO_Transport::orb_core(), TAO_Operation_Details::request_service_context(), TAO_Service_Context::set_context(), TAO_AcceptorSetIterator, TAO_debug_level, and TAO_ENCAP_BYTE_ORDER. Referenced by generate_request_header(). { // Get a handle to the acceptor registry TAO_Acceptor_Registry &ar = this->orb_core ()->lane_resources ().acceptor_registry (); IIOP::ListenPointList listen_point_list; const TAO_AcceptorSetIterator end = ar.end (); for (TAO_AcceptorSetIterator acceptor = ar.begin (); acceptor != end; ++acceptor) { // Check whether it is an IIOP acceptor if ((*acceptor)->tag () == IOP::TAG_INTERNET_IOP) { 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) == 0) || (cdr << listen_point_list) == 0) 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 342 of file IIOP_Transport.cpp. References TAO_Transport::bidirectional_flag(), connection_handler_, TAO_IIOP_Connection_Handler::process_listen_point_list(), and ACE_InputCDR::reset_byte_order(). { CORBA::Boolean byte_order; if ((cdr >> ACE_InputCDR::to_boolean (byte_order)) == 0) return -1; cdr.reset_byte_order (static_cast<int> (byte_order)); IIOP::ListenPointList listen_list; if ((cdr >> listen_list) == 0) 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.

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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 154 of file IIOP_Transport.h. Referenced by connection_handler_i(), event_handler_i(), get_listen_point(), recv(), send(), and tear_listen_point_list().

TAO_Pluggable_Messaging* TAO_IIOP_Transport::messaging_object_ [private]

Our messaging object. Definition at line 157 of file IIOP_Transport.h. Referenced by generate_request_header(), messaging_init(), messaging_object(), send_message(), and ~TAO_IIOP_Transport().

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

• IIOP_Transport.h
• IIOP_Transport.cpp

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