TAO_SCIOP_Transport Class Reference

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

#include <SCIOP_Transport.h>

Inheritance diagram for TAO_SCIOP_Transport:

[legend]Collaboration diagram for TAO_SCIOP_Transport:

[legend]List of all members.

Overridden Template Methods
Please check the documentation in "tao/Transport.h" for more details.
virtual int	send_request (TAO_Stub *stub, TAO_ORB_Core *orb_core, TAO_OutputCDR &association, int message_semantics, ACE_Time_Value *max_wait_time)
virtual int	send_message (TAO_OutputCDR &association, TAO_Stub *stub=0, int message_semantics=TAO_Transport::TAO_TWOWAY_REQUEST, ACE_Time_Value *max_time_wait=0)
virtual int	generate_request_header (TAO_Operation_Details &opdetails, TAO_Target_Specification &spec, TAO_OutputCDR &msg)
virtual int	messaging_init (CORBA::Octet major, CORBA::Octet minor)
virtual int	tear_listen_point_list (TAO_InputCDR &cdr)
virtual TAO_Connection_Handler *	connection_handler_i (void)
virtual ACE_Event_Handler *	event_handler_i (void)
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)
virtual ssize_t	recv (char *buf, size_t len, const ACE_Time_Value *s=0)
virtual int	send_message_shared (TAO_Stub *stub, int message_semantics, const ACE_Message_Block *message_block, ACE_Time_Value *max_wait_time)
Public Member Functions
	TAO_SCIOP_Transport (TAO_SCIOP_Connection_Handler *handler, TAO_ORB_Core *orb_core, CORBA::Boolean flag)
	Constructor.
Protected Member Functions
virtual	~TAO_SCIOP_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_SCIOP_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 SCIOP protocol.

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

Definition at line 48 of file SCIOP_Transport.h.

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Constructor & Destructor Documentation

TAO_BEGIN_VERSIONED_NAMESPACE_DECL TAO_SCIOP_Transport::TAO_SCIOP_Transport (  TAO_SCIOP_Connection_Handler *  handler, TAO_ORB_Core *  orb_core, CORBA::Boolean  flag )

Constructor. Definition at line 30 of file SCIOP_Transport.cpp. References ACE_NEW, and TAO_TAG_SCIOP_PROFILE. : TAO_Transport (TAO_TAG_SCIOP_PROFILE, orb_core) , connection_handler_ (handler) , messaging_object_ (0) { #if 0 // First step in deprecating this. if (flag) { // Use the lite version of the protocol ACE_NEW (this->messaging_object_, TAO_GIOP_Message_Lite (orb_core)); } else #endif /*if 0*/ { // Use the normal GIOP object ACE_NEW (this->messaging_object_, TAO_GIOP_Message_Base (orb_core, this)); } }

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

Destructor. Protected destructor to enforce proper memory management through the reference counting mechanism. Definition at line 55 of file SCIOP_Transport.cpp. { delete this->messaging_object_; }

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Member Function Documentation

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

Todo: These methods IMHO should have more meaningful names. The names seem to indicate nothing. Implements TAO_Transport. Definition at line 67 of file SCIOP_Transport.cpp. { return this->connection_handler_; }

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

Todo: These methods IMHO should have more meaningful names. The names seem to indicate nothing. Implements TAO_Transport. Definition at line 61 of file SCIOP_Transport.cpp. { return this->connection_handler_; }

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

Todo: These methods IMHO should have more meaningful names. The names seem to indicate nothing. Reimplemented from TAO_Transport. Definition at line 210 of file SCIOP_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(), TAO_Transport::orb_core(), TAO_Operation_Details::request_id(), and set_bidir_context_info(). { // Check whether we have a Bi Dir SCIOP 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_SCIOP_Transport::get_listen_point (  IIOP::ListenPointList &  listen_point_list, TAO_Acceptor *  acceptor )  [private]

Add the listen points in to the if this connection is in the same interface as that of the endpoints in the Definition at line 317 of file SCIOP_Transport.cpp. References ACE_ERROR_RETURN, ACE_TEXT, TAO_SCIOP_Acceptor::endpoint_count(), TAO_SCIOP_Acceptor::endpoints(), ACE_INET_Addr::get_ip_address(), ACE_INET_Addr::get_port_number(), IIOP::ListenPoint::host, TAO_SCIOP_Acceptor::hostname(), TAO::unbounded_value_sequence< ListenPoint >::length(), LM_ERROR, IIOP::ListenPoint::port, and CORBA::string_dup(). Referenced by set_bidir_context_info(). { TAO_SCIOP_Acceptor *sciop_acceptor = dynamic_cast<TAO_SCIOP_Acceptor *> (acceptor ); // Get the array of endpoints serviced by TAO_SCIOP_Acceptor const ACE_INET_Addr *endpoint_addr = sciop_acceptor->endpoints (); // Get the endpoint count size_t count = sciop_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 ("(%P|%t) Could not resolve local ") ACE_TEXT ("host address in ") ACE_TEXT ("get_listen_point()\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 (sciop_acceptor->hostname (this->orb_core_, local_addr, local_interface.out ()) == -1) { ACE_ERROR_RETURN ((LM_ERROR, ACE_TEXT ("(%P|%t) Could not resolve local host") ACE_TEXT (" name \n")), -1); } for (size_t index = 0; index != count; index++) { if (local_addr.get_ip_address() == endpoint_addr[index].get_ip_address()) { // Get the count of the number of elements 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 (); } } return 1; }

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

Todo: These methods IMHO should have more meaningful names. The names seem to indicate nothing. Implements TAO_Transport. Definition at line 241 of file SCIOP_Transport.cpp. References TAO_Pluggable_Messaging::init(). { this->messaging_object_->init (major, minor); return 1; }

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

Access the underlying messaging object. Implements TAO_Transport. Definition at line 73 of file SCIOP_Transport.cpp. { return this->messaging_object_; }

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

Todo: These methods IMHO should have more meaningful names. The names seem to indicate nothing. Implements TAO_Transport. Definition at line 92 of file SCIOP_Transport.cpp. References ACE_DEBUG, ACE_TEXT, ETIME, EWOULDBLOCK, LM_DEBUG, ssize_t, and TAO_debug_level. { ssize_t 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) - SCIOP_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_SCIOP_Transport::send (  iovec *  iov, int  iovcnt, size_t &  bytes_transferred, const ACE_Time_Value *  timeout = 0 )  [protected, virtual]

Todo: These methods IMHO should have more meaningful names. The names seem to indicate nothing. Implements TAO_Transport. Definition at line 79 of file SCIOP_Transport.cpp. References ssize_t. { ssize_t retval = this->connection_handler_->peer ().sendv (iov, iovcnt, max_wait_time); if (retval > 0) bytes_transferred = retval; return retval; }

int TAO_SCIOP_Transport::send_message (  TAO_OutputCDR &  association, TAO_Stub *  stub = 0, int  message_semantics = TAO_Transport::TAO_TWOWAY_REQUEST, ACE_Time_Value *  max_time_wait = 0 )  [virtual]

Todo: These methods IMHO should have more meaningful names. The names seem to indicate nothing. Implements TAO_Transport. Definition at line 158 of file SCIOP_Transport.cpp. References ACE_DEBUG, ACE_TEXT, ACE_OutputCDR::begin(), TAO_Pluggable_Messaging::format_message(), LM_DEBUG, 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 n = this->send_message_shared (stub, message_semantics, stream.begin (), max_wait_time); if (n == -1) { if (TAO_debug_level) ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("TAO (%P|%t) - SCIOP_Transport[%d]::send_message, ") ACE_TEXT (" write failure - %m\n"), this->id ())); return -1; } return 1; }

int TAO_SCIOP_Transport::send_message_shared (  TAO_Stub *  stub, int  message_semantics, const ACE_Message_Block *  message_block, ACE_Time_Value *  max_wait_time )  [protected, virtual]

Todo: These methods IMHO should have more meaningful names. The names seem to indicate nothing. Reimplemented from TAO_Transport. Definition at line 187 of file SCIOP_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_SCIOP_Transport::send_request (  TAO_Stub *  stub, TAO_ORB_Core *  orb_core, TAO_OutputCDR &  association, 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 135 of file SCIOP_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_SCIOP_Transport::set_bidir_context_info (  TAO_Operation_Details &  opdetails  )  [private]

Set the Bidirectional context info in the service context list. Definition at line 270 of file SCIOP_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(), LM_ERROR, TAO_Transport::orb_core(), TAO_Operation_Details::request_service_context(), TAO_Service_Context::set_context(), TAO_AcceptorSetIterator, TAO_ENCAP_BYTE_ORDER, and TAO_TAG_SCIOP_PROFILE. Referenced by generate_request_header(). { // Get a handle to the acceptor registry TAO_Acceptor_Registry &ar = this->orb_core ()->lane_resources ().acceptor_registry (); // Get the first acceptor in the registry TAO_AcceptorSetIterator acceptor = ar.begin (); IIOP::ListenPointList listen_point_list; for (; acceptor != ar.end (); acceptor++) { // Check whether it is a SCIOP acceptor if ((*acceptor)->tag () == TAO_TAG_SCIOP_PROFILE) { if (this->get_listen_point (listen_point_list, *acceptor) == -1) { ACE_ERROR ((LM_ERROR, "TAO (%P|%t) - SCIOP_Transport::set_bidir_info, " "error getting listen_point \n")); return; } } } // We have the ListenPointList at this point. Create a output CDR // stream at this point TAO_OutputCDR cdr; // Marshall 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_SCIOP_Transport::tear_listen_point_list (  TAO_InputCDR &  cdr  )  [virtual]

Todo: These methods IMHO should have more meaningful names. The names seem to indicate nothing. Reimplemented from TAO_Transport. Definition at line 250 of file SCIOP_Transport.cpp. References TAO_Transport::bidirectional_flag(), TAO_SCIOP_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 // 1 (i.e., non-originating side) this->bidirectional_flag (0); return this->connection_handler_->process_listen_point_list (listen_list); }

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Member Data Documentation

TAO_SCIOP_Connection_Handler* TAO_SCIOP_Transport::connection_handler_ [private]

The connection service handler used for accessing lower layer communication protocols. Definition at line 136 of file SCIOP_Transport.h.

TAO_Pluggable_Messaging* TAO_SCIOP_Transport::messaging_object_ [private]

Our messaging object. Definition at line 139 of file SCIOP_Transport.h.

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

• SCIOP_Transport.h
• SCIOP_Transport.cpp

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