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// This may look like C, but it's really -*- C++ -*-
// $Id$
// ============================================================================
//
// = LIBRARY
// TAO
//
// = FILENAME
// UIOP_Transport.h
//
// = DESCRIPTION
// UIOP Transport specific processing
//
// = AUTHOR
// Fred Kuhns <fredk@cs.wustl.edu>
// Ossama Othman <othman@cs.wustl.edu>
//
// ============================================================================
#ifndef TAO_UIOP_TRANSPORT_H
#define TAO_UIOP_TRANSPORT_H
#include "ace/pre.h"
#include "tao/Pluggable.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "strategies_export.h"
# if TAO_HAS_UIOP == 1
#include "ace/LSOCK_Acceptor.h"
#include "tao/GIOP_Message_State.h"
#include "ace/Synch.h"
#include "ace/Svc_Handler.h"
// Forward decls.
class TAO_UIOP_Client_Connection_Handler;
class TAO_UIOP_Server_Connection_Handler;
class TAO_ORB_Core;
typedef ACE_Svc_Handler<ACE_LSOCK_STREAM, ACE_NULL_SYNCH>
TAO_UIOP_SVC_HANDLER;
class TAO_Strategies_Export TAO_UIOP_Transport : public TAO_Transport
{
// = TITLE
// This class acts as a bridge class to the transport specific
// connection handler (handler_).
//
// = DESCRIPTION
// Specialization of the base TAO_Transport class to handle the UIOP
// protocol. This class in turn will be further specialized for
// the client and server side.
public:
TAO_UIOP_Transport (TAO_ORB_Core *orb_core);
// Base object's creator method.
~TAO_UIOP_Transport (void);
// Default destructor.
// = The TAO_Transport methods, please check the documentation in
// "tao/Pluggable.h" for more details.
virtual ACE_HANDLE handle (void);
virtual ACE_Event_Handler *event_handler (void);
virtual ssize_t send (TAO_Stub *stub,
int two_way,
const ACE_Message_Block *mblk,
const ACE_Time_Value *s = 0);
virtual ssize_t send (const ACE_Message_Block *mblk,
const ACE_Time_Value *s = 0,
size_t *bytes_transferred = 0);
virtual ssize_t send (const u_char *buf,
size_t len,
const ACE_Time_Value *s = 0);
virtual ssize_t recv (char *buf,
size_t len,
const ACE_Time_Value *s = 0);
virtual int send_request (TAO_Stub *stub,
TAO_ORB_Core *orb_core ,
TAO_OutputCDR &stream,
int twoway,
ACE_Time_Value *max_wait_time);
virtual CORBA::Boolean
send_request_header (TAO_Operation_Details &opdetails,
TAO_Target_Specification &spec,
TAO_OutputCDR &msg);
virtual TAO_UIOP_SVC_HANDLER *service_handler (void) = 0;
// Acces the underlying connection handler
};
class TAO_Strategies_Export TAO_UIOP_Client_Transport : public TAO_UIOP_Transport
{
// = TITLE
// The Transport class used for Client side communication with a
// server.
//
// = DESCRIPTION
// Specialization of the TAO_UIOP_Transport class for client
// side. Methods related to sending one and two way requests
// lives here.
public:
TAO_UIOP_Client_Transport (TAO_UIOP_Client_Connection_Handler *handler,
TAO_ORB_Core *orb_core);
// Constructor. Note, TAO_UIOP_Handler_Base is the base class for
// both TAO_UIOP_Client_Connection_Handler and
// TAO_UIOP_Server_Connection_Handler.
~TAO_UIOP_Client_Transport (void);
// destructor
// = The TAO_Transport methods, please check the documentation in
// "tao/Pluggable.h" for more details.
virtual void close_connection (void);
virtual int idle (void);
virtual void start_request (TAO_ORB_Core *orb_core,
TAO_Target_Specification &spec,
TAO_OutputCDR &output,
CORBA::Environment &ACE_TRY_ENV = TAO_default_environment ())
ACE_THROW_SPEC ((CORBA::SystemException));
virtual void start_locate (TAO_ORB_Core *orb_core,
TAO_Target_Specification &spec,
TAO_Operation_Details &opdetails,
TAO_OutputCDR &output,
CORBA::Environment &ACE_TRY_ENV = TAO_default_environment ())
ACE_THROW_SPEC ((CORBA::SystemException));
virtual int send_request (TAO_Stub *stub,
TAO_ORB_Core *orb_core,
TAO_OutputCDR &stream,
int twoway,
ACE_Time_Value *max_wait_time);
virtual int handle_client_input (int block = 0,
ACE_Time_Value *max_time_value = 0);
virtual int register_handler (void);
// Register the handler with the reactor. This will be called by the
// Wait Strategy if Reactor is used for that strategy.
TAO_UIOP_SVC_HANDLER *service_handler (void);
// Access the underlying connection handler
virtual CORBA::Boolean
send_request_header (TAO_Operation_Details &opdetail,
TAO_Target_Specification &spec,
TAO_OutputCDR &msg);
int messaging_init (CORBA::Octet major,
CORBA::Octet minor);
// Initialising the messaging object
void use_lite (CORBA::Boolean flag);
// Set the lite flag
private:
TAO_UIOP_Client_Connection_Handler *handler_;
// The connection service handler used for accessing lower layer
// communication protocols.
TAO_Pluggable_Messaging *client_mesg_factory_;
// The message_factor instance specific for this particular
// transport protocol.
TAO_ORB_Core *orb_core_;
// Our orb Core
CORBA::Boolean lite_flag_;
// We using GIOP lite?
TAO_Pluggable_Reply_Params params_;
// The reply data that is sent back by the server
};
// ****************************************************************
class TAO_Strategies_Export TAO_UIOP_Server_Transport : public TAO_UIOP_Transport
{
// = TITLE
// The Transport class used for server communication with a
// connected client.
//
// = DESCRIPTION
// Specialization of the TAO_UIOP_Transport class for the server side.
// methods for reading messages (requests) and sending replies live
// here.
public:
TAO_UIOP_Server_Transport (TAO_UIOP_Server_Connection_Handler *handler,
TAO_ORB_Core* orb_core);
// Default creator method.
~TAO_UIOP_Server_Transport (void);
// Default destructor
// See Pluggable.h for documentation
virtual void close_connection (void);
virtual int idle (void);
TAO_UIOP_SVC_HANDLER *service_handler (void);
// Access the underlying connection handler
TAO_GIOP_Message_State message_state_;
// This keep the state of the current message, to enable
// non-blocking reads, fragment reassembly, etc.
private:
TAO_UIOP_Server_Connection_Handler *handler_;
// the connection service handler used for accessing lower layer
// communication protocols.
};
#if defined (__ACE_INLINE__)
#include "UIOP_Transport.i"
#endif /* __ACE_INLINE__ */
# endif /* TAO_HAS_UIOP == 1 */
#include "ace/post.h"
#endif /* TAO_UIOP_TRANSPORT_H */
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