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// This may look like C, but it's really -*- C++ -*-
// $Id$
// ============================================================================
//
// = LIBRARY
// TAO
//
// = FILENAME
// IIOP_Transport.h
//
// = DESCRIPTION
// IIOP Transport specific processing
//
// = AUTHOR
// Fred Kuhns <fredk@cs.wustl.edu>
//
// ============================================================================
#ifndef TAO_IIOP_TRANSPORT_H
#define TAO_IIOP_TRANSPORT_H
#include "tao/Pluggable.h"
// Forward decls.
class TAO_IIOP_Handler_Base;
class TAO_Client_Connection_Handler;
class TAO_Server_Connection_Handler;
class TAO_ORB_Core;
class TAO_Export TAO_IIOP_Transport : public TAO_Transport
{
// = TITLE
// This class acts as a bridge class to the transport specific
// connection handler (handler_).
//
// = DESCRIPTION
// @@ Fred, please fill in here.
public:
TAO_IIOP_Transport (TAO_IIOP_Handler_Base *handler);
// Base object's creator method.
~TAO_IIOP_Transport (void);
// Default destructor.
CORBA::ULong tag (void);
// Returns the specific IOP instance, in this case IIOP.
void close_connection (void);
// Call the corresponding connection handlers handle_close method.
void resume_connection (ACE_Reactor *reactor);
// Calls the reactors resume_handler on behalf of the corresponding
// connection handler.
int idle (void);
// Idles the corresponding connection handler.
TAO_IIOP_Handler_Base *&handler (void);
// Return a reference to the corresponding connection handler.
int is_nil (TAO_Transport *obj);
// Returns 0 if the obj is 0, else 1.
TAO_Transport *_nil (void);
// Return a NULL pointer of type TAO_Transport *.
ACE_HANDLE handle (void);
// Return the underlying connection handle.
ssize_t send (const ACE_Message_Block *mblk,
ACE_Time_Value *s = 0);
// Write the contents of the Message_Block to the connection.
ssize_t send (const u_char *buf,
size_t len,
ACE_Time_Value *s = 0);
// Write the contents of the buffer of length len to the connection.
ssize_t send (const iovec *iov,
int iovcnt,
ACE_Time_Value *s = 0);
// Write the contents of iovcnt iovec's to the connection.
ssize_t recv (char *buf,
size_t len,
ACE_Time_Value *s = 0);
// Read len bytes from into buf.
ssize_t recv (char *buf,
size_t len,
int flags,
ACE_Time_Value *s = 0);
// Read len bytes from into buf using flags.
ssize_t recv (iovec *iov,
int iovcnt,
ACE_Time_Value *s = 0);
// Read received data into the iovec buffers.
// @@ Fred, why is this method defined inline? It should be defined
// in the *.cpp file!
virtual int send_request (TAO_ORB_Core * /* orb_core */,
TAO_OutputCDR & /* stream */,
int /* twoway */) { return -1; };
// Default action to be taken for send request.
protected:
TAO_IIOP_Handler_Base *handler_;
// the connection service handler used for accessing lower layer
// communication protocols.
CORBA::ULong tag_;
// IIOP tag.
};
class TAO_Export TAO_IIOP_Client_Transport : public TAO_IIOP_Transport
{
// = TITLE
// The Transport class used for Client side communication with a
// server.
//
// = DESCRIPTION
// @@ Fred, please fill in here.
public:
TAO_IIOP_Client_Transport (TAO_Client_Connection_Handler *handler);
// Constructor. Note, TAO_IIOP_Handler_Base is the base class for
// both TAO_Client_Connection_Handler and
// TAO_Server_Connection_Handler.
~TAO_IIOP_Client_Transport (void);
// destructor
TAO_Client_Connection_Handler *client_handler (void);
// return a pointer to the client's connection handler.
int send_request (TAO_ORB_Core *orb_core,
TAO_OutputCDR &stream,
int twoway);
// This is a bridge method for the connection handlers
// <send_request> method. The connection handler is responsible for
// concurrency strategies, typically using the leader-follower
// pattern.
private:
TAO_Client_Connection_Handler *client_handler_;
// pointer to the corresponding client side connection handler.
};
class TAO_Export TAO_IIOP_Server_Transport : public TAO_IIOP_Transport
{
// = TITLE
// The Transport class used for server communication with a
// connected client.
//
// = DESCRIPTION
// @@ Fred, please fill in here.
public:
TAO_IIOP_Server_Transport (TAO_Server_Connection_Handler *handler);
// Default creator method.
~TAO_IIOP_Server_Transport (void);
// Default destructor
TAO_Server_Connection_Handler *server_handler (void);
// Return a pointer to the underlying connection handler.
// virtual int send_response (TAO_OutputCDR &response);
// @@ Fred, should this method be removed?
private:
TAO_Server_Connection_Handler *server_handler_;
// Pointer to the corresponding connection handler.
};
#endif /* TAO_IIOP_TRANSPORT_H */
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