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// -*- C++ -*-
//=============================================================================
/**
* @file Transport_Mux_Strategy.h
*
* $Id$
*
* @author Alexander Babu Arulanthu <alex@cs.wustl.edu>
*/
//=============================================================================
#ifndef TAO_TRANSPORT_MUX_STRATEGY_H
#define TAO_TRANSPORT_MUX_STRATEGY_H
#include /**/ "ace/pre.h"
#include /**/ "tao/TAO_Export.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "tao/Basic_Types.h"
#include "tao/Reply_Dispatcher.h"
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
class TAO_Transport;
class TAO_Pluggable_Reply_Params;
/**
* @class TAO_Transport_Mux_Strategy
*
* @brief Strategy to determine whether the connection should be
* multiplexed for multiple requests or it is exclusive for a
* single request at a time.
*
*/
class TAO_Export TAO_Transport_Mux_Strategy
{
public:
/// Base class constructor.
TAO_Transport_Mux_Strategy (TAO_Transport *transport);
/// Base class destructor.
virtual ~TAO_Transport_Mux_Strategy (void);
/// Generate and return an unique request id for the current
/// invocation.
virtual CORBA::ULong request_id (void) = 0;
/// Bind the dispatcher with the request id. Commonalities in the
/// derived class implementations is kept here.
virtual int bind_dispatcher (CORBA::ULong request_id,
ACE_Intrusive_Auto_Ptr<TAO_Reply_Dispatcher> rd) = 0;
/**
* Unbind the dispatcher, the client is no longer waiting for the
* request, for example, because the request timedout.
* The strategy can (must) cleanup any resources associated with the
* request.
* A later reply for that request should be ignored.
*/
virtual int unbind_dispatcher (CORBA::ULong request_id) = 0;
/**
* Dispatch a reply timeout for request @a request_id
**/
virtual int reply_timed_out (CORBA::ULong request_id) = 0;
/// Dispatch the reply for request_id, cleanup any resources
/// allocated for that request.
virtual int dispatch_reply (TAO_Pluggable_Reply_Params ¶ms) = 0;
/// Request has been just sent, but the reply is not received. Idle
/// the transport now. The return value indicates whether idling was
/// successful or not.
virtual bool idle_after_send (void) = 0;
/// Request is sent and the reply is received. Idle the transport
/// now. The return value indicates whether idling was successful or
/// not.
virtual bool idle_after_reply (void) = 0;
/// The transport object has closed the connection, inform all Reply
/// dispatchers and waiting strategies.
virtual void connection_closed (void) = 0;
/// Do we have a request pending
virtual bool has_request (void) = 0;
protected:
/// Cache the transport reference.
TAO_Transport *transport_;
};
TAO_END_VERSIONED_NAMESPACE_DECL
#include /**/ "ace/post.h"
#endif /* TRANSPORT_MUX_STRATEGY_H */
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