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/* -*- C++ -*- */
// $Id$
// ============================================================================
//
// = LIBRARY
// ORBSVCS AVStreams
//
// = FILENAME
// Transport.h
//
// = AUTHOR
// Nagarajan Surendran <naga@cs.wustl.edu>
//
//
// ============================================================================
#if !defined TAO_AV_TRANSPORT_H
#define TAO_AV_TRANSPORT_H
#include "ace/Acceptor.h"
#include "ace/SOCK_Acceptor.h"
#include "ace/Connector.h"
#include "ace/SOCK_Connector.h"
#include "ace/Addr.h"
#include "ace/SOCK_Dgram.h"
#include "orbsvcs/AV/AV_export.h"
#include "AV_Core.h"
#include "FlowSpec_Entry.h"
// Forward declarations.
class TAO_AV_Protocol_Object;
class TAO_AV_Callback;
class TAO_AV_Transport;
class TAO_AV_Flow_Handler
{
public:
TAO_AV_Flow_Handler (void);
// Constructor.
virtual int start (TAO_FlowSpec_Entry::Role role);
virtual int stop (TAO_FlowSpec_Entry::Role role);
// Start/stop the flow handler.
virtual int schedule_timer (void);
// Schedule timer. Uses the get_timeout method on the callback.
TAO_AV_Transport *transport (void);
// get the transport.
TAO_AV_Protocol_Object* protocol_object (void);
void protocol_object (TAO_AV_Protocol_Object *protocol_object);
// set/get protocol_object.
void callback (TAO_AV_Callback *callback);
// set the callback.
int handle_timeout (const ACE_Time_Value &tv, const void *arg = 0);
// Handle timeout. called from reactor.
virtual int set_remote_address (ACE_Addr *address);
// set the remote address.
virtual ACE_Event_Handler* event_handler (void) = 0;
// get the underlying event handler. To be overridden by the derived clases.
protected:
TAO_AV_Transport *transport_;
TAO_AV_Callback *callback_;
TAO_AV_Protocol_Object *protocol_object_;
long timer_id_;
ACE_Reactor *reactor_;
void *timeout_arg_;
};
// Transports
class TAO_AV_Export TAO_AV_Transport
{
// TITLE
// = A Base class for the different transport protocols.
//
// DESCRIPTION
// = All the different transports should derive and implement
// the open,close,send and recv methods.
public:
TAO_AV_Transport (void);
virtual ~TAO_AV_Transport (void);
virtual int open (ACE_Addr *address) = 0;
virtual int close (void) = 0;
virtual int mtu (void) = 0;
virtual ACE_Addr *get_peer_addr (void) = 0;
virtual ACE_Addr *get_local_addr (void);
virtual ssize_t send (const ACE_Message_Block *mblk,
ACE_Time_Value *s = 0) = 0;
// Write the complete Message_Block chain to the connection.
virtual ssize_t send (const char *buf,
size_t len,
ACE_Time_Value *s = 0) = 0;
// Write the contents of the buffer of length len to the connection.
virtual ssize_t send (const iovec *iov,
int iovcnt,
ACE_Time_Value *s = 0) = 0;
// Write the contents of iovcnt iovec's to the connection.
virtual ssize_t recv (char *buf,
size_t len,
ACE_Time_Value *s = 0) = 0;
// Read len bytes from into buf.
virtual ssize_t recv (char *buf,
size_t len,
int flags,
ACE_Time_Value *s = 0) = 0;
// Read len bytes from into buf using flags.
virtual ssize_t recv (iovec *iov,
int iovcnt,
ACE_Time_Value *s = 0) = 0;
// Read received data into the iovec buffers.
};
class TAO_Base_StreamEndPoint;
class TAO_AV_Core;
class TAO_FlowSpec_Entry;
class TAO_AV_Acceptor
{
public:
TAO_AV_Acceptor (void);
virtual ~TAO_AV_Acceptor (void);
virtual int open (TAO_Base_StreamEndPoint *endpoint,
TAO_AV_Core *av_core,
TAO_FlowSpec_Entry *entry,
TAO_AV_Flow_Protocol_Factory *factory) = 0;
virtual int open_default (TAO_Base_StreamEndPoint *endpoint,
TAO_AV_Core *av_core,
TAO_FlowSpec_Entry *entry,
TAO_AV_Flow_Protocol_Factory *factory) = 0;
const char *flowname ();
virtual int close (void) = 0;
protected:
ACE_CString flowname_;
TAO_AV_Core *av_core_;
ACE_Addr *address_;
};
class TAO_AV_Connector
{
public:
TAO_AV_Connector (void);
virtual ~TAO_AV_Connector (void);
const char *flowname (void);
virtual int open (TAO_Base_StreamEndPoint *endpoint,
TAO_AV_Core *av_core,
TAO_AV_Flow_Protocol_Factory *factory) = 0;
virtual int connect (TAO_FlowSpec_Entry *entry,
TAO_AV_Transport *&transport) = 0;
virtual int close (void) = 0;
protected:
ACE_CString flowname_;
};
typedef ACE_Unbounded_Set<TAO_AV_Connector*> TAO_AV_ConnectorSet;
typedef ACE_Unbounded_Set_Iterator<TAO_AV_Connector*> TAO_AV_ConnectorSetItor;
class TAO_AV_Export TAO_AV_Connector_Registry
{
public:
TAO_AV_Connector_Registry (void);
~TAO_AV_Connector_Registry (void);
int open (TAO_Base_StreamEndPoint *endpoint,
TAO_AV_Core *av_core,
TAO_AV_FlowSpecSet &flow_spec_set);
// int connect (TAO_FlowSpec_Entry *flowspec,
// TAO_AV_Transport *&transport);
int close_all (void);
// TAO_AV_Connector *get_connector (TAO_AV_Core::Protocol protocol);
// Return the connector bridges
TAO_AV_ConnectorSetItor begin (void);
TAO_AV_ConnectorSetItor end (void);
protected:
TAO_AV_ConnectorSet connectors_;
};
typedef ACE_Unbounded_Set<TAO_AV_Acceptor*>
TAO_AV_AcceptorSet;
typedef ACE_Unbounded_Set_Iterator<TAO_AV_Acceptor*>
TAO_AV_AcceptorSetItor;
class TAO_AV_Export TAO_AV_Acceptor_Registry
{
public:
TAO_AV_Acceptor_Registry (void);
~TAO_AV_Acceptor_Registry (void);
int open (TAO_Base_StreamEndPoint *endpoint,
TAO_AV_Core *av_core,
TAO_AV_FlowSpecSet &flow_spec_set);
int close_all (void);
TAO_AV_AcceptorSetItor begin (void);
TAO_AV_AcceptorSetItor end (void);
protected:
int open_default (TAO_Base_StreamEndPoint *endpoint,
TAO_AV_Core *av_core,
TAO_FlowSpec_Entry *entry);
TAO_AV_AcceptorSet acceptors_;
};
#if defined (__ACE_INLINE__)
#include "Transport.i"
#endif /* __ACE_INLINE__ */
#endif /* TAO_AV_TRANSPORT_H */
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