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// -*- C++ -*-
/**
* @file ECG_UDP_Out_Endpoint.h
*
* @author Carlos O'Ryan (coryan@cs.wustl.edu)
* @author Marina Spivak (marina@atdesk.com)
*/
#ifndef TAO_ECG_UDP_OUT_ENDPOINT_H
#define TAO_ECG_UDP_OUT_ENDPOINT_H
#include /**/ "ace/pre.h"
#include /**/ "orbsvcs/Event/event_serv_export.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "tao/Basic_Types.h"
#include "tao/orbconf.h"
#include "ace/Refcounted_Auto_Ptr.h"
#include "ace/SOCK_Dgram.h"
#include "ace/Atomic_Op.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
class ACE_INET_Addr;
ACE_END_VERSIONED_NAMESPACE_DECL
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
/**
* @class TAO_ECG_UDP_Out_Endpoint
*
* @brief Maintains information about an outgoing endpoint.
*
* UDP senders can share a single endpoint to send UDP packets,
* but there is more state associated with this endpoint than its
* datagram SAP; for instance we need to keep track of the request
* id.
*/
class TAO_RTEvent_Serv_Export TAO_ECG_UDP_Out_Endpoint
{
public:
/// Constructor
TAO_ECG_UDP_Out_Endpoint (void);
/// Constructor
~TAO_ECG_UDP_Out_Endpoint (void);
/// Copy Constructor
TAO_ECG_UDP_Out_Endpoint (const TAO_ECG_UDP_Out_Endpoint& rhs);
/// Assignment operator
TAO_ECG_UDP_Out_Endpoint& operator= (const TAO_ECG_UDP_Out_Endpoint& rhs);
/// Obtain the datagram associated with this endpoint. Clients of
/// this class must open, and register (if necessary) this datagram.
ACE_SOCK_Dgram& dgram (void);
/// Obtain the next request id.
CORBA::ULong next_request_id (void);
/// The endpoint can detect if a data-gram was sent by itself, this
/// is useful to ignore or remove messages sent by the same process.
CORBA::Boolean is_loopback (const ACE_INET_Addr& from);
private:
/// The request id....
ACE_Atomic_Op<TAO_SYNCH_MUTEX,CORBA::ULong> request_id_generator_;
/// The datagram....
ACE_SOCK_Dgram dgram_;
/// Cache the port-number so we can quickly determine if an event is
/// coming from another endpoint.
u_short port_number_;
/// Keep the list of local interfaces, needed for the is_loopback
/// method.
size_t if_count_;
ACE_INET_Addr* ifs_;
};
/**
* @typedef TAO_ECG_Refcounted_Endpoint
*
* @brief Reference counted pointer to TAO_ECG_UDP_Out_Endpoint
*
* Instances of TAO_ECG_UDP_Out_Endpoint are used by multiple objects
* in the Event Channel gateways, the endpoints are reference counted
* to manage their lifetime automatically.
*/
typedef ACE_Refcounted_Auto_Ptr<TAO_ECG_UDP_Out_Endpoint,ACE_Null_Mutex> TAO_ECG_Refcounted_Endpoint;
TAO_END_VERSIONED_NAMESPACE_DECL
#if defined(__ACE_INLINE__)
#include "orbsvcs/Event/ECG_UDP_Out_Endpoint.inl"
#endif /* __ACE_INLINE__ */
#include /**/ "ace/post.h"
#endif /* TAO_ECG_UDP_OUT_ENDPOINT_H */
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