//%2003////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2000, 2001, 2002  BMC Software, Hewlett-Packard Development
// Company, L. P., IBM Corp., The Open Group, Tivoli Systems.
// Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L. P.;
// IBM Corp.; EMC Corporation, The Open Group.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
// ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//==============================================================================
//
// Author: Mike Brasher (mbrasher@bmc.com)
//
// Modified By:  Jenny Yu (jenny_yu@hp.com)
//
//%/////////////////////////////////////////////////////////////////////////////

#ifndef Pegasus_HTTPAcceptor_h
#define Pegasus_HTTPAcceptor_h

#include <Pegasus/Common/Config.h>
#include <Pegasus/Common/MessageQueue.h>
#include <Pegasus/Common/HTTPConnection.h>
#include <Pegasus/Common/Monitor.h>
#include <Pegasus/Common/String.h>
#include <Pegasus/Common/TLS.h>
#if defined(PEGASUS_HAS_SSL)
#include <Pegasus/Common/SSLContext.h>
#endif
#include <Pegasus/Common/Linkage.h>

PEGASUS_NAMESPACE_BEGIN

class HTTPAcceptorRep;
class Monitor;
/** Instances of this class listen on a port and accept conections.
*/
class PEGASUS_COMMON_LINKAGE HTTPAcceptor : public MessageQueue
{
   public:
      typedef MessageQueue Base;
  
      /** Constructor.
	  @param monitor pointer to monitor object which this class uses to
	  solicit SocketMessages on the server port (socket).
	  @param outputMessageQueue output message queue for connections
	  created by this acceptor.
	  @param localConnection Boolean indicating whether this acceptor is
	  only for local connections.  If true, the portNumber argument is
	  ignored.
	  @param portNumber Specifies which port number this acceptor is to
	  listen on.
	  @param sslcontext If null, this acceptor does not create SSL
	  connections.  If non-null, the argument specifies an SSL context to
	  use for connections established by this acceptor.
      */
      HTTPAcceptor(Monitor* monitor,
                   MessageQueue* outputMessageQueue,
                   Boolean localConnection,
                   Uint32 portNumber,
                   SSLContext * sslcontext);

      /** Destructor. */
      ~HTTPAcceptor();

      /** This method is called whenever a SocketMessage is enqueued
	  on the input queue of the HTTPAcceptor object.
      */ 

      virtual void handleEnqueue(Message *);
    
      virtual void handleEnqueue();

      /** Bind the specified listen socket.
          @exception throws BindFailedException if unable to bind (either
          because the listen socket is invalid or the socket is in use).
      */
      void bind();

      /** Unbind from the given port.
       */
      void unbind();

      /** Close the connection socket.
       */
      void closeConnectionSocket();

      /** Reopen the connection socket.
       */
      void reopenConnectionSocket();

      /** Destroys all the connections created by this acceptor. */
      void destroyConnections();

      /** Returns the number of outstanding requests
       */
      Uint32 getOutstandingRequestCount();

   private:

      void _acceptConnection();
      void _bind();

      cimom *_meta_dispatcher;
    

      Monitor* _monitor;
      MessageQueue* _outputMessageQueue;
      HTTPAcceptorRep* _rep;

      int _entry_index;

      Boolean _localConnection;
      Uint32  _portNumber;
      SSLContext * _sslcontext;
};

class HTTPConnection2;

class PEGASUS_COMMON_LINKAGE pegasus_acceptor 
{
 public:

  pegasus_acceptor(monitor_2* monitor, 
		   MessageQueue* outputMessageQueue, 
		   Boolean localConnection, 
		   Uint32 portNumber,
		   SSLContext* sslcontext);

  ~pegasus_acceptor(void);
  
  void bind();

      /** Unbind from the given port.
       */
  void unbind();

      /** Close the connection socket.
       */
  void closeConnectionSocket();

      /** Reopen the connection socket.
       */
  void reopenConnectionSocket();

  /** Returns the number of outstanding requests
   */
  Uint32 getOutstandingRequestCount();
  
  Boolean operator ==(const pegasus_acceptor& );
  Boolean operator ==(void*);
  
  static pegasus_acceptor* find_acceptor(Boolean local, Uint32 port);
  static void accept_dispatch(monitor_2_entry*);
  static void close_all_acceptors(void);
  
 private:
  pegasus_acceptor(void);
  
  monitor_2* _monitor;
  MessageQueue* _outputMessageQueue;
  
  Boolean _localConnection;
  Uint32  _portNumber;
  SSLContext * _sslcontext;
  pegasus_socket _listener;

  AsyncDQueue<HTTPConnection2> connections;
  static AsyncDQueue<pegasus_acceptor> acceptors;
  
};

PEGASUS_NAMESPACE_END

#endif /* Pegasus_HTTPAcceptor_h */
