#if !defined(RESIP_BASEUSAGE_HXX)
#define RESIP_BASEUSAGE_HXX

#include "resiprocate/os/BaseException.hxx"
#include "resiprocate/dum/Handled.hxx"
#include "resiprocate/dum/Handles.hxx"

namespace resip
{

class DialogUsageManager;
class Dialog;
class DumTimeout;
class SipMessage;
class NameAddr;

class BaseUsage : public Handled
{
   public:
      class Exception : public BaseException
      {
         public:
            Exception(const Data& msg,const Data& file,int line);
            virtual const char* name() const;
      };

      virtual void end()=0;
      virtual void send(SipMessage& request);
      virtual std::ostream& dump(std::ostream& strm) const;
      
   protected:
      BaseUsage(DialogUsageManager& dum);      
      virtual ~BaseUsage();

      virtual void dispatch(const SipMessage& msg) = 0;
      virtual void dispatch(const DumTimeout& timer) = 0;
      
      BaseUsageHandle getBaseHandle();

      DialogUsageManager& mDum;
   private:
      BaseUsageHandle mHandle;
      
      friend class DestroyUsage;
      friend class DialogUsageManager;
};

}

#endif