Link.h

// Copyright 2008 Michael Marsh, University of Maryland.
//
// This file is part of pydtn.
//
// pydtn is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// pydtn is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with pydtn.  If not, see <http://www.gnu.org/licenses/>.
//
// The views and conclusions contained in the software and documentation
// are those of the authors and should not be interpreted as representing
// official policies, either expressed or implied, of the University
// of Maryland.
//
// pydtn extends and embeds the Python interpreter, which is
// Copyright 2001-2006 Python Software Foundation, All Rights Reserved,
// and is released under the PSF License Agreement.
//
// RANLUX random number generation uses the Boost library,
// Copyright 1994-2006 by various authors (details in individual files),
// which is released under the Boost Software License, Version 1.0.

#ifndef __DTN_LINK_H__
#define __DTN_LINK_H__

#include "config.h"
#include "Exception.h"
#include "ByteString.h"

namespace DTN
{

   class Bundle;

   class Link
   {
      public:
         Link() {}

         virtual ~Link() {}

         virtual bool available() const { return true; }

         virtual void send( Bundle* b ) = 0;

         virtual const ByteString& remoteAddr() const = 0;

      protected:
      private:
   };

   class LinkUnavailable : public Exception
   {
      public :
         LinkUnavailable( const std::string& fname, int line ) :
            Exception( fname, line )
         {}

         virtual ~LinkUnavailable() {};
   };
}; // DTN

#endif /* __DTN_LINK_H__ */

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