developer.intra2net.com Git - libt2n/blob - src/connection.hxx

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Gerd v. Egidy                                   *
   3  *   gve@intra2net.com                                                     *
   4  *                                                                         *
   5  *   This library is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU Lesser General Public License version   *
   7  *   2.1 as published by the Free Software Foundation.                     *
   8  *                                                                         *
   9  *   This library is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU Lesser General Public License for more details.                   *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU Lesser General Public      *
  15  *   License along with this program; if not, write to the                 *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  18  ***************************************************************************/
  19 #ifndef __LIBT2N_CONNECTION
  20 #define __LIBT2N_CONNECTION
  21
  22 #include <string>
  23
  24 namespace libt2n
  25 {
  26
  27 class connection
  28 {
  29     private:
  30         bool closed;
  31
  32     protected:
  33         connection()
  34         { closed=false; }
  35
  36         std::string buffer;
  37
  38         typedef unsigned int packet_size_indicator;
  39
  40         packet_size_indicator bytes_available();
  41
  42         virtual void real_write(const std::string& data)=0;
  43
  44     public:
  45         virtual ~connection()
  46             { close(); }
  47
  48         bool is_closed()
  49             { return closed; }
  50
  51         virtual void close()
  52             { closed=true; }
  53
  54         virtual bool fill_buffer(long long usec_timeout=-1)=0;
  55         bool get_packet(std::string& data);
  56         bool packet_available()
  57             { return bytes_available(); }
  58
  59         void write(const std::string& data);
  60 };
  61
  62 }
  63
  64 #endif