developer.intra2net.com Git - libt2n/blob - src/socket_handler.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_SOCKET_HANDLER
  20 #define __LIBT2N_SOCKET_HANDLER
  21
  22 #include <iostream>
  23
  24 #include "types.hxx"
  25
  26 namespace libt2n
  27 {
  28
  29 /** @brief handles socket based communication.
  30     Don't use directly, use socket_server or socket_client_connection instead.
  31 */
  32 class socket_handler
  33 {
  34     private:
  35         static const unsigned int recv_buffer_size=2048;
  36         static const unsigned int write_block_size=4096;
  37
  38         socket_type_value socket_type;
  39
  40         bool data_waiting(long long usec_timeout,long long *timeout_remaining=NULL);
  41
  42     protected:
  43         int sock;
  44
  45         socket_handler(int _sock, socket_type_value _socket_type)
  46             { sock=_sock; socket_type=_socket_type; }
  47
  48         void set_socket_options(int sock);
  49
  50         virtual std::ostream* get_logstream(log_level_values level)
  51             { return NULL; }
  52
  53         void socket_write(const std::string& data);
  54
  55         virtual void close();
  56
  57         bool fill_buffer(std::string& buffer, long long usec_timeout, long long*timeout_remaining=NULL);
  58         bool fill_buffer(std::string& buffer);
  59
  60     public:
  61         /// is this a tcp or udp socket connection
  62         socket_type_value get_type()
  63             { return socket_type; }
  64
  65         bool is_closed();
  66 };
  67
  68 }
  69
  70 #endif