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Connection.hh

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00001 // Connection.hh - source file for the mailfilter program
00002 // Copyright (c) 2000 - 2004  Andreas Bauer <baueran@in.tum.de>
00003 //
00004 // This program is free software; you can redistribute it and/or modify
00005 // it under the terms of the GNU General Public License as published by
00006 // the Free Software Foundation; either version 2 of the License, or
00007 // (at your option) any later version.
00008 //
00009 // This program is distributed in the hope that it will be useful,
00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012 // GNU General Public License for more details.
00013 //
00014 // You should have received a copy of the GNU General Public License
00015 // along with this program; if not, write to the Free Software
00016 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
00017 // USA.
00018 
00019 #ifndef CONNECTION_HH
00020 #define CONNECTION_HH
00021 
00022 #ifndef MAX_BYTES
00023 #define MAX_BYTES 512
00024 #endif
00025 
00026 #include <string>
00027 
00028 using namespace std;
00029 
00030 namespace conn {
00031 
00032   class Connection {
00033   protected:
00034     bool isHeaderEnd(const string&);
00035     virtual int connectHost(const string&, int, int) = 0; // Establish network connection to the e-mail server on certain port number
00036     virtual int disconnectHost(void) = 0;                 // Close network connection to the e-mail server
00037     virtual int sendHost(const string&) = 0;              // Send command to the e-mail server
00038     virtual string receiveHost(const bool) = 0;           // Receive (string) results from the e-mail server (after a command was issued)
00039                                                           // If argument is 'true', we expect a single-line response from the server, otherwise multi-line response is expected
00040 
00041   public:
00042     virtual ~Connection() = 0;
00043   };
00044   
00045   // Exceptions
00046   class IOException { };
00047   class ConnectionTimeOut { };
00048 
00049 }
00050 
00051 #endif

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