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Connection.h

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00001 /*
00002 Copyright (c) 2000,2001, Jelle Kok, University of Amsterdam
00003 All rights reserved.
00004 
00005 Redistribution and use in source and binary forms, with or without 
00006 modification, are permitted provided that the following conditions are met:
00007 
00008 1. Redistributions of source code must retain the above copyright notice, this 
00009 list of conditions and the following disclaimer. 
00010 
00011 2. Redistributions in binary form must reproduce the above copyright notice, 
00012 this list of conditions and the following disclaimer in the documentation 
00013 and/or other materials provided with the distribution. 
00014 
00015 3. Neither the name of the University of Amsterdam nor the names of its 
00016 contributors may be used to endorse or promote products derived from this 
00017 software without specific prior written permission. 
00018 
00019 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
00020 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
00021 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
00022 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE 
00023 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
00024 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
00025 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
00026 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 
00027 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
00028 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00029 */
00043 #ifndef _CONNECTION_
00044 #define _CONNECTION_
00045 
00046 #include <stdio.h>     // printf, FILE
00047 #include <ostream.h>   // ostream
00048 #include <netdb.h>     // sockaddr_in
00049 #include <arpa/inet.h> // sockaddr_in
00050 
00052 typedef struct _socket{
00053     int    socketfd  ;                
00054     struct sockaddr_in  serv_addr ;   
00055 } Socket ;
00056 
00057 /********************** CONNECTION ********************************************/
00058 
00064 class Connection {
00065 
00066   Socket         m_sock;        
00067   int            m_iMaxMsgSize; 
00068 public:
00069 
00070   // constructors
00071   Connection            (                                               );
00072   Connection            ( const char *hostname, int  port,   int iSize  );
00073   ~Connection           (                                               );
00074 
00075   // methods that deal with the connection itself
00076   bool connect          ( const char *host,     int  port               );
00077   void disconnect       ( void                                          );
00078   bool isConnected      ( void                                          ) const;
00079 
00080   // methods that deal with the communication over the connection
00081   int  message_loop     ( FILE       *in,       FILE *out               );
00082   int  receiveMessage   ( char       *msg,      int  maxsize            );
00083   bool sendMessage      ( const char *msg                               );
00084 
00085   void show             ( ostream    os                                 );
00086 
00087 };
00088 
00089 #endif

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