www.pudn.com > TestSMailer.zip > WinSockHelper.h

//////////////////////////////////////////////////////////////////////////////// 
// General utilities : WinSock helper classes 
// 
// Copyright (c) 2003 by Morning 
// http://morningspace.51.net 
// mailto:moyingzz@etang.com 
// 
// Permission to use, copy, modify, distribute and sell this program for any  
// purpose is hereby granted without fee, provided that the above copyright  
// notice appear in all copies and that both that copyright notice and this  
// permission notice appear in supporting documentation. 
// 
// It is provided "as is" without express or implied warranty. 
//////////////////////////////////////////////////////////////////////////////// 
 
#ifndef _WINSOCK_HELPER_H_ 
#define _WINSOCK_HELPER_H_ 
// 
#include  
#include  
#include  
// 
namespace MUtils { 
 
class WinSockException : public std::exception 
{ 
public: 
 
    WinSockException(const std::string message = "") 
     : _message(message) 
    { 
    } 
 
    const char *what() const throw () 
    { 
        return _message.c_str(); 
    } 
 
private: 
 
    std::string _message; 
}; 
 
class WinSockHelper 
{ 
public: 
 
    WinSockHelper() 
    { 
        WSADATA wsaData; 
        int result = WSAStartup(0x0002, &wsaData); 
 
        if ( result != 0 ) 
        { 
            throw WinSockException("WSAStartup error"); 
        } 
 
        if ( wsaData.wVersion != 0x0002) 
        { 
            WSACleanup( ); 
            throw WinSockException("Winsock version not support"); 
        } 
    } 
 
    ~WinSockHelper() throw() 
    { 
        WSACleanup(); 
    } 
}; 
 
} // namespace MUtils 
 
#endif // _WINSOCK_HELPER_H_