www.pudn.com > rbScanner.rar > SocketFun.cpp

// SocketFun.cpp: implementation of the CSocketFun class. 
// 
////////////////////////////////////////////////////////////////////// 
 
#include "stdafx.h" 
#include "try4.h" 
#include "SocketFun.h" 
 
#ifdef _DEBUG 
#undef THIS_FILE 
static char THIS_FILE[]=__FILE__; 
#define new DEBUG_NEW 
#endif 
 
////////////////////////////////////////////////////////////////////// 
// Construction/Destruction 
////////////////////////////////////////////////////////////////////// 
 
CSocketFun::CSocketFun() 
{ 
 
} 
 
CSocketFun::~CSocketFun() 
{ 
 
} 
 
int CSocketFun::StartUp() 
{ 
	WORD    wVersionRequested; 
	WSADATA wsaData; 
	int     err;  
	 
	wVersionRequested = MAKEWORD( 2, 0 );  
	err = WSAStartup( wVersionRequested, &wsaData ); 
	if ( err != 0 ) { 
		// Couldn't find a usable WinSock DLL.                                  */     
		return err; 
	}  
 
	// Confirm that the WinSock DLL supports 2.0. 
	// Note that if the DLL supports versions greater 
	// than 2.0 in addition to 2.0, it will still return 
	// 2.0 in wVersion since that is the version we 
	// requested.  
	if ( LOBYTE( wsaData.wVersion ) != 2 || 
        HIBYTE( wsaData.wVersion ) != 0 ) { 
		// Couldn't find a usable WinSock DLL. 
		WSACleanup( ); 
		return WSAVERNOTSUPPORTED;  
	}  
	 
	// The WinSock DLL is acceptable 
	return 0; 
 
} 
 
int CSocketFun::CleanUp() 
{ 
	int nRetCode; 
	nRetCode = WSACleanup(); 
	if (nRetCode != 0) { 
		// An error occured.  
		return WSAGetLastError(); 
	} 
 
	return 0;  
}