소켓을 완벽하게 안전히 종료하는방법

엄청 큰 실수를 저질를뻔했어... =_=







code = ::shutdown( m_hSocket, SD_BOTH );

if( code != SOCKET_ERROR )
{ 

    fd_set readfds; 
    fd_set errorfds; 
    timeval timeout; 

    FD_ZERO( &readfds ); 
    FD_ZERO( &errorfds ); 
    FD_SET( m_hSocket, &readfds ); 
    FD_SET( m_hSocket, &errorfds ); 
    timeout.tv_sec  = MAX_LINGER_SECONDS; 
    timeout.tv_usec = 0; 
    ::select( 1, &readfds, NULL, &errorfds, &timeout ); 
} 

code = ::closesocket( m_hSocket ); 
m_hSocket = INVALID_SOCKET;