{

protected:

#ifdef WIN32

HANDLE obj_list;

mutable std::vector<WSAPOLLFD> poll_events;

#elif POSIX

int obj_list;

mutable std::vector<struct ::epoll_event> epoll_events;

#else

#error "Undefine platform"

#endif

public:

SocketList();

bool create(const size_t startListSize = 1);

void destroy();

bool is_created() const;

bool addSocket(const Socket &sock);

bool removeSocket(const Socket &sock);

bool accept(std::vector<Socket> &sockets) const;

bool recv(std::vector<Socket> &sockets, std::vector<Socket> &errors, std::chrono::milliseconds timeout = std::chrono::milliseconds(~0) ) const;