boost::function 通过boost::bind 回调类成员函数

typedef std::vector<uint8_t> buffer_t;
typedef boost::function<void(buffer_t&)> recv_callback_t;

void tcp_client::set_recv_callback(recv_callback_t cb){
    recv_callback_ = cb; 
}

tcp_client *client_ptr = new tcp_client(...);
client_ptr_->set_recv_callback(boost::bind(&network_interface::recv_callback_, this, _1));

void recv_callback_(std::vector<uint8_t>&buf);