我计划通过制作小型运动网络服务器来展示我的课堂上的心脏出血错误是如何工作的。所以使用虚拟机，我安装了 Ubuntu 14.04 OS，它有易受攻击的 openssl(1.0.1f) 版本。并安装了 apache2，制作了小型网站。但是当我在我的 mac 操作系统中运行 heartbleed python 代码到那个网站时，我只得到了
`Connecting...
Sending Client Hello...
Waiting for Server Hello...
... received message: type = 22, ver = 0302, length = 66
... received message: type = 22, ver = 0302, length = 991
... received message: type = 22, ver = 0302, length = 411
... received message: type = 22, ver = 0302, length = 4
Sending heartbeat request...
Unexpected EOF receiving record header - server closed connection
No heartbeat response received, server likely not vulnerable enter code
here`
它应该容易受到这种攻击吗？我不知道为什么会出现这个结果