会话恢复

建立 TLS 会话可能相对较慢。 可以通过保存并稍后重用会话状态来加快进程。 有几种机制可以做到这一点，这里从最旧到最新（和首选）进行了讨论。

Establishing a TLS session can be relatively slow. The process can be sped up by saving and later reusing the session state. There are several mechanisms to do so, discussed here from oldest to newest (and preferred).