TLS心跳扩展为TLS/DTLS提供了一种允许在不重新进行商议和发送路径MTU探索包（PMTU）的情况下而使用保持持续通信功能的新协议。
The Heartbeat Extension provides a new protocol for TLS/DTLS allowing the usage of keep-alive functionality without performing a renegotiation and a basis for path MTU (PMTU) discovery for DTLS.
这就是转发路由路径，并且通常将发送带有包括单个目的地的路径的请求消息。
This is known as the forward routing path, and typically a request message will be sent with a path containing a single destination.
名称和标记都是以“路径”形式发送的，pathlen字段中对其长度进行了说明。
The name and tag are sent as the "path", with their length indicated in the pathlen field.
应用推荐