looks like the support for Heart beat extension is removed from openssl

[Salz, Rich]

  *   Why the support for Heart beat extension is removed from openssl.

It’s intended use was to check MTU along the path.  That is not very useful any more.



  *   How to handle abnormal disconnection in DTLS？

You should be able to detect time-outs and “failure to close” in your application.
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