• Registered: 2019-05-20
  • Posts: 3

Topic: DTLS 1.2 RFC6520 support - heart beat

Do you support heart beat, RFC6520 for DTLS like you do for TLS?  In not, do you have any plans to?

Thanks,
Craig

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  • From: Bozeman
  • Registered: 2014-05-09
  • Posts: 777

Re: DTLS 1.2 RFC6520 support - heart beat

Hi Craig,

Can you tell us a bit about your project and what you are working on? wolfSSL does not support the Heartbeat extension in either protocol (TLS nor DTLS). Can you tell us why you would need the extension and if you would like us to add it to our internal feature request list?

Feature requests are worked on when we have free engineering cycles and have no definitive timeline but can always be accelerated through customer backing if there is a high need and short timeline.

Looking forward to hearing more about your project.


Warm Regards,

K

Kaleb J. Himes's Website

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  • Registered: 2019-05-20
  • Posts: 3

Re: DTLS 1.2 RFC6520 support - heart beat

Hi Kaleb,

We want to use CoAP over DTLS for device to cloud IoT communications without having to renegotiate sessions and to also be able to issue async cloud commands.  The heart beat would keep the session alive through the NAT traversal of most firewalls.

This could be handled at the CoAP layer with additional timers and pings but it would be more efficient and cleaner to do at the DTLS layer.

The bytes sent from the heart beats can add up particularly over cellular or other per byte cost models.  It seems it could be done with fewer traffic bytes at the network layer.

Thanks for the fast response,
Craig

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  • Registered: 2019-05-20
  • Posts: 3

Re: DTLS 1.2 RFC6520 support - heart beat

Hi Kaleb,

Yes, please add this to your internal feature request list.  We would be willing to test and validate.

Regards,
Craig

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