[Ovmsdev] OVMS going comatose

Stephen Casner casner at acm.org
Mon Apr 12 00:34:07 HKT 2021


Does TLS periodically require some potentially expensive cryptographic
operation such as generating a new key?  Perhaps there is a difference
in the period specification for MBEDTLS vs WolfSSL.

There are relatively expensive operations done when the connection is
established; those don't seem to cause WDT or queue overflow.  So if
there is a periodic expensive operation, the problem must be that
doing it in the midst of some other operation causes the problem.

                                                        -- Steve

On Sun, 11 Apr 2021, Michael Balzer wrote:

> Steve,
> I can confirm an increase of these events since we changed to WolfSSL, about
> once every three days currently for me. The frequency was much lower before,
> more like once or twice per month.
> I've disabled TLS on my module now and will report if that helps.
> Regards,
> Michael

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