Re: [lwip-devel] altcp_tls_mbedtls: MBEDTLS_ECP_RESTARTABLE

[Giuseppe Modugno]

Il 25/06/2019 14:29, Simon Goldschmidt ha scritto:
> "Giuseppe Modugno" wrote:
> > No it doesn't work. Poll callback is called only 2 times a second.
> > mbedtls_handshake() must be called several times until it doesn't return
> > CRYPTO_IN_PROGRESS. With poll callback the handshake would take too much
> > time.
> >
> > Another possibility is to fire a timeout that is already expired:
> > sys_timeout(0, ...).
> >
> > Do you think there's a better solution?
> Not really. If you implement the sys_timeout() thing, you might want to
> find a solution that doesn't use one sys_timeout() per connection.
In my case I have only one TLS connection, so it's not important.
> And
> a fallback to using 'poll' might be good as well (as sys_timeout() can
> fail due to lack of resources).

As I said, poll can't be used because it is called only two times per 
second.