[lwip-users] mbedtls integration

[Giuseppe Modugno]

In the past I enabled ALTCP layer to add TLS and I used 
altcp_tls_mbedtls examples present in lwip repo.
I thought it was the way to add TLS to lwip.

Recently I looked at some example projects of NXP, such as this[1].
This is an example of a TLS httpd server. TLS is added by mbedtls, but 
ALTCP lwip support is NOT enabled (and altcp_tls_mbedtls is NOT enabled 
too).

It seems NXP uses a different (patched?) httpd implementation with 
integrated mbedtls support. I couldn't understand if this is a smarter 
way to add TLS support to lwip (that avoid ALTCP at all) or an old way 
that should be avoided nowadays that is available ALTCP and 
altcp_tls_mbedtls.


[1] 
https://github.com/nxp-mcuxpresso/mcux-sdk-examples/tree/main/lpcxpresso54628/lwip_examples/lwip_httpssrv_mbedTLS/bm