Re: [lwip-users] altcp_mbedtls conf and debug

[Mário Luzeiro]

I found it>
lwip outputs the debug only if level is >= ALTCP_MBEDTLS_LIB_DEBUG_LEVEL_MIN
but mbedtls only outputs if level is <= mbedtls_debug_set_threshold (default to 
0)

So the best options at this moment is to set ALTCP_MBEDTLS_LIB_DEBUG_LEVEL_MIN 
to 0 and adjust mbedtls_debug_set_threshold 0...4 (more debug)

Mario

________________________________________
From: lwip-users <lwip-users-bounces+mrluzeiro=ua.pt@nongnu.org> on behalf of 
lwip-users-bounces+mrluzeiro=ua.pt@nongnu.org 
<lwip-users-bounces+mrluzeiro=ua.pt@nongnu.org>
Sent: 13 July 2021 09:49
To: lwip-users@nongnu.org
Subject: Re: [lwip-users] altcp_mbedtls conf and debug

I found that there is a
ALTCP_MBEDTLS_LIB_DEBUG (I'm setting it to LWIP_DBG_ON) and a 
ALTCP_MBEDTLS_LIB_DEBUG_LEVEL_MIN (I'm setting it to 0)

I noticed that mbedtls has this function that you *may want* to set
mbedtls_debug_set_threshold( ALTCP_MBEDTLS_LIB_DEBUG_LEVEL_MIN );

However, even this way, I have little or no debug from mbedtls.

I have LWIP_DEBUG set, LWIP_DBG_MIN_LEVEL to LWIP_DBG_LEVEL_ALL

Am I missing something?

Mario Luzeiro

________________________________________
From: lwip-users <lwip-users-bounces+mrluzeiro=ua.pt@nongnu.org> on behalf of 
lwip-users-bounces+mrluzeiro=ua.pt@nongnu.org 
<lwip-users-bounces+mrluzeiro=ua.pt@nongnu.org>
Sent: 12 July 2021 18:57
To: lwip-users@nongnu.org
Subject: [lwip-users] altcp_mbedtls conf and debug

Hello all,

I'm trying to setup the debug on mbedtls.

It looks that mbedtls debug mechanism is configured by setting the debug print 
function on a "conf" element, set by using the function mbedtls_ssl_conf_dbg.

However looking for the lwip altcp_mbedtls interface, it looks it is creating a 
conf "on the fly", so the debug functions are null all the time and I can't get 
it work.

Is somehow possible that I can setup that conf by some callback means? Is it 
implemented ?

Mario Luzeiro

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