Source of the ssl.h header file

[mtudan]

Hello,

When enabling ssl_fingerprints option in esphome, we get a similar error to this:

Compiling .pioenvs/xxxx/lib975/ESPAsyncTCP-esphome/ESPAsyncTCP.cpp.o
In file included from /piolibs/ESPAsyncTCP-esphome/src/ESPAsyncTCP.cpp:84:0:
/piolibs/ESPAsyncTCP-esphome/src/tcp_axtls.h:44:25: fatal error: include/ssl.h: No such file or directory
 #include "include/ssl.h"
                         ^
compilation terminated.

So my question is which library gives support for the missing ssl.h header included in the src/tcp_axtls.h file?

Best,
Matija