Re: [sr-dev] [kamailio/kamailio] tls: allow export session keys (#2785)

I have checked openssl sources, loogs as `BIO_printf` and `BIO_write` function to not use lock mechanism.

The solution would be to either have a lock around and do every time: lock, open file, write, close, unlock;

Why we cannot open file once and use logic inside childs ``` lock, write, unlock ```

I also noticed that the file name is reallocated in pkg using a local variable in a function and not freed.

is memory allocated here and not freed? ```diff @@ -636,6 +710,7 @@ int tls_h_mod_pre_init_f(void) #endif SSL_load_error_strings(); tls_mod_preinitialized=1; + prepare_keylog_file(cfg_get(tls, tls_cfg, session_keylog_filename)); return 0; }

```