mbedtls_ssl_conf_authmode( &cd->conf, MBEDTLS_SSL_VERIFY_REQUIRED ); mbedtls_ssl_conf_ca_chain( &cd->conf, &cd->ca_cert, NULL ); if( ( ret = mbedtls_ssl_conf_own_cert( &cd->conf, &cd->client_cert, &cd->client_pkey ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_...