Hi is there a way to know the supported TLS protocols from the OPENSSL_VERSION_NUMBER (specifically, the TLSv1_1 and TLSv1_2? For exemple, I have a code that is using TLSv1_1_client_method & TLSv1_1_server_method for a OPENSSL_VERSION_NUMBER = 0x1000201fL, but I need to protect those TLSv1_1 and TLSv1_2 entry points references when my code is ported toward a previous version of OpenSSL that does not support those TLS versions as the 1.0.0k version . Since there is no OPEN_SSL_NO_TLSv1_1 constant nor OPEN_SSL_NO_TLSv1_2 constant in the ssl.h(1.0.0k), I would like to use the OPENSSL_VERSION_NUMBER to protect the references. Cheers zos This email has been protected by YAC (Yet Another Cleaner) http://www.yac.mx