+#ifndef OPENSSL_NO_TLSEXT
+ ret->tlsext_servername_callback = 0;
+ ret->tlsext_servername_arg = NULL;
+ /* Setup RFC4507 ticket keys */
+ if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
+ || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
+ || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
+ ret->options |= SSL_OP_NO_TICKET;
+
+ ret->tlsext_status_cb = 0;
+ ret->tlsext_status_arg = NULL;
+
+#endif
+
+#ifndef OPENSSL_NO_ENGINE
+ ret->client_cert_engine = NULL;
+#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
+#define eng_strx(x) #x
+#define eng_str(x) eng_strx(x)
+ /* Use specific client engine automatically... ignore errors */
+ {
+ ENGINE *eng;
+ eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
+ if (!eng)
+ {
+ ERR_clear_error();
+ ENGINE_load_builtin_engines();
+ eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
+ }
+ if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
+ ERR_clear_error();
+ }
+#endif
+#endif
+