cipher            566 event/ngx_event_openssl.c         SSL_CIPHER  *cipher;
cipher            568 event/ngx_event_openssl.c         cipher = SSL_get_current_cipher(c->ssl->connection);
cipher            570 event/ngx_event_openssl.c         if (cipher) {
cipher            571 event/ngx_event_openssl.c             SSL_CIPHER_description(cipher, &buf[1], 128);