SSL_set_wfd
LSSL_USED(SSL_set_wfd);
int SSL_set_wfd(SSL *s, int fd);
LSSL_ALIAS(SSL_set_wfd);
SSL_set_wfd(ctx->ssl_conn, fd_write) != 1) {
SSL_set_wfd(conn_ctx->ssl_conn, fd_write) != 1) {