ngx_base64_encoded_length  372 http/modules/ngx_http_userid_filter_module.c     len = conf->name.len + 1 + ngx_base64_encoded_length(16) + conf->path.len;
ngx_base64_encoded_length  464 mail/ngx_mail_handler.c     p = ngx_pnalloc(c->pool, len + ngx_base64_encoded_length(s->salt.len) + 2);