> On 25 Jun 2023, at 11:25, 洪志道 <hongzhidao@gmail.com> wrote:
>
> Hi,
> I wonder if the `ngx_http_headers_out` variable is being used? If yes, what is it for?
>
> ```
> /* src/http/ngx_http_header_filter_module.c */
>
> ngx_http_header_out_t ngx_http_headers_out[] = {
> { ngx_string("Server"), offsetof(ngx_http_headers_out_t, server) },
> { ngx_string("Date"), offsetof(ngx_http_headers_out_t, date) },
> @@ -151,6 +152,7 @@
>
> { ngx_null_string, 0 }
> };
> ```
>

It was used to support Apache LogFormat %{VARNAME}o syntax before 0.5.0.

--
Sergey Kandaurov
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