Hello!

On Mon, Mar 16, 2015 at 03:14:15PM +0300, Marat Dakota wrote:

> Hi,
>
> I was digging the reason why add_header in nginx config doesn't work for a
> subrequest and I've found this in ngx_http_headers_filter_module.c:
>
> if ((conf->expires == NGX_HTTP_EXPIRES_OFF && conf->headers == NULL)
> || r != r->main)
> {
> return ngx_http_next_header_filter(r);
> }
>
> Is there a particular reason to skip the filter for everything that's not a
> main request?

The main reason is that there are no headers in subrequest
responses. Headers are returned by the main request only.

--
Maxim Dounin
http://nginx.org/

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