proxy_set_header directives don't inherit from father context

[nanaya]

Hi,

On Wed, Jul 5, 2017, at 14:41, foxgab wrote:
> i expected the X-Forwarded-For and X-Forwarded-Proto header will be set,
> but
> it didn't.
> what happend?
> 


Quite a few of additive configs (proxy_set_header, add_header) are only
inherited if there's no same directive set at current block.

>From documentation [1]:

> These directives are inherited from the previous level if and only if there are no proxy_set_header directives defined on the current level.

[1]
http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_set_header