Restrictions to modifying request->headers_in.headers in NGX_HTTP_PREACCESS_PHASE?
mdounin at mdounin.ru
Thu Mar 29 13:40:35 UTC 2018
On Wed, Mar 28, 2018 at 04:15:44PM -0400, Ryan Burn wrote:
> > You are not allowed to modify r->headers_in, at any time.
> If I want to ensure that certain headers are added if the request is
> proxied upstream, is there any way to do that?
Recommended approach is to export a variable with the appropriate
value, and use
proxy_set_header X-Your-Header $your_variable;
in the configuration.
For example, nginx itself uses this approach with X-Forwarded-For,
see the $proxy_add_x_forwarded_for variable description here:
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