Accessing custom upstream proxy header

[Maxim Dounin]

Hello!

On Mon, Dec 17, 2012 at 03:05:51PM -0500, preinde wrote:

> Good morning,
> 
> Using ngx_http_request_t, how can I access a custom upstream header within a
> module, for example:
> 
> r->upstream->headers_in->xxx_my_header->value
> 
> No matter what I try, it doesn't appear to be working

Obviously enough the r->upstream->headers_in structure won't 
contain any specific members for your custom header unless you 
patch nginx.

If you want to search for a custom header within a module, you 
have to iterate though &r->upstream->headers_in.headers list.  See 
e.g.  ngx_http_upstream_header_variable() and 
ngx_http_variable_unknown_header(), used to implement 
$upstream_http_* variables. 

-- 
Maxim Dounin
http://nginx.com/support.html