This may help:

View HTTP Request and Response Header http://web-sniffer.net/


On Mon, Dec 17, 2012 at 5:29 PM, E. Westbrook <nginx@westbrook.com> wrote:

> Hi!
>
> I'm new to the list; so please accept my apologies and do kindly correct
> me if I've missed something in my research, or if I'm not complying with
> any particular social custom or etiquette on this list.
>
> I'm using nginx's integrated perl support, and all is going well so far,
> but I'm missing one critical thing right now: a way to get a list of all
> of the request headers.
>
> I can certainly use $r->header_in() to obtain any given specific header,
> which works well if I know the header in advance -- but in my case I need
> to iterate all of the incoming request headers, even (especially, actually)
> headers whose presence I would not have anticipated.
>
> I do see some references to Nginx modules on CPAN, and in at least one of
> those, a $r->headers_in() method... but those modules are not the same
> animal as the built-in "nginx" module, are they.
>
> Please help!
>
> Thanks,
> Eric
>
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