Mark Knoop <> wrote:
> Hi
>
> I would like to pass through almost all http request headers from the
> browser that accesses my gci script to a request that I make to
> another host.
>
> I can obtain a list of all HTTP request header names by using the cgi
> http() function and access the values by using
> $ENV{$http_header_name};
>
> Some of the header names I have seen returned are
>
> HTTPS_SERVER_ISSUER
> HTTP_USER_AGENT
> HTTP_ACCEPT_LANGUAGE
> HTTPS_KEYSIZE
> HTTPS
> HTTP_REFERER
> HTTP_ACCEPT_CHARSET
> HTTP_HOST
> ...
>
> Now if I want to make a request using the same headers (with perhaps
> one or two being changed as required - therefore I need to be able to
> process them
> individually) I can use the LWP::UserAgent get() method, however it
> looks like I should use the header names as they would appear in the
> http request which are not the same as the header names returned by
> http().
>
> (from an example on
> http://www.perl.com/pub/a/2002/08/20/perlandlwp.html?page=2 )
>
> $response = $browser->get($url,
> 'User-Agent' => 'Mozilla/4.76 [en] (Win98; U)',
> 'Accept' => 'image/gif, image/x-xbitmap, image/jpeg,
> image/pjpeg, image/png, */*',
> 'Accept-Charset' => 'iso-8859-1,*,utf-8',
> 'Accept-Language' => 'en-US',
> );
>
>
> So - can anyone suggest a method of getting from HTTP_USER_AGENT to
> User-Agent - and so on for all http headers present (many of which I
> will not know in advance)?
>
> It feels like I am missing something really obvious...
AFAIK, the CGI only provides indirect and incomplete access to the
contents of the original HTTP request via the environment variable that
you already know about. If you need more complete and accurate access to
the HTTP request, the CGI is probably not appropriate. What you are
suggesting sound like something a proxy server might do, so have a look
at HTTP::Daemon, or even HTTP::Proxy.
HTH
--
Brian Raven
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