Beefy Boxes and Bandwidth Generously Provided by pair Networks
Problems? Is your data what you think it is?
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

Greetings to All,

I asked this question in the chatterbox a couple of weeks back, but looks like this task is tougher than I thought. Hence I'm posting it here in the hopes it reaches a wider audience and of course, a solution.

I need to get the exact order in which the HTTP request headers were sent by the browser from within my CGI script. I need this to perform browser fingerprinting.

All the following don't seem to work

# %header will be in random order my $q = CGI->new; my %header = map { lc($_) => $q->http($_) } $q->http; # %ENV is in random order print Dumper \%ENV my $h = HTTP::Headers->new(%ENV); # this returns the headers in the recommended # "Good Practice" order. print Dumper $h->header_field_names; # this doesn't work as well print $h->as_string;

You can check the order in which the request headers were sent using Firebug.

PHP's getfullheaders() works :(

Any help would be great. Perhaps some Apache module can help? I will be releasing code to this fingerprinting module to CPAN.

Thanks!


In reply to Get the order of HTTP request headers by arc_of_descent

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others imbibing at the Monastery: (14)
    As of 2015-07-01 21:10 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









      Results (22 votes), past polls