/ 
Plack-1.0021
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/ Plack::Middleware::RearrangeHeaders
Security Advisories (2)
CPANSA-Plack-2015-0202 (2015-02-02)

Fixed a possible directory traversal with Plack::App::File on Win32.

CPANSA-Plack-2014-0801 (2014-08-01)

Plack::App::File would previously strip trailing slashes off provided paths. This in combination with the common pattern of serving files with Plack::Middleware::Static could allow an attacker to bypass a whitelist of generated files

NAME

Plack::Middleware::RearrangeHeaders - Reorder HTTP headers for buggy clients

SYNOPSIS

use Plack::Builder;

my $app = sub {
    return [ 200, [
        'Last-Modified' => 'Wed, 23 Sep 2009 13:36:33 GMT',
        'Content-Type' => 'text/plain',
        'ETag' => 'foo bar',
    ], [ 'Hello Foo' ] ];
};

builder {
    enable "Plack::Middleware::RearrangeHeaders";
    $app;
};

DESCRIPTION

Plack::Middleware::RearrangeHeaders sorts HTTP headers based on "Good Practice" i.e.:

# "Good Practice" order of HTTP message headers:
#    - Response-Headers
#    - Entity-Headers

to work around buggy clients like very old MSIE or broken HTTP proxy servers. Most clients today don't (and shouldn't) care about HTTP header order but if you're too pedantic or have some environments where you need to deal with buggy clients like above, this might be useful.

AUTHOR

Tatsuhiko Miyagawa

SEE ALSO

HTTP::Headers