NAME

CGI::Cookie::Splitter - Split big cookies into smaller ones.

VERSION

version 0.05

SYNOPSIS

    use CGI::Cookie::Splitter;

    my $splitter = CGI::Cookie::Splitter->new(
        size => 123, # defaults to 4096
    );

    @small_cookies = $splitter->split( @big_cookies );

    @big_cookies = $splitter->join( @small_cookies );

DESCRIPTION

RFC 2109 recommends that the minimal cookie size supported by the client is 4096 bytes. This has become a pretty standard value, and if your server sends larger cookies than that it's considered a no-no.

This module provides a pretty simple interface to generate small cookies that are under a certain limit, without wasting too much effort.

METHODS

new

    $splitter = CGI::Cookie::Splitter->new(%params)

The only supported parameters right now are "size". It defaults to 4096.

split

    @cookies = $splitter->split(@cookies)

This method accepts a list of CGI::Cookie objects (or lookalikes) and returns a list of CGI::Cookies.

Whenever an object with a total size that is bigger than the limit specified at construction time is encountered it is replaced in the result list with several objects of the same class, which are assigned serial names and have a smaller size and the same domain/path/expires/secure parameters.

join

    $cookie = $splitter->join(@cookies)

This is the inverse of "split".

should_split

    $splitter->should_split($cookie)

Whether or not the cookie should be split

mangle_name_next

    $splitter->mangle_name_next($name)

mangle_name

    $splitter->mangle_name($name, $index)

demangle_name

    $splitter->demangle_name($mangled_name)

These methods encapsulate a name mangling scheme for changing the cookie names to allow a 1:n relationship.

The default mangling behavior is not 100% safe because cookies with a safe size are not mangled.

As long as your cookie names don't start with the substring "_bigcookie_" you should be OK ;-)

Demangles name, increments the index and remangles.

SUBCLASSING

This module is designed to be easily subclassed... If you need to split cookies using a different criteria then you should look into that.

AUTHOR

יובל קוג'מן (Yuval Kogman) <nothingmuch@woobling.org>

CONTRIBUTORS

Karen Etheridge <ether@cpan.org>
Shlomi Fish <shlomif@cpan.org>

COPYRIGHT AND LICENSE

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.