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RedHat 9 (Linux i386) - man page for http::cookies (redhat section 3)

HTTP::Cookies(3)					User Contributed Perl Documentation					  HTTP::Cookies(3)

HTTP::Cookies - Cookie storage and management
use HTTP::Cookies; $cookie_jar = HTTP::Cookies->new; $cookie_jar->add_cookie_header($request); $cookie_jar->extract_cookies($response);
Cookies are a general mechanism which server side connections can use to both store and retrieve information on the client side of the con- nection. For more information about cookies refer to <URL:> and <URL:http://www.cook->. This module also implements the new style cookies described in RFC 2965. The two variants of cookies are supposed to be able to coexist happily. Instances of the class HTTP::Cookies are able to store a collection of Set-Cookie2: and Set-Cookie: headers and are able to use this infor- mation to initialize Cookie-headers in HTTP::Request objects. The state of a HTTP::Cookies object can be saved in and restored from files.
The following methods are provided: $cookie_jar = HTTP::Cookies->new; The constructor takes hash style parameters. The following parameters are recognized: file: name of the file to restore cookies from and save cookies to autosave: save during destruction (bool) ignore_discard: save even cookies that are requested to be discarded (bool) hide_cookie2: don't add Cookie2 header to requests Future parameters might include (not yet implemented): max_cookies 300 max_cookies_per_domain 20 max_cookie_size 4096 no_cookies list of domain names that we never return cookies to $cookie_jar->add_cookie_header($request); The add_cookie_header() method will set the appropriate Cookie:-header for the HTTP::Request object given as argument. The $request must have a valid url attribute before this method is called. $cookie_jar->extract_cookies($response); The extract_cookies() method will look for Set-Cookie: and Set-Cookie2: headers in the HTTP::Response object passed as argument. Any of these headers that are found are used to update the state of the $cookie_jar. $cookie_jar->set_cookie($version, $key, $val, $path, $domain, $port, $path_spec, $secure, $maxage, $discard, \%rest) The set_cookie() method updates the state of the $cookie_jar. The $key, $val, $domain, $port and $path arguments are strings. The $path_spec, $secure, $discard arguments are boolean values. The $maxage value is a number indicating number of seconds that this cookie will live. A value <= 0 will delete this cookie. %rest defines various other attributes like "Comment" and "CommentURL". $cookie_jar->save( [$file] ); This method file saves the state of the $cookie_jar to a file. The state can then be restored later using the load() method. If a filename is not specified we will use the name specified during construction. If the attribute ignore_discared is set, then we will even save cookies that are marked to be discarded. The default is to save a sequence of "Set-Cookie3" lines. "Set-Cookie3" is a proprietary LWP format, not known to be compatible with any browser. The HTTP::Cookies::Netscape sub-class can be used to save in a format compatible with Netscape. $cookie_jar->load( [$file] ); This method reads the cookies from the file and adds them to the $cookie_jar. The file must be in the format written by the save() method. $cookie_jar->revert; This method empties the $cookie_jar and re-loads the $cookie_jar from the last save file. $cookie_jar->clear( [$domain, [$path, [$key] ] ]); Invoking this method without arguments will empty the whole $cookie_jar. If given a single argument only cookies belonging to that domain will be removed. If given two arguments, cookies belonging to the specified path within that domain are removed. If given three arguments, then the cookie with the specified key, path and domain is removed. $cookie_jar->clear_temporary_cookies( ); Discard all temporary cookies. Scans for all cookies in the jar with either no expire field or a true "discard" flag. To be called when the user agent shuts down according to RFC 2965. $cookie_jar->scan( \&callback ); The argument is a subroutine that will be invoked for each cookie stored in the $cookie_jar. The subroutine will be invoked with the following arguments: 0 version 1 key 2 val 3 path 4 domain 5 port 6 path_spec 7 secure 8 expires 9 discard 10 hash $cookie_jar->as_string( [$skip_discard] ); The as_string() method will return the state of the $cookie_jar represented as a sequence of "Set-Cookie3" header lines separated by "\n". If $skip_discard is TRUE, it will not return lines for cookies with the Discard attribute.
We also provide a subclass called HTTP::Cookies::Netscape which loads and saves Netscape compatible cookie files. You should be able to have LWP share Netscape's cookies by constructing your $cookie_jar like this: $cookie_jar = HTTP::Cookies::Netscape->new( File => "$ENV{HOME}/.netscape/cookies", AutoSave => 1, ); Please note that the Netscape cookie file format is not able to store all the information available in the Set-Cookie2 headers, so you will probably loose some information if you save in this format.
Copyright 1997-1999 Gisle Aas This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. libwww-perl-5.65 2002-02-13 HTTP::Cookies(3)

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