How do I verify my web visitor is still online Post: 302284663

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Top Forums Web Development How do I verify my web visitor is still online Post 302284663 by otheus on Friday 6th of February 2009 04:23:35 AM

02-06-2009

Registered User

One thing you can do with Apache is to create a seperate logfile with just the Cookie (and access time). You can then send this log through a program which monitors the last time a cookie was used, and if it has gone past the time you want, you remove it from the database. So a configuration in apache would look like:

Code:

CustomLog "|/usr/local/bin/user_tracker" cookies
LogFormat "%v\t%{s}t\t%200{Foobar}C" cookies

Where Foobar is the name of your cookie that identifies the user session.
The logs are sent to a script (/usr/local/bin/user_tracker) like this one:

Code:

#!/usr/bin/perl -n
chomp;
($vhost,$time,$cookie)=split("\t");

# Remember this cookie
$Cookies{$vhost . ":" .  $cookie}=$time;

# Every 5 minutes, scan through cookies and remove obsolete database entries
if ($time >= $next_check)  {
    while ( ($cookie,$cookie_time) = each(%Cookies) ) {
       if ($cookie_time >= $expire_time) {
         delete $Cookie{$cookie}; 
         push @to_delete, $cookie;
       }
    }
    foreach (@to_delete) { 
         ($vhost, $cookie_name, $cookie_value) = m/^(.*?):(.*?)=(.*)/;
         # Insert code here to delete $cookie_value from database
       }
    }
    $next_check = $time + 5*60;    # Check for expired cookies every 5 minutes
    $expire_time = $time + 20*60;   # Expire cookies every 20 minutes
}

otheus

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http::cookies::microsoft5.18

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

NAME

       HTTP::Cookies::Microsoft - access to Microsoft cookies files

SYNOPSIS

	use LWP;
	use HTTP::Cookies::Microsoft;
	use Win32::TieRegistry(Delimiter => "/");
	my $cookies_dir = $Registry->
	     {"CUser/Software/Microsoft/Windows/CurrentVersion/Explorer/Shell Folders/Cookies"};

	$cookie_jar = HTTP::Cookies::Microsoft->new(
			  file	   => "$cookies_dir\index.dat",
			  'delayload' => 1,
		      );
	my $browser = LWP::UserAgent->new;
	$browser->cookie_jar( $cookie_jar );

DESCRIPTION

       This is a subclass of "HTTP::Cookies" which loads Microsoft Internet Explorer 5.x and 6.x for Windows (MSIE) cookie files.

       See the documentation for HTTP::Cookies.

METHODS

       The following methods are provided:

       $cookie_jar = HTTP::Cookies::Microsoft->new;
	   The constructor takes hash style parameters. In addition to the regular HTTP::Cookies parameters, HTTP::Cookies::Microsoft recognizes
	   the following:

	     delayload:       delay loading of cookie data until a request
			      is actually made. This results in faster
			      runtime unless you use most of the cookies
			      since only the domain's cookie data
			      is loaded on demand.

CAVEATS

       Please note that the code DOESN'T support saving to the MSIE cookie file format.

AUTHOR

       Johnny Lee <typo_pl@hotmail.com>

COPYRIGHT

       Copyright 2002 Johnny Lee

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

perl v5.18.2							    2012-02-15					       HTTP::Cookies::Microsoft(3)

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http::cookies::microsoft5.18